summaryrefslogtreecommitdiff
path: root/cmd/adtimg.c
blob: f4b5cbf35b97e64b252f31b8e74588179292d371 (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
// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2018 Linaro Ltd.
 * Sam Protsenko <semen.protsenko@linaro.org>
 * Eugeniu Rosca <rosca.eugeniu@gmail.com>
 */

#include <command.h>
#include <env.h>
#include <image-android-dt.h>
#include <common.h>

#define OPT_INDEX	"--index"

/*
 * Current/working DTB/DTBO Android image address.
 * Similar to 'working_fdt' variable in 'fdt' command.
 */
static ulong working_img;

static int do_adtimg_addr(struct cmd_tbl *cmdtp, int flag, int argc,
			  char *const argv[])
{
	char *endp;
	ulong hdr_addr;

	if (argc != 2)
		return CMD_RET_USAGE;

	hdr_addr = hextoul(argv[1], &endp);
	if (*endp != '\0') {
		printf("Error: Wrong image address '%s'\n", argv[1]);
		return CMD_RET_FAILURE;
	}

	/*
	 * Allow users to set an address prior to copying the DTB/DTBO
	 * image to that same address, i.e. skip header verification.
	 */

	working_img = hdr_addr;
	return CMD_RET_SUCCESS;
}

static int adtimg_check_working_img(void)
{
	if (!working_img) {
		printf("Error: Please, call 'adtimg addr <addr>'. Aborting!\n");
		return CMD_RET_FAILURE;
	}

	if (!android_dt_check_header(working_img)) {
		printf("Error: Invalid image header at 0x%lx\n", working_img);
		return CMD_RET_FAILURE;
	}

	return CMD_RET_SUCCESS;
}

static int do_adtimg_dump(struct cmd_tbl *cmdtp, int flag, int argc,
			  char *const argv[])
{
	if (argc != 1)
		return CMD_RET_USAGE;

	if (adtimg_check_working_img() != CMD_RET_SUCCESS)
		return CMD_RET_FAILURE;

	android_dt_print_contents(working_img);

	return CMD_RET_SUCCESS;
}

static int adtimg_getopt_u32(char * const opt, char * const name, u32 *optval)
{
	char *endp, *str;
	u32 val;

	if (!opt || !name || !optval)
		return CMD_RET_FAILURE;

	str = strchr(opt, '=');
	if (!str) {
		printf("Error: Option '%s' not followed by '='\n", name);
		return CMD_RET_FAILURE;
	}

	if (*++str == '\0') {
		printf("Error: Option '%s=' not followed by value\n", name);
		return CMD_RET_FAILURE;
	}

	val = simple_strtoul(str, &endp, 0);
	if (*endp != '\0') {
		printf("Error: Wrong integer value '%s=%s'\n", name, str);
		return CMD_RET_FAILURE;
	}

	*optval = val;
	return CMD_RET_SUCCESS;
}

static int adtimg_getopt_index(int argc, char *const argv[], u32 *index,
			       char **avar, char **svar)
{
	int ret;

	if (!argv || !avar || !svar)
		return CMD_RET_FAILURE;

	if (argc > 3) {
		printf("Error: Unexpected argument '%s'\n", argv[3]);
		return CMD_RET_FAILURE;
	}

	ret = adtimg_getopt_u32(argv[0], OPT_INDEX, index);
	if (ret != CMD_RET_SUCCESS)
		return ret;

	if (argc > 1)
		*avar = argv[1];
	if (argc > 2)
		*svar = argv[2];

	return CMD_RET_SUCCESS;
}

static int adtimg_get_dt_by_index(int argc, char *const argv[])
{
	ulong addr;
	u32 index, size;
	int ret;
	char *avar = NULL, *svar = NULL;

	ret = adtimg_getopt_index(argc, argv, &index, &avar, &svar);
	if (ret != CMD_RET_SUCCESS)
		return ret;

	if (!android_dt_get_fdt_by_index(working_img, index, &addr, &size))
		return CMD_RET_FAILURE;

	if (avar && svar) {
		ret = env_set_hex(avar, addr);
		if (ret) {
			printf("Error: Can't set '%s' to 0x%lx\n", avar, addr);
			return CMD_RET_FAILURE;
		}
		ret = env_set_hex(svar, size);
		if (ret) {
			printf("Error: Can't set '%s' to 0x%x\n", svar, size);
			return CMD_RET_FAILURE;
		}
	} else if (avar) {
		ret = env_set_hex(avar, addr);
		if (ret) {
			printf("Error: Can't set '%s' to 0x%lx\n", avar, addr);
			return CMD_RET_FAILURE;
		}
		printf("0x%x (%d)\n", size, size);
	} else {
		printf("0x%lx, 0x%x (%d)\n", addr, size, size);
	}

	return CMD_RET_SUCCESS;
}

static int adtimg_get_dt(int argc, char *const argv[])
{
	if (argc < 2) {
		printf("Error: No options passed to '%s'\n", argv[0]);
		return CMD_RET_FAILURE;
	}

	/* Strip off leading 'dt' command argument */
	argc--;
	argv++;

	if (!strncmp(argv[0], OPT_INDEX, sizeof(OPT_INDEX) - 1))
		return adtimg_get_dt_by_index(argc, argv);

	printf("Error: Option '%s' not supported\n", argv[0]);
	return CMD_RET_FAILURE;
}

static int do_adtimg_get(struct cmd_tbl *cmdtp, int flag, int argc,
			 char *const argv[])
{
	if (argc < 2) {
		printf("Error: No arguments passed to '%s'\n", argv[0]);
		return CMD_RET_FAILURE;
	}

	if (adtimg_check_working_img() != CMD_RET_SUCCESS)
		return CMD_RET_FAILURE;

	/* Strip off leading 'get' command argument */
	argc--;
	argv++;

	if (!strcmp(argv[0], "dt"))
		return adtimg_get_dt(argc, argv);

	printf("Error: Wrong argument '%s'\n", argv[0]);
	return CMD_RET_FAILURE;
}

static struct cmd_tbl cmd_adtimg_sub[] = {
	U_BOOT_CMD_MKENT(addr, CONFIG_SYS_MAXARGS, 1, do_adtimg_addr, "", ""),
	U_BOOT_CMD_MKENT(dump, CONFIG_SYS_MAXARGS, 1, do_adtimg_dump, "", ""),
	U_BOOT_CMD_MKENT(get, CONFIG_SYS_MAXARGS, 1, do_adtimg_get, "", ""),
};

static int do_adtimg(struct cmd_tbl *cmdtp, int flag, int argc,
		     char *const argv[])
{
	struct cmd_tbl *cp;

	cp = find_cmd_tbl(argv[1], cmd_adtimg_sub, ARRAY_SIZE(cmd_adtimg_sub));

	/* Strip off leading 'adtimg' command argument */
	argc--;
	argv++;

	if (!cp || argc > cp->maxargs)
		return CMD_RET_USAGE;
	if (flag == CMD_FLAG_REPEAT && !cmd_is_repeatable(cp))
		return CMD_RET_SUCCESS;

	return cp->cmd(cmdtp, flag, argc, argv);
}

U_BOOT_CMD(
	adtimg, CONFIG_SYS_MAXARGS, 0, do_adtimg,
	"manipulate dtb/dtbo Android image",
	"addr <addr> - Set image location to <addr>\n"
	"adtimg dump        - Print out image contents\n"
	"adtimg get dt --index=<index> [avar [svar]]         - Get DT address/size by index\n"
	"\n"
	"Legend:\n"
	"  - <addr>: DTB/DTBO image address (hex) in RAM\n"
	"  - <index>: index (hex/dec) of desired DT in the image\n"
	"  - <avar>: variable name to contain DT address (hex)\n"
	"  - <svar>: variable name to contain DT size (hex)"
);