Hi Richard,
The ATAGs to pass the parameters is not available on the mainline
U-Boot, and only use os_regs for the ram size for now, it do have the
limitation for max 4GB now.
There is a fix for this on the list, you can try it:
https://patchwork.ozlabs.org/project/uboot/patch/20220222013131.3114990-12-pgwipe...@gmail.com/
Thanks,
- Kever
On 2022/4/8 15:44, Richard Kojedzinszky wrote:
Dear community,
I own a rock-pi-3a board with 8G ram. Right now, radxa's u-boot is
capable of detecting the whole amount during boot. Upstream u-boot
shows 1G of dram installed.
I've started with evb-rk3568_defconfig.
What I would like to achieve is that u-boot load grub-efi, to finally
boot the operating system. Howewer, with radxa uboot, and using
grub-efi, the kernel sees 4G only. If I boot the kernel image directly
from radxa u-boot, the whole 8G is visible. I assume that efi is
broken somehow, as I get multiple warnings from kernel regarding EFI
firmware.
Reading radxa's u-boot, it seems that it uses ATAGs do detect memory
size. Am I in the right way?
Would it be beneficial to port some of that code to upstream u-boot,
or are there other solutions to detect correct memory size?
Thanks in advance,
Richard
