blob: 05c0fcd27a6740e67813fc113654a3bd5d31c14e [file] [log] [blame]
Yatharth Kochar51f76f62016-09-12 16:10:33 +01001/*
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 ******************************************************************************/
47entry_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);
Dan Handley09c97c92017-04-18 14:46:23 +0100112 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;
Yatharth Kochar51f76f62016-09-12 16:10:33 +0100116
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}