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From: Richard Kojedzinszky <richard@kojedz.in>
To: u-boot@lists.denx.de
Subject: Radxa rock-pi-3a
Date: Fri, 08 Apr 2022 09:44:25 +0200	[thread overview]
Message-ID: <774b3ce33306097071e79a6b9bb3b092@kojedz.in> (raw)

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

             reply	other threads:[~2022-04-08 12:11 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-08  7:44 Richard Kojedzinszky [this message]
2022-04-09  2:28 ` Radxa rock-pi-3a Kever Yang
2022-04-09  4:56   ` Richard Kojedzinszky
2022-04-09  7:30     ` Richard Kojedzinszky

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