1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018-2019 NXP
*/
#include <common.h>
#include <errno.h>
#include <spl.h>
#include <asm/arch/image.h>
#include <asm/arch/sci/sci.h>
#define SEC_SECURE_RAM_BASE 0x31800000UL
#define SEC_SECURE_RAM_END_BASE (SEC_SECURE_RAM_BASE + 0xFFFFUL)
#define SECO_LOCAL_SEC_SEC_SECURE_RAM_BASE 0x60000000UL
#define SECO_PT 2U
#ifdef CONFIG_AHAB_BOOT
static int authenticate_image(struct boot_img_t *img, int image_index)
{
sc_faddr_t start, end;
sc_rm_mr_t mr;
int err;
int ret = 0;
debug("img %d, dst 0x%llx, src 0x%x, size 0x%x\n",
image_index, img->dst, img->offset, img->size);
/* Find the memreg and set permission for seco pt */
err = sc_rm_find_memreg(-1, &mr,
img->dst & ~(CONFIG_SYS_CACHELINE_SIZE - 1),
ALIGN(img->dst + img->size, CONFIG_SYS_CACHELINE_SIZE));
if (err) {
printf("can't find memreg for image: %d, err %d\n",
image_index, err);
return -ENOMEM;
}
err = sc_rm_get_memreg_info(-1, mr, &start, &end);
if (!err)
debug("memreg %u 0x%llx -- 0x%llx\n", mr, start, end);
err = sc_rm_set_memreg_permissions(-1, mr,
SECO_PT, SC_RM_PERM_FULL);
if (err) {
printf("set permission failed for img %d, error %d\n",
image_index, err);
return -EPERM;
}
err = sc_seco_authenticate(-1, SC_MISC_VERIFY_IMAGE,
1 << image_index);
if (err) {
printf("authenticate img %d failed, return %d\n",
image_index, err);
ret = -EIO;
}
err = sc_rm_set_memreg_permissions(-1, mr,
SECO_PT, SC_RM_PERM_NONE);
if (err) {
printf("remove permission failed for img %d, error %d\n",
image_index, err);
ret = -EPERM;
}
return ret;
}
#endif
static struct boot_img_t *read_auth_image(struct spl_image_info *spl_image,
struct spl_load_info *info,
struct container_hdr *container,
int image_index,
u32 container_sector)
{
struct boot_img_t *images;
ulong sector;
u32 sectors;
if (image_index > container->num_images) {
debug("Invalid image number\n");
return NULL;
}
images = (struct boot_img_t *)((u8 *)container +
sizeof(struct container_hdr));
if (images[image_index].offset % info->bl_len) {
printf("%s: image%d offset not aligned to %u\n",
__func__, image_index, info->bl_len);
return NULL;
}
sectors = roundup(images[image_index].size, info->bl_len) /
info->bl_len;
sector = images[image_index].offset / info->bl_len +
container_sector;
debug("%s: container: %p sector: %lu sectors: %u\n", __func__,
container, sector, sectors);
if (info->read(info, sector, sectors,
(void *)images[image_index].entry) != sectors) {
printf("%s wrong\n", __func__);
return NULL;
}
#ifdef CONFIG_AHAB_BOOT
if (authenticate_image(&images[image_index], image_index)) {
printf("Failed to authenticate image %d\n", image_index);
return NULL;
}
#endif
return &images[image_index];
}
static int read_auth_container(struct spl_image_info *spl_image,
struct spl_load_info *info, ulong sector)
{
struct container_hdr *container = NULL;
u16 length;
u32 sectors;
int i, size, ret = 0;
size = roundup(CONTAINER_HDR_ALIGNMENT, info->bl_len);
sectors = size / info->bl_len;
/*
* It will not override the ATF code, so safe to use it here,
* no need malloc
*/
container = (struct container_hdr *)spl_get_load_buffer(-size, size);
debug("%s: container: %p sector: %lu sectors: %u\n", __func__,
container, sector, sectors);
if (info->read(info, sector, sectors, container) != sectors)
return -EIO;
if (container->tag != 0x87 && container->version != 0x0) {
printf("Wrong container header");
return -ENOENT;
}
if (!container->num_images) {
printf("Wrong container, no image found");
return -ENOENT;
}
length = container->length_lsb + (container->length_msb << 8);
debug("Container length %u\n", length);
if (length > CONTAINER_HDR_ALIGNMENT) {
size = roundup(length, info->bl_len);
sectors = size / info->bl_len;
container = (struct container_hdr *)spl_get_load_buffer(-size, size);
debug("%s: container: %p sector: %lu sectors: %u\n",
__func__, container, sector, sectors);
if (info->read(info, sector, sectors, container) !=
sectors)
return -EIO;
}
#ifdef CONFIG_AHAB_BOOT
memcpy((void *)SEC_SECURE_RAM_BASE, (const void *)container,
ALIGN(length, CONFIG_SYS_CACHELINE_SIZE));
ret = sc_seco_authenticate(-1, SC_MISC_AUTH_CONTAINER,
SECO_LOCAL_SEC_SEC_SECURE_RAM_BASE);
if (ret) {
printf("authenticate container hdr failed, return %d\n", ret);
return ret;
}
#endif
for (i = 0; i < container->num_images; i++) {
struct boot_img_t *image = read_auth_image(spl_image, info,
container, i,
sector);
if (!image) {
ret = -EINVAL;
goto end_auth;
}
if (i == 0) {
spl_image->load_addr = image->dst;
spl_image->entry_point = image->entry;
}
}
end_auth:
#ifdef CONFIG_AHAB_BOOT
if (sc_seco_authenticate(-1, SC_MISC_REL_CONTAINER, 0))
printf("Error: release container failed!\n");
#endif
return ret;
}
int spl_load_imx_container(struct spl_image_info *spl_image,
struct spl_load_info *info, ulong sector)
{
return read_auth_container(spl_image, info, sector);
}
|
