[Bug 245303] [Coreboot] memstick.img not booting

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=245303

            Bug ID: 245303
           Summary: [Coreboot] memstick.img not booting
           Product: Base System
           Version: 11.2-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: misc
          Assignee: bugs at FreeBSD.org
          Reporter: baylee4 at protonmail.com

Hi,

I tried to install FreeBSD on a Corebooted machine (using SeaBIOS payload) and
it seems that the installer just won’t boot at all. With the 12.x version of
the installer hangs just after ‘/boot/entropy size=0x1000’, and with the 11.x
version it hangs after ‘Booting…’.

I tried to disable ACPI and enable Verbose in boot options, with similar
result. Windows, Linux, and OpenBSD boot just fine on this machine.

It seems that it’s a graphic issue, I tried various combinations of Coreboot
settings and here are the results :

GENERIC_LINEAR_FRAMEBUFFER (Linear “high-resolution” framebuffer) : no display
at all

VGA_TEXT_FRAMEBUFFER (Legacy VGA text mode) : display, but with altered colors

Does someone have an idea on how to fix this ?

Thank you

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