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-rw-r--r--include/efi_rng.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/include/efi_rng.h b/include/efi_rng.h
new file mode 100644
index 00000000000..35f59678c7a
--- /dev/null
+++ b/include/efi_rng.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2019, Linaro Limited
+ */
+
+#if !defined _EFI_RNG_H_
+#define _EFI_RNG_H_
+
+#include <efi.h>
+#include <efi_api.h>
+
+/* EFI random number generation protocol related GUID definitions */
+#define EFI_RNG_PROTOCOL_GUID \
+ EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, \
+ 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
+
+#define EFI_RNG_ALGORITHM_RAW \
+ EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, \
+ 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)
+
+struct efi_rng_protocol {
+ efi_status_t (EFIAPI *get_info)(struct efi_rng_protocol *protocol,
+ efi_uintn_t *rng_algorithm_list_size,
+ efi_guid_t *rng_algorithm_list);
+ efi_status_t (EFIAPI *get_rng)(struct efi_rng_protocol *protocol,
+ efi_guid_t *rng_algorithm,
+ efi_uintn_t rng_value_length, uint8_t *rng_value);
+};
+
+efi_status_t platform_get_rng_device(struct udevice **dev);
+
+#endif /* _EFI_RNG_H_ */