How to set up kernel 3.5.0 for Pandaboard ES

[Ronny Bismark]

Hi there,

I kind of new to kernel building but I would like to try my own kernel. I pretty much followed the "how to" on this site ( http://elinux.org/Panda_How_to_kernel_3_5_rcx ) to install the 3.5.0-rc7

everything is okay but I don't get why they I need some different files (generating an MLO and an u-boot.img) for the Pandaboard ES (the older board doesn't require these) and what should i do with these files?

How can I configure or install the MLO & u-boot.img 

When I just preoceed with the normal "how to" I just get an vmlinuz-3.5.0-rc7-omap4 and an initrd.img-3.5.0-rc7-omap4 which is enough for the flash-kernel script. 

Regards,

[John Tobias]

This link may help you to understand why you need MLO/uboot:
http://www.omappedia.com/wiki/Get_started_with_ubuntu_on_omap4

[Ronny Bismark]

Thank you to pointing me to this tutorial. But I still not clear with the Kernel installation.

Because now I have a MLO & a u-boot.img (which I should copy to the FAT partition of the SD card)

Are these additional files to the compiled kernel from source or is this standalone?

I'm just wondering because compiling the kernel from source takes almost an hour compared to this solution, which takes 2 min

[Ronny Bismark]

Hi there,

I used the tuorial from this site to build and install ne new kernel.

I copied the MLO u-boo.bin and the uImage to the FAT partition of my Pandaboard and then I can boot but I get following message:

FATAL: Could not load /lib/modules/3.5.0-rc7-dirty/modules.dep: No such file or directory

fsck from util-linux 2.20.1

/dev/mmcblk0p2: clean, 319456/3887104 files, 10158442/31093248 blocks

modprobe: FATAL: Could not load /lib/modules/3.5.0-rc7-dirty/modules.dep: No such file or directory

modprobe: FATAL: Could not load /lib/modules/3.5.0-rc7-dirty/modules.dep: No such file or directory

after the boot up I tried to load a module manually without success. This is the result:

ls: cannot access /lib/modules/3.5.0-rc7-dirty: No such file or directory

would be great to get your help. I dont know where the failure is..

Regards,

[Ronny Bismark]

sorry I forgot the link of the tutorial. ( http://elinux.org/Panda_How_to_kernel_3_5_rcx ) 

Basically I do.

Getting mainline Kernel

git clone http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
cd linux
git checkout v3.5-rcx

Getting special uboot and MLO for Pandaboard ES

mkdir pandaboard-es
cd pandaboard-es
git clone git://git.linaro.org/boot/u-boot-linaro-stable.git
cd u-boot-linaro-stable
git checkout -b pandaboard-es origin/Linaro-u-boot-2011.12

Make my own config file ( copied the rc7 inside http://elinux.org/images/1/14/Config.3.5-rc7.1)

vim .config

sudo make menuconfig

build the uImage

make ARCH=arm CROSS_COMPILE=Path_to_your/arm-2010q1/bin/arm-none-linux-gnueabi- uImage

then I copied everything to my FAT partition and booted

[John Tobias]

make ARCH=arm CROSS_COMPILE=Path_to_your/arm-2010q1/bin/arm-none-linux-gnueabi-
uImage modules
cp the uImage into your FAT partition
make ARCH=arm CROSS_COMPILE=Path_to_your/arm-2010q1/bin/arm-none-linux-gnueabi-
INSTALL_MOD_PATH=<path of your rootfs> modules_install

john

[CHUCK]

Hi,

i got the same error - could you please let me know, what worked at the end - thanks?!