plat/arm/sgi: adapt to changes in memory map

Upcoming RD platforms will have an updated memory map for the various
pheripherals on the system. So, for the newer platforms, handle the
memory mapping and other platform specific functionality separately
from the existing platforms.

Change-Id: Iab1355a4c8ea1f6db4f79fcdd6eed907903b6a18
Signed-off-by: Aditya Angadi <aditya.angadi@arm.com>

plat/arm/css/sgi/sgi_plat_v2.c

+/*
+ * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <platform_def.h>
+
+#include <plat/arm/common/plat_arm.h>
+#include <plat/common/platform.h>
+#include <drivers/arm/sbsa.h>
+
+/*
+ * Table of regions for different BL stages to map using the MMU.
+ */
+#if IMAGE_BL1
+const mmap_region_t plat_arm_mmap[] = {
+	ARM_MAP_SHARED_RAM,
+	SGI_MAP_FLASH0_RO,
+	CSS_SGI_MAP_DEVICE,
+	SOC_PLATFORM_PERIPH_MAP_DEVICE,
+	SOC_SYSTEM_PERIPH_MAP_DEVICE,
+	{0}
+};
+#endif
+
+#if IMAGE_BL2
+const mmap_region_t plat_arm_mmap[] = {
+	ARM_MAP_SHARED_RAM,
+	SGI_MAP_FLASH0_RO,
+#ifdef PLAT_ARM_MEM_PROT_ADDR
+	ARM_V2M_MAP_MEM_PROTECT,
+#endif
+	CSS_SGI_MAP_DEVICE,
+	SOC_MEMCNTRL_MAP_DEVICE,
+	SOC_PLATFORM_PERIPH_MAP_DEVICE,
+	SOC_SYSTEM_PERIPH_MAP_DEVICE,
+	ARM_MAP_NS_DRAM1,
+#if ARM_BL31_IN_DRAM
+	ARM_MAP_BL31_SEC_DRAM,
+#endif
+#if TRUSTED_BOARD_BOOT && !BL2_AT_EL3
+	ARM_MAP_BL1_RW,
+#endif
+	{0}
+};
+#endif
+
+#if IMAGE_BL31
+const mmap_region_t plat_arm_mmap[] = {
+	ARM_MAP_SHARED_RAM,
+#ifdef PLAT_ARM_MEM_PROT_ADDR
+	ARM_V2M_MAP_MEM_PROTECT,
+#endif
+	CSS_SGI_MAP_DEVICE,
+	SOC_PLATFORM_PERIPH_MAP_DEVICE,
+	SOC_SYSTEM_PERIPH_MAP_DEVICE,
+	{0}
+};
+
+#endif
+
+ARM_CASSERT_MMAP
+
+#if TRUSTED_BOARD_BOOT
+int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size)
+{
+	assert(heap_addr != NULL);
+	assert(heap_size != NULL);
+
+	return arm_get_mbedtls_heap(heap_addr, heap_size);
+}
+#endif
+
+void plat_arm_secure_wdt_start(void)
+{
+	sbsa_wdog_start(SBSA_SECURE_WDOG_BASE, SBSA_SECURE_WDOG_TIMEOUT);
+}
+
+void plat_arm_secure_wdt_stop(void)
+{
+	sbsa_wdog_stop(SBSA_SECURE_WDOG_BASE);
+}