How to start barebox on Freescale iMX28 EVK
Maxime Ripard
maxime.ripard at free-electrons.com
Mon Jun 18 09:07:04 EDT 2012
Hi everyone,
I'm trying barebox on the imx28 evk evaluation board from freescale, and
I can't get barebox to boot yet.
I think I might have a problem with the bootlets used, but I'm not sure.
So, to compile barebox, I did:
ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- make imx28evk_defconfig
ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- make
Using codebench 2011.09 toolchain.
Then, I used U-boot IVT bootlet from freescale bootlet tarball as a base
for the one I created [1].
After that, I created the bootstream using
elftosb -z -f imx28 -c ./barebox_ivt.bd -o imx28_ivt_barebox.sb
Finally, I pushed on a properly formatted SD Card (with a 0x53 partition
flag on the first partition) using Freescale mk_hdr script[2] to
generate the proper headers:
./mk_hdr.sh `sudo fdisk -lu /dev/sdb | awk '$5==53 {print $2}'` 1 >
temp.bin
sudo dd if=temp.bin of=/dev/sdb1 ibs=512 conv=sync
sudo dd if=imx28_ivt_barebox.sb of=/dev/sdb1 ibs=512 obs=512 seek=1
conv=sync
When I finally plug the card in and boot the card, the two first
bootlets are properly executed, and then, it hangs, displaying nothing
but what is looking like an address: 0x8050100f
When flashing it in the exact same way with freescale's precompiled
u-boot bootstream, it works fine though, so my guess is that it is more
a problem regarding the barebox binary/the bootstream than the sd card
generation process...
Do you have an idea on what could be wrong with what I'm doing ?
Thanks,
Maxime
[1] http://code.bulix.org/eavngs-81672
[2] http://code.bulix.org/vzqsiy-81673
--
Maxime Ripard, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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