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