History[edit | edit source]

DESK-MP1-L History
Version	Issue Date	Notes	Refers to
1.0.0	Aug 2023	DESK-MP1-L-1.0.0 release	ETRA SOM
1.0.0	Aug 2023	DESK-MP1-L-1.0.0 release	ETRA SBC
1.0.1	Aug 2023	DESK-MP1-L-1.0.1 Minor release	ETRA SOM
1.0.1	Aug 2023	DESK-MP1-L-1.0.1 Minor release	ETRA SBC

General Information[edit | edit source]

Release Notes[edit | edit source]

DAVE Embedded Systems adds to the latest Linux BSP from STMicroelectronics the customization required to support the SOC platform. For this reason most of the documentation provided by STMicroelectronics remains valid for the DESK development kit.

However, some customization is required, in particular at bootloader and linux kernel levels.

The following table reports the DESK releases information.

	DESK version
Release number	1.0.1
Release type	Minor
Status	Released
Release date	31/07/2023
Release notes	Ver 1.0.1
Product support	ETRA SOM, ETRA SBC
MVM (distro version)	Ubuntu 20.04
U-Boot version	2021.10-desk-mp1-l-1.0.1
Linux version	5.15.67-desk-mp1-l-1.0.1
Drivers	UART debug (2-wire) USB Host USB OTG SD/MMC1 Touch screen Ethernet RGB RTC DWS ConfigID
Manufacturer BSP version	openstlinux-5.15-yocto-kirkstone-mp1-v22.11.23
Graphic libraries	Qt 5.15.3
Build System	Yocto kirkstone

DESK-MP1-L 1.0.1[edit | edit source]

Release notes:

Change URL from ssh to https protocol

Known Limitations[edit | edit source]

The following table reports the known limitations of this DESK release:

Issue	Description
Run Qt5 application from serial console	Start a Qt application from the serial console requires some environment variables to be set: see here

Downloadable binary images[edit | edit source]

All binary images for DESK-MP1-L are hosted on DAVE Embedded System mirror server. There you can find a sub directory for each version of this development kit.

U-Boot performs 2-stage bootloader providing two files: ATF and fip. Both two files must be stored into SD card using dd command.

A summary of images with a brief description can be found into the table below:

Image	DESK version 1.0.1
Platform	DCSB50000
Carrier Board ConfigID	0001
LCD panel	Ampire AM-800480BTMQW-TBMH-A 800x480 7"RGB
Touchscreen	capacitive (USB)
ATF	ATF
Fip	uSD FIP
Linux kernel	uImage
Device tree	stm32mp157a-dcsb5000dd1r

DESK-MP1-L 1.0.0[edit | edit source]

Release notes:

First release based on STM openstlinux-5.15

Known Limitations[edit | edit source]

The following table reports the known limitations of this DESK release:

Issue	Description
Run Qt5 application from serial console	Start a Qt application from the serial console requires some environment variables to be set: see here

Downloadable binary images[edit | edit source]

All binary images for DESK-MP1-L are hosted on DAVE Embedded System mirror server. There you can find a sub directory for each version of this development kit.

U-Boot performs 2-stage bootloader providing two files: ATF and fip. Both two files must be stored into SD card using dd command.

A summary of images with a brief description can be found into the table below:

Image	DESK version 1.0.0
Platform	DCSB50000
Carrier Board ConfigID	0001
LCD panel	Ampire AM-800480BTMQW-TBMH-A 800x480 7"RGB
Touchscreen	capacitive (USB)
ATF	ATF
Fip	uSD FIP
Linux kernel	uImage
Device tree	stm32mp157a-dcsb5000dd1r

Virtual Machine[edit | edit source]

DESK-MP1-L contains all the required software and documentation to start developing Linux application on the Etra platform. In particular, DESK-MP1-L includes a virtual machine, called MVM, which is a specific implementation of the general Managed Virtual Machine concept.

The DESK-MP1-L-specific MVM provides the followings:

VirtualBox virtual machine (.OVA archive)
based on Lubuntu 20.04 LTS (64-bit version)
pre-installed VirtualBox Guest Additions
LXDE desktop environment
Source code, tools and services:
- Arm trusted firmware (ATF): source tree cloned from DAVE Embedded Systems public git repository.
- U-boot: source tree cloned from DAVE Embedded Systems public git repository.
- Desk mp1 boot image: source tree cloned from DAVE Embedded Systems public git repository .
- Kernel: ource tree cloned from DAVE Embedded Systems public git repository.
- External pre-built toolchain.
- Yocto package: all package needed for build BSP with yocto.
- TFTP: service for download binary on U-boot, with base directory /tftp/.
- NFS: root path of RFS on /home/dvdk/desk-mp1-l/rfs/desk-mp1-l/ directory.
administrator account (dvdk) with autologin. Please note that the user account credentials are provided with the development kit (you can find them in the README file contained in the sw/dvdk folder of the kit distribution).
- user: dvdk
- password: dvdk

Please note that ATF, U-Boot, and kernel source trees are derived from the official trees released by ST; these trees have been customized to add support for the ETRA SOM.

Host setup[edit | edit source]

As stated previously, ETRA SOM host tools are based on a Managed Virtual Machine.

It is also worth remembering that access to git repositories is required to download target source code. To enable it, please refer to this page.

MVM can be downloaded here. For accessing DESK Reserved area please contact our helpdesk support channel

To install it, please refer to this page.

Virtual Machine updates[edit | edit source]

The Ubuntu distribution may ask for an update, if available, due to the Update Notifier.

The updates are not required for the proper DESK Virtual Machine functionality.

Even if the update can be transparent to the VM normal operations, it is suggested not to install the updates. They may change (or in a worst-case corrupt) what has been tested and documented in our wiki pages.

If this is annoying for you, it is possible to disable it.

ConfigID and UniqueID[edit | edit source]

ConfigID[edit | edit source]

ConfigID is a new feature of DAVE Embedded Systems products. Its main purpose is providing an automatic mechanism for the identification of the product model and configuration.

With ConfigID, we aim at:

completing the hardware configuration information that the software can't normally auto-detect (i.e. RAM chip version,...), implementing a dedicated reliable detect procedure
when required, overriding the auto-detected hardware configuration information

When implemented, this mechanism allows for:

initializing in the proper way the hardware platform, based on the specific features and parameters of the product, using a common software base (eg: a typical case is the SDRAM controller parameters, which must be configured by U-Boot depending on the particular memory chip, which can be different for the various SOM models)
getting the complete hardware configuration (combining ConfigID with the information collectable at runtime) of a product deployed on the field

In simple words, model identification means the capability of reading a numerical code, stored in an available device (SOC's OTP , I2C EEPROM, 1-wire memories, protected NOR flash, etc.)

There are two ConfigIDs:

SOM ConfigID: which reflects the characteristics of the SOM (stored on the SOM itself)
Carrier Board (CB) ConfigID: which reflects the characteristics of the carrier board that hosts the SOM (stored on the carrier board itself and read by the SOM at boot time)

UniqueID[edit | edit source]

An additional attribute is UniqueID, which is a read-only code which univocally identifies a single product and is used for traceability.

It is worth remembering that ConfigID and UniqueID are independent from product serial number.

Customer's action[edit | edit source]

DAVE Embedded Systems recommends to be up-to-date with Official SOM's BSPs for taking advantages of ConfigID/UniqueId features: this is the only required action.

ConfigID advantage: to allow U-Boot bootloader to be executed only with the correct configuration (if the U-Boot loaded is not the proper one, it may stop execution avoiding incorrect behaviour)
UniqueID advantage: to trace univocally each individual SOMs and, in turn, all the on-the-field equipments

ConfigID values[edit | edit source]

ConfigID is a N-bit (typically N>8) signed integer, that can have the following values:

< 0: error
- -1: not initialized
= 0: ConfigID legacy
- for prototypes (ConfigID not yet defined) or for products manufactured before the introduction of the ConfigID feature
> 0: valid ConfigID
- values are reported accordingly with the specific product table

Hardware implementations of the ConfigID[edit | edit source]

The following paragraphs briefly describe the available solutions for storing the ConfigID.

OTP on the SOC[edit | edit source]

Some SOCs provides programmable OTPs (eg. for security, MAC address, boot modes, etc). Usually, some of these are general purpose registers and can be managed by the user.

This is the ideal implementation, because:

ConfigID is stored in the most important component of the SOM
the component that hosts the ConfigID is NOT optional
typically, a very selective lock can be forced. In general, for reliability and/or security reasons, OTP areas used to store ConfigIDs may be locked during the manufacturing process.

OTP 1-wire memory[edit | edit source]

This implementation requires a 1-wire memory chip.

I2C Eeprom[edit | edit source]

This implementation requires connecting an EEPROM to an I2C bus of the SOC. Moreover, routing a write protect pin to the SOM connector is required.

NOR Flash SPI[edit | edit source]

This implementation requires a NOR flash connected to the SPI bus of the SOC.

DAVE Embedded Systems' hardware implementation[edit | edit source]

DAVE's SOCs implement the ConfigID feature depending on hardware Capabilities of the SOCs. The following list shows the priority used for its implementation:

OTPs
1. example: AXEL family processor (i.MX6) implements ConfigID using processor's OTP
2. AXEL uses GP1 eFuse register to store ConfigID
NOR Flash SPI
1. example: DIVA family processor (AM335x) implements ConfigID using NOR SPI (if present)
2. DIVA and BORA use the first 32bytes OTP block on NOR SPI to store ConfigID (and its CRC32), UniqueID (and its CRC32)
I2C Eeprom
1. example: DIVA family processor (AM335x) or BORA Lite processor (ZYNQ) implements ConfigID using I2C Eeprom when NOR SPI is not present (module boots from NAND or SD)
2. DIVA and BORA Lite use the first 32bytes on I2C EPROM to store ConfigID (and its CRC32), UniqueID (and its CRC32)
1-wire
1. example: latest AXEL Lite, AXEL ULite and BORA/BORA Xpress/BORA Lite Evaluation Kits implement CB ConfigID using the onboard 1-wire device (DS2431)

Software implementation[edit | edit source]

U-Boot[edit | edit source]

u-boot integrates the software routines for reading and displaying the ConfigID: hereunder an example of SOM ConfigID at startup:

U-Boot 2013.04-00010-gcb05b30 (Jun 26 2015 - 12:49:26)-xelk-2.1.0

CPU:   Freescale i.MX6Q rev1.5 at 792 MHz
CPU:   Temperature 47 C, limits (-40 C, 125 C), calibration data: 0xc0
Reset cause: POR
Environment: SPI Flash
I2C:   ready
DRAM:  2 GiB
Now running in RAM - U-Boot at: 8ff35000
NAND:  512 MiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
SF: Detected S25FL256S with page size 64 KiB, total 32 MiB
In:    serial
Out:   serial
Err:   serial
Power: found PFUZE100 (devid=10, revid=21)
SOM ConfigID#: 00000003
SOM UniqueID#: df646299:0b0579d4

For accessing these information on Linux procfs, the device tree must be modified (using u-boot fdt command): for example:

DIVA# setenv fdtfixup 'fdt addr ${fdtaddr}; run fdtfixup_configid'
DIVA# setenv fdtfixup_configid 'fdt set / som_configid ${som_configid#}; fdt set / som_uniqueid ${som_uniqueid#}; fdt set / cb_configid ${cb_configid#}; fdt set / cb_uniqueid ${cb_uniqueid#}'

Linux[edit | edit source]

It is possible to read the ConfigID/UniqueID via procfs; for example:

root@axel-lite:~# cat /proc/device-tree/som/configid && echo
00000003
root@axel-lite:~# cat /proc/device-tree/som/uniqueid && echo
df646299:0b0579d4
root@axel-lite:~#

Legacy device tree, has a sightly different procfs structure:

root@axel-lite:~# cat /proc/device-tree/som_configid && echo
00000003
root@axel-lite:~# cat /proc/device-tree/som_uniqueid && echo
df646299:0b0579d4
root@axel-lite:~#

A real case example of ConfigID benefit[edit | edit source]

The ConfigID benefit is clear when:

there is a number of products deployed on the field
the products deployed on the field needs a SW update

The ideal scenario is that all products are equal and there are no differences on the Bill Of Material (BOM):

All products have the same BOM with a single Config ID
ConfigID A
ConfigID A
ConfigID A
ConfigID A
ConfigID A
ConfigID A

In this case there are no problems to deploy a new SW update on the field: all products have the same HW configuration, then the same SW configuration.

Unfortunately, this is an ideal scenario. The reality is that:

component obsolescence
product shortage
second source strategies

force to have an on-the-field different version of product (with same functionalities but with different HW configuration) which doesn't permit to realize what proposed in the ideal case.

The usage of the ConfigID technique, allows the running SW to identify the underlying HW configuration and automatically adapt the BSP (i.e. the driver layer) to properly use the HW subsystems: this, maintaining the overall product features identical to the final User point-of-view.

All products are similar BUT there are different Config ID between the 2 product versions
ConfigID A
ConfigID A
ConfigID B
ConfigID B
ConfigID A
ConfigID B

With a scenario, like the one described above, if you would like to update the SW you need to implement a strategy for understanding what platform version is going to be updated. The Config ID is used exactly for this goal.

The ConfigID provides to the software update routine the information on which product version is so the update can be adapted to the exact product version.

In this way, you can distribute one single version of the software update which will automatically adapt itself to the currently running platform.

How to handle After Sales with Config ID[edit | edit source]

One of the mos common questions about Config ID is how to handle the Config ID issue. Below is described with an example how to handle it.

This product is returned from the field with a problem on the display:

Config ID A

After Sales Dept analizes the product and decide to substitute the display. The problem is that the existing display is not available - because of is End Of Life (EOL) - and it is required to move to a different display: in the product a different Config ID will be written because of the 2 displays requires a dedicated SW version and cannot be distinguished automatically during the startup. The final result is to have the similar product:

Config ID B

As indicated, the new display requires a different Config ID (from A to B) so it can be updated with an easy software routine before start the SW update. This Config ID update routine can be implemented in manufacturing facility typically using a dedicated USB pen drive which modify the saved ConfigID to the new one depending on the storage memory in use

ConfigID[edit | edit source]

This article describes how the ConfigID is implemented in the products supported by the DESK-MP1-L Linux Kit.

ETRA[edit | edit source]

As ETRA is a system-on-module (SOM), the typical mechanism described here is used.

Moreover, a system is composed of the combination of a SOM and a carrier board. In this case, two ConfigIDs are used to identify the actual board configuration like it was a SOM+carrier board system.

For the sake of simplicity, the first ConfigID is denoted as SOM ConfigID, while the second one is denoted as CB ConfigID:

...
SOM ConfigID#: 00000001
SOM UniqueID#: 39303435:33385105:001e0024
CB ConfigID#: 00000001
CB UniqueID#: 0d000035:c4a4762d
Board: ETRA on SBC
...

Generally speaking:

SOM ConfigID is used to identify the configuration of the basic features of the SOM, it is stored in the OTPs on the SOC.
CB ConfigID is used to identify the peripherals and the I/O interfaces, it is stored in an external one-wire eeprom memory present in the carrier board.

Booting from NFS[edit | edit source]

This configuration is very helpful during the software development (both for kernel and applications). The kernel image is downloaded via TFTP while the root file system is remotely mounted via NFS from the host. It is assumed that the development host:

is connected with the target host board through an Ethernet LAN
exports the directory containing the root file system for the target through the NFS server
runs a TFTP server.
has a proper subnet IP address

net_nfs configuration[edit | edit source]

DESK-MP1-L Virtual Machine is properly configured for the TFTP and NFS debug.

In any case, some variables has to be configured on the target and the VM itself has to be configured for respect to the network environment.

Host (Virtual Machine) configuration[edit | edit source]

The DESK-MP1-L Virtual Machine has the tftp and nfs services already running. Optionally, their configuration has to be changed according to the network configuration where the target is connected to.

Check and properly configure the items describe in VirtualBox Network Configuration

Target configuration[edit | edit source]

The IP address for server and target should be configured: an example (for a network subnet 192.168.0.x)

=> setenv serverip 192.168.0.125
=> setenv ipaddr 192.168.0.90

serverip is the IP address of the host machine running the tftp/nfs server
ipaddr is the IP address of the target

The kernel and device tree files has to be selected

=> setenv bootfile desk-mp1-l/uImage
=> setenv fdtfile desk-mp1-l/stm32mp157a-dcsb5000dd1r.dtb

finally, the root file system directory on the Virtual Machine should be configured for let the kernel to find the INIT

=> setenv rootpath /home/dvdk/desk-mp1-l/rfs/desk-MP1-l/

To run this configuration just issue the net_nfs command which firstly download the kernel and device tree using the tftp protocol

NOTICE:  CPU: STM32MP157AAB Rev.B
NOTICE:  Model: DAVE desk-mp1 stm32mp157a-dcsb5000dd1r
INFO:    PMIC version = 0x21
INFO:    Reset reason (0x15):
INFO:      Power-on Reset (rst_por)
INFO:    FCONF: Reading TB_FW firmware configuration file from: 0x2ffe2000
INFO:    FCONF: Reading firmware configuration information for: stm32mp_io
INFO:    Using SDMMC
INFO:      Instance 1
INFO:    Boot used partition fsbl1
NOTICE:  BL2: v2.6-stm32mp1-r2.0(debug):desk-mp1-l-1.0.0(709eafce)
NOTICE:  BL2: Built : 08:34:10, Jul 25 2023
INFO:    BL2: Doing platform setup
INFO:    RAM: DDR3-DDR3L 16bits 533000kHz
INFO:    Memory size = 0x20000000 (512 MB)
INFO:    BL2: Loading image id 1
INFO:    Loading image id=1 at address 0x2ffff000
INFO:    Image id=1 loaded: 0x2ffff000 - 0x2ffff226
INFO:    FCONF: Reading FW_CONFIG firmware configuration file from: 0x2ffff000
INFO:    FCONF: Reading firmware configuration information for: dyn_cfg
INFO:    FCONF: Reading firmware configuration information for: stm32mp1_firewall
INFO:    BL2: Loading image id 4
INFO:    Loading image id=4 at address 0x2ffc5000
INFO:    Image id=4 loaded: 0x2ffc5000 - 0x2ffd9820
INFO:    BL2: Skip loading image id 8
INFO:    BL2: Skip loading image id 9
INFO:    BL2: Loading image id 2
INFO:    Loading image id=2 at address 0xc0500000
INFO:    Image id=2 loaded: 0xc0500000 - 0xc0512e30
INFO:    BL2: Loading image id 16
INFO:    Loading image id=16 at address 0x2ffc0000
INFO:    Image id=16 loaded: 0x2ffc0000 - 0x2ffc3ff5
INFO:    BL2: Loading image id 5
INFO:    Loading image id=5 at address 0xc0100000
INFO:    Image id=5 loaded: 0xc0100000 - 0xc01e8ba0
NOTICE:  BL2: Booting BL32
INFO:    Entry point address = 0x2ffc5000
INFO:    SPSR = 0x1d3
NOTICE:  SP_MIN: v2.6-stm32mp1-r2.0(debug):desk-mp1-l-1.0.0(709eafce)
NOTICE:  SP_MIN: Built : 08:34:10, Jul 25 2023
INFO:    ARM GICv2 driver initialized
INFO:    ETZPC: UART1 (3) could be non secure
INFO:    ETZPC: SPI6 (4) could be non secure
INFO:    ETZPC: RNG1 (7) could be non secure
INFO:    ETZPC: HASH1 (8) could be non secure
INFO:    ETZPC: CRYP1 (9) could be non secure
INFO:    ETZPC: I2C6 (12) could be non secure
INFO:    SP_MIN: Initializing runtime services
INFO:    SP_MIN: Preparing exit to normal world
serial_stm32 serial@40010000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19


U-Boot 2021.10-desk-mp1-l-1.0.0 (Jul 25 2023 - 08:53:53 +0000)

CPU: STM32MP157AAB Rev.B
Model: Dave desk-mp1 stm32mp157a-dcsb5000dd1r
Board: Etra in trusted mode (st,stm32mp157a-dcsb5000dd1r)
DRAM:  512 MiB
Clocks:
- MPU : 650 MHz
- MCU : 208.878 MHz
- AXI : 266.500 MHz
- PER : 0 MHz
- DDR : 533 MHz
WDT:   Started with servicing (32s timeout)
NAND:  0 MiB
MMC:   STM32 SD/MMC: 2, STM32 SD/MMC: 0, STM32 SD/MMC: 1
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
invalid MAC address 0 in OTP 00:00:00:00:00:00
SOM ConfigID#: 00000001
SOM UniqueID#: 39303435:33385105:001e0024
CB ConfigID#: 00000001
CB UniqueID#: 0d000035:c4a4762d
Board: ETRA on SBC
Net:   
Warning: ethernet@5800a000 (eth0) using random MAC address - 0a:7f:53:9f:1a:77
eth0: ethernet@5800a000
Hit any key to stop autoboot:  0 
STM32MP> 
STM32MP> 
STM32MP> edit serverip 
edit: 192.168.0.169
STM32MP> savee
Saving Environment to MMC... Writing to MMC(0)... OK
STM32MP> run net_nfs 
ethernet@5800a000 Waiting for PHY auto negotiation to complete..... done
Using ethernet@5800a000 device
TFTP from server 192.168.0.169; our IP address is 192.168.0.89
Filename 'desk-mp1-l/uImage'.
Load address: 0xc2000000
Loading: #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #######################
         1.2 MiB/s
done
Bytes transferred = 8765832 (85c188 hex)
Using ethernet@5800a000 device
TFTP from server 192.168.0.169; our IP address is 192.168.0.89
Filename 'desk-mp1-l/stm32mp157a-dcsb5000dd1r.dtb'.
Load address: 0xc4000000
Loading: ############
         915 KiB/s
done
Bytes transferred = 60967 (ee27 hex)
## Booting kernel from Legacy Image at c2000000 ...
   Image Name:   Linux-5.15.67-desk-mp1-l-1.0.0
   Created:      2023-07-26   6:51:54 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    8765768 Bytes = 8.4 MiB
   Load Address: c2000040
   Entry Point:  c2000040
   Verifying Checksum ... OK
## Flattened Device Tree blob at c4000000
   Booting using the fdt blob at 0xc4000000
   XIP Kernel Image
   Loading Device Tree to cffee000, end cffffe26 ... OK
ETZPC: 0x54003000 node disabled, decprot 7=0
ETZPC: 0x48001000 node disabled, decprot 89=2

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.15.67-desk-mp1-l-1.0.0 (jenkins@focalbakery) (arm-ostl-linux-gnueabi-gcc (GCC) 11.3.0, GNU ld (GNU Binutils) 2.38.20220708) #1 SMP PREEMPT Wed Jul 26 08:48:59 CEST 2023
[    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: Dave desk-mp1 stm32mp157a-dcsb5000dd1r
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] Reserved memory: created DMA memory pool at 0x10000000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node mcuram2@10000000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x10040000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node vdev0vring0@10040000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x10041000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node vdev0vring1@10041000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x10042000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node vdev0buffer@10042000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x10048000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node mcu_rsc_table@10048000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x30000000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node mcuram@30000000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x38000000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node retram@38000000, compatible id shared-dma-pool
[    0.000000] cma: Reserved 128 MiB at 0xd8000000
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x00000000c0000000-0x00000000dfffffff]
[    0.000000]   HighMem  empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00000000c0000000-0x00000000d3ffffff]
[    0.000000]   node   0: [mem 0x00000000d4000000-0x00000000d7ffffff]
[    0.000000]   node   0: [mem 0x00000000d8000000-0x00000000dfffffff]
[    0.000000] Initmem setup node 0 [mem 0x00000000c0000000-0x00000000dfffffff]
[    0.000000] psci: probing for conduit method from DT.
[    0.000000] psci: PSCIv1.1 detected in firmware.
[    0.000000] psci: Using standard PSCI v0.2 function IDs
[    0.000000] psci: MIGRATE_INFO_TYPE not supported.
[    0.000000] psci: SMC Calling Convention v1.2
[    0.000000] percpu: Embedded 17 pages/cpu s37004 r8192 d24436 u69632
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 129920
[    0.000000] Kernel command line: root=/dev/nfs rw nfsroot=192.168.0.169:/home/dvdk/desk-mp1-l/rfs/desk-mp1-l,v3,tcp ip=192.168.0.89:192.168.0.169:192.168.0.254:255.255.255.0:etra:eth0:off panic=1 console=ttySTM0,115200
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 300948K/524288K available (13312K kernel code, 1379K rwdata, 3896K rodata, 1024K init, 218K bss, 92268K reserved, 131072K cma-reserved, 0K highmem)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[    0.000000] trace event string verifier disabled
[    0.000000] rcu: Preemptible hierarchical RCU implementation.
[    0.000000] rcu:     RCU event tracing is enabled.
[    0.000000]  Trampoline variant of Tasks RCU enabled.
[    0.000000]  Tracing variant of Tasks RCU enabled.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (virt).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[    0.000002] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[    0.000030] Switching to timer-based delay loop, resolution 41ns
[    0.001201] Console: colour dummy device 80x30
[    0.001272] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[    0.001305] pid_max: default: 32768 minimum: 301
[    0.001622] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.001660] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.003046] CPU: Testing write buffer coherency: ok
[    0.003575] /cpus/cpu@0 missing clock-frequency property
[    0.003646] /cpus/cpu@1 missing clock-frequency property
[    0.003680] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.005432] Setting up static identity map for 0xc0100000 - 0xc0100060
[    0.005697] rcu: Hierarchical SRCU implementation.
[    0.008145] smp: Bringing up secondary CPUs ...
[    0.009536] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.009802] smp: Brought up 1 node, 2 CPUs
[    0.009844] SMP: Total of 2 processors activated (96.00 BogoMIPS).
[    0.009862] CPU: All CPU(s) started in SVC mode.
[    0.010838] devtmpfs: initialized
[    0.032452] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[    0.032864] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.032908] futex hash table entries: 512 (order: 3, 32768 bytes, linear)
[    0.040445] pinctrl core: initialized pinctrl subsystem
[    0.043161] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[    0.046724] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.048623] thermal_sys: Registered thermal governor 'step_wise'
[    0.049008] cpuidle: using governor menu
[    0.049407] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.049438] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.049983] Serial: AMBA PL011 UART driver
[    0.053265] stm32-pm-domain pm_domain: domain core-ret-power-domain registered
[    0.053322] stm32-pm-domain pm_domain: subdomain core-power-domain registered
[    0.053343] stm32-pm-domain pm_domain: domains probed
[    0.087761] platform panel-rgb@0: Fixing up cyclic dependency with 5a001000.display-controller
[    0.106230] Kprobes globally optimized
[    0.121810] SCSI subsystem initialized
[    0.122791] usbcore: registered new interface driver usbfs
[    0.122884] usbcore: registered new interface driver hub
[    0.122968] usbcore: registered new device driver usb
[    0.123377] pps_core: LinuxPPS API ver. 1 registered
[    0.123399] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.123439] PTP clock support registered
[    0.123796] EDAC MC: Ver: 3.0.0
[    0.125013] arm-scmi firmware:scmi: SCMI Notifications - Core Enabled.
[    0.125132] arm-scmi firmware:scmi: SCMI Protocol v2.0 'ST:' Firmware version 0x0
[    0.126577] Advanced Linux Sound Architecture Driver Initialized.
[    0.127754] Bluetooth: Core ver 2.22
[    0.127866] NET: Registered PF_BLUETOOTH protocol family
[    0.127885] Bluetooth: HCI device and connection manager initialized
[    0.127911] Bluetooth: HCI socket layer initialized
[    0.127931] Bluetooth: L2CAP socket layer initialized
[    0.127971] Bluetooth: SCO socket layer initialized
[    0.129075] clocksource: Switched to clocksource arch_sys_counter
[    0.222304] NET: Registered PF_INET protocol family
[    0.222717] IP idents hash table entries: 8192 (order: 4, 65536 bytes, linear)
[    0.224423] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[    0.224495] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.224524] TCP established hash table entries: 4096 (order: 2, 16384 bytes, linear)
[    0.224595] TCP bind hash table entries: 4096 (order: 3, 32768 bytes, linear)
[    0.224699] TCP: Hash tables configured (established 4096 bind 4096)
[    0.224844] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[    0.224901] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
[    0.225282] NET: Registered PF_UNIX/PF_LOCAL protocol family
[    0.230164] RPC: Registered named UNIX socket transport module.
[    0.230203] RPC: Registered udp transport module.
[    0.230217] RPC: Registered tcp transport module.
[    0.230230] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.232495] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 5 counters available
[    0.234675] Initialise system trusted keyrings
[    0.235207] workingset: timestamp_bits=14 max_order=17 bucket_order=3
[    0.246806] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.248380] NFS: Registering the id_resolver key type
[    0.248479] Key type id_resolver registered
[    0.248498] Key type id_legacy registered
[    0.248714] ntfs: driver 2.1.32 [Flags: R/O].
[    0.249020] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[    0.250003] fuse: init (API version 7.34)
[    0.395127] NET: Registered PF_ALG protocol family
[    0.395171] Key type asymmetric registered
[    0.395187] Asymmetric key parser 'x509' registered
[    0.395381] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 245)
[    0.395407] io scheduler mq-deadline registered
[    0.395422] io scheduler kyber registered
[    0.405306] reg11: supplied by regulator-dummy
[    0.405769] reg18: supplied by regulator-dummy
[    0.406151] usb33: supplied by regulator-dummy
[    0.411183] STM32 USART driver initialized
[    0.434054] brd: module loaded
[    0.445036] loop: module loaded
[    0.454344] CAN device driver interface
[    0.456688] pegasus: Pegasus/Pegasus II USB Ethernet driver
[    0.456791] usbcore: registered new interface driver pegasus
[    0.456877] usbcore: registered new interface driver asix
[    0.456942] usbcore: registered new interface driver ax88179_178a
[    0.457024] usbcore: registered new interface driver cdc_ether
[    0.457107] usbcore: registered new interface driver smsc75xx
[    0.457188] usbcore: registered new interface driver smsc95xx
[    0.457253] usbcore: registered new interface driver net1080
[    0.457320] usbcore: registered new interface driver cdc_subset
[    0.457381] usbcore: registered new interface driver zaurus
[    0.457557] usbcore: registered new interface driver cdc_ncm
[    0.458877] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.458938] ehci-platform: EHCI generic platform driver
[    0.459309] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    0.459354] ohci-platform: OHCI generic platform driver
[    0.460175] usbcore: registered new interface driver cdc_acm
[    0.460198] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[    0.460313] usbcore: registered new interface driver usb-storage
[    0.464732] i2c_dev: i2c /dev entries driver
[    0.468648] softdog: initialized. soft_noboot=0 soft_margin=60 sec soft_panic=0 (nowayout=1)
[    0.468681] softdog:              soft_reboot_cmd=<not set> soft_active_on_boot=0
[    0.470821] sdhci: Secure Digital Host Controller Interface driver
[    0.470851] sdhci: Copyright(c) Pierre Ossman
[    0.470864] Synopsys Designware Multimedia Card Interface Driver
[    0.471385] sdhci-pltfm: SDHCI platform and OF driver helper
[    0.472651] ledtrig-cpu: registered to indicate activity on CPUs
[    0.472763] arm-scmi firmware:scmi: Failed. SCMI protocol 17 not active.
[    0.473021] SMCCC: SOC_ID: ID = jep106:0020:0500 Revision = 0x00002000
[    0.473965] hid: raw HID events driver (C) Jiri Kosina
[    0.474246] usbcore: registered new interface driver usbhid
[    0.474267] usbhid: USB HID core driver
[    0.483142] NET: Registered PF_PACKET protocol family
[    0.483200] can: controller area network core
[    0.483333] NET: Registered PF_CAN protocol family
[    0.483355] can: raw protocol
[    0.483373] can: broadcast manager protocol
[    0.483394] can: netlink gateway - max_hops=1
[    0.483851] Bluetooth: RFCOMM TTY layer initialized
[    0.483897] Bluetooth: RFCOMM socket layer initialized
[    0.483951] Bluetooth: RFCOMM ver 1.11
[    0.484429] lib80211: common routines for IEEE802.11 drivers
[    0.484965] Key type dns_resolver registered
[    0.485104] ThumbEE CPU extension supported.
[    0.485138] Registering SWP/SWPB emulation handler
[    0.485634] registered taskstats version 1
[    0.485669] Loading compiled-in X.509 certificates
[    0.525316] stm32-mdma 58000000.dma-controller: STM32 MDMA driver registered
[    0.528679] stm32-dma 48000000.dma-controller: no dma pool: can't use MDMA: 0
[    0.530588] stm32-dma 48000000.dma-controller: STM32 DMA driver registered
[    0.549548] stm_thermal 50028000.thermal: stm_thermal_probe: Driver initialized successfully
[    0.556571] /soc/interrupt-controller@5000d000: bank0
[    0.556627] /soc/interrupt-controller@5000d000: bank1
[    0.556658] /soc/interrupt-controller@5000d000: bank2
[    0.558652] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOA bank added
[    0.559604] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOB bank added
[    0.560374] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOC bank added
[    0.561133] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOD bank added
[    0.561852] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOE bank added
[    0.562533] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOF bank added
[    0.563284] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOG bank added
[    0.563966] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOH bank added
[    0.564049] stm32mp157-pinctrl soc:pinctrl@50002000: Pinctrl STM32 initialized
[    0.565018] stm32mp157-pinctrl soc:pinctrl@54004000: at least one GPIO bank is required
[    0.565051] stm32mp157-pinctrl: probe of soc:pinctrl@54004000 failed with error -22
[    0.566995] LCD_5V: supplied by vin
[    0.567757] wlan-en-regulator: supplied by vin
[    0.571816] stm32-usart 4000f000.serial: interrupt mode for rx (no dma)
[    0.571855] stm32-usart 4000f000.serial: interrupt mode for tx (no dma)
[    0.571893] 4000f000.serial: ttySTM1 at MMIO 0x4000f000 (irq = 49, base_baud = 4000000) is a stm32-usart
[    0.574102] stm32-usart 40010000.serial: interrupt mode for rx (no dma)
[    0.574137] stm32-usart 40010000.serial: interrupt mode for tx (no dma)
[    0.574175] 40010000.serial: ttySTM0 at MMIO 0x40010000 (irq = 50, base_baud = 4000000) is a stm32-usart
[    1.876693] printk: console [ttySTM0] enabled
[    1.883384] stm32-usart 40018000.serial: interrupt mode for rx (no dma)
[    1.888580] stm32-usart 40018000.serial: interrupt mode for tx (no dma)
[    1.895372] 40018000.serial: ttySTM3 at MMIO 0x40018000 (irq = 51, base_baud = 4000000) is a stm32-usart
[    1.906972] stm32-usart 40019000.serial: interrupt mode for rx (no dma)
[    1.912252] stm32-usart 40019000.serial: interrupt mode for tx (no dma)
[    1.918854] 40019000.serial: ttySTM2 at MMIO 0x40019000 (irq = 52, base_baud = 4000000) is a stm32-usart
[    1.934966] stm32-dwmac 5800a000.ethernet: IRQ eth_lpi not found
[    1.940786] stm32-dwmac 5800a000.ethernet: User ID: 0x40, Synopsys ID: 0x42
[    1.946602] stm32-dwmac 5800a000.ethernet:   DWMAC4/5
[    1.951618] stm32-dwmac 5800a000.ethernet: DMA HW capability register supported
[    1.958909] stm32-dwmac 5800a000.ethernet: RX Checksum Offload Engine supported
[    1.966231] stm32-dwmac 5800a000.ethernet: TX Checksum insertion supported
[    1.973137] stm32-dwmac 5800a000.ethernet: Wake-Up On Lan supported
[    1.979571] stm32-dwmac 5800a000.ethernet: TSO supported
[    1.984744] stm32-dwmac 5800a000.ethernet: Enable RX Mitigation via HW Watchdog Timer
[    1.992573] stm32-dwmac 5800a000.ethernet: device MAC address 0a:7f:53:9f:1a:77
[    1.999893] stm32-dwmac 5800a000.ethernet: Enabled L3L4 Flow TC (entries=2)
[    2.006881] stm32-dwmac 5800a000.ethernet: Enabled RFS Flow TC (entries=8)
[    2.013829] stm32-dwmac 5800a000.ethernet: TSO feature enabled
[    2.019637] stm32-dwmac 5800a000.ethernet: Using 32 bits DMA width
[    2.034230] stm32_rtc 5c004000.rtc: registered as rtc0
[    2.038053] stm32_rtc 5c004000.rtc: setting system clock to 2000-01-01T00:00:29 UTC (946684829)
[    2.047401] stm32_rtc 5c004000.rtc: Date/Time must be initialized
[    2.052874] stm32_rtc 5c004000.rtc: registered rev:1.2
[    2.078617] stm32f7-i2c 40015000.i2c: using dma1chan0 (tx) and dma1chan1 (rx) for DMA transfers
[    2.086833] stm32f7-i2c 40015000.i2c: STM32F7 I2C-0 bus adapter
[    2.117717] stpmic1 1-0033: PMIC Chip Version: 0x21
[    2.126328] vddcore: supplied by vin
[    2.131599] vdd_ddr: supplied by vin
[    2.136721] vdd: supplied by vin
[    2.141565] v3v3: supplied by vin
[    2.146472] v1v8_audio: supplied by v3v3
[    2.153323] v3v3_hdmi: supplied by vin
[    2.159381] vtt_ddr: supplied by vdd_ddr
[    2.164720] vdd_usb: supplied by vin
[    2.170470] vdda: supplied by vin
[    2.175914] v1v2_hdmi: supplied by v3v3
[    2.181586] vref_ddr: supplied by vin
[    2.187238] bst_out: supplied by vin
[    2.190390] vbus_otg: supplied by bst_out
[    2.194352] vbus_sw: supplied by bst_out
[    2.203933] hwmon hwmon1: temp1_input not attached to any thermal zone
[    2.211164] rtc-ds3232 1-0068: registered as rtc1
[    2.215372] stm32f7-i2c 5c002000.i2c: STM32F7 I2C-1 bus adapter
[    2.222556] i2c i2c-0: Added multiplexed i2c bus 2
[    2.226036] i2c-mux-gpio i2cmux: 1 port mux on STM32F7 I2C(0x40015000) adapter
[    2.238182] mmci-pl18x 48004000.mmc: mmc0: PL180 manf 53 rev2 at 0x48004000 irq 38,0 (pio)
[    2.437741] mmci-pl18x 58005000.mmc: Got CD GPIO
[    2.442335] mmci-pl18x 58005000.mmc: mmc1: PL180 manf 53 rev2 at 0x58005000 irq 42,0 (pio)
[    2.467897] mmc0: queuing unknown CIS tuple 0x01 [d9 01 ff] (3 bytes)
[    2.480403] mmci-pl18x 58007000.mmc: mmc2: PL180 manf 53 rev2 at 0x58007000 irq 43,0 (pio)
[    2.488797] mmc0: queuing unknown CIS tuple 0x1a [01 01 00 02 07] (5 bytes)
[    2.498312] mmc0: queuing unknown CIS tuple 0x1b [c1 41 30 30 ff ff 32 00] (8 bytes)
[    2.505375] mmc0: queuing unknown CIS tuple 0x14 [] (0 bytes)
[    2.518285] mmc0: new high speed SDIO card at address 0001
[    2.524170] mmc1: new high speed SDHC card at address 59b4
[    2.528525] stm32-ipcc 4c001000.mailbox: ipcc rev:1.0 enabled, 6 chans, proc 0
[    2.538317] mmcblk1: mmc1:59b4 USDU1 14.9 GiB 
[    2.542967] stm32-rproc 10000000.m4: IRQ index 0 not found
[    2.548806] remoteproc remoteproc0: m4 is available
[    2.555924]  mmcblk1: p1 p2 p3 p4 p5 p6 p7 p8 p9 p10 p11
[    2.561309] rfkill_gpio bt_rfkill: bt_rfkill device registered.
[    2.572955] LCD_VDD: supplied by vdd
[    2.575854] TOUCH_VDD: supplied by vdd
[    2.581775] stm32-usbphyc 5a006000.usbphyc: registered rev:1.0
[    2.594873] dwc2 49000000.usb-otg: supply vusb_d not found, using dummy regulator
[    2.601351] dwc2 49000000.usb-otg: supply vusb_a not found, using dummy regulator
[    2.616961] mmc2: new DDR MMC card at address 0001
[    2.621840] mmcblk2: mmc2:0001 W62704 3.53 GiB 
[    2.631363] mmcblk2boot0: mmc2:0001 W62704 2.00 MiB 
[    2.638100] mmcblk2boot1: mmc2:0001 W62704 2.00 MiB 
[    2.644545] mmcblk2rpmb: mmc2:0001 W62704 512 KiB, chardev (240:0)
[    2.746682] dwc2 49000000.usb-otg: EPs: 9, dedicated fifos, 952 entries in SPRAM
[    2.753845] dwc2 49000000.usb-otg: DWC OTG Controller
[    2.757856] dwc2 49000000.usb-otg: new USB bus registered, assigned bus number 1
[    2.765325] dwc2 49000000.usb-otg: irq 74, io mem 0x49000000
[    2.777575] hub 1-0:1.0: USB hub found
[    2.780050] hub 1-0:1.0: 1 port detected
[    2.789196] ehci-platform 5800d000.usb: EHCI Host Controller
[    2.793527] ehci-platform 5800d000.usb: new USB bus registered, assigned bus number 2
[    2.802069] ehci-platform 5800d000.usb: irq 75, io mem 0x5800d000
[    2.829166] ehci-platform 5800d000.usb: USB 2.0 started, EHCI 1.00
[    2.835387] hub 2-0:1.0: USB hub found
[    2.837820] hub 2-0:1.0: 2 ports detected
[    2.843655] ohci-platform 5800c000.usb: Generic Platform OHCI controller
[    2.848982] ohci-platform 5800c000.usb: new USB bus registered, assigned bus number 3
[    2.857389] ohci-platform 5800c000.usb: irq 45, io mem 0x5800c000
[    2.934566] hub 3-0:1.0: USB hub found
[    2.937003] hub 3-0:1.0: 2 ports detected
[    2.944293] input: pmic_onkey as /devices/platform/soc/5c002000.i2c/i2c-1/1-0033/5c002000.i2c:stpmic@33:onkey/input/input0
[    2.959781] [drm] Initialized stm 1.0.0 20170330 for 5a001000.display-controller on minor 0
[    3.008138] Console: switching to colour frame buffer device 100x30
[    3.030009] stm32-display 5a001000.display-controller: [drm] fb0: stmdrmfb frame buffer device
[    3.122904] stm32-dwmac 5800a000.ethernet eth0: PHY [stmmac-0:00] driver [Micrel KSZ8081 or KSZ8091] (irq=POLL)
[    3.132530] stm32-dwmac 5800a000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
[    3.150511] dwmac4: Master AXI performs any burst length
[    3.154398] stm32-dwmac 5800a000.ethernet eth0: No Safety Features support found
[    3.162079] stm32-dwmac 5800a000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported
[    3.170642] stm32-dwmac 5800a000.ethernet eth0: registered PTP clock
[    3.177562] stm32-dwmac 5800a000.ethernet eth0: configuring for phy/rmii link mode
[    3.419113] usb 1-1: new full-speed USB device number 2 using dwc2
[    3.687148] input: ILITEK ILITEK-TP as /devices/platform/soc/49000000.usb-otg/usb1/1-1/1-1:1.0/0003:222A:0001.0001/input/input1
[    3.698097] hid-multitouch 0003:222A:0001.0001: input,hidraw0: USB HID v1.10 Device [ILITEK ILITEK-TP] on usb-49000000.usb-otg-1/input0
[    3.713869] input: ILITEK ILITEK-TP Mouse as /devices/platform/soc/49000000.usb-otg/usb1/1-1/1-1:1.1/0003:222A:0001.0002/input/input2
[    3.725526] hid-generic 0003:222A:0001.0002: input,hidraw1: USB HID v1.10 Mouse [ILITEK ILITEK-TP] on usb-49000000.usb-otg-1/input1
[    6.320796] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[    6.359106] IP-Config: Complete:
[    6.360954]      device=eth0, hwaddr=0a:7f:53:9f:1a:77, ipaddr=192.168.0.89, mask=255.255.255.0, gw=192.168.0.254
[    6.371211]      host=etra, domain=, nis-domain=(none)
[    6.376377]      bootserver=192.168.0.169, rootserver=192.168.0.169, rootpath=
[    6.376828] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[    6.396413] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[    6.401928] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[    6.409626] ALSA device list:
[    6.410396] cfg80211: failed to load regulatory.db
[    6.413189]   No soundcards found.
[    6.465895] VFS: Mounted root (nfs filesystem) on device 0:17.
[    6.473236] devtmpfs: mounted
[    6.476923] Freeing unused kernel image (initmem) memory: 1024K
[    6.509601] Run /sbin/init as init process
[    7.164993] systemd[1]: System time before build time, advancing clock.
[    8.858278] NET: Registered PF_INET6 protocol family
[    9.036621] Segment Routing with IPv6
[    9.038976] In-situ OAM (IOAM) with IPv6
[    9.249571] systemd[1]: systemd 250.5+ running in system mode (+PAM -AUDIT -SELINUX -APPARMOR +IMA -SMACK -SECCOMP -GCRYPT -GNUTLS -OPENSSL -ACL +BLKID -CURL -ELFUTILS -FIDO2 -IDN2 -IDN +IPTC +KMOD -LIBCRYPTSETUP +LIBFDISK -PCRE2 -PWQUALITY -P11KIT -QRENCODE -BZIP2 -LZ4 -XZ -ZLIB +ZSTD -BPF_FRAMEWORK -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=hybrid)
[    9.281000] systemd[1]: Detected architecture arm.

Welcome to ST OpenSTLinux - Weston - (A Yocto Project Based Distro) 4.0.4-snapshot-20230408 (kirkstone)!

[    9.515713] systemd[1]: Hostname set to <desk-mp1>.
[    9.537741] systemd[1]: Initializing machine ID from random generator.
[    9.656925] systemd[1]: Using hardware watchdog 'Software Watchdog', version 0, device /dev/watchdog0
[    9.664999] systemd[1]: Watchdog running with a timeout of 32s.
[   14.233967] systemd[1]: /lib/systemd/system/mount-partitions.service:9: Standard output type syslog is obsolete, automatically updating to journal. Please update your unit file, and consider removing the setting altogether.
[   14.289772] systemd[1]: Queued start job for default target Multi-User System.
[   14.368558] systemd[1]: Created slice Slice /system/getty.
[  OK  ] Created slice Slice /system/getty.
[   14.413806] systemd[1]: Created slice Slice /system/modprobe.
[  OK  ] Created slice Slice /system/modprobe.
[   14.463714] systemd[1]: Created slice Slice /system/serial-getty.
[  OK  ] Created slice Slice /system/serial-getty.
[   14.503013] systemd[1]: Created slice User and Session Slice.
[  OK  ] Created slice User and Session Slice.
[   14.540207] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[  OK  ] Started Dispatch Password …ts to Console Directory Watch.
[   14.580065] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[  OK  ] Started Forward Password R…uests to Wall Directory Watch.
[   14.620176] systemd[1]: Reached target Path Units.
[  OK  ] Reached target Path Units.
[   14.659576] systemd[1]: Reached target Remote File Systems.
[  OK  ] Reached target Remote File Systems.
[   14.699515] systemd[1]: Reached target Slice Units.
[  OK  ] Reached target Slice Units.
[   14.729577] systemd[1]: Reached target Swaps.
[  OK  ] Reached target Swaps.
[   14.798763] systemd[1]: Listening on RPCbind Server Activation Socket.
[  OK  ] Listening on RPCbind Server Activation Socket.
[   14.839771] systemd[1]: Reached target RPC Port Mapper.
[  OK  ] Reached target RPC Port Mapper.
[   14.883395] systemd[1]: Listening on Syslog Socket.
[  OK  ] Listening on Syslog Socket.
[   14.949848] systemd[1]: Listening on Process Core Dump Socket.
[  OK  ] Listening on Process Core Dump Socket.
[   14.990227] systemd[1]: Listening on initctl Compatibility Named Pipe.
[  OK  ] Listening on initctl Compatibility Named Pipe.
[   15.075919] systemd[1]: Journal Audit Socket was skipped because of a failed condition check (ConditionSecurity=audit).
[   15.089365] systemd[1]: Listening on Journal Socket (/dev/log).
[  OK  ] Listening on Journal Socket (/dev/log).
[   15.131121] systemd[1]: Listening on Journal Socket.
[  OK  ] Listening on Journal Socket.
[   15.173872] systemd[1]: Listening on Network Service Netlink Socket.
[  OK  ] Listening on Network Service Netlink Socket.
[   15.216743] systemd[1]: Listening on udev Control Socket.
[  OK  ] Listening on udev Control Socket.
[   15.250605] systemd[1]: Listening on udev Kernel Socket.
[  OK  ] Listening on udev Kernel Socket.
[   15.293212] systemd[1]: Listening on User Database Manager Socket.
[  OK  ] Listening on User Database Manager Socket.
[   15.330842] systemd[1]: Huge Pages File System was skipped because of a failed condition check (ConditionPathExists=/sys/kernel/mm/hugepages).
[   15.351178] systemd[1]: Mounting POSIX Message Queue File System...
         Mounting POSIX Message Queue File System...
[   15.398093] systemd[1]: Mounting Kernel Debug File System...
         Mounting Kernel Debug File System...
[   15.437485] systemd[1]: Mounting Kernel Trace File System...
         Mounting Kernel Trace File System...
[   15.486853] systemd[1]: Mounting Temporary Directory /tmp...
         Mounting Temporary Directory /tmp...
[   15.532023] systemd[1]: Starting Create List of Static Device Nodes...
         Starting Create List of Static Device Nodes...
[   15.578425] systemd[1]: Starting Load Kernel Module configfs...
         Starting Load Kernel Module configfs...
[   15.618035] systemd[1]: Starting Load Kernel Module drm...
         Starting Load Kernel Module drm...
[   15.658288] systemd[1]: Starting Load Kernel Module fuse...
         Starting Load Kernel Module fuse...
[   15.708218] systemd[1]: Starting Mount partitions...
         Starting Mount partitions...
[   15.754965] systemd[1]: Starting RPC Bind...
         Starting RPC Bind...
[   15.792506] systemd[1]: File System Check on Root Device was skipped because of a failed condition check (ConditionPathIsReadWrite=!/).
[   15.829805] systemd[1]: Starting Journal Service...
         Starting Journal Service...
[   15.909746] systemd[1]: Load Kernel Modules was skipped because all trigger condition checks failed.
[   15.940986] systemd[1]: Mounting NFSD configuration filesystem...
         Mounting NFSD configuration filesystem...
[   16.021919] systemd[1]: Starting Generate network units from Kernel command line...
         Starting Generate network …ts from Kernel command line...
[   16.071364] systemd[1]: Starting Remount Root and Kernel File Systems...
         Starting Remount Root and Kernel File Systems...
[   16.125471] systemd[1]: Starting Apply Kernel Variables...
         Starting Apply Kernel Variables...
[   16.170783] systemd[1]: Starting Coldplug All udev Devices...
         Starting Coldplug All udev Devices...
[   16.349626] systemd[1]: Started RPC Bind.
[  OK  ] Started RPC Bind.
[   16.398954] systemd[1]: Mounted POSIX Message Queue File System.
[  OK  ] Mounted POSIX Message Queue File System.
[   16.418574] systemd[1]: Mounted Kernel Debug File System.
[  OK  ] Mounted Kernel Debug File System.
[   16.462920] systemd[1]: Mounted Kernel Trace File System.
[  OK  ] Mounted Kernel Trace File System.
[   16.500812] systemd[1]: Started Journal Service.
[  OK  ] Started Journal Service.
[  OK  ] Mounted Temporary Directory /tmp.
[  OK  ] Finished Create List of Static Device Nodes.
[  OK  ] Finished Load Kernel Module configfs.
[  OK  ] Finished Load Kernel Module drm.
[  OK  ] Finished Load Kernel Module fuse.
[  OK  ] Finished Mount partitions.
[FAILED] Failed to mount NFSD configuration filesystem.
See 'systemctl status proc-fs-nfsd.mount' for details.
[DEPEND] Dependency failed for NFS server and services.
[DEPEND] Dependency failed for NFS Mount Daemon.
[  OK  ] Finished Generate network units from Kernel command line.
[  OK  ] Finished Remount Root and Kernel File Systems.
[  OK  ] Finished Apply Kernel Variables.
         Mounting FUSE Control File System...
         Mounting Kernel Configuration File System...
[  OK  ] Started Starts Psplash Boot screen.
         Starting Resize root files…to fit available disk space...
         Starting Flush Journal to Persistent Storage...
         Starting Create System Users...
[   17.391122] systemd-journald[593]: Received client request to flush runtime journal.
[  OK  ] Mounted FUSE Control File System.
[  OK  ] Mounted Kernel Configuration File System.
[  OK  ] Finished Flush Journal to Persistent Storage.
[  OK  ] Finished Create System Users.
         Starting Create Static Device Nodes in /dev...
[  OK  ] Finished Create Static Device Nodes in /dev.
[  OK  ] Reached target Preparation for Local File Systems.
         Mounting /var/volatile...
         Starting Rule-based Manage…for Device Events and Files...
[  OK  ] Finished Coldplug All udev Devices.
[  OK  ] Mounted /var/volatile.
         Starting Wait for udev To …plete Device Initialization...
         Starting Load/Save Random Seed...
[  OK  ] Started Rule-based Manager for Device Events and Files.
[   18.986106] random: crng init done
[  OK  ] Finished Load/Save Random Seed.
[  OK  ] Created slice Slice /system/systemd-backlight.
         Starting Load/Save Screen …ness of backlight:backlight...
[  OK  ] Finished Load/Save Screen …htness of backlight:backlight.
[   21.174007] galcore: loading out-of-tree module taints kernel.
[   21.392716] Galcore version 6.4.9.436021
[   21.882137] using random self ethernet address
[   21.907565] using random host ethernet address
[   22.401105] usb0: HOST MAC 5c:c0:78:d3:5c:60
[   22.403995] usb0: MAC 76:b2:0b:ea:da:0d
[   22.407910] dwc2 49000000.usb-otg: bound driver configfs-gadget
[  OK  ] Reached target Hardware activated USB gadget.
[  OK  ] Listening on Load/Save RF …itch Status /dev/rfkill Watch.
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.
[  OK  ] Finished Wait for udev To Complete Device Initialization.
[  OK  ] Finished Resize root files…m to fit available disk space.
[  OK  ] Reached target Local File Systems.
         Starting Rebuild Dynamic Linker Cache...
         Starting Create Volatile Files and Directories...
[  OK  ] Finished Create Volatile Files and Directories.
[FAILED] Failed to start Hardware RNG Entropy Gatherer Daemon.
See 'systemctl status rngd.service' for details.
         Starting Rebuild Journal Catalog...
[FAILED] Failed to start Network Time Synchronization.
See 'systemctl status systemd-timesyncd.service' for details.
[  OK  ] Reached target System Time Set.
         Starting Record System Boot/Shutdown in UTMP...
[  OK  ] Stopped Network Time Synchronization.
[FAILED] Failed to start Network Time Synchronization.
See 'systemctl status systemd-timesyncd.service' for details.
[  OK  ] Finished Record System Boot/Shutdown in UTMP.
[  OK  ] Stopped Network Time Synchronization.
[FAILED] Failed to start Network Time Synchronization.
See 'systemctl status systemd-timesyncd.service' for details.
[  OK  ] Finished Rebuild Journal Catalog.
[  OK  ] Stopped Network Time Synchronization.
[FAILED] Failed to start Network Time Synchronization.
See 'systemctl status systemd-timesyncd.service' for details.
[  OK  ] Stopped Network Time Synchronization.
[FAILED] Failed to start Network Time Synchronization.
See 'systemctl status systemd-timesyncd.service' for details.
[  OK  ] Stopped Network Time Synchronization.
[FAILED] Failed to start Network Time Synchronization.
See 'systemctl status systemd-timesyncd.service' for details.
[  OK  ] Finished Rebuild Dynamic Linker Cache.
         Starting Update is Completed...
[  OK  ] Finished Update is Completed.
[  OK  ] Reached target System Initialization.
[  OK  ] Started Daily rotation of log files.
[  OK  ] Started Daily Cleanup of Temporary Directories.
[  OK  ] Reached target Timer Units.
[  OK  ] Listening on Avahi mDNS/DNS-SD Stack Activation Socket.
[  OK  ] Listening on D-Bus System Message Bus Socket.
[  OK  ] Listening on dropbear.socket.
[  OK  ] Reached target Socket Units.
[  OK  ] Reached target Basic System.
[  OK  ] Started Job spooling tools.
[  OK  ] Started Periodic Command Scheduler.
         Starting D-Bus System Message Bus...
         Starting IPv6 Packet Filtering Framework...
         Starting IPv4 Packet Filtering Framework...
         Starting Hold until boot process finishes up...
[  OK  ] Started System Logging Service.
         Starting Resets System Activity Logs...
syslogd[805]: Error opening log file: /var/log/auth.log: No such file or directory
syslogd[805]: Error opening log file: /var/log/syslog: No such file or directory
syslogd[805]: Error opening log file: /var/log/kern.log: No such file or directory
syslogd[805]: Error opening log file: /var/log/mail.log: No such file or directory
[FAILED] Failed to start User Login Management.
See 'systemctl status systemd-logind.service' for details.
syslogd[805]: Error opening log file: /var/log/mail.err: No such file or directory
         Starting Userfs cleanup package...
syslogd[805]: Error opening log file: /var/log/messages: No such file or directory
[  OK  ] Finished IPv6 Packet Filtering Framework.
[  OK  ] Started D-Bus System Message Bus.
[  OK  ] Finished IPv4 Packet Filtering Framework.
[  OK  ] Finished Hold until boot process finishes up.
[FAILED] Failed to start Resets System Activity Logs.
See 'systemctl status sysstat.service' for details.
[  OK  ] Reached target Preparation for Network.
[  OK  ] Stopped User Login Management.
         Starting Load Kernel Module drm...
         Starting Network Configuration...
         Starting Check if the gpu …orrect weston configuration...
[  OK  ] Finished Load Kernel Module drm.
[FAILED] Failed to start User Login Management.
See 'systemctl status systemd-logind.service' for details.
[  OK  ] Stopped User Login Management.
         Starting Load Kernel Module drm...
[  OK  ] Finished Load Kernel Module drm.
[FAILED] Failed to start User Login Management.
See 'systemctl status systemd-logind.service' for details.
[  OK  ] Stopped User Login Management.
         Starting Load Kernel Module drm...
[  OK  ] Finished Load Kernel Module drm.
[FAILED] Failed to start User Login Management.
See 'systemctl status systemd-logind.service' for details.
[  OK  ] Stopped User Login Management.
         Starting Load Kernel Module drm...
[  OK  ] Finished Check if the gpu … correct weston configuration.
[  OK  ] Started Network Configuration.
[  OK  ] Finished Load Kernel Module drm.
[FAILED] Failed to start User Login Management.
See 'systemctl status systemd-logind.service' for details.
[FAILED] Failed to start Network Name Resolution.
See 'systemctl status systemd-resolved.service' for details.
[  OK  ] Reached target Network.
[  OK  ] Reached target Host and Network Name Lookups.
         Starting Avahi mDNS/DNS-SD Stack...
[  OK  ] Started IIO Daemon.
         Starting Real time performance monitoring...
[  OK  ] Started NFS status monitor for NFSv2/3 locking..
[FAILED] Failed to start Respond to IPv6 Node Information Queries.
See 'systemctl status ninfod.service' for details.
[FAILED] Failed to start Network Router Discovery Daemon.
See 'systemctl status rdisc.service' for details.
         Starting Permit User Sessions...
         Starting Target Communication Framework agent...
[  OK  ] Started Xinetd A Powerful Replacement For Inetd.
[FAILED] Failed to start Real time performance monitoring.
See 'systemctl status netdata.service' for details.
[  OK  ] Finished Permit User Sessions.
[  OK  ] Started Avahi mDNS/DNS-SD Stack.
[  OK  ] Started Target Communication Framework agent.
[  OK  ] Started Getty on tty1.
[  OK  ] Started Serial Getty on ttySTM0.
[  OK  ] Reached target Login Prompts.
[  OK  ] Stopped User Login Management.
         Starting Load Kernel Module drm...
[  OK  ] Stopped Network Name Resolution.
[FAILED] Failed to start Network Name Resolution.
See 'systemctl status systemd-resolved.service' for details.
[  OK  ] Started Weston, a Wayland …mpositor, as a system service.
[  OK  ] Finished Load Kernel Module drm.
[FAILED] Failed to start User Login Management.
See 'systemctl status systemd-logind.service' for details.
[  OK  ] Stopped Network Name Resolution.
[FAILED] Failed to start Network Name Resolution.
See 'systemctl status systemd-resolved.service' for details.
[  OK  ] Stopped Network Name Resolution.
[FAILED] Failed to start Network Name Resolution.
See 'systemctl status systemd-resolved.service' for details.
[  OK  ] Stopped Network Name Resolution.
[FAILED] Failed to start Network Name Resolution.
See 'systemctl status systemd-resolved.service' for details.
         Starting User Database Manager...
[  OK  ] Stopped Network Name Resolution.
[FAILED] Failed to start Network Name Resolution.
See 'systemctl status systemd-resolved.service' for details.
[  OK  ] Started User Database Manager.

ST OpenSTLinux - Weston - (A Yocto Project Based Distro) 4.0.4-snapshot desk-mp1 ttySTM0

desk-mp1 login: root (automatic login)

alias: gawkpath_default not found
alias: gawkpath_prepend not found
alias: gawkpath_append not found
alias: gawklibpath_default not found
alias: gawklibpath_prepend not found
alias: gawklibpath_append not found
root@desk-mp1:~# ls -l /lib/modules/$(uname -r)
total 812
lrwxrwxrwx  1 541 502     63 Jul 26  2023 build -> /home/jenkins/workspace/workspace/DESK-MP1-L-1.x.x_Linux-kernel
drwxr-xr-x  2 541 502   4096 Jul 26  2023 extra
drwxr-xr-x 10 541 502   4096 Jul 26  2023 kernel
-rw-r--r--  1 541 502  91303 Jul 26  2023 modules.alias
-rw-r--r--  1 541 502 105556 Jul 26  2023 modules.alias.bin
-rw-r--r--  1 541 502  21761 Jul 26  2023 modules.builtin
-rw-r--r--  1 541 502  45829 Jul 26  2023 modules.builtin.alias.bin
-rw-r--r--  1 541 502  24366 Jul 26  2023 modules.builtin.bin
-rw-r--r--  1 541 502 137570 Jul 26  2023 modules.builtin.modinfo
-rw-r--r--  1 541 502  54201 Jul 26  2023 modules.dep
-rw-r--r--  1 541 502  85427 Jul 26  2023 modules.dep.bin
-rw-r--r--  1 541 502     94 Jul 26  2023 modules.devname
-rw-r--r--  1 541 502  26264 Jul 26  2023 modules.order
-rw-r--r--  1 541 502    190 Jul 26  2023 modules.softdep
-rw-r--r--  1 541 502  84407 Jul 26  2023 modules.symbols
-rw-r--r--  1 541 502 108328 Jul 26  2023 modules.symbols.bin
lrwxrwxrwx  1 541 502     63 Jul 26  2023 source -> /home/jenkins/workspace/workspace/DESK-MP1-L-1.x.x_Linux-kernel
root@desk-mp1:~#

QT5 App[edit | edit source]

To run QT5 applications in the target after booting via NFS it is first necessary to set the environment correctly, to do this you need to execute these 2 commands:

/etc/profile.d/qt-wayland.sh
export XDG_RUNTIME_DIR=/home/weston

Development[edit | edit source]

Synchronizing the git repositories[edit | edit source]

In DESK-MP1-L the following source trees are clones of the correspondent DAVE Embedded Systems git repositories: stm32cubemx.git

Component	GIT Remote
STM32CubeMX Configuration file (`.ioc`)	`https://git.dave.eu/git/desk-mp1-l/stm32cubemx.git`
ATF	`https://git.dave.eu/git/desk-mp1-l/arm-trusted-firmware.git`
U-Boot	`https://git.dave.eu/git/desk-mp1-l/u-boot.git`
Linux kernel	`https://git.dave.eu/git/desk-mp1-l/linux.git`
Boot Image	`https://git.dave.eu/git/desk-mp1-l/desk-mp1-boot-image.git`
Yocto BSP	`https://git.dave.eu/git/desk-mp1-l/desk-mp1-l-bsp.git`
Yocto meta DESK	`https://git.dave.eu/git/desk-mp1-l/meta-desk-mp1.git`

For more information about the access to these repositories, please refer to this link.

Access to DAVE Embedded Systems' git repositories is granted to development kit's owners only. Please refer to this page for detailed instructions on how to get access.

Instructions[edit | edit source]

The components listed in the table above can be kept in sync and up to date with DAVE Embedded Systems' repositories.

Once the git account has been enabled, the developer can:

clone the repository with the git clone <git_remote_repository> command
synchronize a source tree entering the repository directory and launching the git fetch origin command.

Please note that git fetch doesn't merge the commits on the current branch. To do that, the developer should run the git merge command or replace the fetch-merge process with a single git pull command. Please note that the recommended method is the fetch-merge process. For further information on Git, please refer to the official Git Documentation

Using the STM32CubeMX Configuration file[edit | edit source]

This page explains the role of the STM32CubeMX Configuration file (.ioc) in the context of the DESK-MP1-L. Each hardware platform supported by the DESK-MP1-L has a specific .ioc file. For customers' convenience, these files are available in a dedicated repository available named stm32cubemx.git.

Generating the Device Tree files[edit | edit source]

U-Boot/Linux Device Tree (DT) files provided by the DESK-MX1-L are generated starting from a STM32CubeMX Configuration file as illustrated in the following image.

The first step consisted of creating a .ioc file with the help of the STM32CubeMX tool. The file name is the model version of the hardware platforms it is associated with. For instance, the file DCSB5000DD1R.ioc refers to the model of the SBC ETRA included in the evaluation kit (for more details about model version and serial numbers, please see this page).

STM32CubeMX is then used for exporting a set of intermediate files including the Device Trees. These DTs are subsequently tweaked by hand to add further hardware-specific definitions that it is not possible to handle with STM32CubeMX. The final DTs, along with other files, are eventually pushed to GitLab repositories accessible by the customers. These repositories are the same ones used by Yocto to build the Linux BSP.

Developing applications for the ARM Cortex M4[edit | edit source]

Another typical usage of the STM32CubeMX Configuration file is related to the development of applications for the ARM Cortex M4. In this case, the .ioc file can be imported in the STM32CubeIDE to start one's own project.

Building Boot image[edit | edit source]

Quick reference[edit | edit source]

Repository Information
URL	https://git.dave.eu/git/desk-mp1-l/desk-mp1-boot-image.git
stable branch	desk-mp1-l-1.x.x
stable tag	desk-mp1-l-1.0.1

U-Boot defconfigs
Platform	SOM ConfigID	CB ConfigID	defconfig
SBC ETRA	0x00000001	0x00000001	stm32mp15_desk_mp1_usd_defconfig

Instructions[edit | edit source]

It is assumed that the development environment has been set up properly as described here.

To build the boot binaries you need to perform this steps:

start the Linux development VM and login into the system
open a terminal window and cd into desk-mp1-boot-image directory

cd ~/desk-mp1-l/desk-mp1-boot-image

in case of needs you can update your local repository with the following git command

git pull --recurse-submodules

configure the build environment

source ~/desk-mp1-l/desk-mp1-l-1.0.1_env.sh

use the follow script:
- build_start.sh: for build boot binary ATF + U-boot, the result can be find on boot-binary-files/uSD/.
- build_and_put_to_tftpboot_dir.sh: for build boot binary ATF + U-boot and have the result on /tftpboot/desk-mp1-l/boot-binary-files/uSD/.

on each script file there are configuration section

#ATF_MD=SD \
#ATF_LOGLEVEL=50 \ # if you set this, ATF_DEBUG will be ignored
#ATF_DEBUG=1 \
#OUTPUT_BINARY="$PWD/boot-binary-files" \
#MAKECONF="-j 6 -l 10" \
UBOOT_DTS=stm32mp157a-dcsb5000dd1r \
UBOOT_DEF=stm32mp15_desk_mp1_usd_defconfig \
ATF_DTS=stm32mp157a-dcsb5000dd1r \
./build_all.sh

configurations:
- ATF_MD: default value -> SD, media device from which to boot.
- ATF_LOGLEVEL: default value -> 20, log level of ATF, if you change this value the ATF_DEBUG will be ignored.
- ATF_DEBUG: default value -> 1, enable debug.
- OUTPUT_BINARY: default value -> "$PWD/boot-binary-files", output binary directory.
- MAKECONF: default value -> "-j 32 -l 50", configuration for makefile.
- UBOOT_DTS: no default value, device tree name of u-boot to build, value needed for build!
- UBOOT_DEF: no default value, name of defconfig to use on build of u-boot, value needed for build!
- ATF_DTS: no default value, devce tree name of ATF to build, value needed for build!

Default configuration (if not specified the default value is used):
- boot from uSD:
  - UBOOT_DTS=stm32mp157a-dcsb5000dd1r
  - UBOOT_DEF=stm32mp15_desk_mp1_usd_defconfig
  - ATF_DTS=stm32mp157a-dcsb5000dd1r

i.e.

./build_start.sh

Building Linux[edit | edit source]

Quick reference[edit | edit source]

Repository Information
URL	https://git.dave.eu/git/desk-mp1-l/linux.git
stable branch	desk-mp1-l-1.x.x
stable tag	desk-mp1-l-1.0.1

Build Information
Device trees	Platform	DTB
defconfig	multi_v7_desk_mp1_defconfig
Kernel binary	UIMAGE_LOADADDR=0xC2000040 uImage
	SBC ETRA	stm32mp157a-dcsb5000dd1r.dtb

Instructions[edit | edit source]

It is assumed that the development environment has been set up properly as described here.

start the Linux development VM and login into the system
open a terminal window and cd into Linux kernel source code

cd ~/desk-mp1-l/linux

in case of needs you can update your local repository with the following git command

git pull

configure the build environment

source ~/desk-mp1-l/desk-mp1-l-1.0.1_env.sh

enter the source tree directory and run the following commands:

make multi_v7_desk_mp1_defconfig
make LOADADDR=0xC2000040 uImage stm32mp157a-dcsb5000dd1r.dtb

NOTE: this is the default configuration suitable for latest target.

The former command selects the default DESK-MP1-L configuration, while the latter builds the kernel binary image with the required u-boot header and the kernel device tree.

Default Linux kernel configuration can be changed by using the standard menuconfig, xconfig, or gconfig make target. Subsequent builds just require uImage make target to update the binary image. Once the build process is complete, the kernel binary image is stored into the arch/arm/boot/uImage file. Both this file and the kernel device tree can be copied to the tftp root directory /tftpboot/desk-mp1-l/ with the following commands:

cp arch/arm/boot/uImage /tftpboot/desk-mp1-l/
cp arch/arm/boot/dts/*.dtb /tftpboot/desk-mp1-l/

Usually, kernel modules are installed with make modules_install command, but this method installs the modules into the /lib/modules directory of you MVM, which is not what you want.

A better way to deploy kernel modules while cross-compiling is

generate a .tar.gz archive
install this archive into the target root file system

User can create such an archive, for example, using the following commands:

make modules
mkdir modules-install
make INSTALL_MOD_PATH=modules-install modules_install

cd modules-install && tar cvzf ../modules.tar.gz . && cd ..

Now copy modules.tar.gz into the target root file system and install them as root with the following command

tar xvzf modules.tar.gz -C /

Building the Yocto BSP[edit | edit source]

Quick reference[edit | edit source]

Repository Information
Repository	BSP Manifest	Yocto BSP Layer
URL	https://git.dave.eu/git/desk-mp1-l/desk-mp1-l-bsp.git	https://git.dave.eu/git/desk-mp1-l/meta-desk-mp1.git
stable branch	kirkstone	kirkstone
stable tag	desk-mp1-l-1.0.1	desk-mp1-l-1.0.1

Build targets
Distro	Image name	Description
openstlinux-eglfs	dave-image-devel	This image include tools for development/debugging
openstlinux-weston	dave-image-qt5-weston	In addition `dave-image-devel`, this image provides Qt5 libraries using the `weston` backend with `wayland` server

Introduction[edit | edit source]

As known, in addition to a bootloader and the o.s. kernel, an embedded Linux system needs a root file system to operate. The root file system must contain everything needed to support the Linux system (applications, settings, data, etc.). The root file system is the file system that is contained on the same partition on which the root directory is located. The Linux kernel, at the end of its startup stage, mounts the root file system on the configured root device and finally launches the /sbin/init, the first user space process and "father" of all the other processes. For more information on the Linux filesystem, please refer to http://www.thegeekstuff.com/2010/09/linux-file-system-structure/.

desk-mp1-l provides one (or more) pre-built root file system, that can be used during the evaluation/development/deployment cycle. For instance, the root file system included in the dave-image-qt5-weston image is suited for the development phase, since it provides a relatively rich set of packages including tools and libraries used to debug the application code. The pre-built root file systems are located here: /home/dvdk/<target_name>/rfs/<kit_name>.

Besides the pre-built root file systems, DAVE also provides a rich repository containing pre-built applications and libraries. These packages can be easily installed on the target by using the apt-get tool. Please refer to this section for more details.

To generate the supported root file systems, the build of the Yocto BSP has to be run. The output of this process is an image containing the U-Boot binary file, the Linux kernel image, and the selected root file system image. The following sections describe in detail how to execute this operation.

For more general information regarding the Yocto build system, please refer the dedicated category page.

Yocto build system can be cumbersome and its learning curve is generally quite steep for developers who have no or little familiarity with the embedded Linux world. For these reasons, "yoctoization" of users' applications as described here may be a hard task. DAVE Embedded Systems, however, can provide consultant services to support our customers dealing with such issues. For more details, please contact our Sales Department.

How to build the Yocto BSP images including the U-Boot binary file, the Linux kernel image, and the target root file system image[edit | edit source]

The following procedure requires the access to the DAVE Embedded Systems' git repositories. The access to such repositories is granted to development kit's owners only. Please refer to this page for detailed instructions on how to get it.

This process requires a lot of hardware resources in terms of disk storage, RAM, and processing power. For this reason, it also is recommended to consider the use of a physical machine. For more details on this topic, please refer to this document which talks about the advanced use of the Yocto build system.

Initialize the build environment[edit | edit source]

Before running the build, the environment must be initialized properly.

desk-mp1-l Yocto BSP uses git-repo tool to fetch all the required git repositories. To install it, please use the following commands:

dvdk@vagrant:~/desk-mp1-l$ curl http://commondatastorage.googleapis.com/git-repo-downloads/repo-1 > repo
dvdk@vagrant:~/desk-mp1-l$ chmod a+x repo
dvdk@vagrant:~/desk-mp1-l$ ./repo init -u https://git.dave.eu/git/desk-mp1-l/desk-mp1-l-bsp.git -b refs/tags/desk-mp1-l-1.0.1
dvdk@vagrant:~/desk-mp1-l$ ./repo sync
dvdk@vagrant:~/desk-mp1-l$ EULA=1 DISTRO=openstlinux-weston MACHINE=desk-mp1 source ./desk-setup-release.sh

Running the build[edit | edit source]

Please note that even the basic root file system requires a few hours to build on a mid/hi range desktop (4-8 cores, 16-32 GiB RAM) also depending on your Internet connection speed (all sources are fetched from the network). Nearly 100GiB of disk space is required for the build. The process may be slowed down significantly since the performances of a virtual machine are reduced if compared to the physical hardware. Thus, it's recommended to check the hardware capabilities of the host system and, when building with Yocto is required, to consider the following options:

Migrating the build system to a physical machine
Assuming that the host system has the required resources, extending the hardware capabilities of the default MVM (e.g. adding more cores and disk space).

Once completed the initialization phase, developers can launch the Yocto image build process with the following commands:

dvdk@vagrant:~/desk-mp1-l/build$ bitbake <target-image-name>

Where <target-image-name> is one of the images listed in here.

Once the build process is completed, the resulting files (the ATF, U-Boot binaries, the Linux kernel image, the device tree blob, the .tar.xz compressed root file system image, etc.) will be available in build/tmp/deploy/images/desk-mp1-l. The artifacts produces by the build process include WIC files as well. These files are partitioned images used to create bootable SD cards as detailed here.

Generating the SDKs[edit | edit source]

After creating an image as described in the previous version, the corresponding SDK can be generated by issuing the following command:

bitbake <target-image-name> -c populate-sdk

Again, replace <target-image-name> with one of the images listed in here.

Building additional packages[edit | edit source]

To build additional packages:

dvdk@vagrant:~/desk-mp1-l$ EULA=1 DISTRO=openstlinux-weston MACHINE=desk-mp1 source ./desk-setup-release.sh
dvdk@vagrant:~/desk-mp1-l/build$

And then can run any of the bitbake command.

dvdk@vagrant:~/desk-mp1-l/build$ bitbake memtester

The resulting packages can be found inside build/tmp-glibc/deploy/deb.

dvdk@vagrant:~/desk-mp1-l/build$ ls -l tmp-glibc/deploy/deb/cortexa7t2hf-neon-vfpv4/memtester*
-rw-r--r-- 2 dvdk dvdk 17712 Mar  1 08:57 tmp-glibc/deploy/deb/cortexa7t2hf-neon-vfpv4/memtester-dbg_4.5.1-r0.0_armhf.deb
-rw-r--r-- 2 dvdk dvdk   904 Mar  1 08:57 tmp-glibc/deploy/deb/cortexa7t2hf-neon-vfpv4/memtester-dev_4.5.1-r0.0_armhf.deb
-rw-r--r-- 2 dvdk dvdk  3096 Mar  1 08:57 tmp-glibc/deploy/deb/cortexa7t2hf-neon-vfpv4/memtester-doc_4.5.1-r0.0_armhf.deb
-rw-r--r-- 2 dvdk dvdk  6432 Mar  1 08:57 tmp-glibc/deploy/deb/cortexa7t2hf-neon-vfpv4/memtester-src_4.5.1-r0.0_armhf.deb
-rw-r--r-- 2 dvdk dvdk  6492 Mar  1 08:57 tmp-glibc/deploy/deb/cortexa7t2hf-neon-vfpv4/memtester_4.5.1-r0.0_armhf.deb

How to create a bootable microSD card[edit | edit source]

The process is relatively straightforward: it consists of writing the WIC file of interest generated by Yocto onto the SD card. There are multiple ways to do that.

The most common is to use the well-known BalenaEtcher tool (download BalenaEtcher). The following instruction explains how to use it on a Windows host. The procedure is similar when working with a Linux host.

Download the desired binary image to flash (*.wic or *.wic.bz2)
- Among the binaries made available in the mirror there are several *.wic.bz2 files for the available releases. In particular, there is the desk-image-qt5-openstlinux-weston-desk-mp1.wic.bz2 file. This image is the one used to program the microSD card delivered along with the evaluation kit.
Connect the microSD card to the PC Host
Open BalenaEtcher tool
Once the tool is open:
- Select the binary to flash by clicking on "Flash from file"
- Select the microSD to flash by clicking on "Select target"
- Flash the uSD by clicking o "Flash".

Unpacking	Flashing	Validating

Flashing the microSD card with STM32CubeProgrammer[edit | edit source]

Another way is to use the STM32CubeProgrammer tool, which has a little different approach than BalenaEtcher as it allows to program the card without removing it from the target. Furthermore, STM32CubeProgrammer makes use of several files generated by Yocto instead of the WIC image. For the sake of simplicity, the following procedure shows how to run STM32CubeProgrammer on the MVM so that it can access these files directly. By default, STM32CubeProgrammer is not installed in the MVM. Please refer to the STM documentation for installation instructions. In principle, the same procedure can be executed on a Windows host as well. It is worth remembering that the programming procedure is obviously much slower when executed in a virtual machine like MVM.

First of all, execute the build with Yocto to generate the required files. See here for more information.

dvdk@vagrant:~/desk-mp1-l$ curl http://commondatastorage.googleapis.com/git-repo-downloads/repo-1 > repo
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 29945  100 29945    0     0   696k      0 --:--:-- --:--:-- --:--:--  696k
dvdk@vagrant:~/desk-mp1-l$ chmod a+x repo
dvdk@vagrant:~/desk-mp1-l$ ./repo init -u https://git.dave.eu/git/desk-mp1-l/desk-mp1-l-bsp.git -b refs/tags/desk-mp1-l-1.0.1
...
repo has been initialized in /home/dvdk/desk-mp1-l
dvdk@vagrant:~/desk-mp1-l$ ./repo sync
...
dvdk@vagrant:~/desk-mp1-l$ EULA=1 DISTRO=openstlinux-weston MACHINE=desk-mp1 source ./desk-setup-release.sh
...
dvdk@vagrant:~/desk-mp1-l/build$ bitbake dave-image-qt5-weston
...
dvdk@vagrant:~/desk-mp1-l/build$ EULA=1 DISTRO=openstlinux-weston MACHINE=desk-mp1 source ./desk-setup-release.sh
...
dvdk@vagrant:~/desk-mp1-l/build$ bitbake dave-image-qt5-weston

Open STM32CubeProgrammer, click on Open file, and select the tsv file /home/dvdk/desk-mp1-l/build/tmp-glibc/deploy/images/desk-mp1/flashlayout_dave-image-qt5-weston/trusted/FlashLayout_sdcard_stm32mp157a-dcsb5000dd1r-trusted.tsv.

Click on Browse and select the directory with the artifacts generated by Yocto /home/dvdk/desk-mp1-l/build/tmp-glibc/deploy/images/desk-mp1/.

On the target, change the S1 DIP-switch into ON-ON-ON-OFF.

Connect the board (connector J16) to the host with a USB <-> USB OTG cable.

Add the device detected to the MVM:

Establish the connection with STM32CubeProgrammer tool:

Select USB instead of ST-LINK.
Make sure that the Port value is not No DFU detected. It should be something like USB1.
Click on Connect.

Click on Download for programming the microSD card. Attention: the board resets after the first programming steps, so make sure that the device remains connected to the MVM during the process. Otherwise, repeat the connection steps.

When programming ends, this message appears:

Unplug the OTG cable, power off the target, and change the DIP-switch into ON-OFF-ON-OFF.

Power on the board. If the procedure was completed properly, you will see the typical bootstrap messages on the console:


NOTICE:  CPU: STM32MP157AAB Rev.B
NOTICE:  Model: DAVE desk-mp1 stm32mp157a-dcsb5000dd1r
INFO:    PMIC version = 0x21
INFO:    Reset reason (0x14):
INFO:      Pad Reset from NRST
INFO:    FCONF: Reading TB_FW firmware configuration file from: 0x2ffe2000
INFO:    FCONF: Reading firmware configuration information for: stm32mp_io
INFO:    Using SDMMC
INFO:      Instance 1
INFO:    Boot used partition fsbl1
NOTICE:  BL2: v2.6-stm32mp1-r2.0(debug):desk-mp1-l-1.0.0(709eafce)
NOTICE:  BL2: Built : 08:34:10, Jul 25 2023
INFO:    BL2: Doing platform setup
INFO:    RAM: DDR3-DDR3L 16bits 533000kHz
INFO:    Memory size = 0x20000000 (512 MB)
INFO:    BL2: Loading image id 1
INFO:    Loading image id=1 at address 0x2ffff000
INFO:    Image id=1 loaded: 0x2ffff000 - 0x2ffff226
INFO:    FCONF: Reading FW_CONFIG firmware configuration file from: 0x2ffff000
INFO:    FCONF: Reading firmware configuration information for: dyn_cfg
INFO:    FCONF: Reading firmware configuration information for: stm32mp1_firewall
INFO:    BL2: Loading image id 4
INFO:    Loading image id=4 at address 0x2ffc5000
INFO:    Image id=4 loaded: 0x2ffc5000 - 0x2ffd9820
INFO:    BL2: Skip loading image id 8
INFO:    BL2: Skip loading image id 9
INFO:    BL2: Loading image id 2
INFO:    Loading image id=2 at address 0xc0500000
INFO:    Image id=2 loaded: 0xc0500000 - 0xc0512e30
INFO:    BL2: Loading image id 16
INFO:    Loading image id=16 at address 0x2ffc0000
INFO:    Image id=16 loaded: 0x2ffc0000 - 0x2ffc3ff5
INFO:    BL2: Loading image id 5
INFO:    Loading image id=5 at address 0xc0100000
INFO:    Image id=5 loaded: 0xc0100000 - 0xc01e8ba0
NOTICE:  BL2: Booting BL32
INFO:    Entry point address = 0x2ffc5000
INFO:    SPSR = 0x1d3
NOTICE:  SP_MIN: v2.6-stm32mp1-r2.0(debug):desk-mp1-l-1.0.0(709eafce)
NOTICE:  SP_MIN: Built : 08:34:10, Jul 25 2023
INFO:    ARM GICv2 driver initialized
INFO:    ETZPC: UART1 (3) could be non secure
INFO:    ETZPC: SPI6 (4) could be non secure
INFO:    ETZPC: RNG1 (7) could be non secure
INFO:    ETZPC: HASH1 (8) could be non secure
INFO:    ETZPC: CRYP1 (9) could be non secure
INFO:    ETZPC: I2C6 (12) could be non secure
INFO:    SP_MIN: Initializing runtime services
INFO:    SP_MIN: Preparing exit to normal world
serial_stm32 serial@40010000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19


U-Boot 2021.10-desk-mp1-l-1.0.0 (Jul 25 2023 - 08:53:53 +0000)

CPU: STM32MP157AAB Rev.B
Model: Dave desk-mp1 stm32mp157a-dcsb5000dd1r
Board: Etra in trusted mode (st,stm32mp157a-dcsb5000dd1r)
DRAM:  512 MiB
Clocks:
- MPU : 650 MHz
- MCU : 208.878 MHz
- AXI : 266.500 MHz
- PER : 0 MHz
- DDR : 533 MHz
WDT:   Started with servicing (32s timeout)
NAND:  0 MiB
MMC:   STM32 SD/MMC: 2, STM32 SD/MMC: 0, STM32 SD/MMC: 1
Loading Environment from MMC... *** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
SOM ConfigID#: 00000001
SOM UniqueID#: 39303435:33385105:001e0024
CB ConfigID#: 00000001
CB UniqueID#: 0d000035:c4a4762d
Board: ETRA on SBC
Net:   eth0: ethernet@5800a000
Hit any key to stop autoboot:  0 
switch to partitions #0, OK
mmc0 is current device
1151 bytes read in 4 ms (280.3 KiB/s)
Running bootscript from mmc ...
## Executing script at c2000000
bootscript generated with command "./tools/mkimage -C none -A arm -T script -d boot.src.cmd boot.scr.uimg"
60967 bytes read in 6 ms (9.7 MiB/s)
8766008 bytes read in 374 ms (22.4 MiB/s)
## Booting kernel from Legacy Image at c2000000 ...
   Image Name:   Linux-5.15.67-desk-mp1-l-1.0.0
   Created:      2023-07-25   9:04:16 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    8765944 Bytes = 8.4 MiB
   Load Address: c2000040
   Entry Point:  c2000040
   Verifying Checksum ... OK
## Flattened Device Tree blob at c4000000
   Booting using the fdt blob at 0xc4000000
   XIP Kernel Image
   Loading Device Tree to cffee000, end cffffe26 ... OK
ETZPC: 0x54003000 node disabled, decprot 7=0
ETZPC: 0x48001000 node disabled, decprot 89=2

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.15.67-desk-mp1-l-1.0.0 (oe-user@oe-host) (arm-ostl-linux-gnueabi-gcc (GCC) 11.3.0, GNU ld (GNU Binutils) 2.38.20220708) #1 SMP PREEMPT Tue Jul 25 09:04:16 UTC 2023
[    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: Dave desk-mp1 stm32mp157a-dcsb5000dd1r
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] Reserved memory: created DMA memory pool at 0x10000000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node mcuram2@10000000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x10040000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node vdev0vring0@10040000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x10041000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node vdev0vring1@10041000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x10042000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node vdev0buffer@10042000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x10048000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node mcu_rsc_table@10048000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x30000000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node mcuram@30000000, compatible id shared-dma-pool
[    0.000000] Reserved memory: created DMA memory pool at 0x38000000, size 0 MiB
[    0.000000] OF: reserved mem: initialized node retram@38000000, compatible id shared-dma-pool
[    0.000000] cma: Reserved 128 MiB at 0xd8000000
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x00000000c0000000-0x00000000dfffffff]
[    0.000000]   HighMem  empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00000000c0000000-0x00000000d3ffffff]
[    0.000000]   node   0: [mem 0x00000000d4000000-0x00000000d7ffffff]
[    0.000000]   node   0: [mem 0x00000000d8000000-0x00000000dfffffff]
[    0.000000] Initmem setup node 0 [mem 0x00000000c0000000-0x00000000dfffffff]
[    0.000000] psci: probing for conduit method from DT.
[    0.000000] psci: PSCIv1.1 detected in firmware.
[    0.000000] psci: Using standard PSCI v0.2 function IDs
[    0.000000] psci: MIGRATE_INFO_TYPE not supported.
[    0.000000] psci: SMC Calling Convention v1.2
[    0.000000] percpu: Embedded 17 pages/cpu s37004 r8192 d24436 u69632
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 129920
[    0.000000] Kernel command line: root=/dev/mmcblk1p10 rootwait rw console=ttySTM0,115200
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 300948K/524288K available (13312K kernel code, 1379K rwdata, 3896K rodata, 1024K init, 218K bss, 92268K reserved, 131072K cma-reserved, 0K highmem)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[    0.000000] trace event string verifier disabled
[    0.000000] rcu: Preemptible hierarchical RCU implementation.
[    0.000000] rcu:     RCU event tracing is enabled.
[    0.000000]  Trampoline variant of Tasks RCU enabled.
[    0.000000]  Tracing variant of Tasks RCU enabled.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (virt).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[    0.000002] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[    0.000029] Switching to timer-based delay loop, resolution 41ns
[    0.001195] Console: colour dummy device 80x30
[    0.001268] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[    0.001301] pid_max: default: 32768 minimum: 301
[    0.001618] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.001653] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.003036] CPU: Testing write buffer coherency: ok
[    0.003567] /cpus/cpu@0 missing clock-frequency property
[    0.003637] /cpus/cpu@1 missing clock-frequency property
[    0.003670] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.005405] Setting up static identity map for 0xc0100000 - 0xc0100060
[    0.005671] rcu: Hierarchical SRCU implementation.
[    0.008100] smp: Bringing up secondary CPUs ...
[    0.009497] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.009764] smp: Brought up 1 node, 2 CPUs
[    0.009805] SMP: Total of 2 processors activated (96.00 BogoMIPS).
[    0.009824] CPU: All CPU(s) started in SVC mode.
[    0.010806] devtmpfs: initialized
[    0.032433] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[    0.032846] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.032891] futex hash table entries: 512 (order: 3, 32768 bytes, linear)
[    0.040446] pinctrl core: initialized pinctrl subsystem
[    0.043156] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[    0.046675] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.048584] thermal_sys: Registered thermal governor 'step_wise'
[    0.048965] cpuidle: using governor menu
[    0.049357] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.049390] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.049940] Serial: AMBA PL011 UART driver
[    0.053200] stm32-pm-domain pm_domain: domain core-ret-power-domain registered
[    0.053255] stm32-pm-domain pm_domain: subdomain core-power-domain registered
[    0.053277] stm32-pm-domain pm_domain: domains probed
[    0.087638] platform panel-rgb@0: Fixing up cyclic dependency with 5a001000.display-controller
[    0.106095] Kprobes globally optimized
[    0.121733] SCSI subsystem initialized
[    0.122736] usbcore: registered new interface driver usbfs
[    0.122827] usbcore: registered new interface driver hub
[    0.122911] usbcore: registered new device driver usb
[    0.123328] pps_core: LinuxPPS API ver. 1 registered
[    0.123349] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.123389] PTP clock support registered
[    0.123744] EDAC MC: Ver: 3.0.0
[    0.124928] arm-scmi firmware:scmi: SCMI Notifications - Core Enabled.
[    0.125049] arm-scmi firmware:scmi: SCMI Protocol v2.0 'ST:' Firmware version 0x0
[    0.126512] Advanced Linux Sound Architecture Driver Initialized.
[    0.127690] Bluetooth: Core ver 2.22
[    0.127787] NET: Registered PF_BLUETOOTH protocol family
[    0.127806] Bluetooth: HCI device and connection manager initialized
[    0.127832] Bluetooth: HCI socket layer initialized
[    0.127852] Bluetooth: L2CAP socket layer initialized
[    0.127891] Bluetooth: SCO socket layer initialized
[    0.128960] clocksource: Switched to clocksource arch_sys_counter
[    0.222709] NET: Registered PF_INET protocol family
[    0.223093] IP idents hash table entries: 8192 (order: 4, 65536 bytes, linear)
[    0.224777] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[    0.224852] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.224882] TCP established hash table entries: 4096 (order: 2, 16384 bytes, linear)
[    0.224954] TCP bind hash table entries: 4096 (order: 3, 32768 bytes, linear)
[    0.225057] TCP: Hash tables configured (established 4096 bind 4096)
[    0.225207] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[    0.225265] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
[    0.225617] NET: Registered PF_UNIX/PF_LOCAL protocol family
[    0.226925] RPC: Registered named UNIX socket transport module.
[    0.226961] RPC: Registered udp transport module.
[    0.226975] RPC: Registered tcp transport module.
[    0.226988] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.229353] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 5 counters available
[    0.231542] Initialise system trusted keyrings
[    0.232045] workingset: timestamp_bits=14 max_order=17 bucket_order=3
[    0.243706] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.245211] NFS: Registering the id_resolver key type
[    0.245398] Key type id_resolver registered
[    0.245416] Key type id_legacy registered
[    0.245635] ntfs: driver 2.1.32 [Flags: R/O].
[    0.245943] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[    0.246841] fuse: init (API version 7.34)
[    0.388552] NET: Registered PF_ALG protocol family
[    0.388596] Key type asymmetric registered
[    0.388611] Asymmetric key parser 'x509' registered
[    0.388797] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 245)
[    0.388825] io scheduler mq-deadline registered
[    0.388840] io scheduler kyber registered
[    0.398701] reg11: supplied by regulator-dummy
[    0.399561] reg18: supplied by regulator-dummy
[    0.400029] usb33: supplied by regulator-dummy
[    0.404634] STM32 USART driver initialized
[    0.427643] brd: module loaded
[    0.438559] loop: module loaded
[    0.447889] CAN device driver interface
[    0.450335] pegasus: Pegasus/Pegasus II USB Ethernet driver
[    0.450444] usbcore: registered new interface driver pegasus
[    0.450531] usbcore: registered new interface driver asix
[    0.450616] usbcore: registered new interface driver ax88179_178a
[    0.450696] usbcore: registered new interface driver cdc_ether
[    0.450782] usbcore: registered new interface driver smsc75xx
[    0.450864] usbcore: registered new interface driver smsc95xx
[    0.450930] usbcore: registered new interface driver net1080
[    0.451013] usbcore: registered new interface driver cdc_subset
[    0.451078] usbcore: registered new interface driver zaurus
[    0.451243] usbcore: registered new interface driver cdc_ncm
[    0.452540] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.452600] ehci-platform: EHCI generic platform driver
[    0.452879] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    0.452917] ohci-platform: OHCI generic platform driver
[    0.453740] usbcore: registered new interface driver cdc_acm
[    0.453763] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[    0.453856] usbcore: registered new interface driver usb-storage
[    0.458291] i2c_dev: i2c /dev entries driver
[    0.462476] softdog: initialized. soft_noboot=0 soft_margin=60 sec soft_panic=0 (nowayout=1)
[    0.462512] softdog:              soft_reboot_cmd=<not set> soft_active_on_boot=0
[    0.464460] sdhci: Secure Digital Host Controller Interface driver
[    0.464488] sdhci: Copyright(c) Pierre Ossman
[    0.464502] Synopsys Designware Multimedia Card Interface Driver
[    0.465026] sdhci-pltfm: SDHCI platform and OF driver helper
[    0.466320] ledtrig-cpu: registered to indicate activity on CPUs
[    0.466428] arm-scmi firmware:scmi: Failed. SCMI protocol 17 not active.
[    0.466683] SMCCC: SOC_ID: ID = jep106:0020:0500 Revision = 0x00002000
[    0.467619] hid: raw HID events driver (C) Jiri Kosina
[    0.467904] usbcore: registered new interface driver usbhid
[    0.467928] usbhid: USB HID core driver
[    0.476894] NET: Registered PF_PACKET protocol family
[    0.476955] can: controller area network core
[    0.477074] NET: Registered PF_CAN protocol family
[    0.477096] can: raw protocol
[    0.477114] can: broadcast manager protocol
[    0.477135] can: netlink gateway - max_hops=1
[    0.477579] Bluetooth: RFCOMM TTY layer initialized
[    0.477626] Bluetooth: RFCOMM socket layer initialized
[    0.477680] Bluetooth: RFCOMM ver 1.11
[    0.478143] lib80211: common routines for IEEE802.11 drivers
[    0.478693] Key type dns_resolver registered
[    0.478822] ThumbEE CPU extension supported.
[    0.478855] Registering SWP/SWPB emulation handler
[    0.479523] registered taskstats version 1
[    0.479562] Loading compiled-in X.509 certificates
[    0.519231] stm32-mdma 58000000.dma-controller: STM32 MDMA driver registered
[    0.522591] stm32-dma 48000000.dma-controller: no dma pool: can't use MDMA: 0
[    0.524312] stm32-dma 48000000.dma-controller: STM32 DMA driver registered
[    0.533158] stm_thermal 50028000.thermal: stm_thermal_probe: Driver initialized successfully
[    0.540358] /soc/interrupt-controller@5000d000: bank0
[    0.540416] /soc/interrupt-controller@5000d000: bank1
[    0.540447] /soc/interrupt-controller@5000d000: bank2
[    0.542491] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOA bank added
[    0.543238] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOB bank added
[    0.543954] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOC bank added
[    0.544657] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOD bank added
[    0.545412] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOE bank added
[    0.546143] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOF bank added
[    0.546883] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOG bank added
[    0.547546] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOH bank added
[    0.547627] stm32mp157-pinctrl soc:pinctrl@50002000: Pinctrl STM32 initialized
[    0.548624] stm32mp157-pinctrl soc:pinctrl@54004000: at least one GPIO bank is required
[    0.548659] stm32mp157-pinctrl: probe of soc:pinctrl@54004000 failed with error -22
[    0.550723] LCD_5V: supplied by vin
[    0.551536] wlan-en-regulator: supplied by vin
[    0.555478] stm32-usart 4000f000.serial: interrupt mode for rx (no dma)
[    0.555519] stm32-usart 4000f000.serial: interrupt mode for tx (no dma)
[    0.555558] 4000f000.serial: ttySTM1 at MMIO 0x4000f000 (irq = 49, base_baud = 4000000) is a stm32-usart
[    0.557765] stm32-usart 40010000.serial: interrupt mode for rx (no dma)
[    0.557802] stm32-usart 40010000.serial: interrupt mode for tx (no dma)
[    0.557839] 40010000.serial: ttySTM0 at MMIO 0x40010000 (irq = 50, base_baud = 4000000) is a stm32-usart
[    1.850996] printk: console [ttySTM0] enabled
[    1.857628] stm32-usart 40018000.serial: interrupt mode for rx (no dma)
[    1.863016] stm32-usart 40018000.serial: interrupt mode for tx (no dma)
[    1.869560] 40018000.serial: ttySTM3 at MMIO 0x40018000 (irq = 51, base_baud = 4000000) is a stm32-usart
[    1.881281] stm32-usart 40019000.serial: interrupt mode for rx (no dma)
[    1.886575] stm32-usart 40019000.serial: interrupt mode for tx (no dma)
[    1.893259] 40019000.serial: ttySTM2 at MMIO 0x40019000 (irq = 52, base_baud = 4000000) is a stm32-usart
[    1.909403] stm32-dwmac 5800a000.ethernet: IRQ eth_lpi not found
[    1.914981] stm32-dwmac 5800a000.ethernet: User ID: 0x40, Synopsys ID: 0x42
[    1.921142] stm32-dwmac 5800a000.ethernet:   DWMAC4/5
[    1.926014] stm32-dwmac 5800a000.ethernet: DMA HW capability register supported
[    1.933440] stm32-dwmac 5800a000.ethernet: RX Checksum Offload Engine supported
[    1.940753] stm32-dwmac 5800a000.ethernet: TX Checksum insertion supported
[    1.947636] stm32-dwmac 5800a000.ethernet: Wake-Up On Lan supported
[    1.954085] stm32-dwmac 5800a000.ethernet: TSO supported
[    1.959297] stm32-dwmac 5800a000.ethernet: Enable RX Mitigation via HW Watchdog Timer
[    1.967097] stm32-dwmac 5800a000.ethernet: Enabled L3L4 Flow TC (entries=2)
[    1.974107] stm32-dwmac 5800a000.ethernet: Enabled RFS Flow TC (entries=8)
[    1.981034] stm32-dwmac 5800a000.ethernet: TSO feature enabled
[    1.986911] stm32-dwmac 5800a000.ethernet: Using 32 bits DMA width
[    2.001601] stm32_rtc 5c004000.rtc: registered as rtc0
[    2.005421] stm32_rtc 5c004000.rtc: setting system clock to 2000-01-01T01:17:06 UTC (946689426)
[    2.014794] stm32_rtc 5c004000.rtc: Date/Time must be initialized
[    2.020269] stm32_rtc 5c004000.rtc: registered rev:1.2
[    2.046020] stm32f7-i2c 40015000.i2c: using dma1chan0 (tx) and dma1chan1 (rx) for DMA transfers
[    2.054152] stm32f7-i2c 40015000.i2c: STM32F7 I2C-0 bus adapter
[    2.085185] stpmic1 1-0033: PMIC Chip Version: 0x21
[    2.093814] vddcore: supplied by vin
[    2.099105] vdd_ddr: supplied by vin
[    2.104284] vdd: supplied by vin
[    2.109173] v3v3: supplied by vin
[    2.114111] v1v8_audio: supplied by v3v3
[    2.120927] v3v3_hdmi: supplied by vin
[    2.126920] vtt_ddr: supplied by vdd_ddr
[    2.132354] vdd_usb: supplied by vin
[    2.138151] vdda: supplied by vin
[    2.143677] v1v2_hdmi: supplied by v3v3
[    2.149514] vref_ddr: supplied by vin
[    2.155209] bst_out: supplied by vin
[    2.158236] vbus_otg: supplied by bst_out
[    2.162409] vbus_sw: supplied by bst_out
[    2.171796] hwmon hwmon1: temp1_input not attached to any thermal zone
[    2.178999] rtc-ds3232 1-0068: registered as rtc1
[    2.183240] stm32f7-i2c 5c002000.i2c: STM32F7 I2C-1 bus adapter
[    2.190552] i2c i2c-0: Added multiplexed i2c bus 2
[    2.194038] i2c-mux-gpio i2cmux: 1 port mux on STM32F7 I2C(0x40015000) adapter
[    2.206163] mmci-pl18x 48004000.mmc: mmc0: PL180 manf 53 rev2 at 0x48004000 irq 38,0 (pio)
[    2.407704] mmci-pl18x 58005000.mmc: Got CD GPIO
[    2.412283] mmci-pl18x 58005000.mmc: mmc1: PL180 manf 53 rev2 at 0x58005000 irq 42,0 (pio)
[    2.433028] mmc0: queuing unknown CIS tuple 0x01 [d9 01 ff] (3 bytes)
[    2.445196] mmc0: queuing unknown CIS tuple 0x1a [01 01 00 02 07] (5 bytes)
[    2.448841] mmci-pl18x 58007000.mmc: mmc2: PL180 manf 53 rev2 at 0x58007000 irq 43,0 (pio)
[    2.454003] mmc0: queuing unknown CIS tuple 0x1b [c1 41 30 30 ff ff 32 00] (8 bytes)
[    2.467531] mmc0: queuing unknown CIS tuple 0x14 [] (0 bytes)
[    2.478559] mmc0: new high speed SDIO card at address 0001
[    2.499820] stm32-ipcc 4c001000.mailbox: ipcc rev:1.0 enabled, 6 chans, proc 0
[    2.507352] stm32-rproc 10000000.m4: IRQ index 0 not found
[    2.514121] remoteproc remoteproc0: m4 is available
[    2.520534] rfkill_gpio bt_rfkill: bt_rfkill device registered.
[    2.525980] LCD_VDD: supplied by vdd
[    2.529307] TOUCH_VDD: supplied by vdd
[    2.533575] mmc1: new high speed SDHC card at address 59b4
[    2.535152] stm32-usbphyc 5a006000.usbphyc: registered rev:1.0
[    2.539675] mmcblk1: mmc1:59b4 USDU1 14.9 GiB 
[    2.551901] dwc2 49000000.usb-otg: supply vusb_d not found, using dummy regulator
[    2.558386] dwc2 49000000.usb-otg: supply vusb_a not found, using dummy regulator
[    2.574981]  mmcblk1: p1 p2 p3 p4 p5 p6 p7 p8 p9 p10 p11
[    2.602527] mmc2: new DDR MMC card at address 0001
[    2.607338] mmcblk2: mmc2:0001 W62704 3.53 GiB 
[    2.617614]  mmcblk2: p1 p2 p3 p4 p5 p6 p7 p8 p9
[    2.624137] mmcblk2boot0: mmc2:0001 W62704 2.00 MiB 
[    2.630956] mmcblk2boot1: mmc2:0001 W62704 2.00 MiB 
[    2.637231] mmcblk2rpmb: mmc2:0001 W62704 512 KiB, chardev (240:0)
[    2.706495] dwc2 49000000.usb-otg: EPs: 9, dedicated fifos, 952 entries in SPRAM
[    2.713781] dwc2 49000000.usb-otg: DWC OTG Controller
[    2.717692] dwc2 49000000.usb-otg: new USB bus registered, assigned bus number 1
[    2.725280] dwc2 49000000.usb-otg: irq 74, io mem 0x49000000
[    2.732163] hub 1-0:1.0: USB hub found
[    2.734593] hub 1-0:1.0: 1 port detected
[    2.746472] ehci-platform 5800d000.usb: EHCI Host Controller
[    2.751093] ehci-platform 5800d000.usb: new USB bus registered, assigned bus number 2
[    2.759330] ehci-platform 5800d000.usb: irq 75, io mem 0x5800d000
[    2.789047] ehci-platform 5800d000.usb: USB 2.0 started, EHCI 1.00
[    2.795268] hub 2-0:1.0: USB hub found
[    2.797701] hub 2-0:1.0: 2 ports detected
[    2.803514] ohci-platform 5800c000.usb: Generic Platform OHCI controller
[    2.808862] ohci-platform 5800c000.usb: new USB bus registered, assigned bus number 3
[    2.817306] ohci-platform 5800c000.usb: irq 45, io mem 0x5800c000
[    2.894442] hub 3-0:1.0: USB hub found
[    2.896878] hub 3-0:1.0: 2 ports detected
[    2.904118] input: pmic_onkey as /devices/platform/soc/5c002000.i2c/i2c-1/1-0033/5c002000.i2c:stpmic@33:onkey/input/input0
[    2.919666] [drm] Initialized stm 1.0.0 20170330 for 5a001000.display-controller on minor 0
[    2.967971] Console: switching to colour frame buffer device 100x30
[    2.989844] stm32-display 5a001000.display-controller: [drm] fb0: stmdrmfb frame buffer device
[    3.000691] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[    3.012330] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[    3.017941] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[    3.026262] cfg80211: failed to load regulatory.db
[    3.026718] ALSA device list:
[    3.033989]   No soundcards found.
[    3.084344] EXT4-fs (mmcblk1p10): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.
[    3.093364] VFS: Mounted root (ext4 filesystem) on device 179:10.
[    3.100592] devtmpfs: mounted
[    3.104371] Freeing unused kernel image (initmem) memory: 1024K
[    3.119480] Run /sbin/init as init process
[    3.468579] systemd[1]: System time before build time, advancing clock.
[    3.592388] NET: Registered PF_INET6 protocol family
[    3.638925] Segment Routing with IPv6
[    3.641500] In-situ OAM (IOAM) with IPv6
[    3.703883] systemd[1]: systemd 250.5+ running in system mode (+PAM -AUDIT -SELINUX -APPARMOR +IMA -SMACK -SECCOMP -GCRYPT -GNUTLS -OPENSSL -ACL +BLKID -CURL -ELFUTILS -FIDO2 -IDN2 -IDN +IPTC +KMOD -LIBCRYPTSETUP +LIBFDISK -PCRE2 -PWQUALITY -P11KIT -QRENCODE -BZIP2 -LZ4 -XZ -ZLIB +ZSTD -BPF_FRAMEWORK -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=hybrid)
[    3.735467] systemd[1]: Detected architecture arm.

Welcome to ST OpenSTLinux - Weston - (A Yocto Project Based Distro) 4.0.4-snapshot-20230408 (kirkstone)!

[    3.940815] systemd[1]: Hostname set to <desk-mp1>.
[    3.955676] systemd[1]: Initializing machine ID from random generator.
[    4.039778] systemd[1]: Using hardware watchdog 'Software Watchdog', version 0, device /dev/watchdog0
[    4.047762] systemd[1]: Watchdog running with a timeout of 32s.
[    6.667897] systemd[1]: /lib/systemd/system/mount-partitions.service:9: Standard output type syslog is obsolete, automatically updating to journal. Please update your unit file, and consider removing the setting altogether.
[    6.711705] systemd[1]: Queued start job for default target Multi-User System.
[    6.786390] systemd[1]: Created slice Slice /system/getty.
[  OK  ] Created slice Slice /system/getty.
[    6.823575] systemd[1]: Created slice Slice /system/modprobe.
[  OK  ] Created slice Slice /system/modprobe.
[    6.863561] systemd[1]: Created slice Slice /system/serial-getty.
[  OK  ] Created slice Slice /system/serial-getty.
[    6.902882] systemd[1]: Created slice User and Session Slice.
[  OK  ] Created slice User and Session Slice.
[    6.940153] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[  OK  ] Started Dispatch Password …ts to Console Directory Watch.
[    6.979902] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[  OK  ] Started Forward Password R…uests to Wall Directory Watch.
[    7.020108] systemd[1]: Reached target Path Units.
[  OK  ] Reached target Path Units.
[    7.059486] systemd[1]: Reached target Remote File Systems.
[  OK  ] Reached target Remote File Systems.
[    7.099446] systemd[1]: Reached target Slice Units.
[  OK  ] Reached target Slice Units.
[    7.129490] systemd[1]: Reached target Swaps.
[  OK  ] Reached target Swaps.
[    7.197005] systemd[1]: Listening on RPCbind Server Activation Socket.
[  OK  ] Listening on RPCbind Server Activation Socket.
[    7.239638] systemd[1]: Reached target RPC Port Mapper.
[  OK  ] Reached target RPC Port Mapper.
[    7.280631] systemd[1]: Listening on Syslog Socket.
[  OK  ] Listening on Syslog Socket.
[    7.335740] systemd[1]: Listening on Process Core Dump Socket.
[  OK  ] Listening on Process Core Dump Socket.
[    7.370036] systemd[1]: Listening on initctl Compatibility Named Pipe.
[  OK  ] Listening on initctl Compatibility Named Pipe.
[    7.418278] systemd[1]: Journal Audit Socket was skipped because of a failed condition check (ConditionSecurity=audit).
[    7.429397] systemd[1]: Listening on Journal Socket (/dev/log).
[  OK  ] Listening on Journal Socket (/dev/log).
[    7.470828] systemd[1]: Listening on Journal Socket.
[  OK  ] Listening on Journal Socket.
[    7.511077] systemd[1]: Listening on Network Service Netlink Socket.
[  OK  ] Listening on Network Service Netlink Socket.
[    7.550923] systemd[1]: Listening on udev Control Socket.
[  OK  ] Listening on udev Control Socket.
[    7.590386] systemd[1]: Listening on udev Kernel Socket.
[  OK  ] Listening on udev Kernel Socket.
[    7.630620] systemd[1]: Listening on User Database Manager Socket.
[  OK  ] Listening on User Database Manager Socket.
[    7.670676] systemd[1]: Huge Pages File System was skipped because of a failed condition check (ConditionPathExists=/sys/kernel/mm/hugepages).
[    7.690868] systemd[1]: Mounting POSIX Message Queue File System...
         Mounting POSIX Message Queue File System...
[    7.737488] systemd[1]: Mounting Kernel Debug File System...
         Mounting Kernel Debug File System...
[    7.777328] systemd[1]: Mounting Kernel Trace File System...
         Mounting Kernel Trace File System...
[    7.819519] systemd[1]: Mounting Temporary Directory /tmp...
         Mounting Temporary Directory /tmp...
[    7.870379] systemd[1]: Starting Create List of Static Device Nodes...
         Starting Create List of Static Device Nodes...
[    7.918262] systemd[1]: Starting Load Kernel Module configfs...
         Starting Load Kernel Module configfs...
[    7.958062] systemd[1]: Starting Load Kernel Module drm...
         Starting Load Kernel Module drm...
[    7.998366] systemd[1]: Starting Load Kernel Module fuse...
         Starting Load Kernel Module fuse...
[    8.037947] systemd[1]: Starting Mount partitions...
         Starting Mount partitions...
[    8.085655] systemd[1]: Starting RPC Bind...
         Starting RPC Bind...
[    8.120141] systemd[1]: File System Check on Root Device was skipped because of a failed condition check (ConditionPathIsReadWrite=!/).
[    8.166240] systemd[1]: Starting Journal Service...
         Starting Journal Service...
[    8.195070] systemd[1]: Load Kernel Modules was skipped because all trigger condition checks failed.
[    8.230714] systemd[1]: Mounting NFSD configuration filesystem...
         Mounting NFSD configuration filesystem...
[    8.280113] systemd[1]: Starting Generate network units from Kernel command line...
         Starting Generate network …ts from Kernel command line...
[    8.353043] systemd[1]: Starting Remount Root and Kernel File Systems...
         Starting Remount Root and Kernel File Systems...
[    8.409068] systemd[1]: Starting Apply Kernel Variables...
         Starting Apply Kernel Variables...
[    8.475944] EXT4-fs (mmcblk1p10): re-mounted. Opts: (null). Quota mode: disabled.
[    8.503216] systemd[1]: Starting Coldplug All udev Devices...
         Starting Coldplug All udev Devices...
[    8.598444] systemd[1]: Started RPC Bind.
[  OK  ] Started RPC Bind.
[    8.631033] systemd[1]: Mounted POSIX Message Queue File System.
[  OK  ] Mounted POSIX Message Queue File System.
[    8.650885] systemd[1]: Mounted Kernel Debug File System.
[  OK  ] Mounted Kernel Debug File System.
[    8.691132] systemd[1]: Mounted Kernel Trace File System.
[  OK  ] Mounted Kernel Trace File System.
[    8.730449] systemd[1]: Mounted Temporary Directory /tmp.
[  OK  ] Mounted Temporary Directory /tmp.
[    8.773325] systemd[1]: Finished Create List of Static Device Nodes.
[  OK  ] Finished Create List of Static Device Nodes.
[    8.792296] systemd[1]: modprobe@configfs.service: Deactivated successfully.
[    8.812024] EXT4-fs (mmcblk1p8): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.
[    8.821503] systemd[1]: Finished Load Kernel Module configfs.
[  OK  ] Finished Load Kernel Module configfs.
[    8.840643] systemd[1]: Started Journal Service.
[  OK  ] Started Journal Service.
[  OK  ] Finished Load Kernel Module drm.
[  OK  ] Finished Load Kernel Module fuse.
[FAILED] Failed to mount NFSD configuration filesystem.
See 'systemctl status proc-fs-nfsd.mount' for details.
[DEPEND] Dependency failed for NFS server and services.
[DEPEND] Dependency failed for NFS Mount Daemon.
[  OK  ] Finished Generate network units from Kernel command line.
[  OK  ] Finished Remount Root and Kernel File Systems.
[  OK  ] Finished Apply Kernel Variables.
         Mounting FUSE Control File System...
         Mounting Kernel Configuration File System...
[  OK  ] Started Starts Psplash Boot screen.
[    9.369825] EXT4-fs (mmcblk1p9): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.
         Starting Flush Journal to Persistent Storage...
         Starting Create[    9.498091] systemd-journald[603]: Received client request to flush runtime journal.
 System Users...
[  OK  ] Mounted FUSE Control File System.
[  OK  ] Mounted Kernel Configuration File System.
[  OK  ] Finished Flush Journal to Persistent Storage.
[  OK  ] Finished Create System Users.
         Starting Create Static Device Nodes in /dev...
[    9.856101] EXT4-fs (mmcblk1p11): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.
[  OK  ] Finished Mount partitions.
[  OK  ] Finished Create Static Device Nodes in /dev.
[  OK  ] Reached target Preparation for Local File Systems.
         Mounting /var/volatile...
         Starting Resize root files…to fit available disk space...
         Starting Rule-based Manage…for Device Events and Files...
[  OK  ] Mounted /var/volatile.
         Starting Load/Save Random Seed...
[  OK  ] Started Rule-based Manager for Device Events and Files.
[  OK  ] Finished Coldplug All udev Devices.
         Starting Wait for udev To …plete Device Initialization...
[  OK  ] Created slice Slice /system/systemd-backlight.
         Starting Load/Save Screen …ness of backlight:backlight...
[  OK  ] Finished Load/Save Screen …htness of backlight:backlight.
[   12.162114] wlan: loading out-of-tree module taints kernel.
[   12.302130] Galcore version 6.4.9.436021
[   13.465162] using random self ethernet address
[   13.468256] using random host ethernet address
[   13.812041] usb0: HOST MAC 5c:c0:78:d3:5c:60
[   13.814935] usb0: MAC 86:80:fd:a1:db:63
[   13.854235] dwc2 49000000.usb-otg: bound driver configfs-gadget
[   13.859057] random: crng init done
[  OK  ] Finished Load/Save Random Seed.
[   14.038386] dwc2 49000000.usb-otg: new device is high-speed
[   14.072449] dwc2 49000000.usb-otg: new address 39
[   14.126410] wlan: loading driver v4.5.25.46
[   14.162882] hifDeviceInserted: Dumping clocks (50000000,99000000)
[   14.412522] [TELIT] Using WE866C6 board data. 
[   14.524974] ol_download_firmware: chip_id:0x5020001 board_id:0x0
[   14.553604] __ol_transfer_bin_file: Failed to get bdwlan30_c6.b00:-2
[   14.558611] __ol_transfer_bin_file: Trying to load default bdwlan30_c6.bin
[   14.646945] __ol_transfer_bin_file: Loading setup file qsetup30.bin
[   14.663241] __ol_transfer_bin_file: Failed to get qsetup30.bin:-2
[   14.819133] IPv6: ADDRCONF(NETDEV_CHANGE): usb0: link becomes ready
[   15.373085] R0: wlan: [751:E :SAP] dfs_init_radar_filters[217]: Unknown dfs domain 0 
[   15.576912] Host SW:4.5.25.46, FW:0.0.0.111, HW:QCA93x7_REV1_1
[   15.598824] ENTER sme_set_btc_coex_dutycycle = 30
[   15.598862] ENTER sme_set_btc_coex_dutycycle =30
[   15.607920] ath_hif_sdio: HIF (Atheros/multi-bss)
[   15.617314] wlan: driver loaded in 1490000
[  OK  ] Finished Wait for udev To Complete Device Initialization.
[  OK  ] Reached target Hardware activated USB gadget.
[   16.363425] EXT4-fs (mmcblk1p10): resizing filesystem from 264203 to 1048576 blocks
[  OK  ] Listening on Load/Save RF …itch Status /dev/rfkill Watch.
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.
[  *** ] A start job is running for Resize r…ilable disk space (22s / no limit)
[   ***] A start job is running for Resize r…ilable disk space (23s / no limit)
[   29.912763] EXT4-fs (mmcblk1p8): resizing filesystem from 65536 to 65536 blocks
[   29.941441] EXT4-fs (mmcblk1p9): resizing filesystem from 16384 to 16384 blocks
[  *** ] A start job is running for Resize r…ilable disk space (25s / no limit)
[    **] A start job is running for Resize r…ilable disk space (32s / no limit)
[***   ] A start job is running for Resize r…ilable disk space (44s / no limit)
[   ***] A start job is running for Resize r…ilable disk space (54s / no limit)
[ ***  ] A start job is running for Resize r…le disk space (1min 9s / no limit)
[   ***] A start job is running for Resize r…e disk space (1min 22s / no limit)
[    **] A start job is running for Resize r…e disk space (1min 35s / no limit)
[*     ] A start job is running for Resize r…e disk space (1min 46s / no limit)
[    **] A start job is running for Resize r…e disk space (1min 56s / no limit)
[**    ] A start job is running for Resize r…le disk space (2min 7s / no limit)
[ ***  ] A start job is running for Resize r…e disk space (2min 19s / no limit)
[    **] A start job is running for Resize r…e disk space (2min 32s / no limit)
[   ***] A start job is running for Resize r…e disk space (2min 44s / no limit)
[**    ] A start job is running for Resize r…e disk space (2min 56s / no limit)
[**    ] A start job is running for Resize r…le disk space (3min 9s / no limit)
[  *** ] A start job is running for Resize r…e disk space (3min 18s / no limit)
[  OK  ] Finished Resize root files…m to fit available disk space.
[  OK  ] Reached target Local File Systems.
         Starting Rebuild Dynamic Linker Cache...
         Starting Create Volatile Files and Directories...
[  OK  ] Finished Create Volatile Files and Directories.
[  OK  ] Started Hardware RNG Entropy Gatherer Daemon.
         Starting Rebuild Journal Catalog...
         Starting Network Time Synchronization...
         Starting Record System Boot/Shutdown in UTMP...
[  OK  ] Finished Record System Boot/Shutdown in UTMP.
[  OK  ] Finished Rebuild Journal Catalog.
[  OK  ] Started Network Time Synchronization.
[  OK  ] Reached target System Time Set.
[  OK  ] Finished Rebuild Dynamic Linker Cache.
         Starting Update is Completed...
[  OK  ] Finished Update is Completed.
[  OK  ] Reached target System Initialization.
[  OK  ] Started Daily rotation of log files.
[  OK  ] Started Daily Cleanup of Temporary Directories.
[  OK  ] Reached target Timer Units.
[  OK  ] Listening on Avahi mDNS/DNS-SD Stack Activation Socket.
[  OK  ] Listening on D-Bus System Message Bus Socket.
[  OK  ] Listening on dropbear.socket.
[  OK  ] Reached target Socket Units.
[  OK  ] Reached target Basic System.
[  OK  ] Started Job spooling tools.
[  OK  ] Started Periodic Command Scheduler.
         Starting D-Bus System Message Bus...
         Starting IPv6 Packet Filtering Framework...
         Starting IPv4 Packet Filtering Framework...
         Starting Hold until boot process finishes up...
[  OK  ] Started System Logging Service.
         Starting Resets System Activity Logs...
         Starting User Login Management...
[  OK  ] Started D-Bus System Message Bus.
[  OK  ] Finished IPv6 Packet Filtering Framework.
[  OK  ] Finished IPv4 Packet Filtering Framework.
[  OK  ] Finished Hold until boot process finishes up.
[  OK  ] Finished Resets System Activity Logs.
[  OK  ] Reached target Preparation for Network.
         Starting Network Configuration...
         Starting Check if the gpu …orrect weston configuration...
[  OK  ] Started User Login Management.
         Starting Userfs cleanup package...
[  OK  ] Finished Check if the gpu … correct weston configuration.
[  OK  ] Finished Userfs cleanup package.
[  OK  ] Started Network Configuration.
         Starting Network Name Resolution...
[  OK  ] Started Network Name Resolution.
[  OK  ] Reached target Network.
[  OK  ] Reached target Host and Network Name Lookups.
         Starting Avahi mDNS/DNS-SD Stack...
[  OK  ] Started IIO Daemon.
         Starting Real time performance monitoring...
[  OK  ] Started NFS status monitor for NFSv2/3 locking..
[  OK  ] Started Respond to IPv6 Node Information Queries.
[  OK  ] Started Network Router Discovery Daemon.
         Starting Permit User Sessions...
         Starting Target Communication Framework agent...
[  OK  ] Started Xinetd A Powerful Replacement For Inetd.
[  OK  ] Finished Permit User Sessions.
[  OK  ] Started Target Communication Framework agent.
[  OK  ] Started Real time performance monitoring.
[  OK  ] Started Avahi mDNS/DNS-SD Stack.
[  OK  ] Started Getty on tty1.
[  OK  ] Started Serial Getty on ttySTM0.
[  OK  ] Reached target Login Prompts.
[  OK  ] Started Weston, a Wayland …mpositor, as a system service.
[  OK  ] Reached target Multi-User System.
         Starting Record Runlevel Change in UTMP...
         Starting User Database Manager...
[  OK  ] Finished Record Runlevel Change in UTMP.
[  OK  ] Started User Database Manager.

ST OpenSTLinux - Weston - (A Yocto Project Based Distro) 4.0.4-snapshot desk-mp1 ttySTM0

desk-mp1 login: root (automatic login)

alias: gawkpath_default not found
alias: gawkpath_prepend not found
alias: gawkpath_append not found
alias: gawklibpath_default not found
alias: gawklibpath_prepend not found
alias: gawklibpath_append not found
root@desk-mp1:~#

Hello word example[edit | edit source]

Here below an example on C code displaying the classic Hello World! message on the target serial console.

This example shows how to use the arm cross-compiler using the environment configured for this purpose

Setting the cross-compiler[edit | edit source]

start the Linux development VM and login into the system
open a terminal window and cd into your source code directory

dvdk@vagrant:~$ mkdir myproject
dvdk@vagrant:~$ cd myproject/
dvdk@vagrant:~/myproject$ vi hello.c
dvdk@vagrant:~/myproject$ cat hello.c
#include <stdio.h>

int main(){
	printf("Hello, World!\n");
	return 0;
}

configure the build environment

dvdk@vagrant:~/myproject$ source /home/dvdk/desk-mp1-l/desk-mp1-l-1.0.1_env.sh

as you can see here below, the $CC environment variable has been properly configured for using the SDK sysroot parameter:

dvdk@vagrant:~/myproject$ echo $CC
arm-ostl-linux-gnueabi-gcc -mthumb -mfpu=neon-vfpv4 -mfloat-abi=hard -mcpu=cortex-a7 --sysroot=/opt/yocto/sdk/desk-mp1-l/desk-mp1-l-1.0.1/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi
dvdk@vagrant:~/myproject$

invoke the cross-compiler for compiling your source code example: the object file obtained, is a proper ELF 32-bit for the target microprocessor

dvdk@vagrant:~/myproject$ $CC hello.c -o hello
dvdk@vagrant:~/myproject$ file hello
hello: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, BuildID[sha1]=70fc28d38cfb763980920bd9c16765823ed4b087, for GNU/Linux 3.2.0, with debug_in
dvdk@vagrant:~/myproject$

Running the example on the target[edit | edit source]

Now it is enough to copy the object file in the /home/root rfs directory and boot from nfs...

dvdk@vagrant:~/myproject$ sudo cp hello /home/dvdk/desk-mp1-l/rfs/desk-mp1-l/home/root/
dvdk@vagrant:~/myproject$ sudo ls -la /home/dvdk/desk-mp1-l/rfs/desk-mp1-l/home/root/
total 28
drwx------ 2 root root  4096 Aug  1 08:21 .
drwxr-xr-x 4 root root  4096 Sep 20  2022 ..
-rwxr-xr-x 1 root root 11980 Aug  1 08:21 hello
-rw-r--r-- 1 root root   959 Sep 20  2022 .profile
-rw-r--r-- 1 root root   238 Sep 20  2022 README-CHECK-GPU
dvdk@vagrant:~/myproject$

on the target:

root@desk-mp1:~# ls -la
total 32
drwx------ 2 root root  4096 Aug  1  2023 .
drwxr-xr-x 4 root root  4096 Sep 20  2022 ..
-rw------- 1 root root    13 Aug  1  2023 .ash_history
-rw-r--r-- 1 root root   959 Sep 20  2022 .profile
-rw-r--r-- 1 root root   238 Sep 20  2022 README-CHECK-GPU
-rwxr-xr-x 1 root root 11980 Aug  1  2023 hello
root@desk-mp1:~# ./hello 
Hello, World!
root@desk-mp1:~#

Asymmetric Multiprocessing (AMP) with OpenAMP[edit | edit source]

As known, the STM32MP115x SoC is powered by a heterogeneous architecture comprising a single/dual ARM Cortex-A7 (CA7) and an ARM Cortex-M4 (CM4). When the application requires implementing an Asymmetric Multiprocessing configuration (AMP), the most common scenario is to use Linux on the CA7, and bare metal or RTOS-based firmware on the CM4. In either case, the OpenAMP framework is typically used to establish a communication channel between the cores. The Yocto build system at the heart of the DESK-MP1-L provides some examples based on OpenAMP to demonstrate how to set up AMP configurations. The following section illustrates one of them, namely OpenAMP_TTY_echo. This example is built when Yocto is run to generate the Linux root file system for the target.

For more details, please see the STM32CubeMP1 firmware documentation and the associated source code.

Running the OpenAMP_TTY_echo example[edit | edit source]

The example is automatically built by Yocto. To run it, please issue the following commands on the target's Linux console:

root@desk-mp1:~# cp /usr/local/Cube-M4-examples/STM32MP157C-DK2/Applications/OpenAMP/OpenAMP_TTY_echo/lib/firmware/OpenAMP_TTY_echo.elf /lib/firmware/
root@desk-mp1:~# echo -n OpenAMP_TTY_echo.elf  > /sys/class/remoteproc/remoteproc0/firmware
root@desk-mp1:~# echo start >/sys/class/remoteproc/remoteproc0/state
root@desk-mp1:~# dmesg | tail -n 8
[   69.935241] remoteproc remoteproc0: powering up m4
[   69.940260] remoteproc remoteproc0: Booting fw image OpenAMP_TTY_echo.elf, size 219192
[   69.947843]  remoteproc0#vdev0buffer: assigned reserved memory node vdev0buffer@10042000
[   69.957458] virtio_rpmsg_bus virtio0: creating channel rpmsg-tty addr 0x400
[   69.964031] virtio_rpmsg_bus virtio0: rpmsg host is online
[   69.968816]  remoteproc0#vdev0buffer: registered virtio0 (type 7)
[   69.976364] remoteproc remoteproc0: remote processor m4 is now up
[   69.981515] virtio_rpmsg_bus virtio0: creating channel rpmsg-tty addr 0x401
root@desk-mp1:~# stty -onlcr -echo -F /dev/ttyRPMSG0
root@desk-mp1:~# cat /dev/ttyRPMSG0 &
root@desk-mp1:~# echo "Hello Virtual UART0" > /dev/ttyRPMSG0
Hello Virtual UART0
root@desk-mp1:~# cat /sys/class/remoteproc/remoteproc0/state
running

To stop the demo:

root@desk-mp1:~# echo stop > /sys/class/remoteproc/remoteproc0/state
[  104.989459] remoteproc remoteproc0: warning: remote FW shutdown without ack
[1]+  Done                       cat /dev/ttyRPMSG0
root@desk-mp1:~# cat /sys/class/remoteproc/remoteproc0/state
offline
root@desk-mp1:~#

It is worth remembering that it is also possible to start the CM4 firmware before the Linux kernel is started.

Deployment[edit | edit source]

Customizing the splash screen[edit | edit source]

The following U-Boot environment variables are required for the splash image display when u-boot starts:

splashimage: RAM address where the BMP image is loaded. Please note that it must be a 32-bit (eg: 0xc4100000)
splashfile: image name to load and then display at boot. (eg: splash_landscape.bmp)

U-Boot variables example[edit | edit source]

splashimage=0xc4100000
splashfile=splash_landscape.bmp

How to update splashscreen image[edit | edit source]

As an example, you can update the splash image with the following steps:

connect the uSD to the host
mount the boot partition (eg: sudo mount /dev/sdb8 /mnt)
copy on /mnt partition the image with this name: splash_landscape.bmp
umount the uSD and excecute the boot

How to configure the network interfaces[edit | edit source]

For deploying an Embedded System, one of the most important configuration is the Network Interface configuration.

Once the Embedded Device is finally configured for stand-alone bootstrap, the network interface should be configured for reaching the device remotely via network connections like ssh, telnet, ftp, http, etc.

This Application Note briefly describes how it is possible to simply configure the network interfaces on systemd

Resources[edit | edit source]

For further details on network configuration, please refer - for example - to:

Examples[edit | edit source]

The following configuration assumptions are used in the paragraphs shown below:

IP address range of the LAN network 192.168.1.0 - 192.168.1.255
IP address of the gateway 192.168.1.254
IP address of the device 192.168.1.100

systemd[edit | edit source]

The network configuration for systemd are basically found in the /etc/systemd/network/ directory.

The most simply way for configuring the network interface is to create/edit the file /etc/systemd/network/1-eth0.network as per the following paragraphs. In the event that there are another network interface, then this must be create/edit as /etc/systemd/network/1-eth0.network.

Static IP address[edit | edit source]

Here below, an example for configuring eth0 ethernet interface.

[Match]
Name=eth0

# Prevent the interface loading if the kernel boots from nfs
KernelCommandLine=!nfsroot

[Network]
Address=192.168.1.100
Gateway=192.168.1.254
DNS=192.168.1.1

Once modified, the networkd service should be resarted:

systemctl restart systemd-networkd

Dynamic IP addres (DHCP)[edit | edit source]

The network interface can be configured - using a proper DHCP server on the network - using the DHCP key in the configuration file as the following:

[Match]
Name=eth0

# Prevent the interface loading if the kernel boots from nfs
KernelCommandLine=!nfsroot

[Network]
DHCP=yes

When systemd network starts, it tries to use a DHCP server present in the network to configure the interface.

DNS[edit | edit source]

The DNS key (in the configuration file) is used only if the systemd-resolved service is enabled and the /etc/resolv.conf has a symbolic link to /run/systemd/resolve/stub-resolv.conf

ln -sf /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf

Once modified, the resolved service should be resarted:

systemctl restart systemd-resolved

loopback network interface[edit | edit source]

systemd contains native implementations of various tasks that need to be executed as part of the boot process.

For example, it sets the hostname or configures the loopback network device.

Apply configuration changes[edit | edit source]

After editing the above files, changes are applied after reboot or by restarting systemd-networkd.service:

root@desk-mp1:~# systemctl restart systemd-networkd.service

MAC Address programming[edit | edit source]

Every network adapter has a Media Access Control address (usually shortened to MAC address). A MAC address is a six-byte identifying number permanently embedded in the firmware of the adapter, and is readable by the network and the operating system of the device on which the adapter is installed.

The address must follow the standards set by the Institute of Electrical and Electronics Engineers (IEEE), which sets computer networking standards.

The MAC address is a six-pair set of hexadecimal numbers, for example a1-c2-e3-44-5f-6d. Specifically, in Ethernet, the MAC address is known as the Ethernet Address, which is the unique ID serial number of the Ethernet device in one's computer. MAC Addresses are used in a Local Area Network (LAN) by computers to communicate with each other. Every adapter has a unique MAC address.

Platform supported[edit | edit source]

In this Application Note, we will describe how to use the ETRA eFuse for programming and using the MAC address(es) and it applies to the following DAVE ETRA family products:

ETRA

This Application Note has been validated in the ETRA SOM.

Obtaining a MAC address[edit | edit source]

To obtain a MAC address for your organization, please refer to our Setting the MAC address wiki page with the overall information about this topic.

Permanent storage areas[edit | edit source]

Some SOCs provide programmable OTPs for security, MAC address, boot modes, etc. Usually, some of these are general-purpose registers and can be managed by the user.

In other cases, an external permanent storage device can be used for storing permanent settings like the MAC address: for the ETRA product family, DAVE proposes to use the General Purposes eFuses (OTP blocks) on SoC itself for storing permanently the MAC address(es).

MAC address programming on ETRA family[edit | edit source]

MAC address configuration in u-boot[edit | edit source]

If the MAC address is not already programmed in the OTPs and the ethaddr u-boot variable is not set, u-boot assignes a random value (different at every power on cycle):

Net:
Warning: ethernet@5800a000 (eth0) using random MAC address - d6:39:06:41:0f:b2
eth0: ethernet@5800a000

If the ethaddr is set and saved in the u-boot environment, its value is used as the MAC Address:

u-boot=> setenv ethaddr 00:50:c2:1e:af:a8
u-boot=> saveenv
Saving Environment to MMC... Writing to MMC(0)... OK
u-boot=>

eFuse bank registers[edit | edit source]

ETRA family uses the Bank0 Word 57, Word 58 for storing the MAC address. The MAC values should be properly divided in two registers for correct programming.

The related 57, 58, OTP registers will be used for the purposes illustrated in this AN.

Warning!! eFuse programming is a permanent and non-reversible action. Pay attention to the values and commands used during MAC programming.

eth0 read current value[edit | edit source]

U-boot uses the fuse sense command to read the MAC address value into the eFuse

STM32MP> fuse sense 0 57 2
Sensing bank 0:
Word 0x00000039: 00000000 00000000

If it is all zero there should also be the following print from U-Boot invalid MAC address 0 in OTP 00:00:00:00:00:00.

If the present MAC address is not valid, a random one is generated.

To check if the OTPs have been blocked execute use the fuse sense command, the address to use is calculated as follows:

OTP 57 (decimal) -> 0x39 (Hex) as shown by the output of the previous command (Word 0x00000039: XXXXXXXX YYYYYYYY), add on address this value 0x10000000 -> 0x10000039

STM32MP> fuse sense 0 0x10000039 2
Sensing bank 0:
Word 0x10000039: 00000000 00000000

If the value is 0 in both cells, they have not been locked.

If the value is 40000000 the cell has been locked.

eth0 eFuse programming[edit | edit source]

U-Boot uses the fuse prog command for writing the MAC address into the eFuse. The MAC address should be divided in two parts, for example MAC address AB:CD:12:34:56:78 for eth0 is then divided into :

fuse prog 0 57 0x12cd34ab
fuse prog 0 58 0x00007856

In the following example the MAC address 2A:01:7A:9F:3E:20 is stored in the SOC:

(in case of presence) clear the ethaddr u-boot variable

u-boot=> setenv ethaddr
u-boot=> saveenv
Saving Environment to MMC... Writing to MMC(1)... OK

program the MAC address in the OPTs with the following commands:

STM32MP> fuse prog 0 57 0x9f7a012a 0x0000203e
Programming bank 0 word 0x00000039 to 0x9f7a012a...
Warning: Programming fuses is an irreversible operation!
         This may brick your system.
         Use this command only if you are sure of what you are doing!

Really perform this fuse programming? <y/N>
y
Programming bank 0 word 0x0000003a to 0x0000203e...
Warning: Programming fuses is an irreversible operation!
         This may brick your system.
         Use this command only if you are sure of what you are doing!

Really perform this fuse programming? <y/N>
y
STM32MP>

If you want to write the eFuse value directly without confirmation, uses the -y parameter with the fuse prog command, as per the previous example:

STM32MP> fuse prog -y 0 57 0x9f7a012a 0x0000203e
Programming bank 0 word 0x00000039 to 0x9f7a012a...
Programming bank 0 word 0x0000003a to 0x0000203e...

At the next boot, the ethaddr value wil be read from the OPTs:

STM32MP> pri ethaddr
ethaddr=2a:01:7a:9f:3e:20
STM32MP>

eFuse locking[edit | edit source]

The OTP eFuse registers should be locked in order to avoid unwanted registers (and then MAC addresses) modifications. OTP lock grants the MAC values cannot be modified anymore.

If not locked yet, OTP bits can be set to '1' but not reversed to '0' value, so some modifications can be applied if the eFuse registers are not locked.

The registers lock can be forced using the following command:

STM32MP> fuse prog 0 0x10000039 0x40000000 0x40000000
STM32MP> fuse sense 0 0x10000039 2
Sensing bank 0:
Word 0x10000039: 40000000 40000000
STM32MP>

eFuse reading[edit | edit source]

The eFuse registers can be read - after programming - for checking the written values:

STM32MP> fuse sense 0 57 2
Sensing bank 0:
Word 0x00000039: 9f7a012a 0000203e
STM32MP>

Linux kernel MAC address[edit | edit source]

The MAC Address configured in u-boot is passed to the kernel which configures the eth0 peripherals with the correct values:

root@desk-mp1:~# ifconfig eth0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.89  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::2801:7aff:fe9f:3e20  prefixlen 64  scopeid 0x20<link>
        ether 2a:01:7a:9f:3e:20  txqueuelen 1000  (Ethernet)
        RX packets 199  bytes 19957 (19.4 KiB)
        RX errors 0  dropped 5  overruns 0  frame 0
        TX packets 58  bytes 7816 (7.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 44  base 0xa000

root@desk-mp1:~#

Management of prebuilt packages[edit | edit source]

During the development of custom applications, developers generally realize that they need to add libraries and other software packages to the root file systems to make their code run properly. If these packages are prebuilt, developers can install them onto the root file system very easily. By configuring the target as described in this document, they achieve a user experience similar to the one you have with a desktop Linux distro such as Ubuntu. DESK-MP1-L uses by default the deb package format. As such, apt commands can be used for package management. Prebuilt packages are provided by this repository that DAVE Embedded Systems makes available for its customers.

apt-get[edit | edit source]

The following instructions detail how to use apt-get for installing packages with Yocto repositories created by DAVE's build system for DESK-MP1-L.

Configuring `apt`[edit | edit source]

Edit the file /etc/apt/apt.conf like this:

root@desk-mp1:~# cat /etc/apt/apt.conf
APT::Architecture "armhf";
APT::Get::AllowUnauthenticated "true";
Acquire::Languages "none";

Edit the file /etc/apt/sources.list.d/debian-10.list like this:

root@desk-mp1:~# cat /etc/apt/sources.list.d/debian-10.list
deb [trusted=yes] http://yocto.dave.eu/desk-mp1-l-1.0.1/ all/
deb [trusted=yes] http://yocto.dave.eu/desk-mp1-l-1.0.1/ cortexa7t2hf-neon-vfpv4/
deb [trusted=yes] http://yocto.dave.eu/desk-mp1-l-1.0.1/ desk_mp1/

Execute the following commands in order to re-create the apt cache based on the new server's list:

rm -rf /var/lib/apt/lists/*
apt-get clean
apt-get update

root@desk-mp1:~# rm -rf /var/lib/apt/lists/*
root@desk-mp1:~# apt-get clean
root@desk-mp1:~# apt-get update

The software package is provided AS IS, and by downloading it, you agree to be bound to the terms of the software license agreement (SLA).
The detailed content licenses can be found at https://wiki.st.com/stm32mpu/wiki/OpenSTLinux_licenses.

Ign:1 http://yocto.dave.eu/desk-mp1-l-1.0.1 all/ InRelease
Ign:2 http://yocto.dave.eu/desk-mp1-l-1.0.1 cortexa7t2hf-neon-vfpv4/ InRelease
Ign:3 http://yocto.dave.eu/desk-mp1-l-1.0.1 desk_mp1/ InRelease
Get:4 http://yocto.dave.eu/desk-mp1-l-1.0.1 all/ Release [1215 B]
Get:5 http://packages.openstlinux.st.com/4.1 kirkstone InRelease [3459 B]
Get:6 http://yocto.dave.eu/desk-mp1-l-1.0.1 cortexa7t2hf-neon-vfpv4/ Release [1235 B]
Get:7 http://yocto.dave.eu/desk-mp1-l-1.0.1 desk_mp1/ Release [1220 B]
Ign:8 http://yocto.dave.eu/desk-mp1-l-1.0.1 all/ Release.gpg
Ign:9 http://yocto.dave.eu/desk-mp1-l-1.0.1 cortexa7t2hf-neon-vfpv4/ Release.gpg
Ign:10 http://yocto.dave.eu/desk-mp1-l-1.0.1 desk_mp1/ Release.gpg
Get:11 http://yocto.dave.eu/desk-mp1-l-1.0.1 all/ Packages [158 kB]
Get:12 http://yocto.dave.eu/desk-mp1-l-1.0.1 cortexa7t2hf-neon-vfpv4/ Packages [4123 kB]
Get:13 http://packages.openstlinux.st.com/4.1 kirkstone/untested armhf Packages [1251 kB]
Get:14 http://yocto.dave.eu/desk-mp1-l-1.0.1 desk_mp1/ Packages [238 kB]
Get:15 http://packages.openstlinux.st.com/4.1 kirkstone/updates armhf Packages [30.9 kB]
Get:16 http://packages.openstlinux.st.com/4.1 kirkstone/main armhf Packages [684 kB]
Fetched 6492 kB in 9s (716 kB/s)
Reading package lists... Done
W: Conflicting distribution: http://yocto.dave.eu/desk-mp1-l-1.0.1 all/ Release (expected all/ but got )
W: Conflicting distribution: http://yocto.dave.eu/desk-mp1-l-1.0.1 cortexa7t2hf-neon-vfpv4/ Release (expected cortexa7t2hf-neon-vfpv4/ but got )
W: Conflicting distribution: http://yocto.dave.eu/desk-mp1-l-1.0.1 desk_mp1/ Release (expected desk_mp1/ but got )

Then, modify the cached package list due to the proper DAVE's server configuration:

sed -i 's/\.\//cortexa7t2hf-neon-vfpv4\//g' /var/lib/apt/lists/yocto.dave.eu_desk-mp1-l-1.0.1_cortexa7t2hf-neon-vfpv4_Packages
sed -i 's/\.\//all\//g' /var/lib/apt/lists/yocto.dave.eu_desk-mp1-l-1.0.1_all_Packages
sed -i 's/\.\//desk%5fmp1\//g' /var/lib/apt/lists/yocto.dave.eu_desk-mp1-l-1.0.1_desk%5fmp1_Packages

Installing packages on target[edit | edit source]

We assume that network interface has been already configured for Internet access. In any case, a simple network configuration can be done according to the How to configure the network interfaces wiki page.

The target is finally ready to install new packages. The following example shows for instance the installation of graphviz:

root@desk-mp1:~# apt-get install graphviz
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following NEW packages will be installed:
  graphviz
0 upgraded, 1 newly installed, 0 to remove and 10 not upgraded.
Need to get 2007 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://yocto.dave.eu/desk-mp1-l-1.0.1 cortexa7t2hf-neon-vfpv4/ graphviz 2.50.0-r0.0 [2007 kB]
Fetched 2007 kB in 1s (2522 kB/s)

The software package is provided AS IS, and by downloading it, you agree to be bound to the terms of the software license agreement (SLA).
The detailed content licenses can be found at https://wiki.st.com/stm32mpu/wiki/OpenSTLinux_licenses.

Selecting previously unselected package graphviz.
(Reading database ... 28119 files and directories currently installed.)
Preparing to unpack .../graphviz_2.50.0-r0.0_armhf.deb ...
Unpacking graphviz (2.50.0-r0.0) ...
Setting up graphviz (2.50.0-r0.0) ...

Other useful apt commands[edit | edit source]

List of configured software repositories[edit | edit source]

As shown before, the target is configured for accessing the Yocto repositories as listed in the /etc/apt/sources.list.d apt configuration directory:

root@desk-mp1:~# cat /etc/apt/sources.list.d/debian-10.list
deb [trusted=yes] http://yocto.dave.eu/desk-mp1-l-1.0.1/ all/
deb [trusted=yes] http://yocto.dave.eu/desk-mp1-l-1.0.1/ cortexa7t2hf-neon-vfpv4/
deb [trusted=yes] http://yocto.dave.eu/desk-mp1-l-1.0.1/ desk_mp1/

Search for packages[edit | edit source]

To search for an available package into the current configured channels use apt-cache search

Please note that this will show all packages, it's usually more useful to grep for a pattern, e.g.:

root@desk-mp1:~# apt-cache search vim
u-boot-tools-mkenvimage - U-Boot bootloader tools
vim-common - Vi IMproved - enhanced vi editor
vim-dev - Vi IMproved - enhanced vi editor - Development files
vim-doc - Vi IMproved - enhanced vi editor - Documentation files
vim-help - Vi IMproved - enhanced vi editor
vim-src - Vi IMproved - enhanced vi editor - Source files
vim-syntax - Vi IMproved - enhanced vi editor
vim-tiny-dev - Vi IMproved - enhanced vi editor  (with tiny features) - Development files
vim-tiny-src - Vi IMproved - enhanced vi editor  (with tiny features) - Source files
vim-tiny - Vi IMproved - enhanced vi editor  (with tiny features)
vim-tools - Vi IMproved - enhanced vi editor
vim-tutor - Vi IMproved - enhanced vi editor
vim-vimrc - Vi IMproved - enhanced vi editor
vim - Vi IMproved - enhanced vi editor

List of installed packages[edit | edit source]

User can see the list of installed packages with dpkg --get-selections | sed 's:install$::' (sed removes the install string from the output list)

acl
adwaita-icon-theme-symbolic
alsa-conf
alsa-plugins
alsa-plugins-pulseaudio-conf
alsa-state
alsa-state-stm32mp1
alsa-states
alsa-topology-conf
alsa-ucm-conf
...
[snip]
...
weston-init
wget
wireless-regdb-static
wpa-supplicant
wpa-supplicant-cli
wpa-supplicant-passphrase
xinetd
xkeyboard-config
xxhash
xz

Peripherals[edit | edit source]

Peripheral Ethernet[edit | edit source]

Device tree configuration[edit | edit source]

Here below an example of device tree configuration used on Kernel Linux:

From stm32mp157a-dcsb5000dd1r.dts:

&ethernet0{
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&eth1_pins_mx>;
	pinctrl-1 = <&eth1_sleep_pins_mx>;
	status = "okay";

	/* USER CODE BEGIN ethernet0 */
	phy-mode = "rmii";
	max-speed = <100>;
	phy-handle = <&phy0>;
	nvmem-cells = <&ethernet_mac_address>;
	nvmem-cell-names = "mac-address";

	mdio0 {
		#address-cells = <1>;
		#size-cells = <0>;
		compatible = "snps,dwmac-mdio";
		phy0: ethernet-phy@0 {
			compatible = "ethernet-phy-ieee802.3-c22";
			reg = <0>;
		};
	};
	/* USER CODE END ethernet0 */
};
...
...
&pinctrl {
...
...
	eth1_pins_mx: eth1_mx-0 {
		pins1 {
			pinmux = <STM32_PINMUX('A', 1, AF11)>, /* ETH1_REF_CLK */
					 <STM32_PINMUX('B', 12, AF11)>, /* ETH1_TXD0 */
					 <STM32_PINMUX('C', 1, AF11)>, /* ETH1_MDC */
					 <STM32_PINMUX('G', 14, AF11)>; /* ETH1_TXD1 */
			bias-disable;
			drive-push-pull;
			slew-rate = <1>;
		};
		pins2 {
			pinmux = <STM32_PINMUX('A', 2, AF11)>; /* ETH1_MDIO */
			bias-disable;
			drive-push-pull;
			slew-rate = <0>;
		};
		pins3 {
			pinmux = <STM32_PINMUX('A', 7, AF11)>, /* ETH1_CRS_DV */
					 <STM32_PINMUX('C', 4, AF11)>, /* ETH1_RXD0 */
					 <STM32_PINMUX('C', 5, AF11)>, /* ETH1_RXD1 */
					 <STM32_PINMUX('G', 12, AF11)>; /* ETH1_PHY_INTN */
			bias-disable;
		};
		pins4 {
			pinmux = <STM32_PINMUX('B', 11, AF11)>; /* ETH1_TX_EN */
		};
	};

	eth1_sleep_pins_mx: eth1_sleep_mx-0 {
		pins {
			pinmux = <STM32_PINMUX('A', 1, ANALOG)>, /* ETH1_REF_CLK */
					 <STM32_PINMUX('A', 2, ANALOG)>, /* ETH1_MDIO */
					 <STM32_PINMUX('A', 7, ANALOG)>, /* ETH1_CRS_DV */
					 <STM32_PINMUX('B', 11, ANALOG)>, /* ETH1_TX_EN */
					 <STM32_PINMUX('B', 12, ANALOG)>, /* ETH1_TXD0 */
					 <STM32_PINMUX('C', 1, ANALOG)>, /* ETH1_MDC */
					 <STM32_PINMUX('C', 4, ANALOG)>, /* ETH1_RXD0 */
					 <STM32_PINMUX('C', 5, ANALOG)>, /* ETH1_RXD1 */
					 <STM32_PINMUX('G', 12, ANALOG)>, /* ETH1_PHY_INTN */
					 <STM32_PINMUX('G', 14, ANALOG)>; /* ETH1_TXD1 */
		};
	};

...
...
};

Accessing the peripheral[edit | edit source]

ETRA SOM provides the primary network interface mapped at eth0.

Linux messages at boot time[edit | edit source]

root@desk-mp1:~# dmesg | grep eth
[    1.922023] stm32-dwmac 5800a000.ethernet: IRQ eth_lpi not found
[    1.927733] stm32-dwmac 5800a000.ethernet: User ID: 0x40, Synopsys ID: 0x42
[    1.933692] stm32-dwmac 5800a000.ethernet:   DWMAC4/5
[    1.938567] stm32-dwmac 5800a000.ethernet: DMA HW capability register supported
[    1.945994] stm32-dwmac 5800a000.ethernet: RX Checksum Offload Engine supported
[    1.953305] stm32-dwmac 5800a000.ethernet: TX Checksum insertion supported
[    1.960108] stm32-dwmac 5800a000.ethernet: Wake-Up On Lan supported
[    1.966518] stm32-dwmac 5800a000.ethernet: TSO supported
[    1.971729] stm32-dwmac 5800a000.ethernet: Enable RX Mitigation via HW Watchdog Timer
[    1.979598] stm32-dwmac 5800a000.ethernet: device MAC address 9a:47:f7:21:89:34
[    1.986895] stm32-dwmac 5800a000.ethernet: Enabled L3L4 Flow TC (entries=2)
[    1.993922] stm32-dwmac 5800a000.ethernet: Enabled RFS Flow TC (entries=8)
[    2.000739] stm32-dwmac 5800a000.ethernet: TSO feature enabled
[    2.006616] stm32-dwmac 5800a000.ethernet: Using 32 bits DMA width
[   14.927490] using random self ethernet address
[   14.939533] using random host ethernet address
[   19.442843] stm32-dwmac 5800a000.ethernet eth0: PHY [stmmac-0:00] driver [Micrel KSZ8081 or KSZ8091] (irq=POLL)
[   19.443849] stm32-dwmac 5800a000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
[   19.453202] stm32-dwmac 5800a000.ethernet eth0: No Safety Features support found
[   19.453248] stm32-dwmac 5800a000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported
[   19.455133] stm32-dwmac 5800a000.ethernet eth0: registered PTP clock
[   19.468213] stm32-dwmac 5800a000.ethernet eth0: configuring for phy/rmii link mode
[   22.561014] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[   22.561100] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

Cable connection:

...
...
[  222.241453] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
...
...

Check the interface with ifconfig[edit | edit source]

root@desk-mp1:~# ifconfig eth0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.89  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::10c2:6bff:febc:378a  prefixlen 64  scopeid 0x20<link>
        ether 12:c2:6b:bc:37:8a  txqueuelen 1000  (Ethernet)
        RX packets 4409  bytes 489414 (477.9 KiB)
        RX errors 0  dropped 123  overruns 0  frame 0
        TX packets 147  bytes 20171 (19.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 44  base 0xa000

Test with iperf[edit | edit source]

root@desk-mp1:~# iperf3 -t 5 -c 192.168.0.168
Connecting to host 192.168.0.168, port 5201
[  5] local 192.168.0.89 port 47054 connected to 192.168.0.168 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  11.3 MBytes  95.1 Mbits/sec    0    153 KBytes
[  5]   1.00-2.00   sec  11.1 MBytes  92.8 Mbits/sec    0    168 KBytes
[  5]   2.00-3.00   sec  11.3 MBytes  94.9 Mbits/sec    0    239 KBytes
[  5]   3.00-4.00   sec  10.9 MBytes  91.7 Mbits/sec    0    252 KBytes
[  5]   4.00-5.00   sec  11.2 MBytes  94.4 Mbits/sec    0    279 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-5.00   sec  55.9 MBytes  93.8 Mbits/sec    0             sender
[  5]   0.00-5.05   sec  55.2 MBytes  91.8 Mbits/sec                  receiver

iperf Done.

Peripheral LCD[edit | edit source]

Device tree configuration[edit | edit source]

Here below an example of device tree configuration used on standard DAVE's kit for the ETRA SOM:

From the kernel device tree stm32mp157a-dcsb5000dd1r.dts where RGB interface has been configured for a LCD panel (800x480 18bit):

/ {
    ...
    ...
    panel-rgb@0 {
		status = "okay";
		power-supply = <&lcd_vdd>;
		backlight = <&panel_backlight>;

		compatible = "panel-dpi", "simple-panel";
		data-mapping = "bgr666";

		width-mm = <154>;
		height-mm = <87>;

		panel-timing {
			clock-frequency = <33000000>;
			hactive = <800>;
			vactive = <480>;

			hsync-len = <1>;
			hfront-porch = <210>;
			hback-porch = <88>;

			vsync-len = <3>;
			vfront-porch = <22>;
			vback-porch = <32>;


			hsync-active = <0>;
			vsync-active = <0>;

			de-active = <1>;
			pixelclk-active = <1>;
		};

		port {
			panel_rgb_in: endpoint {
				remote-endpoint = <&ltdc_out_rgb>;
			};
		};
	};

	panel_backlight: backlight {
		compatible = "pwm-backlight";
		pwms = <&bl_pwm 3 5000000 0>;
		pwm-names = "backlight";
		power-supply = <&lcd_5v>;

		brightness-levels = <0 3 6 8 11 13 16 18 21 23 26 29 31 34 36 39 41 44 46 49 51 54 57 59 62 64 67 69 72 74 77 80 82 85 87 90 92 95 97 100 102 105 108 110 113 115 118 120 123 125 128 131 133 136 138 141 143 146 148 151 153 156 159 161 164 166 169 171 174 176 179 182 184 187 189 192 194 197 199 202 204 207 210 212 215 217 220 222 225 227 230 233 235 238 240 243 245 248 250 253 255>;
		default-brightness-level = <75>;
	};
    ...
    ...
};

...
...
&ltdc{
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&ltdc_pins_mx>;
	pinctrl-1 = <&ltdc_sleep_pins_mx>;
	status = "okay";

	/* USER CODE BEGIN ltdc */
	port {
		ltdc_out_rgb: endpoint {
			remote-endpoint = <&panel_rgb_in>;
		};
	};
	/* USER CODE END ltdc */
};
...
...
&pinctrl{
...
...
	ltdc_pins_mx: ltdc_mx-0 {
		pins1 {
			pinmux = <STM32_PINMUX('A', 3, AF14)>, /* LTDC_B5 */
					 <STM32_PINMUX('A', 4, AF14)>, /* LTDC_VSYNC */
					 <STM32_PINMUX('A', 5, AF14)>, /* LTDC_R4 */
					 <STM32_PINMUX('A', 6, AF14)>, /* LTDC_G2 */
					 <STM32_PINMUX('B', 0, AF9)>, /* LTDC_R3 */
					 <STM32_PINMUX('B', 1, AF9)>, /* LTDC_R6 */
					 <STM32_PINMUX('B', 8, AF14)>, /* LTDC_B6 */
					 <STM32_PINMUX('B', 9, AF14)>, /* LTDC_B7 */
					 <STM32_PINMUX('B', 10, AF14)>, /* LTDC_G4 */
					 <STM32_PINMUX('C', 0, AF14)>, /* LTDC_R5 */
					 <STM32_PINMUX('C', 6, AF14)>, /* LTDC_HSYNC */
					 <STM32_PINMUX('C', 7, AF14)>, /* LTDC_G6 */
					 <STM32_PINMUX('C', 10, AF14)>, /* LTDC_R2 */
					 <STM32_PINMUX('D', 3, AF14)>, /* LTDC_G7 */
					 <STM32_PINMUX('D', 10, AF14)>, /* LTDC_B3 */
					 <STM32_PINMUX('E', 11, AF14)>, /* LTDC_G3 */
					 <STM32_PINMUX('E', 12, AF14)>, /* LTDC_B4 */
					 <STM32_PINMUX('E', 13, AF14)>, /* LTDC_DE */
					 <STM32_PINMUX('E', 15, AF14)>, /* LTDC_R7 */
					 <STM32_PINMUX('F', 11, AF14)>, /* LTDC_G5 */
					 <STM32_PINMUX('G', 10, AF14)>; /* LTDC_B2 */
			bias-disable;
			drive-push-pull;
			slew-rate = <0>;
		};
		pins2 {
			pinmux = <STM32_PINMUX('G', 7, AF14)>; /* LTDC_CLK */
			bias-disable;
			drive-push-pull;
			slew-rate = <1>;
		};
	};

	ltdc_sleep_pins_mx: ltdc_sleep_mx-0 {
		pins {
			pinmux = <STM32_PINMUX('A', 3, ANALOG)>, /* LTDC_B5 */
					 <STM32_PINMUX('A', 4, ANALOG)>, /* LTDC_VSYNC */
					 <STM32_PINMUX('A', 5, ANALOG)>, /* LTDC_R4 */
					 <STM32_PINMUX('A', 6, ANALOG)>, /* LTDC_G2 */
					 <STM32_PINMUX('B', 0, ANALOG)>, /* LTDC_R3 */
					 <STM32_PINMUX('B', 1, ANALOG)>, /* LTDC_R6 */
					 <STM32_PINMUX('B', 8, ANALOG)>, /* LTDC_B6 */
					 <STM32_PINMUX('B', 9, ANALOG)>, /* LTDC_B7 */
					 <STM32_PINMUX('B', 10, ANALOG)>, /* LTDC_G4 */
					 <STM32_PINMUX('C', 0, ANALOG)>, /* LTDC_R5 */
					 <STM32_PINMUX('C', 6, ANALOG)>, /* LTDC_HSYNC */
					 <STM32_PINMUX('C', 7, ANALOG)>, /* LTDC_G6 */
					 <STM32_PINMUX('C', 10, ANALOG)>, /* LTDC_R2 */
					 <STM32_PINMUX('D', 3, ANALOG)>, /* LTDC_G7 */
					 <STM32_PINMUX('D', 10, ANALOG)>, /* LTDC_B3 */
					 <STM32_PINMUX('E', 11, ANALOG)>, /* LTDC_G3 */
					 <STM32_PINMUX('E', 12, ANALOG)>, /* LTDC_B4 */
					 <STM32_PINMUX('E', 13, ANALOG)>, /* LTDC_DE */
					 <STM32_PINMUX('E', 15, ANALOG)>, /* LTDC_R7 */
					 <STM32_PINMUX('F', 11, ANALOG)>, /* LTDC_G5 */
					 <STM32_PINMUX('G', 7, ANALOG)>, /* LTDC_CLK */
					 <STM32_PINMUX('G', 10, ANALOG)>; /* LTDC_B2 */
		};
	};
...
...
};

Accessing the peripheral[edit | edit source]

Linux messages at boot time[edit | edit source]

root@desk-mp1:~# dmesg | grep display
[    0.087536] platform panel-rgb@0: Fixing up cyclic dependency with 5a001000.display-controller
[    2.919515] [drm] Initialized stm 1.0.0 20170330 for 5a001000.display-controller on minor 0
[    2.989666] stm32-display 5a001000.display-controller: [drm] fb0: stmdrmfb frame buffer device

Pheripheral Touchscreen[edit | edit source]

The screen supplied with the kit has a capacitive touchscreen, it is connected to the board via the USB OTG port

Linux messages at boot time[edit | edit source]

...
[    3.408937] usb 1-1: new full-speed USB device number 2 using dwc2
[    3.678177] input: ILITEK ILITEK-TP as /devices/platform/soc/49000000.usb-otg/usb1/1-1/1-1:1.0/0003:222A:0001.0001/input/input1
[    3.689297] hid-multitouch 0003:222A:0001.0001: input,hidraw0: USB HID v1.10 Device [ILITEK ILITEK-TP] on usb-49000000.usb-otg-1/input0
[    3.705350] input: ILITEK ILITEK-TP Mouse as /devices/platform/soc/49000000.usb-otg/usb1/1-1/1-1:1.1/0003:222A:0001.0002/input/input2
[    3.717019] hid-generic 0003:222A:0001.0002: input,hidraw1: USB HID v1.10 Mouse [ILITEK ILITEK-TP] on usb-49000000.usb-otg-1/input1
...

Usage with evtest[edit | edit source]

Use command evtest:

root@desk-mp1:~# evtest 
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:      pmic_onkey
/dev/input/event1:      ILITEK ILITEK-TP
/dev/input/event2:      ILITEK ILITEK-TP Mouse
Select the device event number [0-2]: 1
Input driver version is 1.0.1
Input device ID: bus 0x3 vendor 0x222a product 0x1 version 0x110
Input device name: "ILITEK ILITEK-TP"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 330 (BTN_TOUCH)
  Event type 3 (EV_ABS)
    Event code 0 (ABS_X)
      Value      0
      Min        0
      Max    16384
      Resolution      53
    Event code 1 (ABS_Y)
      Value      0
      Min        0
      Max     9600
      Resolution      55
    Event code 47 (ABS_MT_SLOT)
      Value      0
      Min        0
      Max        9
    Event code 53 (ABS_MT_POSITION_X)
      Value      0
      Min        0
      Max    16384
      Resolution      53
    Event code 54 (ABS_MT_POSITION_Y)
      Value      0
      Min        0
      Max     9600
      Resolution      55
    Event code 57 (ABS_MT_TRACKING_ID)
      Value      0
      Min        0
      Max    65535
  Event type 4 (EV_MSC)
    Event code 5 (MSC_TIMESTAMP)
Properties:
  Property type 1 (INPUT_PROP_DIRECT)
Testing ... (interrupt to exit)
Event: time 1690972553.988150, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 0
Event: time 1690972553.988150, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 7993
Event: time 1690972553.988150, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 4871
Event: time 1690972553.988150, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1690972553.988150, type 3 (EV_ABS), code 0 (ABS_X), value 7993
Event: time 1690972553.988150, type 3 (EV_ABS), code 1 (ABS_Y), value 4871
Event: time 1690972553.988150, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 0
Event: time 1690972553.988150, -------------- SYN_REPORT ------------
Event: time 1690972553.994101, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 8000
Event: time 1690972553.994101, -------------- SYN_REPORT ------------
Event: time 1690972554.000104, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 16000
Event: time 1690972554.000104, -------------- SYN_REPORT ------------
Event: time 1690972554.006103, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1
Event: time 1690972554.006103, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1690972554.006103, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 24000
Event: time 1690972554.006103, -------------- SYN_REPORT ------------

Peripheral SD[edit | edit source]

Device tree configuration[edit | edit source]

Here below an example of device tree configuration used on standard DAVE's kit for the ETRA SOM:

From kernel device tree stm32mp157a-dcsb5000dd1r.dts:

&pinctrl {
...
...
	sdmmc1_pins_mx: sdmmc1_mx-0 {
		u-boot,dm-pre-reloc;
		pins1 {
			u-boot,dm-pre-reloc;
			pinmux = <STM32_PINMUX('C', 8, AF12)>, /* SDMMC1_D0 */
					 <STM32_PINMUX('C', 9, AF12)>, /* SDMMC1_D1 */
					 <STM32_PINMUX('C', 11, AF12)>, /* SDMMC1_D3 */
					 <STM32_PINMUX('D', 2, AF12)>, /* SDMMC1_CMD */
					 <STM32_PINMUX('E', 6, AF8)>; /* SDMMC1_D2 */
			bias-disable;
			drive-push-pull;
			slew-rate = <1>;
		};
		pins2 {
			u-boot,dm-pre-reloc;
			pinmux = <STM32_PINMUX('C', 12, AF12)>; /* SDMMC1_CK */
			bias-disable;
			drive-push-pull;
			slew-rate = <3>;
		};
	};

	sdmmc1_opendrain_pins_mx: sdmmc1_opendrain_mx-0 {
		u-boot,dm-pre-reloc;
		pins1 {
			u-boot,dm-pre-reloc;
			pinmux = <STM32_PINMUX('C', 8, AF12)>, /* SDMMC1_D0 */
					 <STM32_PINMUX('C', 9, AF12)>, /* SDMMC1_D1 */
					 <STM32_PINMUX('C', 11, AF12)>, /* SDMMC1_D3 */
					 <STM32_PINMUX('E', 6, AF8)>; /* SDMMC1_D2 */
			bias-disable;
			drive-push-pull;
			slew-rate = <1>;
		};
		pins2 {
			u-boot,dm-pre-reloc;
			pinmux = <STM32_PINMUX('C', 12, AF12)>; /* SDMMC1_CK */
			bias-disable;
			drive-push-pull;
			slew-rate = <3>;
		};
		pins3 {
			u-boot,dm-pre-reloc;
			pinmux = <STM32_PINMUX('D', 2, AF12)>; /* SDMMC1_CMD */
			bias-disable;
			drive-open-drain;
			slew-rate = <1>;
		};
	};

	sdmmc1_sleep_pins_mx: sdmmc1_sleep_mx-0 {
		pins {
			pinmux = <STM32_PINMUX('C', 8, ANALOG)>, /* SDMMC1_D0 */
					 <STM32_PINMUX('C', 9, ANALOG)>, /* SDMMC1_D1 */
					 <STM32_PINMUX('C', 11, ANALOG)>, /* SDMMC1_D3 */
					 <STM32_PINMUX('C', 12, ANALOG)>, /* SDMMC1_CK */
					 <STM32_PINMUX('D', 2, ANALOG)>, /* SDMMC1_CMD */
					 <STM32_PINMUX('E', 6, ANALOG)>; /* SDMMC1_D2 */
		};
	};
...
...
};
...
...
&sdmmc1{
	pinctrl-names = "default", "opendrain", "sleep";
	pinctrl-0 = <&sdmmc1_pins_mx>;
	pinctrl-1 = <&sdmmc1_opendrain_pins_mx>;
	pinctrl-2 = <&sdmmc1_sleep_pins_mx>;
	status = "okay";

	/* USER CODE BEGIN sdmmc1 */
	cd-gpios = <&gpioe 9 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
	disable-wp;
	st,neg-edge;
	bus-width = <4>;
	vmmc-supply = <&v3v3>;
	/* USER CODE END sdmmc1 */
};
...
...

Accessing the peripheral[edit | edit source]

Once initialized, the SD device is mapped to the standard /dev/mmcblk1pX block device, depending on how many partition are created on the SD card.

Linux messages at boot time[edit | edit source]

If the microSd card is inserted at boot time, the kernel - once the USDHC interface has been initialized - prints the device information and the partition detected like p1, p2, etc.:

root@desk-mp1:~# dmesg | grep mmc
[    0.000000] Kernel command line: root=/dev/mmcblk1p10 rootwait rw console=ttySTM0,115200
[    2.216453] mmci-pl18x 48004000.mmc: mmc0: PL180 manf 53 rev2 at 0x48004000 irq 38,0 (pio)
[    2.417608] mmci-pl18x 58005000.mmc: Got CD GPIO
[    2.422190] mmci-pl18x 58005000.mmc: mmc1: PL180 manf 53 rev2 at 0x58005000 irq 42,0 (pio)
[    2.447764] mmc0: queuing unknown CIS tuple 0x01 [d9 01 ff] (3 bytes)
[    2.459096] mmci-pl18x 58007000.mmc: mmc2: PL180 manf 53 rev2 at 0x58007000 irq 43,0 (pio)
[    2.467440] mmc0: queuing unknown CIS tuple 0x1a [01 01 00 02 07] (5 bytes)
[    2.476177] mmc0: queuing unknown CIS tuple 0x1b [c1 41 30 30 ff ff 32 00] (8 bytes)
[    2.484060] mmc0: queuing unknown CIS tuple 0x14 [] (0 bytes)
[    2.495219] mmc0: new high speed SDIO card at address 0001
[    2.502454] mmc1: new high speed SDHC card at address 59b4
[    2.509422] mmcblk1: mmc1:59b4 USDU1 14.9 GiB 
[    2.532495] mmcblk1: p1 p2 p3 p4 p5 p6 p7 p8 p9 p10 p11
[    2.598234] mmc2: new DDR MMC card at address 0001
[    2.603366] mmcblk2: mmc2:0001 W62704 3.53 GiB 
[    2.612505] mmcblk2boot0: mmc2:0001 W62704 2.00 MiB 
[    2.619409] mmcblk2boot1: mmc2:0001 W62704 2.00 MiB 
[    2.625675] mmcblk2rpmb: mmc2:0001 W62704 512 KiB, chardev (240:0)
[    3.320665] EXT4-fs (mmcblk1p10): recovery complete
[    3.328018] EXT4-fs (mmcblk1p10): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.
[    8.586451] EXT4-fs (mmcblk1p10): re-mounted. Opts: (null). Quota mode: disabled.
[    8.819545] EXT4-fs (mmcblk1p8): recovery complete
[    8.822966] EXT4-fs (mmcblk1p8): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.
[    9.403677] EXT4-fs (mmcblk1p9): recovery complete
[    9.411111] EXT4-fs (mmcblk1p9): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.
[    9.745622] EXT4-fs (mmcblk1p11): recovery complete
[    9.749683] EXT4-fs (mmcblk1p11): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.

Additional information[edit | edit source]

If the root file system configuration does not automatically mount the partition, it is possible to mount the device using the following command:

root@desk-mp1:~# mkdir -p /mnt/boot
root@desk-mp1:~# mkdir -p /mnt/rfs
root@desk-mp1:~# mount /dev/mmcblk1p1 /mnt/boot/
root@desk-mp1:~# mount /dev/mmcblk1p2 /mnt/rfs/
root@desk-mp1:~# ls /mnt/boot/
boot.scr  lost+found  stm32mp157a-dcsb5000dd1r.dtb  uImage
root@desk-mp1:~# ls /mnt/rfs/
bin  boot  dev  etc  home  lib  lost+found  media  mnt  proc  run  sbin  srv  sys  tmp  usr  var  vendor
root@desk-mp1:~#

and then the mounted partition are available on the /mnt/boot and /mnt/rfs root file system directories.

Peripheral UARTs[edit | edit source]

Device tree configuration[edit | edit source]

Here below an example of device tree configuration used on standard DAVE's kit for the ETRA SOM:

From the kernel stm32mp157a-dcsb5000dd1r.dts device tree:

&uart4{
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&uart4_pins_mx>;
	pinctrl-1 = <&uart4_sleep_pins_mx>;
	status = "okay";

	/* USER CODE BEGIN uart4 */
	/delete-property/dmas;
	/delete-property/dma-names;
	/* USER CODE END uart4 */
};
...
...
&pinctrl {
...
...
	uart4_pins_mx: uart4_mx-0 {
		pins1 {
			pinmux = <STM32_PINMUX('B', 2, AF8)>; /* UART4_RX */
			bias-disable;
		};
		pins2 {
			pinmux = <STM32_PINMUX('G', 11, AF6)>; /* UART4_TX */
			bias-disable;
			drive-push-pull;
			slew-rate = <0>;
		};
	};

	uart4_sleep_pins_mx: uart4_sleep_mx-0 {
		pins {
			pinmux = <STM32_PINMUX('B', 2, ANALOG)>, /* UART4_RX */
					 <STM32_PINMUX('G', 11, ANALOG)>; /* UART4_TX */
		};
	};
...
...
};

Accessing the peripheral[edit | edit source]

Linux messages at boot time[edit | edit source]

root@desk-mp1:~# dmesg | grep serial
[    0.559130] stm32-usart 4000f000.serial: interrupt mode for rx (no dma)
[    0.559170] stm32-usart 4000f000.serial: interrupt mode for tx (no dma)
[    0.559210] 4000f000.serial: ttySTM1 at MMIO 0x4000f000 (irq = 49, base_baud = 4000000) is a stm32-usart
[    0.561377] stm32-usart 40010000.serial: interrupt mode for rx (no dma)
[    0.561413] stm32-usart 40010000.serial: interrupt mode for tx (no dma)
[    0.561450] 40010000.serial: ttySTM0 at MMIO 0x40010000 (irq = 50, base_baud = 4000000) is a stm32-usart
[    1.861292] stm32-usart 40018000.serial: interrupt mode for rx (no dma)
[    1.866587] stm32-usart 40018000.serial: interrupt mode for tx (no dma)
[    1.873293] 40018000.serial: ttySTM3 at MMIO 0x40018000 (irq = 51, base_baud = 4000000) is a stm32-usart
[    1.884932] stm32-usart 40019000.serial: interrupt mode for rx (no dma)
[    1.890313] stm32-usart 40019000.serial: interrupt mode for tx (no dma)
[    1.896815] 40019000.serial: ttySTM2 at MMIO 0x40019000 (irq = 52, base_baud = 4000000) is a stm32-usart

Usage with stty[edit | edit source]

N.B. UART mapping respect to ttymxcX is the following one:

uart4 <-> serial0 <-> ttySTM0
usart3 <-> serial1 <-> ttySTM1
uart8 <-> serial2 <-> ttySTM2
uart7 <-> serial3 <-> ttySTM3

For example, using a loopback HW connection (RX short circuited to TX on UART232 port) it is possible to test the send and receive data using the ttySTM1 device:

root@desk-mp1:~# stty -F /dev/ttySTM1 115200 -echo
root@desk-mp1:~# cat /dev/ttySTM1 &
root@desk-mp1:~# echo "Test loopback" > /dev/ttySTM1
root@desk-mp1:~# Test loopback

Additional information[edit | edit source]

Serial ports can be used through the standard serial programming API.

For detailed information, please refer to the Serial Programming HOWTO at Serial-Programming-HOWTO

Peripheral USB Host[edit | edit source]

Device tree configuration[edit | edit source]

Here below an example of device tree configuration used on standard DAVE's kit for the ETRA SOM:

From kernel device tree stm32mp157a-dcsb5000dd1r.dts:

...
...
&usbh_ehci{
	status = "okay";

	/* USER CODE BEGIN usbh_ehci */
	phys = <&usbphyc_port0>;
	phy-names = "usb";
	/* USER CODE END usbh_ehci */
};

&usbh_ohci{
	status = "okay";

	/* USER CODE BEGIN usbh_ohci */
	/* USER CODE END usbh_ohci */
};

&usbphyc{
	status = "okay";

	/* USER CODE BEGIN usbphyc */
	/* USER CODE END usbphyc */
};

&usbphyc_port0{
	status = "okay";

	/* USER CODE BEGIN usbphyc_port0 */
	phy-supply = <&vdd_usb>;

	connector {
		compatible = "usb-a-connector";
		vbus-supply = <&vbus_sw>;
	};
	/* USER CODE END usbphyc_port0 */
};
...
...

Accessing the peripheral[edit | edit source]

Linux messages at boot time[edit | edit source]

When a USB peripheral is inserted, in the following example a memory mass storage device, the kernel recognizes the device (i.e. xlass, vendor id, product id, etc.)

[  496.159495] usb 2-1: new high-speed USB device number 2 using ehci-platform
[  496.368878] usb-storage 2-1:1.0: USB Mass Storage device detected
[  496.379336] scsi host0: usb-storage 2-1:1.0
[  496.846840] usbcore: registered new interface driver uas
[  497.441374] scsi 0:0:0:0: Direct-Access      USB      SanDisk 3.2Gen1 1.00 PQ: 0 ANSI: 6
[  497.453487] sd 0:0:0:0: [sda] 60125184 512-byte logical blocks: (30.8 GB/28.7 GiB)
[  497.461344] sd 0:0:0:0: [sda] Write Protect is off
[  497.464745] sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00
[  497.472234] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[  497.488444] sd 0:0:0:0: Attached scsi generic sg0 type 0
[  497.507380]  sda: sda1
[  497.603592] sd 0:0:0:0: [sda] Attached SCSI removable disk

Additional information[edit | edit source]

If the root file system configuration does not automatically mount the partition, it is possible to mount the device using the following command:

root@desk-mp1:~# mkdir -p /mnt/usb
root@desk-mp1:~# mount /dev/sda1 /mnt/usb/
root@desk-mp1:~# ls -la /mnt/usb/
total 24
drwxr-xr-x  3 root root   16384 Jan  1  1970  .
drwxr-xr-x  4 root root    4096 Jul 28 13:38  ..
drwx------  2 root root   16384 Jul 28 08:54 lost+found
-rw-r--r--  1 root root 8765832 Jul 28 08:54 uImage

Peripheral USB OTG[edit | edit source]

Device tree configuration[edit | edit source]

Here below an example of device tree configuration used on standard DAVE's kit for the ETRA SOM

OTG port can be forced using the 4th DIP-switch (see the DIP settings section on the Boot configurations page):

OFF: otg mode, the connected peripheral has its ID pin properly set and it is able to change the working mode according to the pin logic value
ON: host force the host mode.

From kernel device tree stm32mp157a-dcsb5000dd1r.dts:

...
...
&usbotg_hs{
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&usb_otg_hs_pins_mx>;
	pinctrl-1 = <&usb_otg_hs_sleep_pins_mx>;
	status = "okay";

	/* USER CODE BEGIN usbotg_hs */
	compatible = "st,stm32mp15-hsotg", "snps,dwc2";
	phys = <&usbphyc_port1 0>;
	phy-names = "usb2-phy";
	vbus-supply = <&vbus_otg>;
	dr_mode = "otg";
	/* USER CODE END usbotg_hs */
};

&usbphyc_port1{
	status = "okay";

	/* USER CODE BEGIN usbphyc_port1 */
	phy-supply = <&vdd_usb>;
	/* USER CODE END usbphyc_port1 */
};
...
...
pinctrl {
	...
	...
	usb_otg_hs_pins_mx: usb_otg_hs_mx-0 {
		pins {
			pinmux = <STM32_PINMUX('A', 10, ANALOG)>; /* USB_OTG_HS_ID */
		};
	};

	usb_otg_hs_sleep_pins_mx: usb_otg_hs_sleep_mx-0 {
		pins {
			pinmux = <STM32_PINMUX('A', 10, ANALOG)>; /* USB_OTG_HS_ID */
		};
	};
    ...
    ...
};
...
...

Accessing the peripheral[edit | edit source]

Linux messages at boot time[edit | edit source]

root@desk-mp1:~# dmesg | grep otg
[    2.202854] vbus_otg: supplied by bst_out
[    2.591726] dwc2 49000000.usb-otg: supply vusb_d not found, using dummy regulator
[    2.598534] dwc2 49000000.usb-otg: supply vusb_a not found, using dummy regulator
[    2.746347] dwc2 49000000.usb-otg: EPs: 9, dedicated fifos, 952 entries in SPRAM
[    2.753429] dwc2 49000000.usb-otg: DWC OTG Controller
[    2.757541] dwc2 49000000.usb-otg: new USB bus registered, assigned bus number 1
[    2.765060] dwc2 49000000.usb-otg: irq 74, io mem 0x49000000
[   13.812830] dwc2 49000000.usb-otg: bound driver configfs-gadget

Usage in Host mode[edit | edit source]

When a USB peripheral is inserted, in the following example a memory mass storage device, the kernel recognizes the device (i.e. class, vendor id, product id, etc.)

[  109.857720] usb 1-1: new high-speed USB device number 2 using dwc2
[  110.117799] usb-storage 1-1:1.0: USB Mass Storage device detected
[  110.127163] scsi host1: usb-storage 1-1:1.0
[  111.447577] scsi 1:0:0:0: Direct-Access     ADATA    USB Flash Drive  1100 PQ: 0 ANSI: 0 CCS
[  111.462507] sd 1:0:0:0: [sdb] 7913472 512-byte logical blocks: (4.05 GB/3.77 GiB)
[  111.471019] sd 1:0:0:0: Attached scsi generic sg1 type 0
[  111.491495] sd 1:0:0:0: [sdb] Write Protect is off
[  111.495087] sd 1:0:0:0: [sdb] Mode Sense: 43 00 00 00
[  111.501814] sd 1:0:0:0: [sdb] No Caching mode page found
[  111.505814] sd 1:0:0:0: [sdb] Assuming drive cache: write through
[  111.520046]  sdb: sdb1
[  111.528131] sd 1:0:0:0: [sdb] Attached SCSI removable disk

Usage with mass-storage[edit | edit source]

root@desk-mp1:~# dd if=/dev/zero of=/tmp/mass count=16 bs=1M
16+0 records in
16+0 records out
16777216 bytes (17 MB, 16 MiB) copied, 0.111651 s, 150 MB/s
root@desk-mp1:~# mkfs.ext4 /tmp/mass
mke2fs 1.46.5 (30-Dec-2021)
Discarding device blocks: done
Creating filesystem with 16384 1k blocks and 4096 inodes
Filesystem UUID: 354cc3e0-2b27-4573-b1d6-d7fb99c3a535
Superblock backups stored on blocks:
        8193

Allocating group tables: done
Writing inode tables: done
Creating journal (1024 blocks): done
Writing superblocks and filesystem accounting information: done

root@desk-mp1:~# mkdir -p /tmp/loop
root@desk-mp1:~# mount /tmp/mass /tmp/loop
root@desk-mp1:~# dd if=/dev/urandom of=/tmp/loop/pippo bs=1M count=10
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.715313 s, 14.7 MB/s
root@desk-mp1:~# md5sum /tmp/loop/pippo
31743a261ce01c14f9c28f6529caba72  /tmp/loop/pippo
root@desk-mp1:~# umount /tmp/loop
root@desk-mp1:~# echo "" > /sys/kernel/config/usb_gadget/g1/UDC
root@desk-mp1:~# rm /sys/kernel/config/usb_gadget/g1/configs/c.1/rndis.0
root@desk-mp1:~# mkdir /sys/kernel/config/usb_gadget/g1/functions/mass_storage.1
root@desk-mp1:~# echo "/tmp/mass" > /sys/kernel/config/usb_gadget/g1/functions/mass_storage.1/lun.0/file
root@desk-mp1:~# ln -s /sys/kernel/config/usb_gadget/g1/functions/mass_storage.1 /sys/kernel/config/usb_gadget/g1/configs/c.1
root@desk-mp1:~# echo 49000000.usb-otg > /sys/kernel/config/usb_gadget/g1/UDC 
root@desk-mp1:~# lsblk
NAME         MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
sda            8:0    1   16M  0 disk 
mmcblk1      179:0    0 14.9G  0 disk 
|-mmcblk1p1  179:1    0  256K  0 part 
|-mmcblk1p2  179:2    0  256K  0 part 
|-mmcblk1p3  179:3    0  256K  0 part 
|-mmcblk1p4  179:4    0  256K  0 part 
|-mmcblk1p5  179:5    0    4M  0 part 
|-mmcblk1p6  179:6    0    4M  0 part 
|-mmcblk1p7  179:7    0  512K  0 part 
|-mmcblk1p8  179:8    0   64M  0 part /boot
|-mmcblk1p9  179:9    0   16M  0 part /vendor
|-mmcblk1p10 179:10   0    2G  0 part /
`-mmcblk1p11 179:11   0  128M  0 part /usr/local
mmcblk2      179:16   0  3.5G  0 disk 
mmcblk2boot0 179:32   0    2M  1 disk 
mmcblk2boot1 179:48   0    2M  1 disk 
root@desk-mp1:~# mkdir -p /tmp/usb
root@desk-mp1:~# mount /dev/sda /tmp/usb/
root@desk-mp1:~# md5sum /tmp/usb/pippo
31743a261ce01c14f9c28f6529caba72  /tmp/usb/pippo

Pheripheral RTC[edit | edit source]

On SBC ETRA there are two rtc one on ETRA SOM and one on carrier board.

root@desk-mp1:~# ls -la /dev/rtc*
lrwxrwxrwx 1 root root      4 Aug  2 10:45 /dev/rtc -> rtc0
crw------- 1 root root 253, 0 Aug  2 10:45 /dev/rtc0
crw------- 1 root root 253, 1 Aug  2 10:45 /dev/rtc1

Device tree configuration[edit | edit source]

...
...
&i2c4{
    ...
    ...
    ds3232: rtc@68 {
        compatible = "dallas,ds3232";
        reg = <0x68>;
        interrupt-parent = <&gpiod>;
        interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
        status = "okay";
    };
    ...
    ...
};
...
...
&rtc{
	status = "okay";

	/* USER CODE BEGIN rtc */
	/* USER CODE END rtc */
};
...
...

Linux messages at boot time[edit | edit source]

...
[    2.006753] stm32_rtc 5c004000.rtc: registered as rtc0
[    2.010619] stm32_rtc 5c004000.rtc: setting system clock to 2023-08-02T10:45:30 UTC (1690973130)
[    2.019926] stm32_rtc 5c004000.rtc: registered rev:1.2
...
[    2.177792] rtc-ds3232 1-0068: registered as rtc1
...

Usage with hwclock[edit | edit source]

root@desk-mp1:~# hwclock -f /dev/rtc1 -v
hwclock from util-linux 2.37.4
System Time: 1690975162.373458
Using the rtc interface to the clock.
Assuming hardware clock is kept in UTC time.
Waiting for clock tick...
...got clock tick
Time read from Hardware Clock: 2023/08/02 11:19:24
Hw clock time : 2023/08/02 11:19:24 = 1690975164 seconds since 1969
Time since last adjustment is 1690975164 seconds
Calculated Hardware Clock drift is 0.000000 seconds
2023-08-02 11:19:23.549038+00:00

Pheripheral DWS[edit | edit source]

The DWS add-on module present on ETRA EVK it used to have the Wireless and Bluetooth connection.

The binary provided in the kit and the downloadable binary desk-image-qt5-openstlinux-weston-desk-mp1.wic.bz2, if the DWS module is present, the drivers for the wireless and Bluetooth connection will automatically start.

The Bluetooth and the wireless connection are managed with rfkill.

Device tree configuration[edit | edit source]

The device tree has three sections devoted to the wireless subsystems configuration, i.e. wifi, bluetooth, rfkill

Wifi[edit | edit source]

The wireless driver is a module built out of tree, the source is present only in the bsp, the module in question therefore cannot be built having only the kernel source code

The communication bus used is the one destined for the sdmmc3.

...
...
/{
    ...
    ...
    reg_wlan_en: wlan_en  {
        compatible = "regulator-fixed";
        regulator-name = "wlan-en-regulator";
        regulator-min-microvolt = <3300000>;
        regulator-max-microvolt = <3300000>;
        enable-active-high;
        gpio = <&gpioe 8 GPIO_ACTIVE_HIGH>;
        vin-supply = <&vin>;
        startup-delay-us = <150000>;
    };
    ...
    ...
};
...
...
&pinctrl {
    ...
    ...
    sdmmc3_pins_mx: sdmmc3_mx-0 {
        pins1 {
            pinmux = <STM32_PINMUX('D', 0, AF10)>, /* SDMMC3_CMD */
                     <STM32_PINMUX('D', 1, AF10)>, /* SDMMC3_D0 */
                     <STM32_PINMUX('D', 4, AF10)>, /* SDMMC3_D1 */
                     <STM32_PINMUX('D', 5, AF10)>, /* SDMMC3_D2 */
                     <STM32_PINMUX('D', 7, AF10)>; /* SDMMC3_D3 */
            bias-disable;
            drive-push-pull;
            slew-rate = <1>;
        };
        pins2 {
            pinmux = <STM32_PINMUX('G', 15, AF10)>; /* SDMMC3_CK */
            bias-disable;
            drive-push-pull;
            slew-rate = <3>;
            slew-rate = <1>;
        };
    };

    sdmmc3_opendrain_pins_mx: sdmmc3_opendrain_mx-0 {
        pins1 {
            pinmux = <STM32_PINMUX('D', 0, AF10)>; /* SDMMC3_CMD */
            bias-disable;
            drive-open-drain;
            slew-rate = <1>;
        };
        pins2 {
            pinmux = <STM32_PINMUX('D', 1, AF10)>, /* SDMMC3_D0 */
                     <STM32_PINMUX('D', 4, AF10)>, /* SDMMC3_D1 */
                     <STM32_PINMUX('D', 5, AF10)>, /* SDMMC3_D2 */
                     <STM32_PINMUX('D', 7, AF10)>; /* SDMMC3_D3 */
            bias-disable;
            drive-push-pull;
            slew-rate = <1>;
        };
        pins3 {
            pinmux = <STM32_PINMUX('G', 15, AF10)>; /* SDMMC3_CK */
            bias-disable;
            drive-push-pull;
            slew-rate = <1>;
        };
    };

    sdmmc3_sleep_pins_mx: sdmmc3_sleep_mx-0 {
        pins {
            pinmux = <STM32_PINMUX('D', 0, ANALOG)>, /* SDMMC3_CMD */
                     <STM32_PINMUX('D', 1, ANALOG)>, /* SDMMC3_D0 */
                     <STM32_PINMUX('D', 4, ANALOG)>, /* SDMMC3_D1 */
                     <STM32_PINMUX('D', 5, ANALOG)>, /* SDMMC3_D2 */
                     <STM32_PINMUX('D', 7, ANALOG)>, /* SDMMC3_D3 */
                     <STM32_PINMUX('G', 15, ANALOG)>; /* SDMMC3_CK */
        };
    };

    ...
    ...
};
...
...
&sdmmc3{
    pinctrl-names = "default", "opendrain", "sleep";
    pinctrl-0 = <&sdmmc3_pins_mx>;
    pinctrl-1 = <&sdmmc3_opendrain_pins_mx>;
    pinctrl-2 = <&sdmmc3_sleep_pins_mx>;
    status = "okay";

    /* USER CODE BEGIN sdmmc3 */
    broken-cd;
    non-removable;
    no-1-8-v;
    st,neg-edge;
    bus-width = <4>;
    vmmc-supply = <&vdd>;
    vmmc-supply = <&reg_wlan_en>;
    /* USER CODE END sdmmc3 */
};
...
...

Bluetooth[edit | edit source]

Bluetooth hardware configuration has shared pins in conflict with the NOR memory option

The gpios used for the serial bus to use Bluetooth in the DWS are shared with the SPI bus to communicate with the NOR. If the BT interface is required the NOR memory cannot be used and vice versa

...
...
/ {
    ...
    ...
    aliases{
        ...
        ...
        serial3 = &uart7;
        ...
        ...
    };
    ...
    ...
};
...
...
&pinctrl{
        uart7_pins_mx: uart7_mx-0 {
        pins1 {
            pinmux = <STM32_PINMUX('F', 6, AF7)>, /* UART7_RX */
                     <STM32_PINMUX('F', 9, AF7)>; /* UART7_CTS */
            bias-disable;
        };
        pins2 {
            pinmux = <STM32_PINMUX('F', 7, AF7)>, /* UART7_TX */
                     <STM32_PINMUX('F', 8, AF7)>; /* UART7_RTS */
            bias-disable;
            drive-push-pull;
            slew-rate = <0>;
        };
    };

    uart7_sleep_pins_mx: uart7_sleep_mx-0 {
        pins {
            pinmux = <STM32_PINMUX('F', 6, ANALOG)>, /* UART7_RX */
                     <STM32_PINMUX('F', 7, ANALOG)>, /* UART7_TX */
                     <STM32_PINMUX('F', 8, ANALOG)>, /* UART7_RTS */
                     <STM32_PINMUX('F', 9, ANALOG)>; /* UART7_CTS */
        };
    };

};
...
...
&qspi{
    ...
    ...
    status = "disabled";
    ...
    ...
};
...
...
&uart7{
    pinctrl-names = "default", "sleep";
    pinctrl-0 = <&uart7_pins_mx>;
    pinctrl-1 = <&uart7_sleep_pins_mx>;
    status = "okay";

    /* USER CODE BEGIN uart7 */
    /delete-property/dmas;
    /delete-property/dma-names;
    uart-has-rtscts;
    /* USER CODE END uart7 */
};
...
...

rfkill[edit | edit source]

For the Bluetooth driver it is necessary to add a rfkill_gpio node in the device tree:

...
...
/{
    ...
    ...
    bt_rfkill {
            compatible = "net,rfkill-gpio";
            name = "bt_rfkill";
            type = "bluetooth";
            reset-gpios = <&gpioe 7 GPIO_ACTIVE_HIGH>;
        };
    ...
    ...
};
...
...

Accessing the peripheral[edit | edit source]

rfkill[edit | edit source]

Linux messages at boot time[edit | edit source]

[    2.527639] rfkill_gpio bt_rfkill: bt_rfkill device registered.

Usage[edit | edit source]

root@desk-mp1:~# rfkill
ID TYPE      DEVICE         SOFT      HARD
 0 bluetooth bt_rfkill unblocked unblocked
 1 wlan      phy0      unblocked unblocked

So, for example, for enabling the wlan interface:

root@desk-mp1:~# rfkill unblock wlan

Wifi[edit | edit source]

Linux messages at boot time[edit | edit source]

...
[    0.567773] wlan-en-regulator: supplied by vin
...
[   12.422451] wlan: loading out-of-tree module taints kernel.
...
[   14.266062] wlan: loading driver v4.5.25.46
[   14.291737] hifDeviceInserted: Dumping clocks (50000000,99000000)
[   14.563255] [TELIT] Using WE866C6 board data. 
[   14.642957] ol_download_firmware: chip_id:0x5020001 board_id:0x0
[   14.648126] __ol_transfer_bin_file: Failed to get bdwlan30_c6.b00:-2
[   14.688736] __ol_transfer_bin_file: Trying to load default bdwlan30_c6.bin
[   14.752763] __ol_transfer_bin_file: Loading setup file qsetup30.bin
[   14.757937] __ol_transfer_bin_file: Failed to get qsetup30.bin:-2
[   15.657329] R0: wlan: [735:E :SAP] dfs_init_radar_filters[217]: Unknown dfs domain 0 
[   15.832920] Host SW:4.5.25.46, FW:0.0.0.111, HW:QCA93x7_REV1_1
[   15.848740] ENTER sme_set_btc_coex_dutycycle = 30
[   15.848777] ENTER sme_set_btc_coex_dutycycle =30
[   15.855583] ath_hif_sdio: HIF (Atheros/multi-bss)
[   15.864661] wlan: driver loaded in 1600000

Check if the wlan module are loaded:

root@desk-mp1:~# lsmod
Module                  Size  Used by
wlan                 5111808  0
galcore               528384  5
sch_fq_codel           20480  3
ip_tables              24576  0
x_tables               24576  1 ip_tables
ipv6                  507904  58

Usage with wpa_supplicant[edit | edit source]

Wireless connection using wpa_supplicant

root@desk-mp1:~# rfkill unblock wlan
root@desk-mp1:~# killall wpa_supplicant
wpa_supplicant: no process found
root@desk-mp1:~# echo network={ > /tmp/wpa_supplicant.conf
root@desk-mp1:~# echo 'ssid="ZyXEL"' >>  /tmp/wpa_supplicant.conf
root@desk-mp1:~# echo key_mgmt=NONE >> /tmp/wpa_supplicant.conf
root@desk-mp1:~# echo } >> /tmp/wpa_supplicant.conf
root@desk-mp1:~# wpa_supplicant -i wlan0 -c /tmp/wpa_supplicant.conf -B -P /tmp/wpa_supplicant.pid
Successfully initialized wpa_supplicant
root@desk-mp1:~# dmesg | tail -n 2
[ 2229.194152] DEBUGFS PEER MAC = 0xfc:0xf5:0x28:0xcc:0x3:0x90
[ 2229.312740] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
root@desk-mp1:~# ifconfig wlan0 192.168.11.89 up
root@desk-mp1:~# ping -c 5 192.168.11.243
PING 192.168.11.243 (192.168.11.243) 56(84) bytes of data.
64 bytes from 192.168.11.243: icmp_seq=1 ttl=64 time=36.9 ms
64 bytes from 192.168.11.243: icmp_seq=2 ttl=64 time=15.6 ms
64 bytes from 192.168.11.243: icmp_seq=3 ttl=64 time=13.6 ms
64 bytes from 192.168.11.243: icmp_seq=4 ttl=64 time=11.7 ms
64 bytes from 192.168.11.243: icmp_seq=5 ttl=64 time=19.6 ms

--- 192.168.11.243 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4007ms
rtt min/avg/max/mdev = 11.691/19.481/36.911/9.100 ms
root@desk-mp1:~#

It is possible to use also the iw application:

root@desk-mp1:~# iw
Usage:  iw [options] command
Options:
        --debug         enable netlink debugging
        --version       show version (5.16)
Commands:
        dev <devname> ap stop
        dev <devname> ap start
        ...

Bluetooth[edit | edit source]

Usage with hci[edit | edit source]

First of all it is required to open the serial interface to the BT device:

root@desk-mp1:~# stty -F /dev/ttySTM3 3000000 -echo -echoe crtscts

root@desk-mp1:~# hciattach /dev/ttySTM3 qca 3000000 -t120 flow

[...]

root@desk-mp1:~# hciconfig hci0 up
root@desk-mp1:~# hcitool dev
Devices:
        hci0    00:21:7E:33:1D:5C
root@desk-mp1:~# bluetoothctl
Agent registered
[CHG] Controller 00:21:7E:33:1D:5C Pairable: yes
[bluetooth]# scan on
Discovery started
[CHG] Controller 00:21:7E:33:1D:5C Discovering: yes
[NEW] Device 61:39:85:BD:57:71 61-39-85-BD-57-71
[NEW] Device D4:CA:6E:C1:0E:E8 NINA-B1-C10EE8
[CHG] Device 61:39:85:BD:57:71 RSSI: -75
[CHG] Device 61:39:85:BD:57:71 ManufacturerData Key: 0x004c
[CHG] Device 61:39:85:BD:57:71 ManufacturerData Value:
  10 05 2e 18 00 b2 00                             .......
[NEW] Device 08:97:98:34:48:2C Cat S52 Fox
[DEL] Device 61:39:85:BD:57:71 61-39-85-BD-57-71
[bluetooth]# scan off
Discovery stopped
[CHG] Device 08:97:98:34:48:2C RSSI is nil
[CHG] Device D4:CA:6E:C1:0E:E8 TxPower is nil
[CHG] Device D4:CA:6E:C1:0E:E8 RSSI is nil
[CHG] Controller 00:21:7E:33:1D:5C Discovering: no
[bluetooth]# exit
root@desk-mp1:~#

Boot via NFS[edit | edit source]

If booted via NFS with the RFS present in the supplied MVM, the wireless driver module is present but not mounted automatically, to mount the driver run the command:

root@desk-mp1:~# lsmod
Module                  Size  Used by
galcore               528384  5
sch_fq_codel           20480  2
ip_tables              24576  0
x_tables               24576  1 ip_tables
ipv6                  507904  34
root@desk-mp1:~# rfkill
ID TYPE      DEVICE         SOFT      HARD
 0 bluetooth bt_rfkill unblocked unblocked
root@desk-mp1:~# insmod /lib/modules/5.15.67-desk-mp1-l-1.0.1/extra/wlan.ko
root@desk-mp1:~# dmesg | tail -n 20
[   21.280405] dwc2 49000000.usb-otg: bound driver configfs-gadget
[   36.959153] vdda: disabling
[  209.045510] wlan: loading driver v4.5.25.46
[  209.046619] hifDeviceInserted: Dumping clocks (50000000,99000000)
[  209.261565] ol_download_firmware: chip_id:0x5020001 board_id:0x0
[  209.263430] __ol_transfer_bin_file: Failed to get bdwlan30.b00:-2
[  209.263465] __ol_transfer_bin_file: Trying to load default bdwlan30.bin
[  209.269239] Board extended Data download address: 0x0
[  209.283596] __ol_transfer_bin_file: Loading setup file qsetup30.bin
[  209.285157] __ol_transfer_bin_file: Failed to get qsetup30.bin:-2
[  209.962733] R0: wlan: [898:E :SAP] dfs_init_radar_filters[217]: Unknown dfs domain 0 
[  209.979722] Target Ready! : transmit resources : 3 size:1792, MaxMsgsPerHTCBundle = 32
[  210.119632] target uses HTT version 3.60; host uses 3.28
[  210.119676] *** Warning: host/target HTT versions are different, though compatible!
[  210.132808] DEBUGFS PEER MAC = 0x2:0x21:0x7e:0x71:0x8d:0x2
[  210.200890] Host SW:4.5.25.46, FW:0.0.0.111, HW:QCA93x7_REV1_1
[  210.227208] ENTER sme_set_btc_coex_dutycycle = 30
[  210.227248] ENTER sme_set_btc_coex_dutycycle =30
[  210.227758] ath_hif_sdio: HIF (Atheros/multi-bss)
[  210.227787] wlan: driver loaded in 1180000
root@desk-mp1:~# lsmod
Module                  Size  Used by
wlan                 5111808  0
galcore               528384  5
sch_fq_codel           20480  2
ip_tables              24576  0
x_tables               24576  1 ip_tables
ipv6                  507904  34
root@desk-mp1:~# rfkill
ID TYPE      DEVICE         SOFT      HARD
 0 bluetooth bt_rfkill unblocked unblocked
 1 wlan      phy0      unblocked unblocked

Peripheral GPIOs[edit | edit source]

In ETRA SOM there is an I2C I/O Expander: in this way, ETRA can handle several pins in different ways and most of them can be configured as GPIOs. These GPIOs are available in J11 connector.

To configure and write/read the GPIOs you need to configure the I/O expander via I2C commands.

Accessing the peripheral[edit | edit source]

Usage with I2C command[edit | edit source]

Set all GPIO on output mode, all pins low:

root@desk-mp1:~# i2cset -y 1 0x34 0x30 0xff
root@desk-mp1:~# i2cset -y 1 0x34 0x31 0xff
root@desk-mp1:~# i2cset -y 1 0x34 0x32 0x07

Set all pin to high, one by one:

root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0x01
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0x02
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0x04
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0x08
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0x10
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0x20
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0x40
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0x80
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0x01
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0x02
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0x04
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0x08
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0x10
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0x20
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0x40
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0x80
root@desk-mp1:~# i2cset -y 1 0x34 0x2c 0x01
root@desk-mp1:~# i2cset -y 1 0x34 0x2c 0x02
root@desk-mp1:~# i2cset -y 1 0x34 0x2c 0x04

Set all pin to high and set all to low one by one:

root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0xff
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0xff
root@desk-mp1:~# i2cset -y 1 0x34 0x2c 0x07

root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0xfe
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0xfd
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0xfb
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0xf7
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0xef
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0xdf
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0xbf
root@desk-mp1:~# i2cset -y 1 0x34 0x2a 0x7f
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0xfe
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0xfd
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0xfb
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0xf7
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0xef
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0xdf
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0xbf
root@desk-mp1:~# i2cset -y 1 0x34 0x2b 0x7f
root@desk-mp1:~# i2cset -y 1 0x34 0x2c 0x06
root@desk-mp1:~# i2cset -y 1 0x34 0x2c 0x05
root@desk-mp1:~# i2cset -y 1 0x34 0x2c 0x03

Set GPIO input mode, disable debounce:

root@desk-mp1:~# i2cset -y 1 0x34 0x30 0x00
root@desk-mp1:~# i2cset -y 1 0x34 0x31 0x00
root@desk-mp1:~# i2cset -y 1 0x34 0x32 0x00

root@desk-mp1:~# i2cset -y 1 0x34 0x27 0xff
root@desk-mp1:~# i2cset -y 1 0x34 0x28 0xff
root@desk-mp1:~# i2cset -y 1 0x34 0x29 0x07

Read input value:

root@desk-mp1:~# i2cget -y 1 0x34 0x16
root@desk-mp1:~# i2cget -y 1 0x34 0x17
root@desk-mp1:~# i2cget -y 1 0x34 0x18

DESK-MP1-L/pdf

Contents

History[edit | edit source]

General Information[edit | edit source]

Release Notes[edit | edit source]

DESK-MP1-L 1.0.1[edit | edit source]

Known Limitations[edit | edit source]

Downloadable binary images[edit | edit source]

DESK-MP1-L 1.0.0[edit | edit source]

Known Limitations[edit | edit source]

Downloadable binary images[edit | edit source]

Virtual Machine[edit | edit source]

Host setup[edit | edit source]

Virtual Machine updates[edit | edit source]

ConfigID and UniqueID[edit | edit source]

ConfigID[edit | edit source]

UniqueID[edit | edit source]

Customer's action[edit | edit source]

ConfigID values[edit | edit source]

Hardware implementations of the ConfigID[edit | edit source]

OTP on the SOC[edit | edit source]

OTP 1-wire memory[edit | edit source]

I2C Eeprom[edit | edit source]

NOR Flash SPI[edit | edit source]

DAVE Embedded Systems' hardware implementation[edit | edit source]

Software implementation[edit | edit source]

U-Boot[edit | edit source]

Linux[edit | edit source]

A real case example of ConfigID benefit[edit | edit source]

How to handle After Sales with Config ID[edit | edit source]

ConfigID[edit | edit source]

ETRA[edit | edit source]

Booting from NFS[edit | edit source]

net_nfs configuration[edit | edit source]

Host (Virtual Machine) configuration[edit | edit source]

Target configuration[edit | edit source]

QT5 App[edit | edit source]

Development[edit | edit source]

Synchronizing the git repositories[edit | edit source]

Instructions[edit | edit source]

Using the STM32CubeMX Configuration file[edit | edit source]

Generating the Device Tree files[edit | edit source]

Developing applications for the ARM Cortex M4[edit | edit source]

Building Boot image[edit | edit source]

Quick reference[edit | edit source]

Instructions[edit | edit source]

Building Linux[edit | edit source]

Quick reference[edit | edit source]

Instructions[edit | edit source]

Building the Yocto BSP[edit | edit source]

Quick reference[edit | edit source]

Introduction[edit | edit source]

How to build the Yocto BSP images including the U-Boot binary file, the Linux kernel image, and the target root file system image[edit | edit source]

Initialize the build environment[edit | edit source]

Running the build[edit | edit source]

Generating the SDKs[edit | edit source]

Building additional packages[edit | edit source]

How to create a bootable microSD card[edit | edit source]

Flashing the microSD card with STM32CubeProgrammer[edit | edit source]

Hello word example[edit | edit source]

Setting the cross-compiler[edit | edit source]

Running the example on the target[edit | edit source]

Asymmetric Multiprocessing (AMP) with OpenAMP[edit | edit source]

Running the OpenAMP_TTY_echo example[edit | edit source]

Deployment[edit | edit source]

Customizing the splash screen[edit | edit source]

U-Boot variables example[edit | edit source]

How to update splashscreen image[edit | edit source]

How to configure the network interfaces[edit | edit source]

Resources[edit | edit source]

Examples[edit | edit source]

systemd[edit | edit source]

Static IP address[edit | edit source]

Dynamic IP addres (DHCP)[edit | edit source]

DNS[edit | edit source]

loopback network interface[edit | edit source]

Apply configuration changes[edit | edit source]

MAC Address programming[edit | edit source]

Platform supported[edit | edit source]

Obtaining a MAC address[edit | edit source]

Configuring `apt`[edit | edit source]