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-rw-r--r--plat/arm/board/fvp/fvp_common.c623
1 files changed, 623 insertions, 0 deletions
diff --git a/plat/arm/board/fvp/fvp_common.c b/plat/arm/board/fvp/fvp_common.c
new file mode 100644
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--- /dev/null
+++ b/plat/arm/board/fvp/fvp_common.c
@@ -0,0 +1,623 @@
+/*
+ * Copyright (c) 2013-2023, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <common/debug.h>
+#include <drivers/arm/cci.h>
+#include <drivers/arm/ccn.h>
+#include <drivers/arm/gicv2.h>
+#include <drivers/arm/sp804_delay_timer.h>
+#include <drivers/generic_delay_timer.h>
+#include <fconf_hw_config_getter.h>
+#include <lib/mmio.h>
+#include <lib/smccc.h>
+#include <lib/xlat_tables/xlat_tables_compat.h>
+#include <platform_def.h>
+#include <services/arm_arch_svc.h>
+#include <services/rmm_core_manifest.h>
+#if SPM_MM
+#include <services/spm_mm_partition.h>
+#endif
+
+#include <plat/arm/common/arm_config.h>
+#include <plat/arm/common/arm_pas_def.h>
+#include <plat/arm/common/plat_arm.h>
+#include <plat/common/platform.h>
+
+#include "fvp_private.h"
+
+/* Defines for GIC Driver build time selection */
+#define FVP_GICV2 1
+#define FVP_GICV3 2
+
+/*******************************************************************************
+ * arm_config holds the characteristics of the differences between the three FVP
+ * platforms (Base, A53_A57 & Foundation). It will be populated during cold boot
+ * at each boot stage by the primary before enabling the MMU (to allow
+ * interconnect configuration) & used thereafter. Each BL will have its own copy
+ * to allow independent operation.
+ ******************************************************************************/
+arm_config_t arm_config;
+
+#define MAP_DEVICE0 MAP_REGION_FLAT(DEVICE0_BASE, \
+ DEVICE0_SIZE, \
+ MT_DEVICE | MT_RW | MT_SECURE)
+
+#define MAP_DEVICE1 MAP_REGION_FLAT(DEVICE1_BASE, \
+ DEVICE1_SIZE, \
+ MT_DEVICE | MT_RW | MT_SECURE)
+
+#if FVP_GICR_REGION_PROTECTION
+#define MAP_GICD_MEM MAP_REGION_FLAT(BASE_GICD_BASE, \
+ BASE_GICD_SIZE, \
+ MT_DEVICE | MT_RW | MT_SECURE)
+
+/* Map all core's redistributor memory as read-only. After boots up,
+ * per-core map its redistributor memory as read-write */
+#define MAP_GICR_MEM MAP_REGION_FLAT(BASE_GICR_BASE, \
+ (BASE_GICR_SIZE * PLATFORM_CORE_COUNT),\
+ MT_DEVICE | MT_RO | MT_SECURE)
+#endif /* FVP_GICR_REGION_PROTECTION */
+
+/*
+ * Need to be mapped with write permissions in order to set a new non-volatile
+ * counter value.
+ */
+#define MAP_DEVICE2 MAP_REGION_FLAT(DEVICE2_BASE, \
+ DEVICE2_SIZE, \
+ MT_DEVICE | MT_RW | MT_SECURE)
+
+#if TRANSFER_LIST
+#ifdef FW_NS_HANDOFF_BASE
+#define MAP_FW_NS_HANDOFF MAP_REGION_FLAT(FW_NS_HANDOFF_BASE, \
+ FW_HANDOFF_SIZE, \
+ MT_MEMORY | MT_RW | MT_NS)
+#endif
+#endif
+
+/*
+ * Table of memory regions for various BL stages to map using the MMU.
+ * This doesn't include Trusted SRAM as setup_page_tables() already takes care
+ * of mapping it.
+ */
+#ifdef IMAGE_BL1
+const mmap_region_t plat_arm_mmap[] = {
+ ARM_MAP_SHARED_RAM,
+ V2M_MAP_FLASH0_RO,
+ V2M_MAP_IOFPGA,
+ MAP_DEVICE0,
+#if FVP_INTERCONNECT_DRIVER == FVP_CCN
+ MAP_DEVICE1,
+#endif
+#if TRUSTED_BOARD_BOOT
+ /* To access the Root of Trust Public Key registers. */
+ MAP_DEVICE2,
+ /* Map DRAM to authenticate NS_BL2U image. */
+ ARM_MAP_NS_DRAM1,
+#endif
+ {0}
+};
+#endif
+#ifdef IMAGE_BL2
+const mmap_region_t plat_arm_mmap[] = {
+ ARM_MAP_SHARED_RAM,
+ V2M_MAP_FLASH0_RW,
+ V2M_MAP_IOFPGA,
+ MAP_DEVICE0,
+#if FVP_INTERCONNECT_DRIVER == FVP_CCN
+ MAP_DEVICE1,
+#endif
+ ARM_MAP_NS_DRAM1,
+#ifdef __aarch64__
+ ARM_MAP_DRAM2,
+#endif
+ /*
+ * Required to load HW_CONFIG, SPMC and SPs to trusted DRAM.
+ */
+ ARM_MAP_TRUSTED_DRAM,
+
+ /*
+ * Required to load Event Log in TZC secured memory
+ */
+#if MEASURED_BOOT && (defined(SPD_tspd) || defined(SPD_opteed) || \
+defined(SPD_spmd))
+ ARM_MAP_EVENT_LOG_DRAM1,
+#endif /* MEASURED_BOOT && (SPD_tspd || SPD_opteed || SPD_spmd) */
+
+#if ENABLE_RME
+ ARM_MAP_RMM_DRAM,
+ ARM_MAP_GPT_L1_DRAM,
+#endif /* ENABLE_RME */
+#ifdef SPD_tspd
+ ARM_MAP_TSP_SEC_MEM,
+#endif
+#if TRUSTED_BOARD_BOOT
+ /* To access the Root of Trust Public Key registers. */
+ MAP_DEVICE2,
+#endif /* TRUSTED_BOARD_BOOT */
+
+#if CRYPTO_SUPPORT && !RESET_TO_BL2
+ /*
+ * To access shared the Mbed TLS heap while booting the
+ * system with Crypto support
+ */
+ ARM_MAP_BL1_RW,
+#endif /* CRYPTO_SUPPORT && !RESET_TO_BL2 */
+#if SPM_MM || SPMC_AT_EL3
+ ARM_SP_IMAGE_MMAP,
+#endif
+#if ARM_BL31_IN_DRAM
+ ARM_MAP_BL31_SEC_DRAM,
+#endif
+#ifdef SPD_opteed
+ ARM_MAP_OPTEE_CORE_MEM,
+ ARM_OPTEE_PAGEABLE_LOAD_MEM,
+#endif
+ {0}
+};
+#endif
+#ifdef IMAGE_BL2U
+const mmap_region_t plat_arm_mmap[] = {
+ MAP_DEVICE0,
+ V2M_MAP_IOFPGA,
+ {0}
+};
+#endif
+#ifdef IMAGE_BL31
+const mmap_region_t plat_arm_mmap[] = {
+ ARM_MAP_SHARED_RAM,
+#if USE_DEBUGFS
+ /* Required by devfip, can be removed if devfip is not used */
+ V2M_MAP_FLASH0_RW,
+#endif /* USE_DEBUGFS */
+ ARM_MAP_EL3_TZC_DRAM,
+ V2M_MAP_IOFPGA,
+ MAP_DEVICE0,
+#if FVP_GICR_REGION_PROTECTION
+ MAP_GICD_MEM,
+ MAP_GICR_MEM,
+#else
+ MAP_DEVICE1,
+#endif /* FVP_GICR_REGION_PROTECTION */
+ ARM_V2M_MAP_MEM_PROTECT,
+#if SPM_MM
+ ARM_SPM_BUF_EL3_MMAP,
+#endif
+#if ENABLE_RME
+ ARM_MAP_GPT_L1_DRAM,
+ ARM_MAP_EL3_RMM_SHARED_MEM,
+#endif
+#ifdef MAP_FW_NS_HANDOFF
+ MAP_FW_NS_HANDOFF,
+#endif
+ {0}
+};
+
+#if defined(IMAGE_BL31) && SPM_MM
+const mmap_region_t plat_arm_secure_partition_mmap[] = {
+ V2M_MAP_IOFPGA_EL0, /* for the UART */
+ MAP_REGION_FLAT(DEVICE0_BASE,
+ DEVICE0_SIZE,
+ MT_DEVICE | MT_RO | MT_SECURE | MT_USER),
+ ARM_SP_IMAGE_MMAP,
+ ARM_SP_IMAGE_NS_BUF_MMAP,
+ ARM_SP_IMAGE_RW_MMAP,
+ ARM_SPM_BUF_EL0_MMAP,
+ {0}
+};
+#endif
+#endif
+#ifdef IMAGE_BL32
+const mmap_region_t plat_arm_mmap[] = {
+#ifndef __aarch64__
+ ARM_MAP_SHARED_RAM,
+ ARM_V2M_MAP_MEM_PROTECT,
+#endif
+ V2M_MAP_IOFPGA,
+ MAP_DEVICE0,
+ MAP_DEVICE1,
+ {0}
+};
+#endif
+
+#ifdef IMAGE_RMM
+const mmap_region_t plat_arm_mmap[] = {
+ V2M_MAP_IOFPGA,
+ MAP_DEVICE0,
+ MAP_DEVICE1,
+ {0}
+};
+#endif
+
+ARM_CASSERT_MMAP
+
+#if FVP_INTERCONNECT_DRIVER != FVP_CCN
+static const int fvp_cci400_map[] = {
+ PLAT_FVP_CCI400_CLUS0_SL_PORT,
+ PLAT_FVP_CCI400_CLUS1_SL_PORT,
+};
+
+static const int fvp_cci5xx_map[] = {
+ PLAT_FVP_CCI5XX_CLUS0_SL_PORT,
+ PLAT_FVP_CCI5XX_CLUS1_SL_PORT,
+};
+
+static unsigned int get_interconnect_master(void)
+{
+ unsigned int master;
+ u_register_t mpidr;
+
+ mpidr = read_mpidr_el1();
+ master = ((arm_config.flags & ARM_CONFIG_FVP_SHIFTED_AFF) != 0U) ?
+ MPIDR_AFFLVL2_VAL(mpidr) : MPIDR_AFFLVL1_VAL(mpidr);
+
+ assert(master < FVP_CLUSTER_COUNT);
+ return master;
+}
+#endif
+
+#if defined(IMAGE_BL31) && SPM_MM
+/*
+ * Boot information passed to a secure partition during initialisation. Linear
+ * indices in MP information will be filled at runtime.
+ */
+static spm_mm_mp_info_t sp_mp_info[] = {
+ [0] = {0x80000000, 0},
+ [1] = {0x80000001, 0},
+ [2] = {0x80000002, 0},
+ [3] = {0x80000003, 0},
+ [4] = {0x80000100, 0},
+ [5] = {0x80000101, 0},
+ [6] = {0x80000102, 0},
+ [7] = {0x80000103, 0},
+};
+
+const spm_mm_boot_info_t plat_arm_secure_partition_boot_info = {
+ .h.type = PARAM_SP_IMAGE_BOOT_INFO,
+ .h.version = VERSION_1,
+ .h.size = sizeof(spm_mm_boot_info_t),
+ .h.attr = 0,
+ .sp_mem_base = ARM_SP_IMAGE_BASE,
+ .sp_mem_limit = ARM_SP_IMAGE_LIMIT,
+ .sp_image_base = ARM_SP_IMAGE_BASE,
+ .sp_stack_base = PLAT_SP_IMAGE_STACK_BASE,
+ .sp_heap_base = ARM_SP_IMAGE_HEAP_BASE,
+ .sp_ns_comm_buf_base = PLAT_SP_IMAGE_NS_BUF_BASE,
+ .sp_shared_buf_base = PLAT_SPM_BUF_BASE,
+ .sp_image_size = ARM_SP_IMAGE_SIZE,
+ .sp_pcpu_stack_size = PLAT_SP_IMAGE_STACK_PCPU_SIZE,
+ .sp_heap_size = ARM_SP_IMAGE_HEAP_SIZE,
+ .sp_ns_comm_buf_size = PLAT_SP_IMAGE_NS_BUF_SIZE,
+ .sp_shared_buf_size = PLAT_SPM_BUF_SIZE,
+ .num_sp_mem_regions = ARM_SP_IMAGE_NUM_MEM_REGIONS,
+ .num_cpus = PLATFORM_CORE_COUNT,
+ .mp_info = &sp_mp_info[0],
+};
+
+const struct mmap_region *plat_get_secure_partition_mmap(void *cookie)
+{
+ return plat_arm_secure_partition_mmap;
+}
+
+const struct spm_mm_boot_info *plat_get_secure_partition_boot_info(
+ void *cookie)
+{
+ return &plat_arm_secure_partition_boot_info;
+}
+#endif
+
+/*******************************************************************************
+ * A single boot loader stack is expected to work on both the Foundation FVP
+ * models and the two flavours of the Base FVP models (AEMv8 & Cortex). The
+ * SYS_ID register provides a mechanism for detecting the differences between
+ * these platforms. This information is stored in a per-BL array to allow the
+ * code to take the correct path.Per BL platform configuration.
+ ******************************************************************************/
+void __init fvp_config_setup(void)
+{
+ unsigned int rev, hbi, bld, arch, sys_id;
+
+ sys_id = mmio_read_32(V2M_SYSREGS_BASE + V2M_SYS_ID);
+ rev = (sys_id >> V2M_SYS_ID_REV_SHIFT) & V2M_SYS_ID_REV_MASK;
+ hbi = (sys_id >> V2M_SYS_ID_HBI_SHIFT) & V2M_SYS_ID_HBI_MASK;
+ bld = (sys_id >> V2M_SYS_ID_BLD_SHIFT) & V2M_SYS_ID_BLD_MASK;
+ arch = (sys_id >> V2M_SYS_ID_ARCH_SHIFT) & V2M_SYS_ID_ARCH_MASK;
+
+ if (arch != ARCH_MODEL) {
+ ERROR("This firmware is for FVP models\n");
+ panic();
+ }
+
+ /*
+ * The build field in the SYS_ID tells which variant of the GIC
+ * memory is implemented by the model.
+ */
+ switch (bld) {
+ case BLD_GIC_VE_MMAP:
+ ERROR("Legacy Versatile Express memory map for GIC peripheral"
+ " is not supported\n");
+ panic();
+ break;
+ case BLD_GIC_A53A57_MMAP:
+ break;
+ default:
+ ERROR("Unsupported board build %x\n", bld);
+ panic();
+ }
+
+ /*
+ * The hbi field in the SYS_ID is 0x020 for the Base FVP & 0x010
+ * for the Foundation FVP.
+ */
+ switch (hbi) {
+ case HBI_FOUNDATION_FVP:
+ arm_config.flags = 0;
+
+ /*
+ * Check for supported revisions of Foundation FVP
+ * Allow future revisions to run but emit warning diagnostic
+ */
+ switch (rev) {
+ case REV_FOUNDATION_FVP_V2_0:
+ case REV_FOUNDATION_FVP_V2_1:
+ case REV_FOUNDATION_FVP_v9_1:
+ case REV_FOUNDATION_FVP_v9_6:
+ break;
+ default:
+ WARN("Unrecognized Foundation FVP revision %x\n", rev);
+ break;
+ }
+ break;
+ case HBI_BASE_FVP:
+ arm_config.flags |= (ARM_CONFIG_BASE_MMAP | ARM_CONFIG_HAS_TZC);
+
+ /*
+ * Check for supported revisions
+ * Allow future revisions to run but emit warning diagnostic
+ */
+ switch (rev) {
+ case REV_BASE_FVP_V0:
+ arm_config.flags |= ARM_CONFIG_FVP_HAS_CCI400;
+ break;
+ case REV_BASE_FVP_REVC:
+ arm_config.flags |= (ARM_CONFIG_FVP_HAS_SMMUV3 |
+ ARM_CONFIG_FVP_HAS_CCI5XX);
+ break;
+ default:
+ WARN("Unrecognized Base FVP revision %x\n", rev);
+ break;
+ }
+ break;
+ default:
+ ERROR("Unsupported board HBI number 0x%x\n", hbi);
+ panic();
+ }
+
+ /*
+ * We assume that the presence of MT bit, and therefore shifted
+ * affinities, is uniform across the platform: either all CPUs, or no
+ * CPUs implement it.
+ */
+ if ((read_mpidr_el1() & MPIDR_MT_MASK) != 0U)
+ arm_config.flags |= ARM_CONFIG_FVP_SHIFTED_AFF;
+}
+
+
+void __init fvp_interconnect_init(void)
+{
+#if FVP_INTERCONNECT_DRIVER == FVP_CCN
+ if (ccn_get_part0_id(PLAT_ARM_CCN_BASE) != CCN_502_PART0_ID) {
+ ERROR("Unrecognized CCN variant detected. Only CCN-502 is supported");
+ panic();
+ }
+
+ plat_arm_interconnect_init();
+#else
+ uintptr_t cci_base = 0U;
+ const int *cci_map = NULL;
+ unsigned int map_size = 0U;
+
+ /* Initialize the right interconnect */
+ if ((arm_config.flags & ARM_CONFIG_FVP_HAS_CCI5XX) != 0U) {
+ cci_base = PLAT_FVP_CCI5XX_BASE;
+ cci_map = fvp_cci5xx_map;
+ map_size = ARRAY_SIZE(fvp_cci5xx_map);
+ } else if ((arm_config.flags & ARM_CONFIG_FVP_HAS_CCI400) != 0U) {
+ cci_base = PLAT_FVP_CCI400_BASE;
+ cci_map = fvp_cci400_map;
+ map_size = ARRAY_SIZE(fvp_cci400_map);
+ } else {
+ return;
+ }
+
+ assert(cci_base != 0U);
+ assert(cci_map != NULL);
+ cci_init(cci_base, cci_map, map_size);
+#endif
+}
+
+void fvp_interconnect_enable(void)
+{
+#if FVP_INTERCONNECT_DRIVER == FVP_CCN
+ plat_arm_interconnect_enter_coherency();
+#else
+ unsigned int master;
+
+ if ((arm_config.flags & (ARM_CONFIG_FVP_HAS_CCI400 |
+ ARM_CONFIG_FVP_HAS_CCI5XX)) != 0U) {
+ master = get_interconnect_master();
+ cci_enable_snoop_dvm_reqs(master);
+ }
+#endif
+}
+
+void fvp_interconnect_disable(void)
+{
+#if FVP_INTERCONNECT_DRIVER == FVP_CCN
+ plat_arm_interconnect_exit_coherency();
+#else
+ unsigned int master;
+
+ if ((arm_config.flags & (ARM_CONFIG_FVP_HAS_CCI400 |
+ ARM_CONFIG_FVP_HAS_CCI5XX)) != 0U) {
+ master = get_interconnect_master();
+ cci_disable_snoop_dvm_reqs(master);
+ }
+#endif
+}
+
+#if CRYPTO_SUPPORT
+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 /* CRYPTO_SUPPORT */
+
+void fvp_timer_init(void)
+{
+#if USE_SP804_TIMER
+ /* Enable the clock override for SP804 timer 0, which means that no
+ * clock dividers are applied and the raw (35MHz) clock will be used.
+ */
+ mmio_write_32(V2M_SP810_BASE, FVP_SP810_CTRL_TIM0_OV);
+
+ /* Initialize delay timer driver using SP804 dual timer 0 */
+ sp804_timer_init(V2M_SP804_TIMER0_BASE,
+ SP804_TIMER_CLKMULT, SP804_TIMER_CLKDIV);
+#else
+ generic_delay_timer_init();
+
+ /* Enable System level generic timer */
+ mmio_write_32(ARM_SYS_CNTCTL_BASE + CNTCR_OFF,
+ CNTCR_FCREQ(0U) | CNTCR_EN);
+#endif /* USE_SP804_TIMER */
+}
+
+/*****************************************************************************
+ * plat_is_smccc_feature_available() - This function checks whether SMCCC
+ * feature is availabile for platform.
+ * @fid: SMCCC function id
+ *
+ * Return SMC_ARCH_CALL_SUCCESS if SMCCC feature is available and
+ * SMC_ARCH_CALL_NOT_SUPPORTED otherwise.
+ *****************************************************************************/
+int32_t plat_is_smccc_feature_available(u_register_t fid)
+{
+ switch (fid) {
+ case SMCCC_ARCH_SOC_ID:
+ return SMC_ARCH_CALL_SUCCESS;
+ default:
+ return SMC_ARCH_CALL_NOT_SUPPORTED;
+ }
+}
+
+/* Get SOC version */
+int32_t plat_get_soc_version(void)
+{
+ return (int32_t)
+ (SOC_ID_SET_JEP_106(ARM_SOC_CONTINUATION_CODE,
+ ARM_SOC_IDENTIFICATION_CODE) |
+ (FVP_SOC_ID & SOC_ID_IMPL_DEF_MASK));
+}
+
+/* Get SOC revision */
+int32_t plat_get_soc_revision(void)
+{
+ unsigned int sys_id;
+
+ sys_id = mmio_read_32(V2M_SYSREGS_BASE + V2M_SYS_ID);
+ return (int32_t)(((sys_id >> V2M_SYS_ID_REV_SHIFT) &
+ V2M_SYS_ID_REV_MASK) & SOC_ID_REV_MASK);
+}
+
+#if ENABLE_RME
+/*
+ * Get a pointer to the RMM-EL3 Shared buffer and return it
+ * through the pointer passed as parameter.
+ *
+ * This function returns the size of the shared buffer.
+ */
+size_t plat_rmmd_get_el3_rmm_shared_mem(uintptr_t *shared)
+{
+ *shared = (uintptr_t)RMM_SHARED_BASE;
+
+ return (size_t)RMM_SHARED_SIZE;
+}
+
+int plat_rmmd_load_manifest(struct rmm_manifest *manifest)
+{
+ uint64_t checksum, num_banks;
+ struct ns_dram_bank *bank_ptr;
+
+ assert(manifest != NULL);
+
+ /* Get number of DRAM banks */
+ num_banks = FCONF_GET_PROPERTY(hw_config, dram_layout, num_banks);
+ assert(num_banks <= ARM_DRAM_NUM_BANKS);
+
+ manifest->version = RMMD_MANIFEST_VERSION;
+ manifest->padding = 0U; /* RES0 */
+ manifest->plat_data = (uintptr_t)NULL;
+ manifest->plat_dram.num_banks = num_banks;
+
+ /*
+ * Array ns_dram_banks[] follows ns_dram_info structure:
+ *
+ * +-----------------------------------+
+ * | offset | field | comment |
+ * +----------+-----------+------------+
+ * | 0 | version | 0x00000002 |
+ * +----------+-----------+------------+
+ * | 4 | padding | 0x00000000 |
+ * +----------+-----------+------------+
+ * | 8 | plat_data | NULL |
+ * +----------+-----------+------------+
+ * | 16 | num_banks | |
+ * +----------+-----------+ |
+ * | 24 | banks | plat_dram |
+ * +----------+-----------+ |
+ * | 32 | checksum | |
+ * +----------+-----------+------------+
+ * | 40 | base 0 | |
+ * +----------+-----------+ bank[0] |
+ * | 48 | size 0 | |
+ * +----------+-----------+------------+
+ * | 56 | base 1 | |
+ * +----------+-----------+ bank[1] |
+ * | 64 | size 1 | |
+ * +----------+-----------+------------+
+ */
+ bank_ptr = (struct ns_dram_bank *)
+ ((uintptr_t)&manifest->plat_dram.checksum +
+ sizeof(manifest->plat_dram.checksum));
+
+ manifest->plat_dram.banks = bank_ptr;
+
+ /* Calculate checksum of plat_dram structure */
+ checksum = num_banks + (uint64_t)bank_ptr;
+
+ /* Store FVP DRAM banks data in Boot Manifest */
+ for (unsigned long i = 0UL; i < num_banks; i++) {
+ uintptr_t base = FCONF_GET_PROPERTY(hw_config, dram_layout, dram_bank[i].base);
+ uint64_t size = FCONF_GET_PROPERTY(hw_config, dram_layout, dram_bank[i].size);
+
+ bank_ptr[i].base = base;
+ bank_ptr[i].size = size;
+
+ /* Update checksum */
+ checksum += base + size;
+ }
+
+ /* Checksum must be 0 */
+ manifest->plat_dram.checksum = ~checksum + 1UL;
+
+ return 0;
+}
+#endif /* ENABLE_RME */