[U-Boot] [PATCH 0/20] tegra: Expand Nyan-big support

[Simon Glass]

Hi Matthew,

On 1 May 2017 at 08:43, Matthew Gorski <matt.gorski at gmail.com> wrote:
> I am porting u-boot to nyan_big and need some input.  I have been searching
> high and low and found this thread here: [U-Boot] [PATCH 0/20] tegra: Expand
> Nyan-big support
>
>  https://lists.denx.de/pipermail/u-boot/2015-March/209530.html
>
> I have tried to build u-boot with the branch here:
>
> https://git.collabora.com/cgit/user/tomeu/u-boot.git/commit/?h=nyan-big
>
> and also the official chromium next branch

Have you tried mainline U-Boot? It already supports nyan-big. I'm not
sure about the situation with the downstream trees.

>
> I followed building instructions here:
> https://www.chromium.org/chromium-os/firmware-porting-guide/using-nv-u-boot-on-the-samsung-arm-chromebook
>
> I build with these commands:
>
> mkimage -e 0x81000100 -a 0x81000100 -f kernel-big.its kernel-u-boot
>
> (with and without the load address setting)
>
> vbutil_kernel --arch arm --pack kernel.bin --keyblock
> /usr/share/vboot/devkeys/kernel.keyblock --signprivate
> /usr/share/vboot/devkeys/kernel_data_key.vbprivk --version 1 --config
> dummy.txt --vmlinuz kernel-u-boot --bootloader dummy.txt
>
> I have had numerous failed attempts to boot uboot from sdcard mmcblk1p1
>
> Any help is appreciated I have only gotten a blank screen after weeks of
> flashing.  I can boot custom v3.10 kernels so I assume I am using the
> correct building procedure.  Thanks in advance for help from the u-boot
> community.

It is possible that it needs a particular address due to limitations
in the FIT support on Nyan. I'm not sure what it is but might be able
to take a look at some point.

How are you building your SD card? Are you following some instructions
from somewhere?

Regards,
Simon