Merge changes from topic "raspberry-pi-4-support" into integration

* changes:
  rpi3: Move rng driver to drivers
  rpi3: Move VC mailbox driver into generic drivers directory
  rpi3: Move rpi3_hw.h header file to include/rpi_hw.h

2 files changed, 51 insertions, 0 deletions

diff --git a/include/drivers/rpi3/mailbox/rpi3_mbox.h b/include/drivers/rpi3/mailbox/rpi3_mbox.h
new file mode 100644
index 00000000..c1074402
--- /dev/null
+++ b/include/drivers/rpi3/mailbox/rpi3_mbox.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2019, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef RPI3_MBOX_H
+#define RPI3_MBOX_H
+
+#include <stdint.h>
+
+/* This struct must be aligned to 16 bytes */
+typedef struct __packed __aligned(16) rpi3_mbox_request {
+	uint32_t	size; /* Buffer size in bytes */
+	uint32_t	code; /* Request/response code */
+	uint32_t	tags[0];
+} rpi3_mbox_request_t;
+
+#define RPI3_MBOX_BUFFER_SIZE		U(256)
+
+/* Constants to perform a request/check the status of a request. */
+#define RPI3_MBOX_PROCESS_REQUEST	U(0x00000000)
+#define RPI3_MBOX_REQUEST_SUCCESSFUL	U(0x80000000)
+#define RPI3_MBOX_REQUEST_ERROR		U(0x80000001)
+
+/* Command constants */
+#define RPI3_TAG_HARDWARE_GET_BOARD_REVISION	U(0x00010002)
+#define RPI3_TAG_END				U(0x00000000)
+
+#define RPI3_TAG_REQUEST		U(0x00000000)
+#define RPI3_TAG_IS_RESPONSE		U(0x80000000) /* Set if response */
+#define RPI3_TAG_RESPONSE_LENGTH_MASK	U(0x7FFFFFFF)
+
+#define RPI3_CHANNEL_ARM_TO_VC		U(0x8)
+#define RPI3_CHANNEL_MASK		U(0xF)
+
+void rpi3_vc_mailbox_request_send(rpi3_mbox_request_t *req, int req_size);
+
+#endif
diff --git a/include/drivers/rpi3/rng/rpi3_rng.h b/include/drivers/rpi3/rng/rpi3_rng.h
new file mode 100644
index 00000000..ea5a6770
--- /dev/null
+++ b/include/drivers/rpi3/rng/rpi3_rng.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) 2019, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef RPI3_RNG_H
+#define RPI3_RNG_H
+
+void rpi3_rng_read(void *buf, size_t len);
+
+#endif