Hi Christian,
On Fri, 11 Jun 2021 at 23:59, Christian Melki christian.melki@t2data.com wrote:
On 6/11/21 3:40 PM, Simon Glass wrote:
+Heinrich Schuchardt
Hi Christian,
On Fri, 11 Jun 2021 at 07:30, Christian Melki christian.melki@t2data.com wrote:
Hi.
I have been trying to boot a bzImage with zboot from a VirtualBox UEFI instance -> U-Boot UEFI payload. So far I've been using 2021.07-rc1. I'd like to try a newer rc, but even if built exactly the same with the same .config, newer won't boot as an UEFI payload. So right now, I'm stuck at rc1.
Anyway. The kernel in question starts when configured with an EFI stub from the UEFI shell.
U-boot fails to boot the bzImage from the console using zboot though. Just freezes after "Starting kernel..."
We don't actually have tests for this in CI at present.
I don't see any changes in the zboot stuff though. There is quite a bit in efi_loader. You could perhaps try a bisect.
I can live with 2021.07-rc1 right now as it atleast starts as an UEFI payload. But my big issue is that I can't start the kernel with zboot. Full debug build isn't that much more informative either. I was thinking different load offsets, but mine seems pretty much standard, so I don't know. I've played around a bit with configuration on both halves, but it doesn't help.
Heinrich, do you have any ideas?
zboot 01080000 - 04000000 319c000 Valid Boot Flag Magic signature found Linux kernel version 5.12.0 (ptxdist@ptxdist) #2 SMP PREEMPT 2021-06-01T00:00:00+00:00 Building boot_params at 0x00090000 Loading bzImage at address 100000 (6516096 bytes) Initial RAM disk at linear address 0x04000000, size 52019200 bytes Kernel command line: "console=ttyS0,115200 rw quiet" Kernel loaded at 00100000, setup_base=00090000
Starting kernel ...
Any ideas?
Can you make sure that U-Boot is not writing out SMBIOS or other tables? It should be letting the kernel use the ones written by UEFI I think.
Also start linux with a serial console and early printk or whatever it is called these days.
Regards, Simon