Changes

|{{oldid|7256|2.3.1}}

|{{oldid|7341|3.0.01}}

|[[Axel_Embedded_Linux_Kit_(XELK)#XELK_3.0.0|XELK 3.0.1]]|XELK 3.0.1||-|4.0.0|Aug 2019|[[Axel_Embedded_Linux_Kit_(XELK)#XELK_4.0.0|XELK 4.0.0]]|XELK 34.0.0

This document has been written and tested with the software/hardware combination described in the history table above. However it contains general concept that can be adapted on any DAVE Embedded Systems' Linux platformusing the SPL.

We'll explain how to program and configure a [[Category: AxelLite|Axel Lite]] to boot in standalone mode, without the need of a system microSD card or a NFS server, with two options:

Update In order to support the latest u-boot version allows usage of u-boot environment SPL, new additional uboot variables availablehave been introduced.

U=> print load_spl load_uboot spi_update_spl spi_update_ubootload_spl=tftp ${loadaddr} ${spl}load_uboot=tftp ${loaddr} ${ubootimg}spi_update_spl=sf probe; sf erase 0 10000;sf write ${loadaddr} 400 ${filesize}spi_update_uboot=sf probe; sf erase 10000 f0000;sf write ${loadaddr} 10000 ${filesize}</pre> === u-Boot boot on NOR SPI ===Uboot can be flashed into NOR following the example below. Firstly, the SPL is fetched from the tftpserver and then it is flashed into the NOR SPL partition. Lastly, the same operation is performed for the uboot image.<pre>=> run loadload_spl

TFTP from server 192.168.0.1389; our IP address is 192.168.0.9883Filename 'axel/uxelk-boot4.0.0_mx6qdlaxel_spi_SPL'.Load address: 0x12000000Loading: ############ 335 KiB/sdoneBytes transferred = 56320 (dc00 hex)=> run spi_update_spl SF: Detected s25fl256s_64k with page size 256 Bytes, erase size 64 KiB, total 32 MiBSF: 65536 bytes @ 0x0 Erased: OKdevice 0 offset 0x400, size 0xdc00SF: 56320 bytes @ 0x400 Written: OK=> run load_uboot Using FEC deviceTFTP from server 192.168.0.89; our IP address is 192.168.0.83Filename 'axel/xelk-24.30.4_mx6qaxel_spi_u0_mx6qdlaxel_spi_u-boot.imximg'.

############################################## 1.5 2 MiB/s

Bytes transferred = 566184 493272 (8a3a8 786d8 hex)U-Boot => run spi_updatespi_update_uboot SF: Detected S25FL256S s25fl256s_64k with page size 256 Bytes, erase size 64 KiB, total 32 MiBU-Boot ></pre> === u-boot on NOR SPI === Be sure the ''spi_update'' commands has enough erase and program size definedSF: 983040 bytes @ 0x10000 Erased:OK <pre>U-Boot > setenv spi_update 'sf probe; sf erase device 0 90000;sf write ${loadaddr} 400 90000'offset 0x10000, size 0x786d8</pre> Then update u-boot on NORSF: <pre class="board-terminal">U-Boot > run spi_updateSF493272 bytes @ 0x10000 Written: Detected S25FL256S with page size 64 KiB, total 32 MiBU-Boot >OK

The SPL and u-boot image, must be flashed on NAND flash must be programmed using the NXP <code>kobs-ng</code> utility: this . This tool is required for writing the correct u-boot image on NAND storing all information needed by bootrom to identify the NAND as a boot device.

Here below an exampleThe following steps are therefore necessary:

* copy the related u-boot imx image file ans SPL files on nfs /home/root (for example)* execute kobs-ng passing the parameters for flashing u-boot the SPL on NAND.* execute nandwrite to flash uboot image on NAND.

root@axel-liteimx6dlxelk:~# kobs-ng -x -v -w xelk-24.3.4_mx6dlaxel_nand_u-boot0.imx0_mx6qdlaxel_nand_SPL

column_address_size column_a[ 171.755580] nand: nand_erase_nand: attempt to erase a bad block at page 0x00000000ddress_size = 2

ECC Strength : 82 Page Size in Bytes : 21122071

Block Mark Byte Offset : 19992028 Block Mark Bit Offset : 02

mtd: max_boot_stream_size_in_bytes = 3670016524288mtd: boot_stream_size_in_bytes = 56412849152mtd: boot_stream_size_in_pages = 27624mtd: #1 0x00100000 - 0x00480000 0x00180000 (0x00189ba00x0010c000)mtd: #2 0x00480000 0x00180000 - 0x00800000 0x00200000 (0x00509ba00x0018c000)

m_u32EccBlockNEccType = 41

m_u32EccBlock0EccType = 41

m_u32Firmware2_startingPage = 2304768 m_u32PagesInFirmware1 = 27624 m_u32PagesInFirmware2 = 27624

m_u32BadBlockMarkerByte = 19992028 m_u32BadBlockMarkerStartBit = 02

Firmware: image #0 @ 0x100000 size 0x8a000 0xc000 - available 0x3800000x80000Firmware: image #1 @ 0x480000 0x180000 size 0x8a000 0xc000 - available 0x3800000x80000

mtd: Writing FCB0 [ @device 0fails MEMERASE (0x0 - 0x20000)mtd:Failed to erase block @0x0 ] (840) *

mtd_commit_bcb(FCB): status 01

mtd: Writting .tmp_kobs_ng: #0 @0: 0x00100000 - 0x0018a0000x0010c000

mtd: erasing @0:0x120000-0x140000We write one page for save guard. *mtd: erasing @0:0x140000-0x160000mtdWritting .tmp_kobs_ng: erasing #1 @0:0x1600000x00180000 -0x1800000x0018c000

mtd: Writting .tmp_kobs_ngroot@imx6qxelk: ~#1 @flash_erase /dev/mtd1 0 0: 0x00480000 - 0x0050a000mtd: erasing Erasing 128 Kibyte @0:0x4800005e0000 --0x4a0000100 % complete mtd: erasing root@0imx6dlxelk:0x4a0000~# nandwrite -0x4c0000mtd: erasing @0:0x4c0000p /dev/mtd1 xelk-0x4e0000mtd: erasing @4.0:0x4e0000.0_mx6qdlaxel_nand_u-0x500000boot.imgmtd: erasing @Writing data to block 0:0x500000-0x520000at offset 0x0mtd: The last page is not full : 928Writing data to block 1 at offset 0x20000mtd: We write one page for save guard. *Writing data to block 2 at offset 0x40000root@axel-lite:~#Writing data to block 3 at offset 0x60000

root@axel-liteimx6dlxelk:~# cat /proc/mtd

mtd0: 00800000 00200000 00020000 "nand-SPL"mtd1: 00600000 00020000 "nand-uboot"mtd1mtd2: 00100000 00020000 "nand-env1"mtd2mtd3: 00100000 00020000 "nand-env2"mtd3mtd4: 00100000 00020000 "nand-fdt"mtd4mtd5: 00100000 00020000 "nand-spare"mtd5mtd6: 00800000 00020000 "nand-kernel"mtd6mtd7: 00400000 00020000 "nand-splash"mtd7mtd8: 1e800000 00020000 "nand-ubi"mtd8mtd9: 00010000 00010000 "spi-SPL"mtd10: 00100000 000f0000 00010000 "spi-uboot"mtd9mtd11: 00040000 00010000 "spi-env1"mtd10mtd12: 00040000 00010000 "spi-env2"mtd11mtd13: 00080000 00010000 "spi-dtb"mtd12mtd14: 00600000 00800000 00010000 "spi-kernel"mtd13mtd15: 00400000 00010000 "spi-splash"mtd14mtd16: 01400000 01200000 00010000 "spi-free"root@axel-lite:~#

* Format and initialize ''nand-ubi'' partition, which in our case is <code>mtd7mtd8</code>, using [[Memory Tecnology Device (MTD)#UBI|UBI]] with:

ubiformat /dev/mtd7mtd8ubiattach -m 78

root@axel-lite:~# ubiformat /dev/mtd7mtd8ubiformat: mtd7 mtd8 (nand), size 511705088 bytes (488.0 MiB), 3904 eraseblocks of 131072 bytes (128.0 KiB), min. I/O size 2048 bytes

root@axel-lite:~# ubiattach -m 78[ 517.999286] UBI: attaching mtd7 mtd8 to ubi0

[ 524.498833] UBI: attached mtd7 mtd8 (name "nand-ubi", size 488 MiB) to ubi0

tar xvjf xelk-24.20.0_axel-fsl-image-qt5-xelk-l.tar.bz2 -C /mnt/nand

ubidetach -m 78

root@axel-lite:~# ubidetach -m 78[ 575.171074] UBI: detaching mtd7 mtd8 from ubi0[ 575.182401] UBI: mtd7 mtd8 is detached from ubi0

nand_args=setenv bootargs ubi.mtd=7 8 root=ubi0_0 rootfstype=ubifs rw

U-Boot => sf probe; run loadk spi_updatek loadfdt spi_updatefdtSF: Detected S25FL256S s25fl256s_64k with page size 256 Bytes, erase size 64 KiB, total 32 MiB

TFTP from server 192.168.0.1389; our IP address is 192.168.0.9883Filename 'axel/linux/xelk-24.30.1_uImage0_uImage'.

################################################################# ################################################################# ################################################################# ### 1.6 3 MiB/s

Bytes transferred = 5887704 6668104 (59d6d8 65bf48 hex)SF: 8388608 bytes @ 0x200000 Erased: OKdevice 0 offset 0x200000, size 0x65bf48SF: 6668104 bytes @ 0x200000 Written: OK

TFTP from server 192.168.0.1389; our IP address is 192.168.0.9883Filename 'axel/linux/xelk-24.30.1_imx6q-xelk0_imx6q-lsbcx-2.0.0cb0012.dtbdtb_wl'.

Loading: ########### 1604.2 MiB5 KiB/s

Bytes transferred = 46326 51400 (b4f6 c8c8 hex)U-Boot >SF: 524288 bytes @ 0x180000 Erased: OKdevice 0 offset 0x180000, size 0xc8c8SF: 51400 bytes @ 0x180000 Written: OK </pre>

U-Boot => setenv bootcmd run spi_nandU-Boot => saveenv

U-Boot => run loadk nand_updatek loadfdt nand_updatefdt

TFTP from server 192.168.0.1389; our IP address is 192.168.0.9883Filename 'axel/linux/xelk-24.30.1_uImage0_uImage'.

################################################################# ################################################################# ################################################################# ### 1.6 2 MiB/s

Bytes transferred = 5887704 6668104 (59d6d8 65bf48 hex)

size adjusted to 0x7e0000 (1 bad blocks)Skipping bad block at 0x00d600000x00d00000 Erasing at 0x13c0000 0x13e0000 -- 100% complete.

NAND write: device 0 offset 0xc00000, size 0x59d6d80x65bf48Skip bad block 0x00d600000x00d00000 5887704 6668104 bytes written: OK

TFTP from server 192.168.0.1389; our IP address is 192.168.0.9883Filename 'axel/linux/xelk-24.30.1_imx6q-xelk0_imx6q-lsbcx-2.0.0cb0012.dtb'.

Loading: ########### 1726.3 MiB6 KiB/s

Bytes transferred = 46326 51400 (b4f6 c8c8 hex)

NAND write: device 0 offset 0xa00000, size 0xb4f60xc8c8 46326 51400 bytes written: OKU-Boot =>

U-Boot => setenv bootcmd run nand_nandU-Boot => saveenv