summaryrefslogtreecommitdiff
path: root/cmd/ximg.c
blob: a9481004f0369ebf95ebf4b6ee9f6fd25b806f9d (plain)
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
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2000-2004
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2003
 * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
 */


/*
 * Multi Image extract
 */
#include <common.h>
#include <command.h>
#include <env.h>
#include <gzip.h>
#include <image.h>
#include <mapmem.h>
#include <watchdog.h>
#if defined(CONFIG_BZIP2)
#include <bzlib.h>
#endif
#include <asm/byteorder.h>
#include <asm/io.h>

#ifndef CONFIG_SYS_XIMG_LEN
/* use 8MByte as default max gunzip size */
#define CONFIG_SYS_XIMG_LEN	0x800000
#endif

static int
do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
	ulong		addr = load_addr;
	ulong		dest = 0;
	ulong		data, len;
	int		verify;
	int		part = 0;
#if defined(CONFIG_LEGACY_IMAGE_FORMAT)
	ulong		count;
	image_header_t	*hdr = NULL;
#endif
#if defined(CONFIG_FIT)
	const char	*uname = NULL;
	const void*	fit_hdr;
	int		noffset;
	const void	*fit_data;
	size_t		fit_len;
#endif
#ifdef CONFIG_GZIP
	uint		unc_len = CONFIG_SYS_XIMG_LEN;
#endif
	uint8_t		comp;

	verify = env_get_yesno("verify");

	if (argc > 1) {
		addr = simple_strtoul(argv[1], NULL, 16);
	}
	if (argc > 2) {
		part = simple_strtoul(argv[2], NULL, 16);
#if defined(CONFIG_FIT)
		uname = argv[2];
#endif
	}
	if (argc > 3) {
		dest = simple_strtoul(argv[3], NULL, 16);
	}

	switch (genimg_get_format((void *)addr)) {
#if defined(CONFIG_LEGACY_IMAGE_FORMAT)
	case IMAGE_FORMAT_LEGACY:

		printf("## Copying part %d from legacy image "
			"at %08lx ...\n", part, addr);

		hdr = (image_header_t *)addr;
		if (!image_check_magic(hdr)) {
			printf("Bad Magic Number\n");
			return 1;
		}

		if (!image_check_hcrc(hdr)) {
			printf("Bad Header Checksum\n");
			return 1;
		}
#ifdef DEBUG
		image_print_contents(hdr);
#endif

		if (!image_check_type(hdr, IH_TYPE_MULTI) &&
		    !image_check_type(hdr, IH_TYPE_SCRIPT)) {
			printf("Wrong Image Type for %s command\n",
					cmdtp->name);
			return 1;
		}

		comp = image_get_comp(hdr);
		if ((comp != IH_COMP_NONE) && (argc < 4)) {
			printf("Must specify load address for %s command "
					"with compressed image\n",
					cmdtp->name);
			return 1;
		}

		if (verify) {
			printf("   Verifying Checksum ... ");
			if (!image_check_dcrc(hdr)) {
				printf("Bad Data CRC\n");
				return 1;
			}
			printf("OK\n");
		}

		count = image_multi_count(hdr);
		if (part >= count) {
			printf("Bad Image Part\n");
			return 1;
		}

		image_multi_getimg(hdr, part, &data, &len);
		break;
#endif
#if defined(CONFIG_FIT)
	case IMAGE_FORMAT_FIT:
		if (uname == NULL) {
			puts("No FIT subimage unit name\n");
			return 1;
		}

		printf("## Copying '%s' subimage from FIT image "
			"at %08lx ...\n", uname, addr);

		fit_hdr = (const void *)addr;
		if (!fit_check_format(fit_hdr)) {
			puts("Bad FIT image format\n");
			return 1;
		}

		/* get subimage node offset */
		noffset = fit_image_get_node(fit_hdr, uname);
		if (noffset < 0) {
			printf("Can't find '%s' FIT subimage\n", uname);
			return 1;
		}

		if (!fit_image_check_comp(fit_hdr, noffset, IH_COMP_NONE)
		    && (argc < 4)) {
			printf("Must specify load address for %s command "
				"with compressed image\n",
				cmdtp->name);
			return 1;
		}

		/* verify integrity */
		if (verify) {
			if (!fit_image_verify(fit_hdr, noffset)) {
				puts("Bad Data Hash\n");
				return 1;
			}
		}

		/* get subimage/external data address and length */
		if (fit_image_get_data_and_size(fit_hdr, noffset,
					       &fit_data, &fit_len)) {
			puts("Could not find script subimage data\n");
			return 1;
		}

		if (fit_image_get_comp(fit_hdr, noffset, &comp)) {
			puts("Could not find script subimage "
				"compression type\n");
			return 1;
		}

		data = (ulong)fit_data;
		len = (ulong)fit_len;
		break;
#endif
	default:
		puts("Invalid image type for imxtract\n");
		return 1;
	}

	if (argc > 3) {
		switch (comp) {
		case IH_COMP_NONE:
#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
			{
				size_t l = len;
				size_t tail;
				void *to = (void *) dest;
				void *from = (void *)data;

				printf("   Loading part %d ... ", part);

				while (l > 0) {
					tail = (l > CHUNKSZ) ? CHUNKSZ : l;
					WATCHDOG_RESET();
					memmove(to, from, tail);
					to += tail;
					from += tail;
					l -= tail;
				}
			}
#else	/* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
			printf("   Loading part %d ... ", part);
			memmove((char *) dest, (char *)data, len);
#endif	/* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
			break;
#ifdef CONFIG_GZIP
		case IH_COMP_GZIP:
			printf("   Uncompressing part %d ... ", part);
			if (gunzip((void *) dest, unc_len,
				   (uchar *) data, &len) != 0) {
				puts("GUNZIP ERROR - image not loaded\n");
				return 1;
			}
			break;
#endif
#if defined(CONFIG_BZIP2) && defined(CONFIG_LEGACY_IMAGE_FORMAT)
		case IH_COMP_BZIP2:
			{
				int i;

				printf("   Uncompressing part %d ... ", part);
				/*
				 * If we've got less than 4 MB of malloc()
				 * space, use slower decompression algorithm
				 * which requires at most 2300 KB of memory.
				 */
				i = BZ2_bzBuffToBuffDecompress(
					map_sysmem(ntohl(hdr->ih_load), 0),
					&unc_len, (char *)data, len,
					CONFIG_SYS_MALLOC_LEN < (4096 * 1024),
					0);
				if (i != BZ_OK) {
					printf("BUNZIP2 ERROR %d - "
						"image not loaded\n", i);
					return 1;
				}
			}
			break;
#endif /* CONFIG_BZIP2 */
		default:
			printf("Unimplemented compression type %d\n", comp);
			return 1;
		}
		puts("OK\n");
	}

	flush_cache(dest, ALIGN(len, ARCH_DMA_MINALIGN));

	env_set_hex("fileaddr", data);
	env_set_hex("filesize", len);

	return 0;
}

#ifdef CONFIG_SYS_LONGHELP
static char imgextract_help_text[] =
	"addr part [dest]\n"
	"    - extract <part> from legacy image at <addr> and copy to <dest>"
#if defined(CONFIG_FIT)
	"\n"
	"addr uname [dest]\n"
	"    - extract <uname> subimage from FIT image at <addr> and copy to <dest>"
#endif
	"";
#endif

U_BOOT_CMD(
	imxtract, 4, 1, do_imgextract,
	"extract a part of a multi-image", imgextract_help_text
);