1 /* 2 * Copyright (c) 2020-2021, 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 bool is_plat_owned = false; 34 const unsigned int sip_start = SP_PKG1_ID; 35 unsigned int sip_index = sip_start; 36 const unsigned int sip_end = sip_start + MAX_SP_IDS / 2; 37 const unsigned int plat_start = SP_PKG5_ID; 38 unsigned int plat_index = plat_start; 39 const unsigned int plat_end = plat_start + MAX_SP_IDS / 2; 40 41 /* As libfdt use void *, we can't avoid this cast */ 42 const void *dtb = (void *)config; 43 44 /* Assert the node offset point to "arm,sp" compatible property */ 45 const char *compatible_str = "arm,sp"; 46 47 node = fdt_node_offset_by_compatible(dtb, -1, compatible_str); 48 if (node < 0) { 49 ERROR("FCONF: Can't find %s in dtb\n", compatible_str); 50 return node; 51 } 52 53 fdt_for_each_subnode(sp_node, dtb, node) { 54 if ((index == MAX_SP_IDS) || (sip_index == sip_end) 55 || (plat_index == plat_end)) { 56 ERROR("FCONF: Reached max number of SPs\n"); 57 return -1; 58 } 59 60 /* Read UUID */ 61 err = fdtw_read_uuid(dtb, sp_node, "uuid", 16, 62 (uint8_t *)&uuid_helper); 63 if (err < 0) { 64 ERROR("FCONF: cannot read SP uuid\n"); 65 return -1; 66 } 67 68 arm_sp.uuids[index] = uuid_helper; 69 VERBOSE("FCONF: %s UUID" 70 " %02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x" 71 " load_addr=%lx\n", 72 __func__, 73 uuid_helper.uuid_struct.time_low[0], uuid_helper.uuid_struct.time_low[1], 74 uuid_helper.uuid_struct.time_low[2], uuid_helper.uuid_struct.time_low[3], 75 uuid_helper.uuid_struct.time_mid[0], uuid_helper.uuid_struct.time_mid[1], 76 uuid_helper.uuid_struct.time_hi_and_version[0], 77 uuid_helper.uuid_struct.time_hi_and_version[1], 78 uuid_helper.uuid_struct.clock_seq_hi_and_reserved, 79 uuid_helper.uuid_struct.clock_seq_low, 80 uuid_helper.uuid_struct.node[0], uuid_helper.uuid_struct.node[1], 81 uuid_helper.uuid_struct.node[2], uuid_helper.uuid_struct.node[3], 82 uuid_helper.uuid_struct.node[4], uuid_helper.uuid_struct.node[5], 83 arm_sp.load_addr[index]); 84 85 /* Read Load address */ 86 err = fdt_read_uint32(dtb, sp_node, "load-address", &val32); 87 if (err < 0) { 88 ERROR("FCONF: cannot read SP load address\n"); 89 return -1; 90 } 91 arm_sp.load_addr[index] = val32; 92 93 /* Read owner field only for dualroot CoT */ 94 #if defined(ARM_COT_dualroot) 95 /* Owner is an optional field, no need to catch error */ 96 fdtw_read_string(dtb, sp_node, "owner", 97 arm_sp.owner[index], ARM_SP_OWNER_NAME_LEN); 98 #endif 99 /* If owner is empty mark it as SiP owned */ 100 if ((strncmp(arm_sp.owner[index], "SiP", 101 ARM_SP_OWNER_NAME_LEN) == 0) || 102 (strncmp(arm_sp.owner[index], "", 103 ARM_SP_OWNER_NAME_LEN) == 0)) { 104 is_plat_owned = false; 105 } else if (strcmp(arm_sp.owner[index], "Plat") == 0) { 106 is_plat_owned = true; 107 } else { 108 ERROR("FCONF: %s is not a valid SP owner\n", 109 arm_sp.owner[index]); 110 return -1; 111 } 112 /* 113 * Add SP information in mem param descriptor and IO policies 114 * structure. 115 */ 116 if (is_plat_owned) { 117 sp_mem_params_descs[index].image_id = plat_index; 118 policies[plat_index].image_spec = 119 (uintptr_t)&arm_sp.uuids[index]; 120 policies[plat_index].dev_handle = &fip_dev_handle; 121 policies[plat_index].check = open_fip; 122 plat_index++; 123 } else { 124 sp_mem_params_descs[index].image_id = sip_index; 125 policies[sip_index].image_spec = 126 (uintptr_t)&arm_sp.uuids[index]; 127 policies[sip_index].dev_handle = &fip_dev_handle; 128 policies[sip_index].check = open_fip; 129 sip_index++; 130 } 131 SET_PARAM_HEAD(&sp_mem_params_descs[index].image_info, 132 PARAM_IMAGE_BINARY, VERSION_2, 0); 133 sp_mem_params_descs[index].image_info.image_max_size = 134 ARM_SP_MAX_SIZE; 135 sp_mem_params_descs[index].next_handoff_image_id = 136 INVALID_IMAGE_ID; 137 sp_mem_params_descs[index].image_info.image_base = 138 arm_sp.load_addr[index]; 139 index++; 140 } 141 142 if ((sp_node < 0) && (sp_node != -FDT_ERR_NOTFOUND)) { 143 ERROR("%u: fdt_for_each_subnode(): %d\n", __LINE__, node); 144 return sp_node; 145 } 146 147 arm_sp.number_of_sp = index; 148 return 0; 149 } 150 151 FCONF_REGISTER_POPULATOR(TB_FW, arm_sp, fconf_populate_arm_sp); 152 153 #endif /* IMAGE_BL2 */ 154