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[u-boot] / common / cmd_ximg.c
1 /*
2  * (C) Copyright 2000-2004
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * (C) Copyright 2003
6  * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
7  *
8  * SPDX-License-Identifier:     GPL-2.0+
9  */
10
11
12 /*
13  * Multi Image extract
14  */
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 /* use 8MByte as default max gunzip size */
28 #define CONFIG_SYS_XIMG_LEN     0x800000
29 #endif
30
31 static int
32 do_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                         printf("Wrong Image Type for %s command\n",
93                                         cmdtp->name);
94                         return 1;
95                 }
96
97                 comp = image_get_comp(hdr);
98                 if ((comp != IH_COMP_NONE) && (argc < 4)) {
99                         printf("Must specify load address for %s command "
100                                         "with compressed image\n",
101                                         cmdtp->name);
102                         return 1;
103                 }
104
105                 if (verify) {
106                         printf("   Verifying Checksum ... ");
107                         if (!image_check_dcrc(hdr)) {
108                                 printf("Bad Data CRC\n");
109                                 return 1;
110                         }
111                         printf("OK\n");
112                 }
113
114                 count = image_multi_count(hdr);
115                 if (part >= count) {
116                         printf("Bad Image Part\n");
117                         return 1;
118                 }
119
120                 image_multi_getimg(hdr, part, &data, &len);
121                 break;
122 #endif
123 #if defined(CONFIG_FIT)
124         case IMAGE_FORMAT_FIT:
125                 if (uname == NULL) {
126                         puts("No FIT subimage unit name\n");
127                         return 1;
128                 }
129
130                 printf("## Copying '%s' subimage from FIT image "
131                         "at %08lx ...\n", uname, addr);
132
133                 fit_hdr = (const void *)addr;
134                 if (!fit_check_format(fit_hdr)) {
135                         puts("Bad FIT image format\n");
136                         return 1;
137                 }
138
139                 /* get subimage node offset */
140                 noffset = fit_image_get_node(fit_hdr, uname);
141                 if (noffset < 0) {
142                         printf("Can't find '%s' FIT subimage\n", uname);
143                         return 1;
144                 }
145
146                 if (fit_image_check_comp(fit_hdr, noffset, IH_COMP_NONE)
147                     && (argc < 4)) {
148                         printf("Must specify load address for %s command "
149                                 "with compressed image\n",
150                                 cmdtp->name);
151                         return 1;
152                 }
153
154                 /* verify integrity */
155                 if (verify) {
156                         if (!fit_image_verify(fit_hdr, noffset)) {
157                                 puts("Bad Data Hash\n");
158                                 return 1;
159                         }
160                 }
161
162                 /* get subimage data address and length */
163                 if (fit_image_get_data(fit_hdr, noffset,
164                                         &fit_data, &fit_len)) {
165                         puts("Could not find script subimage data\n");
166                         return 1;
167                 }
168
169                 if (fit_image_get_comp(fit_hdr, noffset, &comp)) {
170                         puts("Could not find script subimage "
171                                 "compression type\n");
172                         return 1;
173                 }
174
175                 data = (ulong)fit_data;
176                 len = (ulong)fit_len;
177                 break;
178 #endif
179         default:
180                 puts("Invalid image type for imxtract\n");
181                 return 1;
182         }
183
184         if (argc > 3) {
185                 switch (comp) {
186                 case IH_COMP_NONE:
187 #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
188                         {
189                                 size_t l = len;
190                                 size_t tail;
191                                 void *to = (void *) dest;
192                                 void *from = (void *)data;
193
194                                 printf("   Loading part %d ... ", part);
195
196                                 while (l > 0) {
197                                         tail = (l > CHUNKSZ) ? CHUNKSZ : l;
198                                         WATCHDOG_RESET();
199                                         memmove(to, from, tail);
200                                         to += tail;
201                                         from += tail;
202                                         l -= tail;
203                                 }
204                         }
205 #else   /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
206                         printf("   Loading part %d ... ", part);
207                         memmove((char *) dest, (char *)data, len);
208 #endif  /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
209                         break;
210 #ifdef CONFIG_GZIP
211                 case IH_COMP_GZIP:
212                         printf("   Uncompressing part %d ... ", part);
213                         if (gunzip((void *) dest, unc_len,
214                                    (uchar *) data, &len) != 0) {
215                                 puts("GUNZIP ERROR - image not loaded\n");
216                                 return 1;
217                         }
218                         break;
219 #endif
220 #if defined(CONFIG_BZIP2) && defined(CONFIG_IMAGE_FORMAT_LEGACY)
221                 case IH_COMP_BZIP2:
222                         {
223                                 int i;
224
225                                 printf("   Uncompressing part %d ... ", part);
226                                 /*
227                                  * If we've got less than 4 MB of malloc()
228                                  * space, use slower decompression algorithm
229                                  * which requires at most 2300 KB of memory.
230                                  */
231                                 i = BZ2_bzBuffToBuffDecompress(
232                                         map_sysmem(ntohl(hdr->ih_load), 0),
233                                         &unc_len, (char *)data, len,
234                                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024),
235                                         0);
236                                 if (i != BZ_OK) {
237                                         printf("BUNZIP2 ERROR %d - "
238                                                 "image not loaded\n", i);
239                                         return 1;
240                                 }
241                         }
242                         break;
243 #endif /* CONFIG_BZIP2 */
244                 default:
245                         printf("Unimplemented compression type %d\n", comp);
246                         return 1;
247                 }
248                 puts("OK\n");
249         }
250
251         flush_cache(dest, len);
252
253         setenv_hex("fileaddr", data);
254         setenv_hex("filesize", len);
255
256         return 0;
257 }
258
259 #ifdef CONFIG_SYS_LONGHELP
260 static char imgextract_help_text[] =
261         "addr part [dest]\n"
262         "    - extract <part> from legacy image at <addr> and copy to <dest>"
263 #if defined(CONFIG_FIT)
264         "\n"
265         "addr uname [dest]\n"
266         "    - extract <uname> subimage from FIT image at <addr> and copy to <dest>"
267 #endif
268         "";
269 #endif
270
271 U_BOOT_CMD(
272         imxtract, 4, 1, do_imgextract,
273         "extract a part of a multi-image", imgextract_help_text
274 );