plat-rz: Add pta for rsip.

Signed-off-by: kousuke.suzuki <kousuke.suzuki.te@bp.renesas.com>

core/arch/arm/plat-rz/g3s/drivers/r_rsip_init.c → core/arch/arm/plat-rz/common/drivers/rsip.c

@@ -12,11 +12,11 @@
 #include <r_rsip.h>
 #include <r_rsip_addr.h>
 
-#define RSIP_BASE	(0x11850000)
-#define RSIP_SIZE	(0x00010000)
-
 register_phys_mem_pgdir(MEM_AREA_IO_SEC, RSIP_BASE, RSIP_SIZE);
 
+rsip_cfg_t rsip_cfg;
+rsip_instance_ctrl_t rsip_instance_ctrl;
+
 volatile uint32_t * gp_sce;
 
 static TEE_Result RSIP_Init(void)
@@ -25,6 +25,13 @@ static TEE_Result RSIP_Init(void)
 
     gp_sce = (uint32_t *) phys_to_virt_io(RSIP_BASE, RSIP_SIZE);
 
+    err = R_RSIP_Open(&rsip_instance_ctrl, &rsip_cfg);
+    if (FSP_SUCCESS != err)
+    {
+        EMSG("Failed to initialize RSIP (0x%08x).", err);
+        panic();
+    }
+
     return TEE_SUCCESS;
 }
 

core/arch/arm/plat-rz/common/drivers/sub.mk

@@ -2,5 +2,8 @@ global-incdirs-y += .
 
 srcs-$(CFG_RZ_SCIF) += scif.c
 
+srcs-$(CFG_RZ_RSIP) += rsip.c
+
 subdirs-$(CFG_RZ_XSPI) += xspi
-subdirs-$(CFG_RZ_RSIP) += r_rsip
+
+subdirs-$(CFG_RZ_RSIP) += r_rsip

core/arch/arm/plat-rz/common/hw_rng_rsip.c

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: BSD-2-Clause
+/*
+ * Copyright (c) 2024, Renesas Electronics
+ */
+
+#include <io.h>
+#include <kernel/panic.h>
+#include <mm/core_mmu.h>
+#include <mm/core_memprot.h>
+#include <rng_support.h>
+#include <platform_config.h>
+#include <trace.h>
+
+#include <r_rsip.h>
+#include <string.h>
+
+extern rsip_instance_ctrl_t rsip_instance_ctrl;
+
+#define LOCAL_BUFFER_SIZE (16)
+
+static uint32_t buffer[LOCAL_BUFFER_SIZE / sizeof(uint32_t)];
+
+static TEE_Result random_number_generator(uint32_t *rand, size_t size)
+{
+	fsp_err_t err;
+
+	size_t n;
+	const size_t rand_sz = 4;
+
+	assert(0 == (size % rand_sz));
+
+	for (n = 0; n < size; n += rand_sz)
+	{
+		err = R_RSIP_RandomNumberGenerate(
+			&rsip_instance_ctrl,
+			(uint8_t * const)&rand[n]
+			);
+		switch (err)
+		{
+			case FSP_SUCCESS:
+				break;
+			default:
+				return TEE_ERROR_BUSY;
+		}
+	}
+
+	return TEE_SUCCESS;
+}
+
+TEE_Result hw_get_random_bytes(void *buf, size_t len)
+{
+	TEE_Result ret = TEE_SUCCESS;
+
+	for(size_t i = 0; i < len; i += sizeof(buffer))
+	{
+		if (TEE_SUCCESS != (ret = random_number_generator(buffer, ARRAY_SIZE(buffer))))
+		{
+			return ret;
+		}
+		memcpy(buf + i, buffer, MIN(sizeof(buffer), len - i));
+	}
+
+	return ret;
+}