1 /* 2 * Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <common/bl_common.h> 9 #include <common/desc_image_load.h> 10 #if defined(SPD_spmd) 11 #include <plat/arm/common/fconf_arm_sp_getter.h> 12 #endif 13 #include <plat/arm/common/plat_arm.h> 14 #include <plat/common/platform.h> 15 16 #pragma weak plat_flush_next_bl_params 17 #pragma weak plat_get_bl_image_load_info 18 #pragma weak plat_get_next_bl_params 19 20 static bl_params_t *next_bl_params_cpy_ptr; 21 22 /******************************************************************************* 23 * This function flushes the data structures so that they are visible 24 * in memory for the next BL image. 25 ******************************************************************************/ plat_flush_next_bl_params(void)26void plat_flush_next_bl_params(void) 27 { 28 assert(next_bl_params_cpy_ptr != NULL); 29 30 flush_bl_params_desc_args(bl_mem_params_desc_ptr, 31 bl_mem_params_desc_num, 32 next_bl_params_cpy_ptr); 33 } 34 35 #if defined(SPD_spmd) && BL2_ENABLE_SP_LOAD 36 /******************************************************************************* 37 * This function appends Secure Partitions to list of loadable images. 38 ******************************************************************************/ plat_add_sp_images_load_info(struct bl_load_info * load_info)39static void plat_add_sp_images_load_info(struct bl_load_info *load_info) 40 { 41 bl_load_info_node_t *curr_node = load_info->head; 42 bl_load_info_node_t *prev_node; 43 44 /* Shortcut for empty SP list */ 45 if (sp_mem_params_descs[0].image_id == 0) { 46 ERROR("No Secure Partition Image available\n"); 47 return; 48 } 49 50 /* Traverse through the bl images list */ 51 do { 52 curr_node = curr_node->next_load_info; 53 } while (curr_node->next_load_info != NULL); 54 55 prev_node = curr_node; 56 57 for (unsigned int index = 0; index < MAX_SP_IDS; index++) { 58 if (sp_mem_params_descs[index].image_id == 0) { 59 return; 60 } 61 curr_node = &sp_mem_params_descs[index].load_node_mem; 62 /* Populate the image information */ 63 curr_node->image_id = sp_mem_params_descs[index].image_id; 64 curr_node->image_info = &sp_mem_params_descs[index].image_info; 65 66 prev_node->next_load_info = curr_node; 67 prev_node = curr_node; 68 } 69 70 INFO("Reached Max number of SPs\n"); 71 } 72 #endif 73 74 /******************************************************************************* 75 * This function returns the list of loadable images. 76 ******************************************************************************/ plat_get_bl_image_load_info(void)77struct bl_load_info *plat_get_bl_image_load_info(void) 78 { 79 #if defined(SPD_spmd) && BL2_ENABLE_SP_LOAD 80 bl_load_info_t *bl_load_info; 81 82 bl_load_info = get_bl_load_info_from_mem_params_desc(); 83 plat_add_sp_images_load_info(bl_load_info); 84 85 return bl_load_info; 86 #else 87 return get_bl_load_info_from_mem_params_desc(); 88 #endif 89 } 90 91 /******************************************************************************* 92 * ARM helper function to return the list of executable images.Since the default 93 * descriptors are allocated within BL2 RW memory, this prevents BL31/BL32 94 * overlay of BL2 memory. Hence this function also copies the descriptors to a 95 * pre-allocated memory indicated by ARM_BL2_MEM_DESC_BASE. 96 ******************************************************************************/ arm_get_next_bl_params(void)97struct bl_params *arm_get_next_bl_params(void) 98 { 99 bl_mem_params_node_t *bl2_mem_params_descs_cpy 100 = (bl_mem_params_node_t *)ARM_BL2_MEM_DESC_BASE; 101 const bl_params_t *next_bl_params; 102 103 next_bl_params_cpy_ptr = 104 (bl_params_t *)(ARM_BL2_MEM_DESC_BASE + 105 (bl_mem_params_desc_num * sizeof(bl_mem_params_node_t))); 106 107 /* 108 * Copy the memory descriptors to ARM_BL2_MEM_DESC_BASE area. 109 */ 110 (void) memcpy(bl2_mem_params_descs_cpy, bl_mem_params_desc_ptr, 111 (bl_mem_params_desc_num * sizeof(bl_mem_params_node_t))); 112 113 /* 114 * Modify the global 'bl_mem_params_desc_ptr' to point to the 115 * copied location. 116 */ 117 bl_mem_params_desc_ptr = bl2_mem_params_descs_cpy; 118 119 next_bl_params = get_next_bl_params_from_mem_params_desc(); 120 assert(next_bl_params != NULL); 121 122 /* 123 * Copy 'next_bl_params' to the reserved location after the copied 124 * memory descriptors. 125 */ 126 (void) memcpy(next_bl_params_cpy_ptr, next_bl_params, 127 (sizeof(bl_params_t))); 128 129 populate_next_bl_params_config(next_bl_params_cpy_ptr); 130 131 return next_bl_params_cpy_ptr; 132 } 133 134 /******************************************************************************* 135 * This function returns the list of executable images 136 ******************************************************************************/ plat_get_next_bl_params(void)137struct bl_params *plat_get_next_bl_params(void) 138 { 139 return arm_get_next_bl_params(); 140 } 141 142