Am 24.08.2012 10:46, schrieb Jan Lübbe:
Jan, thanks very much for pointing me into the right direction
> Hi!
>
> On Thu, 2012-08-23 at 19:59 +0200, Peter wrote:
>> I am able to boot the kernel from NOR flash and use the mmc as rootfs. However
>> I did not yet find a way to boot the kernel from the MMC. I set up the MMC
>> with 255 heads, 63 sectors/track, 245 cylinders and formated partition 1 as
>> VFAT and made it bootable. I then copied uImage to it. Partition 2 contains
>> the rootfs which can be used when booting the kernel from flash.
>>
>> Barebox /env/config contains: (besides others)
>> ...
>> kernel_loc=disk
>> rootfs_loc=disk
>> rootfs_type=ext2
>> rootfs_part_linux_dev=mmcblk0p2
>> kernel_part=disk0.0
>> ...
>>
>> Trying to boot results in:
>> booting kernel from /dev/disk0.0
>>
>> and then followed by the barebox prompt.
>
> You're using the old default-env which does not support uImage on FAT
> (only a kernel directly in a partition). Either switch to default-env-2
> and mount the FAT ('mount /dev/disk0.0 fat /mnt') before loading the
> kernel from /mnt/uImage.
> Otherwise for the old default-env take a look at
> <1345472428-17417-13-git-send-email-jlu@xxxxxxxxxxxxxx>. Note that for
> that to work, the FAT must be mounted by the board code or you need to
> setup an automount.
After implementing all required driver and support into barebox, it turns
out that I also need to increase it's partition size to 512K. I then was
able to use the existing environment and changed the boot script as follows
elif [ x$kernel_loc = xdisk ]; then
kdev="/dev/$kernel_part"
+ mkdir /boot
+ mount $kdev fat /boot
+ kdev=/boot/UIMAGE
Many thanks, Peter
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