Hi Kevin,
You mentioned you've been hacking with SeaBIOS for a while. You may have
already seen building as a CSM mentioned here:
https://seabios.org/Build_overview
This seems to suggest the process as building SeaBIOS as a CSM module and then
building EDKII. I think I tried to do this once and EDKII ended up being too
big to fit in the CBFS I had.
There was also a talk on getting SeaBIOS working as a CSM on hardware at OSFC
one year:
https://cfp.osfc.io/osfc2020/talk/YWWRVG/
I'd be interested to see how to solve this, and I'm sorry I can't be of much
help.
-------- Original Message --------
On 14 Sept 2023, 14:37, Keith Hui wrote:
> On Thu., Sep. 14, 2023, 09:18 Matt DeVillier, <matt.devill...@gmail.com>
> wrote:
>
>> On Wed, Sep 13, 2023 at 11:28 PM Keith Hui <buu...@gmail.com> wrote:
>>
>>> I did add SeaBIOS as
>>> secondary payload, and it couldn't boot. Then I pulled out the main
>>> drive out of my laptop which is all UEFI, and it booted fine after
>>> probably 30 seconds of nothing - the first thing I saw on screen is
>>> the Fedora spinner. Nothing from edk2 or grub on the drive.
>>
>> edk2 doesn't support secondary payloads
>
> Then how should edk2 + CSM (seabios?) + (i)PXE be set up so it can boot from
> anything?
>
>>> There also was a bit of delay on my connected serial console, then
>>> when info finally started flowing, it's already well into ramstage.
>>> And when I checked cbmem, it unfortunately overflowed so I lost logs
>>> of raminit, which would be most important given my patch train now
>>> under review. It would take a warm reboot before I start getting the
>>> head of the boot logs.
>>>
>>> I didn't set a boot logo.
>>>
>>> What more set up I have to do to get my edk2 and grub boot menu back?
>>>
>>> I've attached logs from minicom, cbmem, and my Kconfig, if it helps.
>>
>> as Nico said, you need to use a linear framebuffer, not vga text. The
>> display resolution should be native.
>>
>> also, edk2 cbmem logging may or may not work, and may or may not slow down
>> boot time.
>
> I'll report back when I return from a trip in a week.
>
> edk2 cbmem logging probably works. I remember seeing some EFI things in there.
>
> Thanks
> Keith
_______________________________________________
coreboot mailing list -- coreboot@coreboot.org
To unsubscribe send an email to coreboot-le...@coreboot.org
