1 /* 2 * Copyright (c) 2016-2018, 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 #include <plat/common/platform.h> 11 12 #include <plat_arm.h> 13 14 #pragma weak plat_flush_next_bl_params 15 #pragma weak plat_get_bl_image_load_info 16 #pragma weak plat_get_next_bl_params 17 18 static bl_params_t *next_bl_params_cpy_ptr; 19 20 /******************************************************************************* 21 * This function flushes the data structures so that they are visible 22 * in memory for the next BL image. 23 ******************************************************************************/ 24 void plat_flush_next_bl_params(void) 25 { 26 assert(next_bl_params_cpy_ptr != NULL); 27 28 flush_bl_params_desc_args(bl_mem_params_desc_ptr, 29 bl_mem_params_desc_num, 30 next_bl_params_cpy_ptr); 31 } 32 33 /******************************************************************************* 34 * This function returns the list of loadable images. 35 ******************************************************************************/ 36 struct bl_load_info *plat_get_bl_image_load_info(void) 37 { 38 return get_bl_load_info_from_mem_params_desc(); 39 } 40 41 /******************************************************************************* 42 * ARM helper function to return the list of executable images.Since the default 43 * descriptors are allocated within BL2 RW memory, this prevents BL31/BL32 44 * overlay of BL2 memory. Hence this function also copies the descriptors to a 45 * pre-allocated memory indicated by ARM_BL2_MEM_DESC_BASE. 46 ******************************************************************************/ 47 struct bl_params *arm_get_next_bl_params(void) 48 { 49 bl_mem_params_node_t *bl2_mem_params_descs_cpy 50 = (bl_mem_params_node_t *)ARM_BL2_MEM_DESC_BASE; 51 const bl_params_t *next_bl_params; 52 53 next_bl_params_cpy_ptr = 54 (bl_params_t *)(ARM_BL2_MEM_DESC_BASE + 55 (bl_mem_params_desc_num * sizeof(bl_mem_params_node_t))); 56 57 /* 58 * Copy the memory descriptors to ARM_BL2_MEM_DESC_BASE area. 59 */ 60 (void) memcpy(bl2_mem_params_descs_cpy, bl_mem_params_desc_ptr, 61 (bl_mem_params_desc_num * sizeof(bl_mem_params_node_t))); 62 63 /* 64 * Modify the global 'bl_mem_params_desc_ptr' to point to the 65 * copied location. 66 */ 67 bl_mem_params_desc_ptr = bl2_mem_params_descs_cpy; 68 69 next_bl_params = get_next_bl_params_from_mem_params_desc(); 70 assert(next_bl_params != NULL); 71 72 /* 73 * Copy 'next_bl_params' to the reserved location after the copied 74 * memory descriptors. 75 */ 76 (void) memcpy(next_bl_params_cpy_ptr, next_bl_params, 77 (sizeof(bl_params_t))); 78 79 populate_next_bl_params_config(next_bl_params_cpy_ptr); 80 81 return next_bl_params_cpy_ptr; 82 } 83 84 /******************************************************************************* 85 * This function returns the list of executable images 86 ******************************************************************************/ 87 struct bl_params *plat_get_next_bl_params(void) 88 { 89 return arm_get_next_bl_params(); 90 } 91 92