riscv: efi: Power off via EFI runtime services when available

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When booted via UEFI with runtime services enabled, EFI Reset Shutdown is
the firmware-preferred shutdown path: it lets firmware run its own
shutdown hooks which may invoke SBI SRST extension internally. However,
RISC-V always powers off via the SBI SRST extension today and EFI runtime
path is never used even when firmware provides it.

Enable the poweroff via EFI by overriding efi_poweroff_required()

Signed-off-by: Atish Patra <atishp@meta.com>
Reviewed-by: Sunil V L <sunilvl@oss.qualcomm.com>
Link: https://patch.msgid.link/20260615-efi_reset_shutdown-v1-1-9414edcbbab0@meta.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>

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Atish Patra 2026-08-07 19:24:29 -06:00 • committed by Paul Walmsley

parent 994dad686e

commit d8d0fb556e

1 changed files with 5 additions and 0 deletions

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arch/riscv/kernel/efi.c

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