1 /*
2 * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8 #include <bl_common.h>
9 #include <debug.h>
10 #include <errno.h>
11 #include <plat_arm.h>
12 #include <platform_def.h>
13 #include <tbbr_img_desc.h>
14 #include <utils.h>
15
16 /* Struct to keep track of usable memory */
17 typedef struct bl1_mem_info {
18 uintptr_t mem_base;
19 unsigned int mem_size;
20 } bl1_mem_info_t;
21
22 bl1_mem_info_t fwu_addr_map_secure[] = {
23 {
24 .mem_base = ARM_SHARED_RAM_BASE,
25 .mem_size = ARM_SHARED_RAM_SIZE
26 },
27 {
28 .mem_size = 0
29 }
30 };
31
32 bl1_mem_info_t fwu_addr_map_non_secure[] = {
33 {
34 .mem_base = ARM_NS_DRAM1_BASE,
35 .mem_size = ARM_NS_DRAM1_SIZE
36 },
37 {
38 .mem_base = PLAT_ARM_NVM_BASE,
39 .mem_size = PLAT_ARM_NVM_SIZE
40 },
41 {
42 .mem_size = 0
43 }
44 };
45
bl1_plat_mem_check(uintptr_t mem_base,unsigned int mem_size,unsigned int flags)46 int bl1_plat_mem_check(uintptr_t mem_base,
47 unsigned int mem_size,
48 unsigned int flags)
49 {
50 unsigned int index = 0;
51 bl1_mem_info_t *mmap;
52
53 assert(mem_base);
54 assert(mem_size);
55 /*
56 * The caller of this function is responsible for checking upfront that
57 * the end address doesn't overflow. We double-check this in debug
58 * builds.
59 */
60 assert(!check_uptr_overflow(mem_base, mem_size - 1));
61
62 /*
63 * Check the given image source and size.
64 */
65 if (GET_SECURITY_STATE(flags) == SECURE)
66 mmap = fwu_addr_map_secure;
67 else
68 mmap = fwu_addr_map_non_secure;
69
70 while (mmap[index].mem_size) {
71 if ((mem_base >= mmap[index].mem_base) &&
72 ((mem_base + mem_size)
73 <= (mmap[index].mem_base +
74 mmap[index].mem_size)))
75 return 0;
76
77 index++;
78 }
79
80 return -ENOMEM;
81 }
82
83 /*******************************************************************************
84 * This function does linear search for image_id and returns image_desc.
85 ******************************************************************************/
bl1_plat_get_image_desc(unsigned int image_id)86 image_desc_t *bl1_plat_get_image_desc(unsigned int image_id)
87 {
88 unsigned int index = 0;
89
90 while (bl1_tbbr_image_descs[index].image_id != INVALID_IMAGE_ID) {
91 if (bl1_tbbr_image_descs[index].image_id == image_id)
92 return &bl1_tbbr_image_descs[index];
93 index++;
94 }
95
96 return NULL;
97 }
98