efi_loader: Enable RISCV_EFI_BOOT_PROTOCOL support
This adds support for new RISCV_EFI_BOOT_PROTOCOL to
communicate the boot hart ID to bootloader/kernel on RISC-V
UEFI platforms.
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>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index 24f9a2b..e5e35fe 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -369,4 +369,14 @@
help
Enabling this option creates the ESRT UEFI system table.
+config EFI_RISCV_BOOT_PROTOCOL
+ bool "RISCV_EFI_BOOT_PROTOCOL support"
+ default y
+ depends on RISCV
+ help
+ The EFI_RISCV_BOOT_PROTOCOL is used to transfer the boot hart ID
+ to the next boot stage. It should be enabled as it is meant to
+ replace the transfer via the device-tree. The latter is not
+ possible on systems using ACPI.
+
endif