diff options
author | Sunil V L <sunilvl@ventanamicro.com> | 2022-05-19 10:45:12 +0530 |
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committer | Ard Biesheuvel <ardb@kernel.org> | 2022-05-19 10:22:17 +0200 |
commit | 3f68e69520d3d52d66a6ad872a75b7d8f2ea7665 (patch) | |
tree | b1ada79433d09ca273cd5b8f78c30a49162d2387 /drivers/firmware/efi/libstub/efistub.h | |
parent | a6cfe03c34bad8c7f51aba49a73403e348c51d1f (diff) |
riscv/efi_stub: Add support for RISCV_EFI_BOOT_PROTOCOL
Add support for getting the boot hart ID from the Linux EFI stub using
RISCV_EFI_BOOT_PROTOCOL. This method is preferred over the existing DT
based approach since it works irrespective of DT or ACPI.
The specification of the protocol is hosted at:
https://github.com/riscv-non-isa/riscv-uefi
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Link: https://lore.kernel.org/r/20220519051512.136724-2-sunilvl@ventanamicro.com
[ardb: minor tweaks for coding style and whitespace]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'drivers/firmware/efi/libstub/efistub.h')
-rw-r--r-- | drivers/firmware/efi/libstub/efistub.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h index a0477afaa55f..b0ae0a454404 100644 --- a/drivers/firmware/efi/libstub/efistub.h +++ b/drivers/firmware/efi/libstub/efistub.h @@ -794,6 +794,13 @@ union efi_tcg2_protocol { } mixed_mode; }; +struct riscv_efi_boot_protocol { + u64 revision; + + efi_status_t (__efiapi *get_boot_hartid)(struct riscv_efi_boot_protocol *, + unsigned long *boot_hartid); +}; + typedef union efi_load_file_protocol efi_load_file_protocol_t; typedef union efi_load_file_protocol efi_load_file2_protocol_t; |