Changes

= Summary<br><br> =X-Loader, an initial program loader for Embedded boards based on OMAP processors.

XAccess to the latest version&nbsp;[http://git.isee.biz/?p=pub/scm/igep-x-loader.git;a=summary here] and read the [http://git.isee.biz/?p=pub/scm/igep-x-Loader, an initial program loader .git;a=blob_plain;f=ISEE_README.txt;h=909c072bc2512026342d802b3ef1b7e8f703458b;hb=4bb2ebd99d5b86522d786ac5b074066e9841799c ISEE_Readme.txt] for Embedded boards based on OMAP processorsget the latest release information. <br>

Access to the latest version (release 2.4.0-2)&nbsp;[http://git.igep.es/?p=pub/scm/igepWhy IGEP-x-loader.git;a=summary here] and read the [http://git.igep.es/?p=pub/scm/igep-x-loader.git;a=blob;f=ISEE_README.txt;h=99a9a0e13bf165307f35b260b076ae4df5ad9b1d;hbXloader=HEAD ISEE_Readme.txt] Some important reasons exist for get the latest release informationusing this bootloader on IGEP boards.

= Why =Security==This is one of the most important reasons why we develop this new IGEPX-Xloader =loader. you will Probably know that flash devices get new bad memory blocks with normal usage that can make unusable or can damange the software residing inside the flash (ex: upgrading the software, copying a new kernel ... ), in these cases your board won't be usable anymore if you don't use a right nand filesystem that insures data integrity. Using the old schema we've 4 important partitions on flash without any protection, x-loader, u-boot, u-boot enviroment and kernel.

Exist some important reasons for use IGEP X-loader resolves this bootloader on IGEP boardssituation as the configuration and kernel files reside inside a jffs2 partition.

== Security Maintenance==With the old schema 3 different software existed (x-loader, u-boot, kernel) that did exactly the same job, so you had to reconfigure the board, increasing the complexity of maintenance for the board system and provide a major bug source because we had to assure that all software was aligned with all changes. Also, from a second point of view, we did the job three times so the boot process was more complex and slow.

This is one of the most important reasons why we develop ==Easy to use==With this new IGEP X-loader. Probably approach use the software it's more easy to use, if you knows that in 've the flash devices with the normal usage get new bad memory blocks that be unusable or boot information stored inside a jffs2 partition you can damange use the software that resides inside linux kernel to access it directly without the use of any flash tool to modify the software (ex: upgrading the software, copy a new kernel ... ), in these cases your board cannot be usable anymore if you donusing nandwrite it't use a right nand filesystem that insure the s to risky due to its inability to guarantee data integrity. Using over the old schema we've 4 importat partitions on flash without any protection, x-loader, u-boot, u-boot enviroment and kernelNand Flash memory).

IGEP X-loader resolve this situation due ==Upgrade faster and easy==Upgradint to a new kernel it's easier and faster, you only need to copy the configuration and new kernel files resides inside a jffs2 the boot partition, copy your new igep.ini inside and reboot the board with all security.

=Features and Limitations= Mantenience ==Improvements &amp; Modifications==* Added malloc/free functionality.* Added mtd framework and onenand support, removed the old onenand drivers.* Added fs jffs2 support using mtd &amp; onenand support (Read Only).* Added crc32 and zlib.* Jffs2 zlib compression support (Read Only).* Dual boot mmc &amp; onenand with mmc highest priority.* Added Linux kernel boot directly (Support for 2.6.22 and highest version kernels)* Linux kernel supported images: vmlinuz, bzImage and zImage.* Support for loading Linux Ram disk (EXPERIMENTAL)* Added "ini" files parser.* The configuration resides in a plain txt (ini format file).* Support Windows &amp; Linux formating ini files.* boot from mmc, onenand, or mix with mmc highest priority.* Added codeblocks project and compilation rules.* Added support for vfat32 extra names.* Configure TPS65950 voltage to 1.35V if it's used a DM3730 processor.* Added new parameter MachineID in kernel tag file, with it you can* &nbsp;&nbsp;&nbsp; - configure the kernel board ID setup* Added new parameter buddy for kernels 2.6.35.y and 2.6.37.y* Optimize some LPDDR Memory configuration values* Removed some OneNand Debug information* Removed some FAT incorrect warnings* Added Support Initial Ram disk* Reconfigure Makefile options* Support Kernels 2.6.35, 2.6.37, 3.6.4* Added support for boot ARM binary files (such u-boot or QNX kernel)* Support for Numonyx, Micron and hynix POP Memories.* Memory autodetection.* Added GPTimer functionality.* Support Numonyx, Micron and hynix memories.* DMA Copy support* Omtimized memcpy and memset functions.* DSS Video driver.* Support ISEE toolchain yocto 1.2 based.

With the old schema exist 3 different software (x-loader, u-boot, kernel) that do exactly the same job ==Limitations==* The ini configuration file it means reconfigure the board, 's limited to max size: 16 KiB* Kernel Command line parameters it increas the complexity of mantenience for the board system and provide a major bug source due we must insure that all software must be aligned with all changes, 's limited to: 4 KiB* Malloc it has a second point of view if we do the job three times the boot process be more complex and slow's hardcode limited to 32 MiB.* Video is limited to 1024 x 768 x 16 bits.* Video Memory is limited to 1280 x 720 x 32 bits.

== Easy to use TODO==* Remove compilation warnings.* System Rescue.* Improve boot selection and priority.* Remove unused code.

With this new approach use the software it's more easy, if you've the boot information stored inside a jffs2 partition you can use the linux kernel for access to it directly without use any flash tool for modify the software (ex==STATUS==* Support: use nandwrite it's to risky due it cannot garanty the data integrity over the Nand Flash memory). ** IGEPv2 DM3730** IGEPv2 OMAP3530** IGEP COM MODULE DM3730** IGEP COM PROTON DM3730** IGEP COM MODULE AM3703

== Upgrade faster and easy VERSION CHANGES==[2.1.0-1] This version only can be build with gcc linaro 4.5.2 other compilers be not supported.

Upgrade a new kernel it's more easy and faster, you only need copy the new kernel inside the boot partition and copy your new igep[2.ini inside and reboot the board 1.0-1] Removed some uncontrolled "printf" with all securityincorrect information.

*Added malloc/free functionality. *Added mtd framework and onenand support, removed the old onenand drivers. *Added fs jffs2 support using mtd &amp; onenand support (Read Only). *Added crc32 and zlib. *Jffs2 zlib compression support (Read Only). *Dual boot mmc &amp; onenand with mmc highest priority. *Added Linux kernel boot directly (Support for [2.6.22 and highest version kernels) *Linux kernel supported images: vmlinuz, bzImage and zImage. *Support for loading Linux Ram disk (EXPERIMENTAL) *Added "ini" files parser. *The configuration resides in a plain txt (ini format file). *Support Windows &amp; Linux formating ini files. *boot from mmc, onenand, or mix with mmc highest priority. *Added codeblocks project and compilation rules. *Added support for vfat32 extra names. *Configure TPS65950 voltage to 1.35V if it's used a DM3730 processor. *Added new parameter MachineID in kernel tag file, with it you can<br> *&nbsp;&nbsp;&nbsp; 0- configure the kernel board ID setup *1] Added new parameter buddy for kernels 2.6.35.13-3 *Optimize some LPDDR Memory configuration values *Removed some OneNand Debug information *Removed some FAT incorrect warnings *Only support gcc 4.5.2 linaro version *Added Support Initial Ram disk *Reconfigure Makefile options *Support Kernels 2.6.35 and 2.6.37<br> *Added support for boot ARM binary files (such u-boot or QNX kernel) *Support for Numonyx, Micron and hynix POP Memories. *Memory autodetection. *This software only can be compiled with gcc 4.5 *Added GPTimer functionality.IGEP Module 0030

== TODO<br> ==[2.1.0-2] ARM Compilation bug resolved ----

*Remove compilation warnings[2.<br> *System Rescue1.0-3] Update SDRAM structure initialization

*Support all IGEP boards[2.1.0-3] Updated Initial RAM disk destination address

[2.12.0-1] This version only can be build with gcc linaro 4.5.2 other compilers be not supported.<br> Update Makefile structure

[2.12.0-1] Removed some uncontrolled "printf" with incorrect information.<br> Downgrade the boot processor speed

[2.1.0-1] Modified some code under __DEBUG__ option.<br> ---

[2.13.0-1] Added Support for TPS65950-A3 initialization at 1.35V<br> Add NAND flash devices and Micron MT29CXGXXMAXX memories support

[2.13.0-12] Added Add Hynix NAND memorie and IGEP0032 support for IGEP Module 0030<br>

[2.13.0-12] Added support dynamic Machine ID selection (same xloader boot IGEPv2 &amp; IGEP Module)<br> lzo compression schema.

[2.13.0-3] Add Support for execute ARM binaries [2.3.0-3] ARM Compilation bug resolved<br> Bug Fixes related to I and D Cache

[2.4.0-1] Added Memory test feature [2.4.0-1] Added some boot information [2.4.0-31] Update SDRAM structure initialization<br> New read_nand_cache function optimized for load from NAND

[2.14.0-31] Added support for Initial RAM disk<br> BUG resolved: Refresh Setup in Micron &amp; Hynix Memories

[2.4.0-1] BUG resolved: Reset Memory controller after initialize Malloc function [2.4.0-31] Updated Initial RAM disk destination address BUG resolved: Resolve problems updating the flash content under jffs2

[2.4.0-2] Resolved Memory Autodetection [2.4.0-2] Better hang board led control [2.4.0-12] Update Makefile structure New read_nand_cache function optimized for load from OneNand

[2.24.0-12] Downgrade the boot processor speed<br> Added Hw GPtimer functionality

[2.35.0-1] Add NAND flash devices and Micron MT29CXGXXMAXX memories support Added System DMA driver.

[2.35.0-21] Add Hynix NAND memorie and IGEP0032 support Added optimized memcpy &amp; memset functions.

[2.35.0-1] Improved boot speed. [2.5.0-1] Improve NAND driver support. [2.5.0-1] Auto x-loader.bin.ift and MLO generation. [2.5.0-1] Added lzo compression schemaDSS video support.

[2.35.0-32] Add Support for execute ARM binaries [2.3Fixed System DMA misconfiguration.0-3] Bug Fixes related to I and D Cache

[2.5.0----2] Improve GPMC timming setup.

[2.45.0-12] Added Memory test feature DSS igep.ini variables.

[2.45.0-12] Added some boot information Support for new memory capacities.

[2.45.0-12] New read_nand_cache function optimized for load from NAND Auto x-loader.bin.ift and MLO generation.

[2.45.0-12] BUG resolved: Refresh Setup in Micron &amp; Hynix Memories Minor bug fixes.

[2.4.0-1] BUG resolved: Reset Memory controller after initialize Malloc function ---

[2.45.0-13] BUG resolvedplatform.S: Resolve problems updating the flash content under jffs2 downgrade MPU boot clock from 1GHz to 800 MHz

[2.46.0-1] Remove OMAP35xx support [2.6.0-1] Resolved Memory Autodetection New DMA driver, now can handle different DMA channels and transfers

[2.46.0-21] Better hang board led control GPMC: Add support for use prefetch engine

[2.46.0-21] New read_nand_cache function optimized for load from OneNand NAND: Added a new Nand driver

[2.46.0-21] Added Hw GPtimer functionality NAND: Modify memory setup timmings

= Pre-Compiled Binaries =---

[2.6.0-2] DMA: disable dma_memcpy function due random kernel memory corruption =Pre-Compiled Binaries={| cellspacing="1" cellpaddingborder="1" width="905" bordercellspacing="1" stylecellpadding="1"

! scope="col" | Release ! scope="col" | Download link ! scope="col" | Support

|| 2.46.0-2 || [http://downloads.isee.biz/pub/releases/IGEP_xloader/igep-x-loader-2.46.0-2.tar.bz2 igep-x-loader-2.46.0-2.tar.bz2] | All |[[The_IGEP_X-loader#STATUS | DM3730 Boards]]

|| 2.15.0-2 || [http://downloads.isee.biz/pub/releases/IGEP_xloader/igep-x-loader-2.15.0-2.tar.bz2 igep-x-loader-2.15.0-2.tar.bz2] ||[[The_IGEP_X-loader#STATUS | All OMAP3 Boards]]

|| 2.14.0-3 2|| [http://downloads.isee.biz/pub/releases/IGEP_xloader/igep-x-loader-2.14.0-32.tar.bz2 igep-x-loader-2.14.0-32.tar.bz2] ||[[The_IGEP_X-loader#STATUS | All OMAP3 Boards]] except IGEP COM MODULE AM3703

| |2.1.0-2||[http://downloads.isee.biz/pub/releases/IGEP_xloader/igep-x-loader-2.1.0-2.tar.bz2 igep-x-loader-2.1.0-2.tar.bz2]||[[The_IGEP_X-loader#STATUS | All OMAP3 Boards]] except IGEP COM MODULE AM3703|-||2.1 .0-3||[http://downloads.isee.biz/pub/releases/IGEP_xloader/igep-x-loader-2.1.0-3.tar.bz2 igep-x-loader-2.1.0-3.tar.bz2]||[[The_IGEP_X-loader#STATUS | All OMAP3 Boards]] except IGEP COM MODULE AM3703|-||2.2.0-1|| [http://downloads.isee.biz/pub/releases/IGEP_xloader/igep-x-loader-2.2.0-1.tar.bz2 igep-x-loader-2.2.0-1.tar.bz2] ||[[The_IGEP_X-loader#STATUS | All OMAP3 Boards]] except IGEP COM MODULE AM3703

= Build Procedure<br> ===Build with ISEE SDK Yocto Toolchain 1.2=====Download and Install the cross compiler if you not do it before.===Download the toolchain from this [https://www.isee.biz/support/downloads/item/igep-sdk-yocto-toolchain-1-2-2-3 link] and uncompress it as root in your / directory.

=== Install the cross compiler if you not do it beforesource /opt/poky/1.2/environment-setup-armv7a-vfp-neon-poky-linux-gnueabi<br/pre> ===

<span style="font-style: italic;"><span style="font-weight: bold;">Enviroment </span></span>'''''Ubuntu 10.10''''' <pre>sudo apt-get install cpp-4.5-arm-linux-gnueabi g++-4.5-arm-linux-gnueabi</pre> <span style="font-style: italic;"><span style="font-weight: bold;">Enviroment </span></span>'''''Ubuntu 10.04''''' <pre>sudo add-apt-repository ppa:linaro-maintainers/toolchain</pre> <pre>sudo apt-get install cpp-4.5-arm-linux-gnueabi g++-4.5-arm-linux-gnueabi</pre> === Download the sources from our git repository ===<pre>$ git clone git://git.isee.biz/pub/scm/igep-x-loader.git

$ ===Get your desired tag / release===git checkout &lt;your_desired_release&gt; -b &lt;your_name_release&gt;<br> <pre>$ git checkout release-2.45.0-2 -b release-2.45.0-2-local

===Setup the board build setup===<pre>make igep00x0_config</pre>===Build the software===<pre>make</pre>===Sign the binary x-loader (Only versions prior to 2.5.0-x)===''You should execute contrib/signGP for sign the xloader.''  

</pre>  == Build Native =====Download from git repository=== git clone https://git.isee.biz/arm-boot/igep-x-loader.git git checkout &lt;your_desired_release&gt; -b &lt;your_name_release&gt; <pre style=="font-weight: normal;"> git checkout release-2.5.0-2 -b release-2.5.0-2-local</pre>

=== Configure the board settings<br> ===<pre>make igep00x0_config</pre><pre>Edit the variable CFLAGS and add the option: -fno-stack-protectorCFLAGS&nbsp;:= $(CPPFLAGS) -Wall -Wstrict-prototypes -fno-stack-protector</pre> === Build<br> ===<pre>make CROSS_COMPILE=arm-none-linux-gnueabi-</pre> === Sign the binary x-loader ===''You should execute contrib/signGP for sign the xloader.''

</pre> = BOOT<br> = The IGEP X-Loader must reside in the microSD card or in the Nand Memory.<br>  == MMC Boot == === Prepare the microsd card ===

==MMC Boot=====Prepare the microsd card===You can follow this howto about how [http://code.google.com/p/beagleboard/wiki/LinuxBootDiskFormat prepare the microsd card] or [[How to boot from MicroSD Card]]<br>

Get a new microsd card and create two partitions, the first one must be fat16/32 and the second one can be formated in any format type supported by linux kernel.<br>

=== Copy the files in the first (FAT) partition ===In the first partition you must copy in this order:

In the first partition # x-loader.bin.ift (you must rename this file to MLO before copy in this orderit) / This is a signed image using contrib/signGP tool# x-loader configuration file [http://git.igep.es/?p=pub/scm/igep-x-loader.git;a=blob;f=scripts/igep.ini;h=ce093fe80c81d8888bf79464f847059b312bba83;hb=HEAD igep.ini]&nbsp;also you can change the configuration file name editing the file:&nbsp;[http: //git.igep.es/?p=pub/scm/igep-x-loader.git;a=blob;f=include/configs/igep00x0.h igep00x0.h]&nbsp;(#define IGEP_BOOT_CFG_INI_FILE "igep.ini")# Your desired kernel image.

#x-loader.bin.ift (you must rename this file to MLO before copy it) / This is a signed image using contrib/signGP tool #x-loader configuration file [httpLoad Order://git.igep.es/?p=pub/scm/igep-x-loader.git;a=blob;f=scripts/igep.ini;h=7ecda91b2716d8984d48fa6c5eb5c74b8f0b0959;hb=HEAD igep.ini]&nbsp;also you can change the configuration file name editing the file:&nbsp;[http://git.igep.es/?p=pub/scm/igep-x-loader.git;a=blob;f=include/configs/igep00x0.h igep00x0.h]&nbsp;(#define IGEP_BOOT_CFG_INI_FILE "igep.ini") #Your desired kernel image.

</pre> Don't use a uImage kernel format (from uboot), only standard kernel formats be supported.  '''kernel build command example''':

'''kernel build command example''': <pre>$make ARCH=arm CROSS_COMPILE=arm-poky-linux-gnueabi- zImage modules</pre> === Second Partition ===

===Second Partition===Copy all your rootfs in this second partition.

Also you can use the [http://releases.linaro.org/platform/linaro-m/headless/final/linaro-m-headless-tar-20101108-2.tar.gz linaro 10.11 minimal image]&nbsp;download the image and untar (as root) in your microsd card second partition.

Remember install the kernel modules in this partition.

Example: <pre>sudo make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules_install INSTALL_MOD_PATH=[path to your target rootfs]</pre> == Nand Boot ==

<pre>sudo make ARCH=arm CROSS_COMPILE=arm-poky-linux-gnueabi- modules_install INSTALL_MOD_PATH=[path to your target rootfs]</pre> ==Nand Boot===== Nand Partitions<br> ===We've defined 3 partitions on the Nand Memory.

</pre> ==== X-Loader Partition ====* Not fs formated (onenand raw)* Size: 0x80000 (512 KiB)* The xloader must be signed before copy it into the flash memory.

*Not fs formated (onenand raw) *Size: 0x80000 You should copy the x-loader in the firsts 4 blocks (first 512 KiB) *The xloader must be signed before , this is not a&nbsp;formated partition due the ROM not permits boot from a formated partition in flash, you should use flash_eraseall and [http://git.isee.biz/?p=pub/scm/writeloader.git;a=summary writeloader] for copy it into x-loader in the flash memoryfirst blocks.

$nand_eraseall flash_eraseall /dev/mtd0$writeloader -i &lt;x-loader.bin.ift&gt; -o /dev/mtd0</pre> ==== <span id="1299156619608S" style="display: none;">&nbsp;</span>Boot Partition ====* filesystem used jffs2 zlib/lzo compressed filesystem.* Suggested size: 0xC00000 (12 MiB). X-Loader only support jffs2 partitions for boot partition.

*filesystem used jffs2 zlib<u>Create the boot partition:</lzo compressed filesystem. *Suggested size: 0xC00000 (12 MiB).u>

$flash_eraseall /dev/mtd1

$mount -t jffs2 /dev/mtdblock1 /mnt</pre> <u>Next uses:</u>

<u></u>You can mount the partition over your boot directory in the rootfs <pre>$mount -t jffs2 /dev/mtdblock1 /boot</pre> You can use the cp command for copy your kernel and igep.ini configuration file. <pre>$cp igep.ini /boot$cp zImage /boot</pre> ==== Rootfs Partition ====

*fs (your prefered fs supported by linux, maybe a good choice it should be ubifs) <pre>mount -t jffs2 /dev/mtdblock1 /boot</pre>*Size, all or you You can create more partitions if you wish .use the cp command for copy your kernel and igep.ini configuration file.&nbsp;:)

<pre>cp igep.ini /bootcp zImage /boot</pre>== Boot Priority ==Rootfs Partition====* fs (your prefered fs supported by linux, maybe a good choice it should be ubifs)* Size, all or you can create more partitions if you wish ...&nbsp;:)

==Boot Priority==XLoader first try load from mmc and if it fails then try from OneNand.<br>

'''MLO (x-loader), igep.ini, zImage from MMC'''<br/>If all it's present in the mmc it don't try to boot from Onenand.<br>

'''MLO (x-loader) in MMC, igep.ini and zImage in Onenand.'''<br/>If only MLO it's provided this one try to load the other information from&nbsp;the Onenand.

It means that XLoader always try to load the information from MMC and if it fails then try to load from OneNand.

== Configuration file: igep.ini ==[http://en.wikipedia.org/wiki/INI_file This entry in wikipedia] can help you how a ini file it's structured.

Inside the sources/scripts directory you can found a [http://engit.wikipediaisee.orgbiz/?p=pub/wikiscm/INI_file This entry in wikipedia] can help you how igep-x-loader.git;a =blob;f=scripts/igep.ini;h=ce093fe80c81d8888bf79464f847059b312bba83;hb=refs/heads/master igep.ini ] example file it's structured.

Inside the sources/scripts directory you The actual XLoader can found a [httphandle two kind tags://git.igep.es/?p=pub/scm/igep-x-loader.git;a=blob;f=scripts/igep.ini;h=4127b005e8ac1763804d709416a52cc6d850768e;hb=refs/heads/master igep.ini] example file.

The actual [kernel] Used for internal XLoader can handle two kind tags: setup.

[kernelkparams] Used for internal XLoader setuppass the linux kernel parameters.<br>

[kparams] Used for pass the linux kernel parameters.  === TAG: [kernel]&nbsp; ===

9 MachineID=xxxx Where Machine ID =&nbsp;2344 for IGEPv2 and , ID = 2717 for IGEP COM Module, ID = 3203 for IGEP COM PROTON 10 Mode=&lt;kernel&gt; or &lt;binary&gt; 11 dss=&lt;0 or 1&gt; Enable or Disable Video Output 12 dss_color=&lt;0x00FF8000&gt; Write your desired color in hex value 13 dss_bitmap=&lt;filename&gt; Raw display image</pre> {| cellspacingborder="1" cellpaddingwidth="1800" widthcellspacing="8001" bordercellpadding="1"|-||Parameter Name||Description||Default Value||Comments|-||kaddress||Kernel copy address||0x80008000||hex memory address|-||rdaddress||Ram Disk location address||0x81600000||hex memory address

| Parameter Name |serial.low| Description |Serial number (low part)| Default Value |0 - 99999999| Comments|numeric

| kaddress |serial.high| Kernel copy address |Serial number (high part)| 0x80008000 |0 - 99999999| hex memory address|numeric

| rdaddress |revision| Ram Disk location address |Revision ID| 0x81600000 |0 - 9999| hex memory address|numeric

| serial.low |kImageName| Serial number (low part) |Kernel, binary image name| 0 - 99999999 |N/A| numeric|Kernel or binary image name

| serial.high |kRdImageName| Serial number (high part) |Ramdisk| 0 - 99999999 |N/A| numeric|Ram Disk image name

| revision |MachineID| Revision |Machine ID (kernel ID )| 0 - 9999 |2717| numeric|2717 (IGEP COM Module) | 2344 IGEPv2 | 3203 (IGEP COM PROTON)

| kImageName |Mode| Kernel, binary image name |Boot Mode| N/A |kernel| Kernel or |kernel=linux kernel / binary=boot binary image name

| kRdImageName |dss| Ramdisk |Enable Video| N/A |0| Ram Disk image name|0 = Disable, 1 Enable Video Output

| MachineID |dss_color| Machine ID (kernel ID) |Video Color| 2717 |0x00FF8000| 2717 (Module) &#124; 2344 IGEPv2|Solid Color

| Mode |dss_bitmap| Boot Mode |Video Bitmap Image| kernel |string| kernel=linux kernel / binary=boot binary |filename with desired image

=== TAG:&nbsp;[kparams] ===In this tag you can add all kernel parameters that you need, this is only an example:

</pre> = FAQ =

=FAQ=== How I can boot from NFS? ==Yes, you should add below parameters in the kparams tag:

nfsroot=192.168.2.105:/srv/nfs/linaro_minimal</pre> == How I can change the assigned kernel memory? ==You can use the mem kernel variable as assign your desired kernel memory as:

mem=430M</pre> == How I can add more kernel variables? ==You can add more variables creating a new variable - value pair under kparams tag as:

You can add more variables creating a new variable - value pair under kparams tag as: <pre>boot_delay=0</pre> == How I can modify my MAC address? ==You can assign your desired mac address using the variable&nbsp;smsc911x.mac as:

You can assign your desired mac address using the variable&nbsp;smsc911x.mac as: <pre>smsc911x.mac=0xb2,0xb0,0x14,0xb5,0xcd,0xde</pre> == How I can boot my board using ubi root filesystem? ==You should use these parameters:

rootfstype=ubifs</pre> == How I can boot my board using a RAM disk?<br> ==Use a RAMdisk it's fully supported.

</pre> == Can I change the Processor frecuency? ==Yes you can, IGEP X-loader configures the processor to boot at 600 Mhz you can select a different boot speed using the variable mpurate as:

Yes you can, IGEP X-loader configures the processor to boot at 600 Mhz you can select a different boot speed using the variable mpurate as: <pre>mpurate=800</pre> If you don't force any frequency the linux kernel will put your processor at the maximum speed (ex: DM3730 will run at 1 Ghz)

==How I can boot downloading the kernel using wget?==The way for do that it's using one minimal kernel and RAMdisk (ex: using image-core-minimal from poky), the procedure can be more or less:

a) Copy your minimal kernel and your Ramdisk inside the boot partition.

b) Boot Normally from this kernel and Ramdisk, create one script your your desired command such wget http://192.168.15.22/mykernel.bin

c) Execute the script when boot (you can do that adding the script to the init enviroment)

d) if the downloading it's ok then execute the kexec call, first load the kernel and then pass to it your desired parameters.

e) finally boot the new kernel with kexec.

==My board not boot and I don't know what to do ...==When you test your IGEP X-loader, igep.ini file and kernel we suggest use a microsd card in front of use directly the flash nand, if your flash not boot copy all files in one microsd card and boot from there. You can check what happens removing some files from your microsd card for example if you wish test if your flashed kernel it's loaded in a right way then remove the kernel from your microsd card (note: use the same kernel name), IGEP X-loader first try load the file from your microsd card but if it's not found then it try to find the file in the flash.<br>

== How I can upgrade my old kernel? ==Just copy the new one, the most secure way it's copy the new one and at end replace the igep.ini file with your new one.

Just copy the new one, the most secure way it's copy the new one and at end replace the igep.ini file with your new one. <pre>$ mount -t jffs2 /dev/mtdblock1 /boot

$ cp newkernel.bin /boot

$ cp igep.ini /boot</pre> Use a different kernel name and you always can boot from your old one.

= 6 Contribution &amp; Support &amp; Bugs Report =Contributions to this project be welcome and you can send your patches to support@iseebcn.com&nbsp;or you can use the igep forum for it.<br />You can access to IGEP-x-Loader repository using our git at [http://git.isee.biz/?p=pub/scm/igep-x-loader.git;a=summary git.isee.biz]<br />IGEP IRC Channel: [http://webchat.freenode.net/?channels=igep http://webchat.freenode.net/?channels=igep]

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