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Naon Embedded Linux Kit (NELK)

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{{AppliesToNaonAppliesToNaonFamily}}{{Applies To NaonEVB-Lite}}{{Applies To NaonEVB-Mid}}
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==Introduction==
 
[[File:DELK_01.png|500px]]
 
Major software components of an [[Embedded Linux]] system are:
* bootloader
* operating system kernel
* root file system, including user-space application and libraries
* tool chain (on development host)
===What is===
 Naon Embedded Linux Kit (NELK for short) provides all the necessary stuff required to set up the developing environment to:• * build the bootloader (U-Boot bootloader)• * build and run Linux operating system on Lizard systems'''DAVE Embedded Systems''' DM814x/AM387x-based SOMs (Naon, Maya, Dido)• * build Linux applications that will run on the target.
The kit is composed by:
1. LizardEVB* hardware platform composed by Naon/Maya/Dido system-on-High/LizardEVBmodule (SOM for short), carrier board and adapters* supported carrier boards are:** [[NaonEVB-Lite host board. This board allows software developers ]]** [[NaonEVB-Mid]]to evaluate Lizard capabilities avoiding to wait * adapters for manufacturing of a custom host the NaonEVB-Mid are:** [[ADD-ON_DVI-RX]]** [[ADD-ON_KS]]board. For more details please refer to ** [[1ADD-ON_PCIe-extension]].2. * U-Boot bootloader sources3. * Linux kernel 2.6.x sources4. * Technical documentation – such hardware manuals, mechanical drawings, reference schematics, software manuals and application notesetc. The documentation related to the software issues helps the user to quickly start and configure the bootloader and the operating systemquickly by hiding most of complexity of underlying hardware.For more details about technical hardware characteristics of processor modulesNaon, please see Lizard Hardware Manual (refer to the [2])http://www.dave.All the eu/files (sources, documentation etc/naon/naon-hm.) may or may not be delivered on physical media (CDROM or USB memory stick) depending on the purchase order code. However they are always available on-line on our web sitepdf Hardware Manual]. Access to these source files is granted to registered kit ownerowners's only. 
===What is not===
The kit is not a complete Linux programming guide nor a Linux Reference Guide. Internet provides tons of information, tutorials and examples about writing applications and drivers for this operating system and how to work with it from the user's point of view (just try to type “Linux programming” in your favourite search engine for example). As the kit is heavily based on open-source community-maintained software projects, NELK does not provide exhaustive documentation for these software items but it points out where to find the information on the Internet or books. For example, for the U-Boot bootloader, the kit does not list all the commands it handles but provides the link to the on-line documentation and to the public mailing list used by its community. For novice users who have no experience at all about embedded Linux systems, reading of [[Embedded Linux|this section]] is recommended. === Introduction Support service ===Technical support is delivered through email exclusively. Only kit owners can access the support service. The addresses are:* [mailto:support-naon@dave.eu support-naon@dave.eu]* [mailto:support-maya@dave.eu support-maya@dave.eu]* [mailto:support-dido@dave.eu support-dido@dave.eu] Technical support and access to download area are lifetime for processor module buyers and one year for the other customers. === The big picture ===The heart of Naon/Maya/Dido SOMs is Texas Instruments DaVinci Digital Media Processor TMS320DM8148 (http://www.ti.com/product/tms320dm8148). From software standpoint, Texas Instruments supports this processor - and its derivatives such as Sitara AM387x http://www.ti.com/product/am3874 - through so-called Linux EZ Software Development Kit (EZSDK for short). EZSDK releases are published on a regular basis. For more details please refer to:* http://www.ti.com/tool/linuxezsdk-davinci* http://processors.wiki.ti.com/index.php/Category:EZSDKNaon Embedded Linux Kit, in turn, is directly derived from EZSDK. Hence NELK documentation often refers to EZSDK resources.
The following table shows how NELK releases are related to EZSDK releases.{| class="wikitable" !!colspan="5" | NELK version|-|Release number|1.0.0|2.0.0|3.0.0|4.0.0|4.1.1|-|Status|Obsolete|Distributed as release candidate only|Obsolete|Obsolete|Released|-|Release date|May 2012|September 2012|December 2012|April 2013|March 2014|-|'''Release notes'''|[[NELK_Release_Notes#Rel._1.0.0 | v1.0.0]]|[[NELK_Release_Notes#Rel._2.0.0 | v2.0.0]]|[[NELK_Release_Notes#Rel._3.0.0 | v3.0.0]]|[[NELK_Release_Notes#Rel._4.0.0 | v4.0.0]]|[[NELK_Release_Notes#Rel._4.1.1 | v4.1.1]]|-|SOM PCB version|Naon: CS021211A|Naon: CS021211A|Naon: CS021211A|Naon: CS021211A<br>Maya: CS133012A<br>Dido: CS204812|Naon Embedded : CS021211A<br>Maya: CS133012A<br>Dido: CS204812|-|Supported carrier boards|[[:Category:NaonEVB-Lite|NaonEVB-Lite (PCB CS051412)]]|[[:Category:NaonEVB-Lite|NaonEVB-Lite]]<br>[[:Category:NaonEVB-Mid|NaonEVB-Mid]]|[[:Category:NaonEVB-Lite|NaonEVB-Lite]]<br>[[:Category:NaonEVB-Mid|NaonEVB-Mid]]|[[:Category:NaonEVB-Lite|NaonEVB-Lite]]<br>[[:Category:NaonEVB-Mid|NaonEVB-Mid]]|[[:Category:NaonEVB-Lite|NaonEVB-Lite]]<br>[[:Category:NaonEVB-Mid|NaonEVB-Mid]]|-|U-Boot version|2010.06-nelk-0.9.0|2010.06-nelk-2.0.0|2010.06-nelk-3.0.0|2010.06-nelk-4.0.0|2010.06-nelk-4.1.1|-|Linux Kit is directly derived Linux EZ Software Development Kit version|2.6.37-nelk-1.0.0|2.6.37-nelk-2.0.0|2.6.37-nelk-3.0.0|2.6.37-nelk-4.0.0|2.6.37-nelk-4.1.1|- |Drivers|valign="top" | SPI NOR Flash (boot)<br>EEPROM<br>Keypad controller<br>Touch screen controller<br>ADC<br>EMAC0 RMII (Fast Ethernet)<br>EMAC1 RGMII (Gigabit Ethernet)<br>SD/MMC1<br>Video Output port VOUT0 (24 bit)<br>UART0 (2-wire)<br>SPI0 (boot flash)<br>I2C0<br>I2C1 (DDC HDMI)<br>I2C2<br>HDMI<br>GPIO<br>SGX 3D accelerator<br>HDVICP2 codec engine|valign="top" | SPI NOR Flash (boot)<br>EEPROM<br>Keypad controller<br>Touch screen controller<br>ADC<br>EMAC0 RMII (Fast Ethernet)<br>EMAC1 RGMII (Gigabit Ethernet)<br>SD/MMC1<br>Video output port VOUT0 (24 bit)<br>UART0 (2-wire)<br>SPI0 (boot flash)<br>I2C0<br>I2C1 (DDC HDMI)<br>I2C2<br>HDMI<br>GPIO<br>SGX 3D accelerator<br>HDVICP2 codec engine<br>Nand 8-bit<br>USB Host<br>USB OTG ([[NaonEVB-Mid]] only)<br>Video Input port VIN0 ([[NaonEVB-Mid]] only)<br>|valign="top" | SPI NOR Flash (boot)<br>EEPROM<br>Keypad controller<br>Touch screen controller<br>ADC<br>EMAC0 RMII (Fast Ethernet)<br>EMAC1 RGMII (Gigabit Ethernet)<br>SD/MMC1<br>Video output port VOUT0 (24 bit)<br>UART0 (2-wire)<br>SPI0 (boot flash)<br>I2C0<br>I2C1 (DDC HDMI)<br>I2C2<br>HDMI<br>GPIO<br>SGX 3D accelerator<br>HDVICP2 codec engine<br>Nand 8-bit<br>USB Host<br>USB OTG ([[NaonEVB-Mid]] only)<br>Video Input port VIN0 (EZSDK[[NaonEVB-Mid]] only) provided by Texas Instruments <br>Video Input port VIN1 (see additional host required)<br>SATA<br>[[NELK Power Management|Suspend to RAM]]<br>[[NELK Power Management|OPP Support]]<br>[[http:Category:DWM|DWM]] on SDIO ([[:Category:NaonEVB-Lite|NaonEVB-Lite]] only)<br>|valign="top" | SPI NOR Flash (boot)<br>EEPROM<br>Keypad controller<br>Touch screen controller<br>ADC<br>EMAC0 RMII (Fast Ethernet)<br>EMAC1 RGMII (Gigabit Ethernet)<br>SD/MMC1<br>Video output port VOUT0 (24 bit)<br>UART0 (2-wire)<br>SPI0 (boot flash)<br>I2C0<br>I2C1 (DDC HDMI)<br>I2C2<br>HDMI<br>GPIO<br>SGX 3D accelerator<br>HDVICP2 codec engine<br>Nand 8-bit<br>USB Host<br>USB OTG ([[NaonEVB-Mid]] only)<br>Video Input port VIN0 ([[NaonEVB-Mid]] only)<br>Video Input port VIN1 (additional host required)<br>SATA<br>[[NELK Power Management|Suspend to RAM]]<br>[[NELK Power Management|OPP Support]]<br>[[:Category:DWM|DWM]] on SDIO ([[:Category:NaonEVB-Lite|NaonEVB-Lite]] only)<br>Support for Maya and Dido SOMs<br>PMIC RTC (battery powered)<br>CPU info on /www.ti.comproc filesystem<br>eth0 and eth1 MAC address set on U-Boot<br>Updated Memory Map<br>CPSW mode (dual emac vs switch) selectable on u-boot<br>PCI Express (Dido)|valign="top" | SPI NOR Flash (boot)<br>EEPROM<br>Keypad controller<br>Touch screen controller<br>ADC<br>EMAC0 RMII (Fast Ethernet)<br>EMAC1 RGMII (Gigabit Ethernet)<br>SD/tool/linuxezsdkMMC1<br>Video output port VOUT0 (24 bit)<br>UART0 (2-wire)<br>SPI0 (boot flash)<br>I2C0<br>I2C1 (DDC HDMI)<br>I2C2<br>HDMI<br>GPIO<br>SGX 3D accelerator<br>HDVICP2 codec engine<br>Nand 8-bit<br>USB Host<br>USB OTG ([[NaonEVB-Mid]] only)<br>Video Input port VIN0 ([[NaonEVB-davinciMid]] only)<br>Video Input port VIN1 (additional host required)<br>SATA<br>[[NELK Power Management|Suspend to RAM]]<br>[[NELK Power Management|EZSDK TI WebsiteOPP Support]]<br>[[:Category:DWM|DWM]] and on SDIO ([[http:Category:NaonEVB-Lite|NaonEVB-Lite]] only)<br>Support for Maya and Dido SOMs<br>PMIC RTC (battery powered)<br>CPU info on //processorsproc filesystem<br>eth0 and eth1 MAC address set on U-Boot<br>Updated Memory Map<br>CPSW mode (dual emac vs switch) selectable on u-boot<br>PCI Express (Dido) |-|TI EZSDK|5.03 (December 2011)|5.04 (April 2012)|5.05.01.wiki04 (July 2012)|5.ti05.com/index02.php/Category:EZSDK00 (Dec 2012)|EZSDK in TI wiki]5.05.02.00 (Dec 2012)|}
Dave adds to the latest EZSDK the customization required to support Dave's platforms (e.g. [[:Category:Naon|Naon]])
For this reason most of '''DAVE Embeddded Systems''' adds to the documentation provided by TI itself is valid in latest EZSDK the SDK provided by us too. Anyway some customization is requiredto support '''DAVE Embeddded Systems''' platforms ([[:Category:Naon|NAON]], [[:Category:Maya|MAYA]] and [[:Category:Dido|DIDO]])
=== Overview For this reason most of the documentation provided by TI remains valid for the NELK ===development kit. However, some customization is required, in particular at bootloader and linux kernel levels.
NELK contains all the required software to develop Linux application on [[:Category:Naon|NaonNAON]] platform, [[:Category:Maya|MAYA]] and [[:Category:Dido|DIDO]] platforms:
* uU-boot Boot bootloader source code tree and pre-build built binaries* Linux kernel source code tree and pre-build built binaries* pre-build built OMX libraries (most OMX source code is under NDA from TI)* gstreamer source codetree
* sample development (huge!) root file system
* sample production (small enough to fit Naon on-board storage) root file system
* tools and utilities
 
=== Release notes ===
 
 
{{ImportantMessage|text=Please refer to [[NELK Release Notes]] for detailed NELK information related to the features and updates introduced with the latest release.}}
 
==Naon/Maya/Dido overview==
Please refer to [[:Category:Naon|NAON]], [[:Category:Maya|MAYA]], [[:Category:Dido|DIDO]] for an overview about the DM814x/AM387x-based system-on-module architecture.
 
==Quick start==
Quick start procedure depends on the carrier board you are working with. Please click on the appropriate link below:
* [[NaonEVB-Lite#Quick start|NaonEVB-Lite Quick Start]]
* [[NaonEVB-Mid#Quick start|NaonEVB-Mid Quick Start]]
 
==Developing environment==
===TI DM8148 EZSDK software organization===
Please refer to this page for an introduction of EZSDK software organization:
[[TI DM8148 EZSDK software organization]].
 
For detailed documentation on software development using the TI EZSDK, please refer to the [http://processors.wiki.ti.com/index.php/Category:EZSDK_Software_Developers_Guide EZSDK Software Developers Guide]
 
=== NELK Layout ===
 
==== NELK MMC Layout ====
 
The MMC provided with NELK is used for
* Naon/Maya/Dido MMC boot
* NELK demo root file system storage
* NELK DVDK virtual machine image
 
The MMC is divided into three partition:
* the first (FAT32) partition is used for [[Boot_sequence_(Naon)#MMC_Booting|MMC booting]]
* the second partition (ext3) is used for Naon root file system
* the third (NTFS) partition is used for:
** NELK DVDK image (including source code and pre-installed toolchain and build system)
** documentation and binary images (please refer to the readme.html file inside this partition for more information)
 
==== NELK DVDK Layout ====
 
The base directory where the NELK is installed is
 
<pre>
/home/shared/devel/dave/naon-DAA/sw/linux/sdk
</pre>
 
Here the user can find the following subdirectories:
* arm-2009q1: is where the CodeSourcery toolchain is installed
* rfs: is where the root file system is installed. Inside this directory there are two subdirectories
** nelk: this is the default (huge) root file system. Usually it's used only development environment (via NFS)
** nelk-min: this is the sample, minimal, root file system. It can be used as starting point for manually create a production root file system.
* sdk-x.xx.xx.xx: is where the EZSDK, plus the '''DAVE Embeddded Systems''' customization, is installed (e.g sdk-5.05.02.00)
** this directory is usually named ''EZSDK_INSTALL_DIR'' inside Makefile and build scripts
* Git repositories cloned from '''DAVE Embeddded Systems''' public git repositories ('''git.dave.eu''') for the following components:
** EZSDK - /home/shared/devel/dave/naon-DAA/sw/linux/sdk/sdk-x.xx.xx.xx
** Linux - /home/shared/devel/dave/naon-DAA/sw/linux/sdk/sdk-x.xx.xx.xx/board-support/linux-omap3.git
** U-Boot - /home/shared/devel/dave/naon-DAA/sw/linux/sdk/sdk-x.xx.xx.xx/board-support/u-boot-omap3-arago.git
** gstreamer_ti - /home/shared/devel/dave/naon-DAA/sw/linux/sdk/sdk-x.xx.xx.xx/component-sources/gstreamer_ti
 
The NELK git repositories can be synchronized with '''DAVE Embeddded Systems''' public git repositories using the <code>git pull</code>. Access to '''DAVE Embeddded Systems''' public git repositories will be granted to users who will send a RSA ssh key, as described in [[How_to_update_NELK#RSA_key_generation | this guide]].
 
==== NELK Update package ====
 
For customers who have already installed the full DVDK, an update package can be used to upgrade to the most recent NELK version. The compressed archive (nelk-x.y.x.tar.bz2) contains:
 
* The new SDK release (sdk-x.xx.xx.xx)
* The new root file system (e.g.: rfs/nelk-x.xx.xx.x-sdk
* A symbolic link (''rfs/nelk'') to the new root file system
 
For the complete procedure for NELK updating, please refer to [[How to update NELK]]
=== HowTo Build ===
Generally speaking, if you are using [[:Category:DVDK|Dave '''DAVE Embeddded Systems''' Virtual Development Kit]] building the whole kit is a matter of:
# startup and login into the virtual machine
# enter the right ''EZSDK_INSTALL_DIR'' directory# execute launch build and install commands The <code>make all && </code> command builds all the components of the development kit (e.g. [[:Category:U-Boot|U-Boot binaries]], [[:Category:Linux|Linux kernel]], custom libraries and utilities) while the <code>sudo -E make install</code>command installs them into the root file system For a more detailed explanation of the Development Environment, please refer to [[Development Environment HowTo (NELK)]]
The <code>make all</code> command will build all the components of the development kit (e.g. ==Use cases==Please refer to [[:Category:U-Boot|U-Boot binariesUses cases with Naon Embedded Linux Kit]], . See also [[:Category:Linux|Linux kernelNELK Power Management]], custom libraries and utilities) and install them into the root file systemfor a detailed description on how power management is implemented in NELK.
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