1 /* 2 * Copyright (c) 2020, 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 const unsigned int sp_start_index = MAX_NUMBER_IDS - MAX_SP_IDS; 33 34 /* As libfdt use void *, we can't avoid this cast */ 35 const void *dtb = (void *)config; 36 37 /* Assert the node offset point to "arm,sp" compatible property */ 38 const char *compatible_str = "arm,sp"; 39 40 node = fdt_node_offset_by_compatible(dtb, -1, compatible_str); 41 if (node < 0) { 42 ERROR("FCONF: Can't find %s in dtb\n", compatible_str); 43 return node; 44 } 45 46 fdt_for_each_subnode(sp_node, dtb, node) { 47 err = fdtw_read_array(dtb, sp_node, "uuid", 4, 48 &uuid_helper.word); 49 if (err < 0) { 50 ERROR("FCONF: cannot read SP uuid\n"); 51 return -1; 52 } 53 54 arm_sp.uuids[index] = uuid_helper; 55 56 err = fdtw_read_cells(dtb, sp_node, "load-address", 1, 57 &arm_sp.load_addr[index]); 58 if (err < 0) { 59 ERROR("FCONF: cannot read SP load address\n"); 60 return -1; 61 } 62 63 VERBOSE("FCONF: %s UUID %x-%x-%x-%x load_addr=%lx\n", 64 __func__, 65 uuid_helper.word[0], 66 uuid_helper.word[1], 67 uuid_helper.word[2], 68 uuid_helper.word[3], 69 arm_sp.load_addr[index]); 70 71 /* Add SP information in mem param descriptor */ 72 sp_mem_params_descs[index].image_id = sp_start_index + index; 73 SET_PARAM_HEAD(&sp_mem_params_descs[index].image_info, 74 PARAM_IMAGE_BINARY, VERSION_2, 0); 75 sp_mem_params_descs[index].image_info.image_max_size = 76 ARM_SP_MAX_SIZE; 77 sp_mem_params_descs[index].next_handoff_image_id = 78 INVALID_IMAGE_ID; 79 sp_mem_params_descs[index].image_info.image_base = 80 arm_sp.load_addr[index]; 81 82 /* Add SP information in IO policies structure */ 83 policies[sp_start_index + index].image_spec = 84 (uintptr_t)&arm_sp.uuids[index]; 85 policies[sp_start_index + index].dev_handle = &fip_dev_handle; 86 policies[sp_start_index + index].check = open_fip; 87 88 index++; 89 90 if (index >= MAX_SP_IDS) { 91 ERROR("FCONF: reached max number of SPs\n"); 92 return -1; 93 } 94 } 95 96 if ((sp_node < 0) && (sp_node != -FDT_ERR_NOTFOUND)) { 97 ERROR("%d: fdt_for_each_subnode(): %d\n", __LINE__, node); 98 return sp_node; 99 } 100 101 arm_sp.number_of_sp = index; 102 return 0; 103 } 104 105 FCONF_REGISTER_POPULATOR(arm_sp, fconf_populate_arm_sp); 106 107 #endif /* IMAGE_BL2 */ 108