1 /* 2 * Copyright (c) 2020-2022, ARM Limited and Contributors. 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/desc_image_load.h> 11 #include <common/fdt_wrappers.h> 12 #include <drivers/io/io_storage.h> 13 #include <lib/object_pool.h> 14 #include <libfdt.h> 15 #include <plat/arm/common/arm_fconf_getter.h> 16 #include <plat/arm/common/arm_fconf_io_storage.h> 17 #include <plat/arm/common/fconf_arm_sp_getter.h> 18 #include <platform_def.h> 19 #include <tools_share/firmware_image_package.h> 20 21 #ifdef IMAGE_BL2 22 23 bl_mem_params_node_t sp_mem_params_descs[MAX_SP_IDS]; 24 25 struct arm_sp_t arm_sp; 26 27 int fconf_populate_arm_sp(uintptr_t config) 28 { 29 int sp_node, node, err; 30 union uuid_helper_t uuid_helper; 31 unsigned int index = 0; 32 uint32_t val32; 33 const unsigned int sip_start = SP_PKG1_ID; 34 unsigned int sip_index = sip_start; 35 #if defined(ARM_COT_dualroot) 36 const unsigned int sip_end = sip_start + MAX_SP_IDS / 2; 37 /* Allocating index range for platform SPs */ 38 const unsigned int plat_start = SP_PKG5_ID; 39 unsigned int plat_index = plat_start; 40 const unsigned int plat_end = plat_start + MAX_SP_IDS / 2; 41 bool is_plat_owned = false; 42 #endif /* ARM_COT_dualroot */ 43 44 /* As libfdt use void *, we can't avoid this cast */ 45 const void *dtb = (void *)config; 46 47 /* Assert the node offset point to "arm,sp" compatible property */ 48 const char *compatible_str = "arm,sp"; 49 50 node = fdt_node_offset_by_compatible(dtb, -1, compatible_str); 51 if (node < 0) { 52 ERROR("FCONF: Can't find %s in dtb\n", compatible_str); 53 return node; 54 } 55 56 fdt_for_each_subnode(sp_node, dtb, node) { 57 if (index == MAX_SP_IDS) { 58 ERROR("FCONF: Reached max number of SPs\n"); 59 return -1; 60 } 61 62 #if defined(ARM_COT_dualroot) 63 if ((sip_index == sip_end) || (plat_index == plat_end)) { 64 ERROR("FCONF: Reached max number of plat/SiP SPs\n"); 65 return -1; 66 } 67 #endif /* ARM_COT_dualroot */ 68 69 /* Read UUID */ 70 err = fdtw_read_uuid(dtb, sp_node, "uuid", 16, 71 (uint8_t *)&uuid_helper); 72 if (err < 0) { 73 ERROR("FCONF: cannot read SP uuid\n"); 74 return -1; 75 } 76 77 arm_sp.uuids[index] = uuid_helper; 78 79 /* Read Load address */ 80 err = fdt_read_uint32(dtb, sp_node, "load-address", &val32); 81 if (err < 0) { 82 ERROR("FCONF: cannot read SP load address\n"); 83 return -1; 84 } 85 arm_sp.load_addr[index] = val32; 86 87 VERBOSE("FCONF: %s UUID" 88 " %02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x" 89 " load_addr=%lx\n", 90 __func__, 91 uuid_helper.uuid_struct.time_low[0], uuid_helper.uuid_struct.time_low[1], 92 uuid_helper.uuid_struct.time_low[2], uuid_helper.uuid_struct.time_low[3], 93 uuid_helper.uuid_struct.time_mid[0], uuid_helper.uuid_struct.time_mid[1], 94 uuid_helper.uuid_struct.time_hi_and_version[0], 95 uuid_helper.uuid_struct.time_hi_and_version[1], 96 uuid_helper.uuid_struct.clock_seq_hi_and_reserved, 97 uuid_helper.uuid_struct.clock_seq_low, 98 uuid_helper.uuid_struct.node[0], uuid_helper.uuid_struct.node[1], 99 uuid_helper.uuid_struct.node[2], uuid_helper.uuid_struct.node[3], 100 uuid_helper.uuid_struct.node[4], uuid_helper.uuid_struct.node[5], 101 arm_sp.load_addr[index]); 102 103 /* Read owner field only for dualroot CoT */ 104 #if defined(ARM_COT_dualroot) 105 /* Owner is an optional field, no need to catch error */ 106 fdtw_read_string(dtb, sp_node, "owner", 107 arm_sp.owner[index], ARM_SP_OWNER_NAME_LEN); 108 109 /* If owner is empty mark it as SiP owned */ 110 if ((strncmp(arm_sp.owner[index], "SiP", 111 ARM_SP_OWNER_NAME_LEN) == 0) || 112 (strncmp(arm_sp.owner[index], "", 113 ARM_SP_OWNER_NAME_LEN) == 0)) { 114 is_plat_owned = false; 115 } else if (strcmp(arm_sp.owner[index], "Plat") == 0) { 116 is_plat_owned = true; 117 } else { 118 ERROR("FCONF: %s is not a valid SP owner\n", 119 arm_sp.owner[index]); 120 return -1; 121 } 122 /* 123 * Add SP information in mem param descriptor and IO policies 124 * structure. 125 */ 126 if (is_plat_owned) { 127 sp_mem_params_descs[index].image_id = plat_index; 128 policies[plat_index].image_spec = 129 (uintptr_t)&arm_sp.uuids[index]; 130 policies[plat_index].dev_handle = &fip_dev_handle; 131 policies[plat_index].check = open_fip; 132 plat_index++; 133 } else 134 #endif /* ARM_COT_dualroot */ 135 { 136 sp_mem_params_descs[index].image_id = sip_index; 137 policies[sip_index].image_spec = 138 (uintptr_t)&arm_sp.uuids[index]; 139 policies[sip_index].dev_handle = &fip_dev_handle; 140 policies[sip_index].check = open_fip; 141 sip_index++; 142 } 143 SET_PARAM_HEAD(&sp_mem_params_descs[index].image_info, 144 PARAM_IMAGE_BINARY, VERSION_2, 0); 145 sp_mem_params_descs[index].image_info.image_max_size = 146 ARM_SP_MAX_SIZE; 147 sp_mem_params_descs[index].next_handoff_image_id = 148 INVALID_IMAGE_ID; 149 sp_mem_params_descs[index].image_info.image_base = 150 arm_sp.load_addr[index]; 151 index++; 152 } 153 154 if ((sp_node < 0) && (sp_node != -FDT_ERR_NOTFOUND)) { 155 ERROR("%u: fdt_for_each_subnode(): %d\n", __LINE__, node); 156 return sp_node; 157 } 158 159 arm_sp.number_of_sp = index; 160 return 0; 161 } 162 163 FCONF_REGISTER_POPULATOR(TB_FW, arm_sp, fconf_populate_arm_sp); 164 165 #endif /* IMAGE_BL2 */ 166