Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/include/services/trng_svc.h b/include/services/trng_svc.h
new file mode 100644
index 0000000..92417c2
--- /dev/null
+++ b/include/services/trng_svc.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2021-2022, ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef TRNG_SVC_H
+#define TRNG_SVC_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <lib/smccc.h>
+
+/* SMC function IDs for TRNG queries */
+#define ARM_TRNG_VERSION	U(0x84000050)
+#define ARM_TRNG_FEATURES	U(0x84000051)
+#define ARM_TRNG_GET_UUID	U(0x84000052)
+#define ARM_TRNG_RND32		U(0x84000053)
+#define ARM_TRNG_RND64		U(0xC4000053)
+
+/* TRNG version numbers */
+#define TRNG_VERSION_MAJOR	(0x1)
+#define TRNG_VERSION_MINOR	(0x0)
+
+/* TRNG Error Numbers */
+#define TRNG_E_SUCCESS		(0)
+#define TRNG_E_NOT_SUPPORTED	(-1)
+#define TRNG_E_INVALID_PARAMS	(-2)
+#define TRNG_E_NO_ENTROPY	(-3)
+#define TRNG_E_NOT_IMPLEMENTED	(-4)
+
+/* TRNG Entropy Bit Numbers */
+#define TRNG_RND32_ENTROPY_MAXBITS	(96U)
+#define TRNG_RND64_ENTROPY_MAXBITS	(192U)
+
+/* Public API to perform the initial TRNG entropy setup */
+void trng_setup(void);
+
+/* Public API to verify function id is part of TRNG */
+bool is_trng_fid(uint32_t smc_fid);
+
+/* Handler to be called to handle TRNG smc calls */
+uintptr_t trng_smc_handler(
+	uint32_t smc_fid,
+	u_register_t x1,
+	u_register_t x2,
+	u_register_t x3,
+	u_register_t x4,
+	void *cookie,
+	void *handle,
+	u_register_t flags
+);
+
+#endif /* TRNG_SVC_H */