1 /* 2 * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * Redistributions of source code must retain the above copyright notice, this 8 * list of conditions and the following disclaimer. 9 * 10 * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * Neither the name of ARM nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <arch.h> 32 #include <arch_helpers.h> 33 #include <assert.h> 34 #include <auth_mod.h> 35 #include <bl_common.h> 36 #include <debug.h> 37 #include <desc_image_load.h> 38 #include <platform.h> 39 #include <platform_def.h> 40 #include <stdint.h> 41 42 43 /******************************************************************************* 44 * This function loads SCP_BL2/BL3x images and returns the ep_info for 45 * the next executable image. 46 ******************************************************************************/ 47 entry_point_info_t *bl2_load_images(void) 48 { 49 bl_params_t *bl2_to_next_bl_params; 50 bl_load_info_t *bl2_load_info; 51 const bl_load_info_node_t *bl2_node_info; 52 int plat_setup_done = 0; 53 int err; 54 55 /* 56 * Get information about the images to load. 57 */ 58 bl2_load_info = plat_get_bl_image_load_info(); 59 assert(bl2_load_info); 60 assert(bl2_load_info->head); 61 assert(bl2_load_info->h.type == PARAM_BL_LOAD_INFO); 62 assert(bl2_load_info->h.version >= VERSION_2); 63 bl2_node_info = bl2_load_info->head; 64 65 while (bl2_node_info) { 66 /* 67 * Perform platform setup before loading the image, 68 * if indicated in the image attributes AND if NOT 69 * already done before. 70 */ 71 if (bl2_node_info->image_info->h.attr & IMAGE_ATTRIB_PLAT_SETUP) { 72 if (plat_setup_done) { 73 WARN("BL2: Platform setup already done!!\n"); 74 } else { 75 INFO("BL2: Doing platform setup\n"); 76 bl2_platform_setup(); 77 plat_setup_done = 1; 78 } 79 } 80 81 if (!(bl2_node_info->image_info->h.attr & IMAGE_ATTRIB_SKIP_LOADING)) { 82 INFO("BL2: Loading image id %d\n", bl2_node_info->image_id); 83 err = load_auth_image(bl2_node_info->image_id, 84 bl2_node_info->image_info); 85 if (err) { 86 ERROR("BL2: Failed to load image (%i)\n", err); 87 plat_error_handler(err); 88 } 89 } else { 90 INFO("BL2: Skip loading image id %d\n", bl2_node_info->image_id); 91 } 92 93 /* Allow platform to handle image information. */ 94 err = bl2_plat_handle_post_image_load(bl2_node_info->image_id); 95 if (err) { 96 ERROR("BL2: Failure in post image load handling (%i)\n", err); 97 plat_error_handler(err); 98 } 99 100 /* Go to next image */ 101 bl2_node_info = bl2_node_info->next_load_info; 102 } 103 104 /* 105 * Get information to pass to the next image. 106 */ 107 bl2_to_next_bl_params = plat_get_next_bl_params(); 108 assert(bl2_to_next_bl_params); 109 assert(bl2_to_next_bl_params->head); 110 assert(bl2_to_next_bl_params->h.type == PARAM_BL_PARAMS); 111 assert(bl2_to_next_bl_params->h.version >= VERSION_2); 112 assert(bl2_to_next_bl_params->head->ep_info); 113 114 /* Populate arg0 for the next BL image */ 115 bl2_to_next_bl_params->head->ep_info->args.arg0 = (u_register_t)bl2_to_next_bl_params; 116 117 /* Flush the parameters to be passed to next image */ 118 plat_flush_next_bl_params(); 119 120 return bl2_to_next_bl_params->head->ep_info; 121 } 122