riscv: Restart via EFI runtime services when available

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Firmware-preferred reset and EFI capsule update support requires reset
via EFI runtime services rather than direction M-mode firmware invocation
via SBI. Unlike poweroff, restart mechanism is directly controlled from
machine_restart function though.

Prefer the EFI runtime ResetSystem() service for restart when UEFI
runtime services are available.

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-v1-2-9414edcbbab0@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 d8d0fb556e

commit c888e324b2

1 changed files with 7 additions and 0 deletions

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arch/riscv/kernel/reset.c

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