1 /*
2 * Copyright (c) 2024, Arm Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <plat/arm/common/plat_arm.h>
8 #include <platform_def.h>
9
arm_transfer_list_dyn_cfg_init(struct transfer_list_header * secure_tl)10 void arm_transfer_list_dyn_cfg_init(struct transfer_list_header *secure_tl)
11 {
12 struct transfer_list_entry *te;
13 bl_mem_params_node_t *next_param_node =
14 get_bl_mem_params_node(HW_CONFIG_ID);
15 assert(next_param_node != NULL);
16
17 /*
18 * The HW_CONFIG needs to be authenticated via the normal loading
19 * mechanism. Pre-allocate a TE for the configuration and update the
20 * load information so the configuration is loaded directly into the TE.
21 */
22 te = transfer_list_add(secure_tl, TL_TAG_FDT, PLAT_ARM_HW_CONFIG_SIZE,
23 NULL);
24 assert(te != NULL);
25
26 next_param_node->image_info.h.attr &= ~IMAGE_ATTRIB_SKIP_LOADING;
27 next_param_node->image_info.image_max_size = PLAT_ARM_HW_CONFIG_SIZE;
28 next_param_node->image_info.image_base =
29 (uintptr_t)transfer_list_entry_data(te);
30 }
31
arm_transfer_list_populate_ep_info(bl_mem_params_node_t * next_param_node,struct transfer_list_header * secure_tl)32 void arm_transfer_list_populate_ep_info(bl_mem_params_node_t *next_param_node,
33 struct transfer_list_header *secure_tl)
34 {
35 uint32_t next_exe_img_id;
36 entry_point_info_t *ep;
37 struct transfer_list_entry *te;
38
39 assert(next_param_node != NULL);
40
41 while ((next_exe_img_id = next_param_node->next_handoff_image_id) !=
42 INVALID_IMAGE_ID) {
43 next_param_node =
44 &bl_mem_params_desc_ptr[get_bl_params_node_index(
45 next_exe_img_id)];
46 assert(next_param_node != NULL);
47
48 te = transfer_list_add(secure_tl, TL_TAG_EXEC_EP_INFO64,
49 sizeof(entry_point_info_t),
50 &next_param_node->ep_info);
51 assert(te != NULL);
52
53 ep = transfer_list_entry_data(te);
54
55 if ((next_exe_img_id == BL32_IMAGE_ID) && SPMC_AT_EL3) {
56 /*
57 * Populate the BL32 image base, size and max limit in
58 * the entry point information, since there is no
59 * platform function to retrieve them in generic
60 * code. We choose arg2, arg3 and arg4 since the generic
61 * code uses arg1 for stashing the SP manifest size. The
62 * SPMC setup uses these arguments to update SP manifest
63 * with actual SP's base address and it size.
64 */
65 ep->args.arg2 = next_param_node->image_info.image_base;
66 ep->args.arg3 = next_param_node->image_info.image_size;
67 ep->args.arg4 =
68 next_param_node->image_info.image_base +
69 next_param_node->image_info.image_max_size;
70 }
71
72 next_exe_img_id = next_param_node->next_handoff_image_id;
73 }
74
75 flush_dcache_range((uintptr_t)secure_tl, secure_tl->size);
76 }
77