Booting the Neo FreeRunner from SD via U-Boot

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(updated infos for P1 devices and OM 2007.2)
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Here are the steps described to boot your system from an SD card.
 
Here are the steps described to boot your system from an SD card.
  
−
=== Step 1: build your kernel ===
+
=== Step 1: Build your kernel ===
−
Get a fresh 2.6.20.2 kernel and apply the patches from the OpenMoko projekt.
+
−
alphaone@elara openmoko $ wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.20.2.tar.bz2
+
−
alphaone@elara openmoko $ tar -xjf linux-2.6.20.2.tar.bz2
+
−
alphaone@elara openmoko $ cd linux-2.6.20.2
+
−
alphaone@elara linux-2.6.20.2 $ svn co http://svn.openmoko.org/trunk/src/target/kernel/patches
+
−
alphaone@elara linux-2.6.20.2 $ quilt -a push
+
  
−
Now download the defconfig from http://svn.openmoko.org/trunk/oe/packages/linux/linux-gta01/defconfig-2.6.20.2-fic-gta01 and tweak the kernel in any way you want (be sure to build MMC/SD card support into the kernel). When done build the kernel and follow the steps in [[Bootloader#Creating_bootable_images]].
+
Kernel building is supposed to be done through OpenEmbedded. If you use the MokoMakefile open up $OMDIR/openmoko/trunk/oe/packages/linux/linux-gta01/defconfig-2.6.21.6-fic-gta01. If you are building OM-2007.2 open $OEDIR/packages/linux/linux-gta01/defconfig-2.6.21.5-fic-gta01. (''Note that the kernel version may change in future versions.'')
  
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=== Step 2: populate SD card ===
+
Now find the line saying:
  
−
Format partition 1 as ext3 (ext2 will not boot).
+
CONFIG_MMC_S3C=m
−
Mount your SD card somewhere and put your image on it
+
 +
and change it to:
  
−
  elara openmoko # mount /dev/mmcblk0p1 /mnt/moko
+
  CONFIG_MMC_S3C=y
−
  elara openmoko # tar -C /mnt/moko/ -xvzf openmoko-devel-image-fic-gta01-20070313022035.rootfs.tar.gz
+
 
 +
Thats it. Now rebuild the kernel.
 +
 
 +
=== Step 2: Populate SD card ===
 +
 
 +
Format partition 1 as ext3 (ext2 will not boot). Mount your SD card somewhere and put your image on it:
 +
 
 +
mount /dev/sda1 /mnt/moko
 +
  tar -C /mnt/moko/ -xvzf openmoko-devel-image-fic-gta01-20070313022035.rootfs.tar.gz
  
 
Now we also want the kernel on there
 
Now we also want the kernel on there
  
−
  elara openmoko # cp uImage /mnt/moko/boot/
+
  cp uImage /mnt/moko/boot/
  
−
(If you are lazy, you can probably get some binaries from http://buildhost.openmoko.org/tmp/deploy/images/ )
+
If you are building OM-2007.2 you need to add "tar" to the image types in your ''local.conf'':
 +
 
 +
IMAGE_FSTYPES = "jffs2 tar"
 +
 
 +
After building a new image by issuing ''bitbake openmoko-devel-image'' there will be a ''OpenMoko-....tar'' in the deploy directory. Copy it on the SD card by doing
 +
 
 +
mount /dev/sda1 /mnt/moko
 +
tar -C /mnt/moko/ -xvf openmoko-devel-image-fic-gta01-20070313022035.rootfs.tar
 +
 
 +
In OM-2007.2 the last built kernel gets a special soft-link. Therefore you can copy it by doing:
 +
cp uImage-fic-gta01-latest.bin /mnt/moko/boot/uImage
  
 
=== Step 3: Add uboot boot entry ===
 
=== Step 3: Add uboot boot entry ===
−
Start uboot in bootmenu mode and add the following entry via serial console: (See  [[Bootloader]] section on how to access an bootloader)
 
  
−
  GTA01Bv3 # setenv menu_4 Boot from SD: setenv bootargs root=/dev/mmcblk0p1 rootdelay=5 console=ttySAC0,115200 console=tty0 loglevel=8 \${mtdparts}\; mmcinit\; ext2load mmc 0 0x32000000 /boot/\${sd_image_name}\; bootm 0x32000000
+
On my Phase-1 Neo the boot menu entry existed already. If yours is missing it follow those instructions: Start uboot in bootmenu mode (= hold AUX while powering on) and add the following entry via serial console: (See  [[Bootloader]] section on how to access an bootloader).
−
  GTA01Bv3 # setenv sd_image_name uImage
+
 
−
  GTA01Bv3 # saveenv
+
  GTA01Bv4 # setenv menu_4 Boot from SD: setenv bootargs root=/dev/mmcblk0p1 rootdelay=5 console=ttySAC0,115200 console=tty0 loglevel=8 \${mtdparts}\; mmcinit\; ext2load mmc 0 0x32000000 /boot/\${sd_image_name}\; bootm 0x32000000
 +
  GTA01Bv4 # setenv sd_image_name uImage
 +
  GTA01Bv4 # saveenv
  
 
You can now easily boot a different kernel by changing the variable sd_image_name to the new name.
 
You can now easily boot a different kernel by changing the variable sd_image_name to the new name.
  
 
=== Step 4: Boot into the new system ===
 
=== Step 4: Boot into the new system ===
 +
 
Power off your device, insert the SD card and boot into the boot menu. You should have an entry called "Boot from SD" which does exactly that. :-)
 
Power off your device, insert the SD card and boot into the boot menu. You should have an entry called "Boot from SD" which does exactly that. :-)
  
 
[[Category:Software]]
 
[[Category:Software]]
 
[[Category:Guides]]
 
[[Category:Guides]]

Revision as of 02:07, 9 August 2007

Here are the steps described to boot your system from an SD card.

Contents

Step 1: Build your kernel

Kernel building is supposed to be done through OpenEmbedded. If you use the MokoMakefile open up $OMDIR/openmoko/trunk/oe/packages/linux/linux-gta01/defconfig-2.6.21.6-fic-gta01. If you are building OM-2007.2 open $OEDIR/packages/linux/linux-gta01/defconfig-2.6.21.5-fic-gta01. (Note that the kernel version may change in future versions.)

Now find the line saying: 

CONFIG_MMC_S3C=m

and change it to: 

CONFIG_MMC_S3C=y

Thats it. Now rebuild the kernel.

Step 2: Populate SD card

Format partition 1 as ext3 (ext2 will not boot). Mount your SD card somewhere and put your image on it: 

mount /dev/sda1 /mnt/moko
tar -C /mnt/moko/ -xvzf openmoko-devel-image-fic-gta01-20070313022035.rootfs.tar.gz

Now we also want the kernel on there 

cp uImage /mnt/moko/boot/

If you are building OM-2007.2 you need to add "tar" to the image types in your local.conf: 

IMAGE_FSTYPES = "jffs2 tar"

After building a new image by issuing bitbake openmoko-devel-image there will be a OpenMoko-....tar in the deploy directory. Copy it on the SD card by doing 

mount /dev/sda1 /mnt/moko
tar -C /mnt/moko/ -xvf openmoko-devel-image-fic-gta01-20070313022035.rootfs.tar

In OM-2007.2 the last built kernel gets a special soft-link. Therefore you can copy it by doing: 

cp uImage-fic-gta01-latest.bin /mnt/moko/boot/uImage

Step 3: Add uboot boot entry

On my Phase-1 Neo the boot menu entry existed already. If yours is missing it follow those instructions: Start uboot in bootmenu mode (= hold AUX while powering on) and add the following entry via serial console: (See Bootloader section on how to access an bootloader). 

GTA01Bv4 # setenv menu_4 Boot from SD: setenv bootargs root=/dev/mmcblk0p1 rootdelay=5 console=ttySAC0,115200 console=tty0 loglevel=8 \${mtdparts}\; mmcinit\; ext2load mmc 0 0x32000000 /boot/\${sd_image_name}\; bootm 0x32000000
GTA01Bv4 # setenv sd_image_name uImage
GTA01Bv4 # saveenv

You can now easily boot a different kernel by changing the variable sd_image_name to the new name.

Step 4: Boot into the new system

Power off your device, insert the SD card and boot into the boot menu. You should have an entry called "Boot from SD" which does exactly that. :-)

Retrieved from "http://wiki.openmoko.org/index.php?title=Booting_the_Neo_FreeRunner_from_SD_via_U-Boot&oldid=16360"
Personal tools

Here are the steps described to boot your system from an SD card.

Step 1: build your kernel

Get a fresh 2.6.20.2 kernel and apply the patches from the OpenMoko projekt. 

alphaone@elara openmoko $ wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.20.2.tar.bz2
alphaone@elara openmoko $ tar -xjf linux-2.6.20.2.tar.bz2
alphaone@elara openmoko $ cd linux-2.6.20.2
alphaone@elara linux-2.6.20.2 $ svn co http://svn.openmoko.org/trunk/src/target/kernel/patches
alphaone@elara linux-2.6.20.2 $ quilt -a push

Now download the defconfig from http://svn.openmoko.org/trunk/oe/packages/linux/linux-gta01/defconfig-2.6.20.2-fic-gta01 and tweak the kernel in any way you want (be sure to build MMC/SD card support into the kernel). When done build the kernel and follow the steps in Bootloader#Creating_bootable_images.

Step 2: populate SD card

Format partition 1 as ext3 (ext2 will not boot). Mount your SD card somewhere and put your image on it 

elara openmoko # mount /dev/mmcblk0p1 /mnt/moko
elara openmoko # tar -C /mnt/moko/ -xvzf openmoko-devel-image-fic-gta01-20070313022035.rootfs.tar.gz

Now we also want the kernel on there 

elara openmoko # cp uImage /mnt/moko/boot/

(If you are lazy, you can probably get some binaries from http://buildhost.openmoko.org/tmp/deploy/images/ )

Step 3: Add uboot boot entry

Start uboot in bootmenu mode and add the following entry via serial console: (See Bootloader section on how to access an bootloader) 

GTA01Bv3 # setenv menu_4 Boot from SD: setenv bootargs root=/dev/mmcblk0p1 rootdelay=5 console=ttySAC0,115200 console=tty0 loglevel=8 \${mtdparts}\; mmcinit\; ext2load mmc 0 0x32000000 /boot/\${sd_image_name}\; bootm 0x32000000
GTA01Bv3 # setenv sd_image_name uImage
GTA01Bv3 # saveenv

You can now easily boot a different kernel by changing the variable sd_image_name to the new name.

Step 4: Boot into the new system

Power off your device, insert the SD card and boot into the boot menu. You should have an entry called "Boot from SD" which does exactly that. :-)