1 /* 2 * Copyright (c) 2021-2022, STMicroelectronics - All Rights Reserved 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 9 #include <common/debug.h> 10 #include <common/fdt_wrappers.h> 11 #include <drivers/io/io_storage.h> 12 #include <drivers/mmc.h> 13 #include <lib/fconf/fconf.h> 14 #include <lib/object_pool.h> 15 #include <libfdt.h> 16 #include <tools_share/firmware_image_package.h> 17 18 #include <platform_def.h> 19 #include <stm32mp_efi.h> 20 #include <stm32mp_fconf_getter.h> 21 #include <stm32mp_io_storage.h> 22 23 #if STM32MP_SDMMC || STM32MP_EMMC 24 static io_block_spec_t gpt_block_spec = { 25 .offset = 0U, 26 .length = 34U * MMC_BLOCK_SIZE, /* Size of GPT table */ 27 }; 28 #endif 29 30 #if (STM32MP_SDMMC || STM32MP_EMMC) && PSA_FWU_SUPPORT 31 io_block_spec_t metadata_block_spec = { 32 .offset = 0, /* To be filled at runtime */ 33 .length = 0, /* To be filled at runtime */ 34 }; 35 #endif /* (STM32MP_SDMMC || STM32MP_EMMC) && PSA_FWU_SUPPORT */ 36 37 /* By default, STM32 platforms load images from the FIP */ 38 struct plat_io_policy policies[MAX_NUMBER_IDS] = { 39 [FIP_IMAGE_ID] = { 40 .dev_handle = &storage_dev_handle, 41 .image_spec = (uintptr_t)&image_block_spec, 42 .img_type_guid = STM32MP_FIP_GUID, 43 .check = open_storage 44 }, 45 #if STM32MP_SDMMC || STM32MP_EMMC 46 [GPT_IMAGE_ID] = { 47 .dev_handle = &storage_dev_handle, 48 .image_spec = (uintptr_t)&gpt_block_spec, 49 .img_type_guid = NULL_GUID, 50 .check = open_storage 51 }, 52 #endif 53 #if (STM32MP_SDMMC || STM32MP_EMMC) && PSA_FWU_SUPPORT 54 [FWU_METADATA_IMAGE_ID] = { 55 .dev_handle = &storage_dev_handle, 56 .image_spec = (uintptr_t)&metadata_block_spec, 57 .img_type_guid = NULL_GUID, 58 .check = open_storage 59 }, 60 [BKUP_FWU_METADATA_IMAGE_ID] = { 61 .dev_handle = &storage_dev_handle, 62 .image_spec = (uintptr_t)&metadata_block_spec, 63 .img_type_guid = NULL_GUID, 64 .check = open_storage 65 }, 66 #endif /* (STM32MP_SDMMC || STM32MP_EMMC) && PSA_FWU_SUPPORT */ 67 }; 68 69 #define DEFAULT_UUID_NUMBER U(7) 70 71 #if TRUSTED_BOARD_BOOT 72 #define TBBR_UUID_NUMBER U(6) 73 #else 74 #define TBBR_UUID_NUMBER U(0) 75 #endif 76 77 #define FCONF_ST_IO_UUID_NUMBER (DEFAULT_UUID_NUMBER + \ 78 TBBR_UUID_NUMBER) 79 80 static io_uuid_spec_t fconf_stm32mp_uuids[FCONF_ST_IO_UUID_NUMBER]; 81 static OBJECT_POOL_ARRAY(fconf_stm32mp_uuids_pool, fconf_stm32mp_uuids); 82 83 struct policies_load_info { 84 unsigned int image_id; 85 const char *name; 86 }; 87 88 /* image id to property name table */ 89 static const struct policies_load_info load_info[FCONF_ST_IO_UUID_NUMBER] = { 90 {FW_CONFIG_ID, "fw_cfg_uuid"}, 91 {BL32_IMAGE_ID, "bl32_uuid"}, 92 {BL32_EXTRA1_IMAGE_ID, "bl32_extra1_uuid"}, 93 {BL32_EXTRA2_IMAGE_ID, "bl32_extra2_uuid"}, 94 {BL33_IMAGE_ID, "bl33_uuid"}, 95 {HW_CONFIG_ID, "hw_cfg_uuid"}, 96 {TOS_FW_CONFIG_ID, "tos_fw_cfg_uuid"}, 97 #if TRUSTED_BOARD_BOOT 98 {STM32MP_CONFIG_CERT_ID, "stm32mp_cfg_cert_uuid"}, 99 {TRUSTED_KEY_CERT_ID, "t_key_cert_uuid"}, 100 {TRUSTED_OS_FW_KEY_CERT_ID, "tos_fw_key_cert_uuid"}, 101 {NON_TRUSTED_FW_KEY_CERT_ID, "nt_fw_key_cert_uuid"}, 102 {TRUSTED_OS_FW_CONTENT_CERT_ID, "tos_fw_content_cert_uuid"}, 103 {NON_TRUSTED_FW_CONTENT_CERT_ID, "nt_fw_content_cert_uuid"}, 104 #endif /* TRUSTED_BOARD_BOOT */ 105 }; 106 107 int fconf_populate_stm32mp_io_policies(uintptr_t config) 108 { 109 int node; 110 unsigned int i; 111 112 /* As libfdt uses void *, we can't avoid this cast */ 113 const void *dtb = (void *)config; 114 115 /* Assert the node offset point to "st,io-fip-handle" compatible property */ 116 const char *compatible_str = "st,io-fip-handle"; 117 118 node = fdt_node_offset_by_compatible(dtb, -1, compatible_str); 119 if (node < 0) { 120 ERROR("FCONF: Can't find %s compatible in dtb\n", compatible_str); 121 return node; 122 } 123 124 /* Locate the uuid cells and read the value for all the load info uuid */ 125 for (i = 0U; i < FCONF_ST_IO_UUID_NUMBER; i++) { 126 union uuid_helper_t uuid_helper; 127 io_uuid_spec_t *uuid_ptr; 128 int err; 129 130 uuid_ptr = pool_alloc(&fconf_stm32mp_uuids_pool); 131 err = fdtw_read_uuid(dtb, node, load_info[i].name, 16, 132 (uint8_t *)&uuid_helper); 133 if (err < 0) { 134 WARN("FCONF: Read cell failed for %s\n", load_info[i].name); 135 return err; 136 } 137 138 VERBOSE("FCONF: stm32mp-io_policies.%s cell found with value = " 139 "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", 140 load_info[i].name, 141 uuid_helper.uuid_struct.time_low[0], uuid_helper.uuid_struct.time_low[1], 142 uuid_helper.uuid_struct.time_low[2], uuid_helper.uuid_struct.time_low[3], 143 uuid_helper.uuid_struct.time_mid[0], uuid_helper.uuid_struct.time_mid[1], 144 uuid_helper.uuid_struct.time_hi_and_version[0], 145 uuid_helper.uuid_struct.time_hi_and_version[1], 146 uuid_helper.uuid_struct.clock_seq_hi_and_reserved, 147 uuid_helper.uuid_struct.clock_seq_low, 148 uuid_helper.uuid_struct.node[0], uuid_helper.uuid_struct.node[1], 149 uuid_helper.uuid_struct.node[2], uuid_helper.uuid_struct.node[3], 150 uuid_helper.uuid_struct.node[4], uuid_helper.uuid_struct.node[5]); 151 152 uuid_ptr->uuid = uuid_helper.uuid_struct; 153 policies[load_info[i].image_id].image_spec = (uintptr_t)uuid_ptr; 154 policies[load_info[i].image_id].dev_handle = &fip_dev_handle; 155 policies[load_info[i].image_id].check = open_fip; 156 } 157 158 return 0; 159 } 160 161 FCONF_REGISTER_POPULATOR(TB_FW, stm32mp_io, fconf_populate_stm32mp_io_policies); 162