1 /* 2 * Copyright (c) 2019-2020, ARM Limited. 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 <lib/object_pool.h> 13 #include <libfdt.h> 14 #include <tools_share/firmware_image_package.h> 15 16 #include <plat/arm/common/arm_fconf_getter.h> 17 #include <plat/arm/common/arm_fconf_io_storage.h> 18 #include <platform_def.h> 19 20 const io_block_spec_t fip_block_spec = { 21 .offset = PLAT_ARM_FIP_BASE, 22 .length = PLAT_ARM_FIP_MAX_SIZE 23 }; 24 25 const io_uuid_spec_t arm_uuid_spec[MAX_NUMBER_IDS] = { 26 [BL2_IMAGE_ID] = {UUID_TRUSTED_BOOT_FIRMWARE_BL2}, 27 [TB_FW_CONFIG_ID] = {UUID_TB_FW_CONFIG}, 28 #if TRUSTED_BOARD_BOOT 29 [TRUSTED_BOOT_FW_CERT_ID] = {UUID_TRUSTED_BOOT_FW_CERT}, 30 #endif /* TRUSTED_BOARD_BOOT */ 31 }; 32 33 /* By default, ARM platforms load images from the FIP */ 34 struct plat_io_policy policies[MAX_NUMBER_IDS] = { 35 [FIP_IMAGE_ID] = { 36 &memmap_dev_handle, 37 (uintptr_t)&fip_block_spec, 38 open_memmap 39 }, 40 [BL2_IMAGE_ID] = { 41 &fip_dev_handle, 42 (uintptr_t)&arm_uuid_spec[BL2_IMAGE_ID], 43 open_fip 44 }, 45 [TB_FW_CONFIG_ID] = { 46 &fip_dev_handle, 47 (uintptr_t)&arm_uuid_spec[TB_FW_CONFIG_ID], 48 open_fip 49 }, 50 #if TRUSTED_BOARD_BOOT 51 [TRUSTED_BOOT_FW_CERT_ID] = { 52 &fip_dev_handle, 53 (uintptr_t)&arm_uuid_spec[TRUSTED_BOOT_FW_CERT_ID], 54 open_fip 55 }, 56 #endif /* TRUSTED_BOARD_BOOT */ 57 }; 58 59 #ifdef IMAGE_BL2 60 61 #if TRUSTED_BOARD_BOOT 62 #define FCONF_ARM_IO_UUID_NUMBER U(19) 63 #else 64 #define FCONF_ARM_IO_UUID_NUMBER U(10) 65 #endif 66 67 static io_uuid_spec_t fconf_arm_uuids[FCONF_ARM_IO_UUID_NUMBER]; 68 static OBJECT_POOL_ARRAY(fconf_arm_uuids_pool, fconf_arm_uuids); 69 70 struct policies_load_info { 71 unsigned int image_id; 72 const char *name; 73 }; 74 75 /* image id to property name table */ 76 static const struct policies_load_info load_info[FCONF_ARM_IO_UUID_NUMBER] = { 77 {SCP_BL2_IMAGE_ID, "scp_bl2_uuid"}, 78 {BL31_IMAGE_ID, "bl31_uuid"}, 79 {BL32_IMAGE_ID, "bl32_uuid"}, 80 {BL32_EXTRA1_IMAGE_ID, "bl32_extra1_uuid"}, 81 {BL32_EXTRA2_IMAGE_ID, "bl32_extra2_uuid"}, 82 {BL33_IMAGE_ID, "bl33_uuid"}, 83 {HW_CONFIG_ID, "hw_cfg_uuid"}, 84 {SOC_FW_CONFIG_ID, "soc_fw_cfg_uuid"}, 85 {TOS_FW_CONFIG_ID, "tos_fw_cfg_uuid"}, 86 {NT_FW_CONFIG_ID, "nt_fw_cfg_uuid"}, 87 #if TRUSTED_BOARD_BOOT 88 {TRUSTED_KEY_CERT_ID, "t_key_cert_uuid"}, 89 {SCP_FW_KEY_CERT_ID, "scp_fw_key_uuid"}, 90 {SOC_FW_KEY_CERT_ID, "soc_fw_key_uuid"}, 91 {TRUSTED_OS_FW_KEY_CERT_ID, "tos_fw_key_cert_uuid"}, 92 {NON_TRUSTED_FW_KEY_CERT_ID, "nt_fw_key_cert_uuid"}, 93 {SCP_FW_CONTENT_CERT_ID, "scp_fw_content_cert_uuid"}, 94 {SOC_FW_CONTENT_CERT_ID, "soc_fw_content_cert_uuid"}, 95 {TRUSTED_OS_FW_CONTENT_CERT_ID, "tos_fw_content_cert_uuid"}, 96 {NON_TRUSTED_FW_CONTENT_CERT_ID, "nt_fw_content_cert_uuid"}, 97 #endif /* TRUSTED_BOARD_BOOT */ 98 }; 99 100 int fconf_populate_arm_io_policies(uintptr_t config) 101 { 102 int err, node; 103 unsigned int i; 104 105 union uuid_helper_t uuid_helper; 106 io_uuid_spec_t *uuid_ptr; 107 108 /* As libfdt uses void *, we can't avoid this cast */ 109 const void *dtb = (void *)config; 110 111 /* Assert the node offset point to "arm,io-fip-handle" compatible property */ 112 const char *compatible_str = "arm,io-fip-handle"; 113 node = fdt_node_offset_by_compatible(dtb, -1, compatible_str); 114 if (node < 0) { 115 ERROR("FCONF: Can't find %s compatible in dtb\n", compatible_str); 116 return node; 117 } 118 119 /* Locate the uuid cells and read the value for all the load info uuid */ 120 for (i = 0; i < FCONF_ARM_IO_UUID_NUMBER; i++) { 121 uuid_ptr = pool_alloc(&fconf_arm_uuids_pool); 122 err = fdtw_read_array(dtb, node, load_info[i].name, 4, &uuid_helper.word); 123 if (err < 0) { 124 WARN("FCONF: Read cell failed for %s\n", load_info[i].name); 125 return err; 126 } 127 128 VERBOSE("FCONF: arm-io_policies.%s cell found with value = 0x%x 0x%x 0x%x 0x%x\n", 129 load_info[i].name, 130 uuid_helper.word[0], uuid_helper.word[1], 131 uuid_helper.word[2], uuid_helper.word[3]); 132 133 uuid_ptr->uuid = uuid_helper.uuid_struct; 134 policies[load_info[i].image_id].image_spec = (uintptr_t)uuid_ptr; 135 policies[load_info[i].image_id].dev_handle = &fip_dev_handle; 136 policies[load_info[i].image_id].check = open_fip; 137 } 138 return 0; 139 } 140 141 FCONF_REGISTER_POPULATOR(arm_io, fconf_populate_arm_io_policies); 142 143 #endif /* IMAGE_BL2 */ 144