efi: stub: implement efi_get_random_bytes() based on EFI_RNG_PROTOCOL
This exposes the firmware's implementation of EFI_RNG_PROTOCOL via a new
function efi_get_random_bytes().
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 569b5a8..e747eb0 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -299,7 +299,7 @@
void *open_protocol_information;
void *protocols_per_handle;
void *locate_handle_buffer;
- void *locate_protocol;
+ efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **);
void *install_multiple_protocol_interfaces;
void *uninstall_multiple_protocol_interfaces;
void *calculate_crc32;
@@ -599,6 +599,10 @@
#define EFI_PROPERTIES_TABLE_GUID \
EFI_GUID( 0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5 )
+#define EFI_RNG_PROTOCOL_GUID \
+ EFI_GUID(0x3152bca5, 0xeade, 0x433d, \
+ 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
+
typedef struct {
efi_guid_t guid;
u64 table;