1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2020
4 * Sam Protsenko <joe.skb7@gmail.com>
5 */
6
7 #include <android_image.h>
8 #include <common.h>
9 #include <command.h>
10 #include <image.h>
11 #include <mapmem.h>
12
13 #define abootimg_addr() \
14 (_abootimg_addr == -1 ? image_load_addr : _abootimg_addr)
15
16 /* Please use abootimg_addr() macro to obtain the boot image address */
17 static ulong _abootimg_addr = -1;
18 static ulong _avendor_bootimg_addr = -1;
19
get_abootimg_addr(void)20 ulong get_abootimg_addr(void)
21 {
22 return (_abootimg_addr == -1 ? image_load_addr : _abootimg_addr);
23 }
24
get_avendor_bootimg_addr(void)25 ulong get_avendor_bootimg_addr(void)
26 {
27 return _avendor_bootimg_addr;
28 }
29
abootimg_get_ver(int argc,char * const argv[])30 static int abootimg_get_ver(int argc, char *const argv[])
31 {
32 const struct andr_boot_img_hdr_v0 *hdr;
33 int res = CMD_RET_SUCCESS;
34
35 if (argc > 1)
36 return CMD_RET_USAGE;
37
38 hdr = map_sysmem(abootimg_addr(), sizeof(*hdr));
39 if (!is_android_boot_image_header(hdr)) {
40 printf("Error: Boot Image header is incorrect\n");
41 res = CMD_RET_FAILURE;
42 goto exit;
43 }
44
45 if (argc == 0)
46 printf("%u\n", hdr->header_version);
47 else
48 env_set_ulong(argv[0], hdr->header_version);
49
50 exit:
51 unmap_sysmem(hdr);
52 return res;
53 }
54
abootimg_get_recovery_dtbo(int argc,char * const argv[])55 static int abootimg_get_recovery_dtbo(int argc, char *const argv[])
56 {
57 ulong addr;
58 u32 size;
59
60 if (argc > 2)
61 return CMD_RET_USAGE;
62
63 if (!android_image_get_dtbo(abootimg_addr(), &addr, &size))
64 return CMD_RET_FAILURE;
65
66 if (argc == 0) {
67 printf("%lx\n", addr);
68 } else {
69 env_set_hex(argv[0], addr);
70 if (argc == 2)
71 env_set_hex(argv[1], size);
72 }
73
74 return CMD_RET_SUCCESS;
75 }
76
abootimg_get_dtb_load_addr(int argc,char * const argv[])77 static int abootimg_get_dtb_load_addr(int argc, char *const argv[])
78 {
79 if (argc > 1)
80 return CMD_RET_USAGE;
81 struct andr_image_data img_data = {0};
82 const struct andr_boot_img_hdr_v0 *hdr;
83 const struct andr_vnd_boot_img_hdr *vhdr;
84
85 hdr = map_sysmem(abootimg_addr(), sizeof(*hdr));
86 if (get_avendor_bootimg_addr() != -1)
87 vhdr = map_sysmem(get_avendor_bootimg_addr(), sizeof(*vhdr));
88
89 if (!android_image_get_data(hdr, vhdr, &img_data)) {
90 if (get_avendor_bootimg_addr() != -1)
91 unmap_sysmem(vhdr);
92 unmap_sysmem(hdr);
93 return CMD_RET_FAILURE;
94 }
95
96 if (get_avendor_bootimg_addr() != -1)
97 unmap_sysmem(vhdr);
98 unmap_sysmem(hdr);
99
100 if (img_data.header_version < 2) {
101 printf("Error: header_version must be >= 2 for this\n");
102 return CMD_RET_FAILURE;
103 }
104
105 if (!img_data.dtb_load_addr) {
106 printf("Error: failed to read dtb_load_addr\n");
107 return CMD_RET_FAILURE;
108 }
109
110 if (argc == 0)
111 printf("%lx\n", (ulong)img_data.dtb_load_addr);
112 else
113 env_set_hex(argv[0], (ulong)img_data.dtb_load_addr);
114
115 return CMD_RET_SUCCESS;
116 }
117
abootimg_get_dtb_by_index(int argc,char * const argv[])118 static int abootimg_get_dtb_by_index(int argc, char *const argv[])
119 {
120 const char *index_str;
121 u32 num;
122 char *endp;
123 ulong addr;
124 u32 size;
125
126 if (argc < 1 || argc > 3)
127 return CMD_RET_USAGE;
128
129 index_str = argv[0] + strlen("--index=");
130 if (index_str[0] == '\0') {
131 printf("Error: Wrong index num\n");
132 return CMD_RET_FAILURE;
133 }
134
135 num = simple_strtoul(index_str, &endp, 0);
136 if (*endp != '\0') {
137 printf("Error: Wrong index num\n");
138 return CMD_RET_FAILURE;
139 }
140
141 if (!android_image_get_dtb_by_index(abootimg_addr(),
142 get_avendor_bootimg_addr(), num,
143 &addr, &size)) {
144 return CMD_RET_FAILURE;
145 }
146
147 if (argc == 1) {
148 printf("%lx\n", addr);
149 } else {
150 if (env_set_hex(argv[1], addr)) {
151 printf("Error: Can't set [addr_var]\n");
152 return CMD_RET_FAILURE;
153 }
154
155 if (argc == 3) {
156 if (env_set_hex(argv[2], size)) {
157 printf("Error: Can't set [size_var]\n");
158 return CMD_RET_FAILURE;
159 }
160 }
161 }
162
163 return CMD_RET_SUCCESS;
164 }
165
abootimg_get_dtb(int argc,char * const argv[])166 static int abootimg_get_dtb(int argc, char *const argv[])
167 {
168 if (argc < 1)
169 return CMD_RET_USAGE;
170
171 if (strstr(argv[0], "--index="))
172 return abootimg_get_dtb_by_index(argc, argv);
173
174 return CMD_RET_USAGE;
175 }
176
do_abootimg_addr(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])177 static int do_abootimg_addr(struct cmd_tbl *cmdtp, int flag, int argc,
178 char *const argv[])
179 {
180 char *endp;
181 ulong img_addr;
182
183 if (argc < 2 || argc > 3)
184 return CMD_RET_USAGE;
185
186 img_addr = hextoul(argv[1], &endp);
187 if (*endp != '\0') {
188 printf("Error: Wrong image address\n");
189 return CMD_RET_FAILURE;
190 }
191
192 _abootimg_addr = img_addr;
193
194 if (argc == 3) {
195 img_addr = simple_strtoul(argv[2], &endp, 16);
196 if (*endp != '\0') {
197 printf("Error: Wrong vendor image address\n");
198 return CMD_RET_FAILURE;
199 }
200
201 _avendor_bootimg_addr = img_addr;
202 }
203
204 return CMD_RET_SUCCESS;
205 }
206
do_abootimg_get(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])207 static int do_abootimg_get(struct cmd_tbl *cmdtp, int flag, int argc,
208 char *const argv[])
209 {
210 const char *param;
211
212 if (argc < 2)
213 return CMD_RET_USAGE;
214
215 param = argv[1];
216 argc -= 2;
217 argv += 2;
218 if (!strcmp(param, "ver"))
219 return abootimg_get_ver(argc, argv);
220 else if (!strcmp(param, "recovery_dtbo"))
221 return abootimg_get_recovery_dtbo(argc, argv);
222 else if (!strcmp(param, "dtb_load_addr"))
223 return abootimg_get_dtb_load_addr(argc, argv);
224 else if (!strcmp(param, "dtb"))
225 return abootimg_get_dtb(argc, argv);
226
227 return CMD_RET_USAGE;
228 }
229
do_abootimg_dump(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])230 static int do_abootimg_dump(struct cmd_tbl *cmdtp, int flag, int argc,
231 char *const argv[])
232 {
233 if (argc != 2)
234 return CMD_RET_USAGE;
235
236 if (!strcmp(argv[1], "dtb")) {
237 if (android_image_print_dtb_contents(abootimg_addr()))
238 return CMD_RET_FAILURE;
239 } else {
240 return CMD_RET_USAGE;
241 }
242
243 return CMD_RET_SUCCESS;
244 }
245
246 static struct cmd_tbl cmd_abootimg_sub[] = {
247 U_BOOT_CMD_MKENT(addr, 3, 1, do_abootimg_addr, "", ""),
248 U_BOOT_CMD_MKENT(dump, 2, 1, do_abootimg_dump, "", ""),
249 U_BOOT_CMD_MKENT(get, 5, 1, do_abootimg_get, "", ""),
250 };
251
do_abootimg(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])252 static int do_abootimg(struct cmd_tbl *cmdtp, int flag, int argc,
253 char *const argv[])
254 {
255 struct cmd_tbl *cp;
256
257 cp = find_cmd_tbl(argv[1], cmd_abootimg_sub,
258 ARRAY_SIZE(cmd_abootimg_sub));
259
260 /* Strip off leading 'abootimg' command argument */
261 argc--;
262 argv++;
263
264 if (!cp || argc > cp->maxargs)
265 return CMD_RET_USAGE;
266 if (flag == CMD_FLAG_REPEAT && !cmd_is_repeatable(cp))
267 return CMD_RET_SUCCESS;
268
269 return cp->cmd(cmdtp, flag, argc, argv);
270 }
271
272 U_BOOT_CMD(
273 abootimg, CONFIG_SYS_MAXARGS, 0, do_abootimg,
274 "manipulate Android Boot Image",
275 "addr <boot_img_addr> [<vendor_boot_img_addr>]>\n"
276 " - set the address in RAM where boot image is located\n"
277 " ($loadaddr is used by default)\n"
278 "abootimg dump dtb\n"
279 " - print info for all DT blobs in DTB area\n"
280 "abootimg get ver [varname]\n"
281 " - get header version\n"
282 "abootimg get recovery_dtbo [addr_var [size_var]]\n"
283 " - get address and size (hex) of recovery DTBO area in the image\n"
284 " [addr_var]: variable name to contain DTBO area address\n"
285 " [size_var]: variable name to contain DTBO area size\n"
286 "abootimg get dtb_load_addr [varname]\n"
287 " - get load address (hex) of DTB, from image header\n"
288 "abootimg get dtb --index=<num> [addr_var [size_var]]\n"
289 " - get address and size (hex) of DT blob in the image by index\n"
290 " <num>: index number of desired DT blob in DTB area\n"
291 " [addr_var]: variable name to contain DT blob address\n"
292 " [size_var]: variable name to contain DT blob size"
293 );
294