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15#include <common.h>
16#include <command.h>
17#include <image.h>
18#include <mapmem.h>
19#include <watchdog.h>
20#if defined(CONFIG_BZIP2)
21#include <bzlib.h>
22#endif
23#include <asm/byteorder.h>
24#include <asm/io.h>
25
26#ifndef CONFIG_SYS_XIMG_LEN
27
28#define CONFIG_SYS_XIMG_LEN 0x800000
29#endif
30
31static int
32do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
33{
34 ulong addr = load_addr;
35 ulong dest = 0;
36 ulong data, len;
37 int verify;
38 int part = 0;
39#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
40 ulong count;
41 image_header_t *hdr = NULL;
42#endif
43#if defined(CONFIG_FIT)
44 const char *uname = NULL;
45 const void* fit_hdr;
46 int noffset;
47 const void *fit_data;
48 size_t fit_len;
49#endif
50#ifdef CONFIG_GZIP
51 uint unc_len = CONFIG_SYS_XIMG_LEN;
52#endif
53 uint8_t comp;
54
55 verify = getenv_yesno("verify");
56
57 if (argc > 1) {
58 addr = simple_strtoul(argv[1], NULL, 16);
59 }
60 if (argc > 2) {
61 part = simple_strtoul(argv[2], NULL, 16);
62#if defined(CONFIG_FIT)
63 uname = argv[2];
64#endif
65 }
66 if (argc > 3) {
67 dest = simple_strtoul(argv[3], NULL, 16);
68 }
69
70 switch (genimg_get_format((void *)addr)) {
71#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
72 case IMAGE_FORMAT_LEGACY:
73
74 printf("## Copying part %d from legacy image "
75 "at %08lx ...\n", part, addr);
76
77 hdr = (image_header_t *)addr;
78 if (!image_check_magic(hdr)) {
79 printf("Bad Magic Number\n");
80 return 1;
81 }
82
83 if (!image_check_hcrc(hdr)) {
84 printf("Bad Header Checksum\n");
85 return 1;
86 }
87#ifdef DEBUG
88 image_print_contents(hdr);
89#endif
90
91 if (!image_check_type(hdr, IH_TYPE_MULTI) &&
92 !image_check_type(hdr, IH_TYPE_SCRIPT)) {
93 printf("Wrong Image Type for %s command\n",
94 cmdtp->name);
95 return 1;
96 }
97
98 comp = image_get_comp(hdr);
99 if ((comp != IH_COMP_NONE) && (argc < 4)) {
100 printf("Must specify load address for %s command "
101 "with compressed image\n",
102 cmdtp->name);
103 return 1;
104 }
105
106 if (verify) {
107 printf(" Verifying Checksum ... ");
108 if (!image_check_dcrc(hdr)) {
109 printf("Bad Data CRC\n");
110 return 1;
111 }
112 printf("OK\n");
113 }
114
115 count = image_multi_count(hdr);
116 if (part >= count) {
117 printf("Bad Image Part\n");
118 return 1;
119 }
120
121 image_multi_getimg(hdr, part, &data, &len);
122 break;
123#endif
124#if defined(CONFIG_FIT)
125 case IMAGE_FORMAT_FIT:
126 if (uname == NULL) {
127 puts("No FIT subimage unit name\n");
128 return 1;
129 }
130
131 printf("## Copying '%s' subimage from FIT image "
132 "at %08lx ...\n", uname, addr);
133
134 fit_hdr = (const void *)addr;
135 if (!fit_check_format(fit_hdr)) {
136 puts("Bad FIT image format\n");
137 return 1;
138 }
139
140
141 noffset = fit_image_get_node(fit_hdr, uname);
142 if (noffset < 0) {
143 printf("Can't find '%s' FIT subimage\n", uname);
144 return 1;
145 }
146
147 if (fit_image_check_comp(fit_hdr, noffset, IH_COMP_NONE)
148 && (argc < 4)) {
149 printf("Must specify load address for %s command "
150 "with compressed image\n",
151 cmdtp->name);
152 return 1;
153 }
154
155
156 if (verify) {
157 if (!fit_image_verify(fit_hdr, noffset)) {
158 puts("Bad Data Hash\n");
159 return 1;
160 }
161 }
162
163
164 if (fit_image_get_data(fit_hdr, noffset,
165 &fit_data, &fit_len)) {
166 puts("Could not find script subimage data\n");
167 return 1;
168 }
169
170 if (fit_image_get_comp(fit_hdr, noffset, &comp)) {
171 puts("Could not find script subimage "
172 "compression type\n");
173 return 1;
174 }
175
176 data = (ulong)fit_data;
177 len = (ulong)fit_len;
178 break;
179#endif
180 default:
181 puts("Invalid image type for imxtract\n");
182 return 1;
183 }
184
185 if (argc > 3) {
186 switch (comp) {
187 case IH_COMP_NONE:
188#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
189 {
190 size_t l = len;
191 size_t tail;
192 void *to = (void *) dest;
193 void *from = (void *)data;
194
195 printf(" Loading part %d ... ", part);
196
197 while (l > 0) {
198 tail = (l > CHUNKSZ) ? CHUNKSZ : l;
199 WATCHDOG_RESET();
200 memmove(to, from, tail);
201 to += tail;
202 from += tail;
203 l -= tail;
204 }
205 }
206#else
207 printf(" Loading part %d ... ", part);
208 memmove((char *) dest, (char *)data, len);
209#endif
210 break;
211#ifdef CONFIG_GZIP
212 case IH_COMP_GZIP:
213 printf(" Uncompressing part %d ... ", part);
214 if (gunzip((void *) dest, unc_len,
215 (uchar *) data, &len) != 0) {
216 puts("GUNZIP ERROR - image not loaded\n");
217 return 1;
218 }
219 break;
220#endif
221#if defined(CONFIG_BZIP2) && defined(CONFIG_IMAGE_FORMAT_LEGACY)
222 case IH_COMP_BZIP2:
223 {
224 int i;
225
226 printf(" Uncompressing part %d ... ", part);
227
228
229
230
231
232 i = BZ2_bzBuffToBuffDecompress(
233 map_sysmem(ntohl(hdr->ih_load), 0),
234 &unc_len, (char *)data, len,
235 CONFIG_SYS_MALLOC_LEN < (4096 * 1024),
236 0);
237 if (i != BZ_OK) {
238 printf("BUNZIP2 ERROR %d - "
239 "image not loaded\n", i);
240 return 1;
241 }
242 }
243 break;
244#endif
245 default:
246 printf("Unimplemented compression type %d\n", comp);
247 return 1;
248 }
249 puts("OK\n");
250 }
251
252 flush_cache(dest, len);
253
254 setenv_hex("fileaddr", data);
255 setenv_hex("filesize", len);
256
257 return 0;
258}
259
260#ifdef CONFIG_SYS_LONGHELP
261static char imgextract_help_text[] =
262 "addr part [dest]\n"
263 " - extract <part> from legacy image at <addr> and copy to <dest>"
264#if defined(CONFIG_FIT)
265 "\n"
266 "addr uname [dest]\n"
267 " - extract <uname> subimage from FIT image at <addr> and copy to <dest>"
268#endif
269 "";
270#endif
271
272U_BOOT_CMD(
273 imxtract, 4, 1, do_imgextract,
274 "extract a part of a multi-image", imgextract_help_text
275);
276
