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6#include <common.h>
7#include <errno.h>
8#include <log.h>
9#include <spl.h>
10#include <asm/mach-imx/image.h>
11#ifdef CONFIG_AHAB_BOOT
12#include <asm/arch/sci/sci.h>
13#endif
14
15#define SEC_SECURE_RAM_BASE 0x31800000UL
16#define SEC_SECURE_RAM_END_BASE (SEC_SECURE_RAM_BASE + 0xFFFFUL)
17#define SECO_LOCAL_SEC_SEC_SECURE_RAM_BASE 0x60000000UL
18
19#define SECO_PT 2U
20
21#ifdef CONFIG_AHAB_BOOT
22static int authenticate_image(struct boot_img_t *img, int image_index)
23{
24 sc_faddr_t start, end;
25 sc_rm_mr_t mr;
26 int err;
27 int ret = 0;
28
29 debug("img %d, dst 0x%x, src 0x%x, size 0x%x\n",
30 image_index, (uint32_t)img->dst, img->offset, img->size);
31
32
33 err = sc_rm_find_memreg(-1, &mr,
34 img->dst & ~(CONFIG_SYS_CACHELINE_SIZE - 1),
35 ALIGN(img->dst + img->size, CONFIG_SYS_CACHELINE_SIZE) - 1);
36
37 if (err) {
38 printf("can't find memreg for image %d load address 0x%x, error %d\n",
39 image_index, img->dst & ~(CONFIG_SYS_CACHELINE_SIZE - 1), err);
40 return -ENOMEM;
41 }
42
43 err = sc_rm_get_memreg_info(-1, mr, &start, &end);
44 if (!err)
45 debug("memreg %u 0x%x -- 0x%x\n", mr, start, end);
46
47 err = sc_rm_set_memreg_permissions(-1, mr,
48 SECO_PT, SC_RM_PERM_FULL);
49 if (err) {
50 printf("set permission failed for img %d, error %d\n",
51 image_index, err);
52 return -EPERM;
53 }
54
55 err = sc_seco_authenticate(-1, SC_SECO_VERIFY_IMAGE,
56 1 << image_index);
57 if (err) {
58 printf("authenticate img %d failed, return %d\n",
59 image_index, err);
60 ret = -EIO;
61 }
62
63 err = sc_rm_set_memreg_permissions(-1, mr,
64 SECO_PT, SC_RM_PERM_NONE);
65 if (err) {
66 printf("remove permission failed for img %d, error %d\n",
67 image_index, err);
68 ret = -EPERM;
69 }
70
71 return ret;
72}
73#endif
74
75static struct boot_img_t *read_auth_image(struct spl_image_info *spl_image,
76 struct spl_load_info *info,
77 struct container_hdr *container,
78 int image_index,
79 u32 container_sector)
80{
81 struct boot_img_t *images;
82 ulong sector;
83 u32 sectors;
84
85 if (image_index > container->num_images) {
86 debug("Invalid image number\n");
87 return NULL;
88 }
89
90 images = (struct boot_img_t *)((u8 *)container +
91 sizeof(struct container_hdr));
92
93 if (images[image_index].offset % info->bl_len) {
94 printf("%s: image%d offset not aligned to %u\n",
95 __func__, image_index, info->bl_len);
96 return NULL;
97 }
98
99 sectors = roundup(images[image_index].size, info->bl_len) /
100 info->bl_len;
101 sector = images[image_index].offset / info->bl_len +
102 container_sector;
103
104 debug("%s: container: %p sector: %lu sectors: %u\n", __func__,
105 container, sector, sectors);
106 if (info->read(info, sector, sectors,
107 (void *)images[image_index].entry) != sectors) {
108 printf("%s wrong\n", __func__);
109 return NULL;
110 }
111
112#ifdef CONFIG_AHAB_BOOT
113 if (authenticate_image(&images[image_index], image_index)) {
114 printf("Failed to authenticate image %d\n", image_index);
115 return NULL;
116 }
117#endif
118
119 return &images[image_index];
120}
121
122static int read_auth_container(struct spl_image_info *spl_image,
123 struct spl_load_info *info, ulong sector)
124{
125 struct container_hdr *container = NULL;
126 u16 length;
127 u32 sectors;
128 int i, size, ret = 0;
129
130 size = roundup(CONTAINER_HDR_ALIGNMENT, info->bl_len);
131 sectors = size / info->bl_len;
132
133
134
135
136
137 container = (struct container_hdr *)spl_get_load_buffer(-size, size);
138
139 debug("%s: container: %p sector: %lu sectors: %u\n", __func__,
140 container, sector, sectors);
141 if (info->read(info, sector, sectors, container) != sectors)
142 return -EIO;
143
144 if (container->tag != 0x87 && container->version != 0x0) {
145 printf("Wrong container header");
146 return -ENOENT;
147 }
148
149 if (!container->num_images) {
150 printf("Wrong container, no image found");
151 return -ENOENT;
152 }
153
154 length = container->length_lsb + (container->length_msb << 8);
155 debug("Container length %u\n", length);
156
157 if (length > CONTAINER_HDR_ALIGNMENT) {
158 size = roundup(length, info->bl_len);
159 sectors = size / info->bl_len;
160
161 container = (struct container_hdr *)spl_get_load_buffer(-size, size);
162
163 debug("%s: container: %p sector: %lu sectors: %u\n",
164 __func__, container, sector, sectors);
165 if (info->read(info, sector, sectors, container) !=
166 sectors)
167 return -EIO;
168 }
169
170#ifdef CONFIG_AHAB_BOOT
171 memcpy((void *)SEC_SECURE_RAM_BASE, (const void *)container,
172 ALIGN(length, CONFIG_SYS_CACHELINE_SIZE));
173
174 ret = sc_seco_authenticate(-1, SC_SECO_AUTH_CONTAINER,
175 SECO_LOCAL_SEC_SEC_SECURE_RAM_BASE);
176 if (ret) {
177 printf("authenticate container hdr failed, return %d\n", ret);
178 return ret;
179 }
180#endif
181
182 for (i = 0; i < container->num_images; i++) {
183 struct boot_img_t *image = read_auth_image(spl_image, info,
184 container, i,
185 sector);
186
187 if (!image) {
188 ret = -EINVAL;
189 goto end_auth;
190 }
191
192 if (i == 0) {
193 spl_image->load_addr = image->dst;
194 spl_image->entry_point = image->entry;
195 }
196 }
197
198end_auth:
199#ifdef CONFIG_AHAB_BOOT
200 if (sc_seco_authenticate(-1, SC_SECO_REL_CONTAINER, 0))
201 printf("Error: release container failed!\n");
202#endif
203 return ret;
204}
205
206int spl_load_imx_container(struct spl_image_info *spl_image,
207 struct spl_load_info *info, ulong sector)
208{
209 return read_auth_container(spl_image, info, sector);
210}
211
