= Introduction Overview=This how to explains how to '''create a microSD card''' to boot IGEP boards with '''software distributions ( yocto, Ubuntu, Debian ...)'''.
This how to explains how to boot IGEPv2 or IGEP Module using a microSD card. __TOC__
== Theory ==OMAP35xx, DM37xx, AM335x, OMAP5, iMX6 processors can boot from a microSD. All IGEP boards use the microSD card as highest boot priority, it means that the processor try to boot from the microsd card before try to boot from other devices such the OneNand, Nand, SSD or eMMC.
OMAP35xx or DM37xx processors can Exist some rules to boot from a microSD. IGEPv2 or IGEP Module uses the microSD card as highest boot priority, it means that the processor try to boot from the microsd card before try to boot from other devices such the OneNand.
Exist some rules for ===Texas Instruments Processors===* The microsd card must be content at latest 2 partitions.* The first one must be primary partition with the boot from flag mark and formated using FAT(16 or 32) file system.* All names used in this partition must be msdos names (applies to OLD OMAP35xx processor).* The processor must load a microSD cardfirst program called '''MLO''', this program must reside in the first partition, this program it's also called '''x-loader or uboot-spl. '''
*''The microsd card must be content at latest 2 partitions. *The first one must be primary partition with the processor when boot flag mark ONLY load and formated using FAT filesystem. *All names used in this partition must be msdos names, it means you cannot use a extended names. *The processor must load a first program called '''execute the MLO''', this program must reside in and ignore all the first partition, this program rest it's also called '''xthe X-loader(MLO) the program responsible to load the next programs such kernel or uboot if you use this last one approach.'''
''===Freescale-NXP Processors===* The microsd card must be content at latest 1 partitions.* The primary partition can be formatted with any filesystem that u-boot can mount.* The processor ONLY Processor will load and execute the MLO program and ignore all the rest'''u-boot.imx''' it include the SPL and u-boot.
== Prerequisites ==''After load this u-boot.imx, u-boot will be ready for boot the kernel.''
*PC Therefore, we are going to '''setup a microSD card with Linux (We use for this how to Ubuntu 11.04 *MicroSD Card (4 Gbytes - class 4) *Tools such, fdisk, mkfs.ext3, mkfs.vfat, gparted ..these requirements''' and '''install a custom software distribution''' into it.
<br> ==Prerequisites==* PC with Linux (We use for this how to Ubuntu 16.04 LTS)* MicroSD Card (4 Gbytes - class 4) or bigger ...* Tools such, fdisk, mkfs.ext3, mkfs.vfat, gparted ...* Cross Toolchain included in Ubuntu 16.04 LTS gcc version 4.9.3 (Ubuntu/Linaro 4.9.3-13ubuntu2).
==ToolChain==* Read: [[Ubuntu 16.04 LTS Toolchain]] == Preparing the microSD card ==Open a terminal window and clear your dmesg using: <pre>sudo dmesg -c</pre>Now insert a new microsd card in your PC and then check your dmesg: <pre>dmesg</pre>You should see something like this:
Insert a new microsd card in your PC, you should see in your dmesg somthing like this after insert a new microsd card:
<pre>mmc0: new high speed SDHC card at address 0001
mmcblk0: mmc0:0001 00000 3.79 GiB
mmcblk0: unknown partition table
</pre> Ensure all in your microsd card it's erased:<br>
<pre>$ sudo dd if=/dev/zero of=/dev/mmcblk0 bs=1024 count=1024
[sudo] password for jdoe:
1024+0 records in
1024+0 records out
1048576 bytes (1.0 MB) copied, 0.43556 s, 2.4 MB/s</pre> == Install GParted ==We will use the gparted program for create the partitions, if you don't have this program installed then you must install it with this command: <pre>sudo apt-get install gparted</pre> ==GParted and Creation of Partitions==When the install procedure ends you can call the program from your system tools menu or directly using a terminal console. [[Image:Gparted initial.png|thumb|center]] ===Create the MSDOS Partition Table===The next step it's create the msdos table partition for it you should click in the "Device" menu and then in the "Create Partition Table" option. [[Image:Gparted create msdos table partition.png|thumb|center]]Check the default option it's create a msdos partition table. After that you can '''Apply'''. ===Create the BOOT Partition - IGEP Texas Instruments Processor based===<u>This Step it's only for OMAP35xx, DM37xx, AM335x, OMAP5432 processor based IGEP boards.</u> The Next step it's create the partitions for it you should go to the partition menu and select the "New" option then the application show a window like this: [[Image:Gparted create first partition.png|thumb|center]]We will configure the partition as: * Primary Partition* Format: FAT32* Size: 100 MegaBytes* Free Space Preceding: 0 MiB* Label: Boot* '''Align to: cylinder''' It is recommended to '''apply changes''' now or you might get an error later. ===Create the BOOT Partition - IGEP NXP-Freescale Processor based===<u>This Step it's only for iMX6 processor based IGEP boards.</u> The Next step it's create the partitions for it you should go to the partition menu and select the "New" option then the application show a window like this: [[File:imx6-primary-part.png|thumb|center]] We will configure the partition as: * Primary Partition* Format: FAT32* Free Space Preceding: 8 MiB* Size: 100 MegaBytes* Label: Boot* '''Align to: cylinder''' It is recommended to '''apply changes''' now or you might get an error later. ===Create the ROOTFS Partition===The Next step it's create the root file system partition. First you should select the unallocated partition area and then you should go to the partition menu and select the "New" option then the application show a window like this:<br /> [[Image:Gparted create first partition.png|thumb|center]] We will configure the rootfs partition as: * Primary Partition* Format: EXT4* Size: All the Rest* Label: Rootfs'''<br />''' At end we will click on "Add" button. [[Image:Gparted all configured.png|thumb|center]] or [[File:imx6_str.png|thumb|center]] After all apply all changes ===Select "Boot flag" for the boot partition===Now we must select the boot flag for the first partition for it we use the right mouse button over the boot partition and select "Manage Flags" option [[Image:Gparted boot flag.png|thumb|center]]Now we have the microsd prepared for copy the boot files ==MLO + u-boot IGEP Boards Texas Instruments based boards==After build or download the MLO and u-boot you should follow the next steps: * Copy MLO and u-boot.img to primary boot partition $ cp MLO u-boot.img /media/user/bootYou can follow this [[U-Boot Texas Instruments Series|HowTo]] if you want build the MLO and u-boot ==u-boot.imx IGEP Boards based on NXP-Freescale Processors==* Copy u-boot.imx using dd before primary partition in raw mode as sudo dd if=/home/user/u-boot-imx/u-boot.imx of=/dev/sde bs=512 seek=2Where /dev/sde is your microsd card You can follow this [[U-boot Freescale-NXP iMX6 Series|HowTo ]]if you want build the u-boot.imx ==Kernel==You can follow this other howto about [[The Linux kernel|how compile and install the Linux Kernel]]. ==Root File System==In this tutorial we will use the [http://downloads.isee.biz/pub/files/linaro/releases/linaro-m-headless-tar-20101108-2.tar.gz linaro headless] (soft floating) image as rootfs but you can use your favorite rootfs also. <br /> {{Message/Information Message|message=Here there are many articles about how to get '''many other [[:Category:Software distributions|software distributions]]'''.}} <br /> Here you've the [http://downloads.isee.biz/pub/files/linaro/releases/linaro-11.09-nano-n-tar-20110929-0.tar.gz linaro nano 11.09] (soft floating) available for download from the ISEE server.
We will use the gparted program for create Notes: You must build your programs with the partitions, hard floating if you don't have this program installed then you must install your rootfs is build with it with this command: <pre>sudo apt-get install gparted</pre> == GParted ==.
When the install procedure ends you can call the program from your system tools menu or directly using a terminal console. Notes: IGEPv5 must use Hard floating Rootfs
=== [[Image:Gparted initial.png|thumb|center]]Create the MSDOS Partition Table ===
The next step it's create the msdos table partition for it you should click in the "Device" menu and then in the "Create Partition Table" option.
[[Image:Gparted create msdos table partition.png|thumb|center]]Check ===Create the default option it's Rootfs mount point===Go to /media directory and create a msdos partition table after that you can apply. one sub-folder called "binary"
=== Create the BOOT Partition ===<pre>$ cd /media
The Next step it's create the partitions for it you should go to the partition menu and select the "New" option then the application show a window like this: $ sudo mkdir binary</pre>
[[Image:Gparted create first ===Mount the RootFS partition.png|thumb|center]]We will configure ===Mount the rootfs partition as:<br> using the 'binary' directory
*Primary Partition<brpre> $ media > sudo mount /dev/mmcblkp2 /media/binary*Format: FAT32<br> *Size: 100 MegaBytes<br> *Label: Boot<br/pre>
<br> ===Untar the rootfs package===Copy "linaro-m-headless-tar-20101108-2.tar.gz" file inside the /media directory and untar the file
[[Image:Gparted configure boot partition<pre>$ media > sudo tar xvfz linaro-m-headless-tar-20101108-2.tar.png|thumb|center]]We must "add" the gz</pre><br /> Now you should see inside your rootfs partition and gparted shows a partitions similar structure like this.
=== Create [[Image:Linaro RootFS.png|thumb|center]]Install the ROOTFS Partition kernel modules===Now you should install your kernel modules inside your root file system.
The Next step it's create the root filesystem partition<pre>$ media > cd /home/jdoe/linux-omap-2. 6
First you should select the unallocated partition area and then$ /home/jdoe/linux-omap-2.6 gt; sudo make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules_install INSTALL_MOD_PATH=/media/binary</pre>Alternatively if you should go to the partition menu and select the "New" option then downloaded the application show a window like this:<br> [[Image:Gparted create first partition.png|thumb|center]] We will configure binary package uncompress it inside the rootfs partition as:<br> directory /media/binary
*Primary Partition<br> ===Install the kernel Image===*Format: EXT4<br> *Size: All Just copy the Rest<br> *Label: Rootfs<br>zImage inside your boot partition, remember before that you must mount your mmc boot partition.
At end we will click on "Add" button<pre>$ /home/jdoe/linux-omap-2. 6> sudo cp arch/arm/boot/zImage /media/boot/if you're using dtb kernel as 3.8.y you must copy the dtb too.$ /home/jdoe/linuz-omap-2.6> sudo cp arch/arm/boot/dtbs/omap5-igep0050.dtb /media/boot
[[Image:Gparted all configured</pre>After that you can unmount the boot & rootfs partitions.png|thumb|center]]
=== Apply all Changes ===Now we're ready for test our new microsd card
Clink on Apply changes button in the main menu after that gparted show =Test your new MicroSD=You can test your new microSD card with a window like this for confirm all operations Serial client such as PuTTy. [[Using serial debug port to communicate|Here]] is an explanation about how to configure it.
[[Image:Gparted apply changes.png|thumb|center]]We (Note that speed should click on apply buttonbe configured to 115200 bauds).
[[Image:Gparted_apply_informationIf you already have configured it or you are using another Serial client and you have connected the Serial cable to the IGEPv2 board, then you are ready to test your microSD.png|thumb|center]]When the process finish we can see all changes applied
[[Image:Gparted_operations_completeInsert the microSD in your IGEPv2 board and power up the board.png|thumb|center]]
Now we can see all partitions and configurations done in the main gparted window[[Image:Linaro Boot1.png|thumb|center]][[Image:Linaro Boot2.png|thumb|center]]
[[Image:Gparted_partitions_done.png|thumb|center]]Now we must select the boot flag for the first partition for it we use the right mouse button over the boot partition and select "Manage Flags" option
[[Image:Gparted_boot_flag.png|thumb|center]]Now we have the microsd prepared for copy the boot files
<br><br> =Related articles=* [[Boot up sequence]]* [[Update the PRE-INSTALLED software image to a current release]]* [[The Linux kernel]]
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