tree 0e99c3903f18cca4e97c60f3595b4fee5924ca1d
parent 35e8d79e695b290d371d82dbcc5b15cea429d424
author Lorenz Brun <lorenz@monogon.tech> 1666636908 +0000
committer Lorenz Brun <lorenz@monogon.tech> 1666799206 +0000

m/p/kexec: add auxiliary EFI handling

This makes kexec do auxiliary handling related to EFI. If a system is
booted using EFI and has an ACPI Root System Description Pointer (RDSP)
i.e. just about every modern system, the pointer to that structure needs
to be passed to the kexec'ed kernel on its command line.
Otherwise various EFI-related functionality breaks, like accessing
EFI variables which causes a kernel crash.

Logically I think this functionality belongs to kexec as callers
shouldn't need to be aware of kexec specifics and every caller
potentially running on EFI needs this functionality.

Change-Id: Iec7ad4c3c0a7e5c31d738d307ff0e10aac02ab11
Reviewed-on: https://review.monogon.dev/c/monogon/+/960
Tested-by: Jenkins CI
Reviewed-by: Mateusz Zalega <mateusz@monogon.tech>