How to start barebox on Freescale iMX28 EVK

[Maxime Ripard]

Anyone ?

Le 18/06/2012 15:07, Maxime Ripard a écrit :
> 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