Hi Matthew,
On 1 May 2017 at 08:43, Matthew Gorski matt.gorski@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-...
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