summaryrefslogtreecommitdiff
path: root/tools/imximage.c
blob: c1fdafbd7c8dcd2560f87acaad9385758536cf3d (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
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
/*
 * (C) Copyright 2009
 * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
 *
 * (C) Copyright 2008
 * Marvell Semiconductor <www.marvell.com>
 * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include "mkimage.h"
#include <image.h>
#include "imximage.h"

/*
 * Supported commands for configuration file
 */
static table_entry_t imximage_cmds[] = {
	{CMD_BOOT_FROM,		"BOOT_FROM",		"boot comand",	},
	{CMD_DATA,		"DATA",			"Reg Write Data", },
	{-1,		"",			"",	},
};

/*
 * Supported Boot options for configuration file
 * this is needed to set the correct flash offset
 */
static table_entry_t imximage_bootops[] = {
	{FLASH_OFFSET_SPI,	"spi",		"SPI Flash",	},
	{FLASH_OFFSET_NAND,	"nand",		"NAND Flash",	},
	{FLASH_OFFSET_SD,	"sd",		"SD Card",	},
	{FLASH_OFFSET_ONENAND,	"onenand",	"OneNAND Flash",},
	{-1,			"",		"Invalid",	},
};


static struct imx_header imximage_header;

static uint32_t get_cfg_value(char *token, char *name,  int linenr)
{
	char *endptr;
	uint32_t value;

	errno = 0;
	value = strtoul(token, &endptr, 16);
	if (errno || (token == endptr)) {
		fprintf(stderr, "Error: %s[%d] - Invalid hex data(%s)\n",
			name,  linenr, token);
		exit(EXIT_FAILURE);
	}
	return value;
}

static int imximage_check_image_types(uint8_t type)
{
	if (type == IH_TYPE_IMXIMAGE)
		return EXIT_SUCCESS;
	else
		return EXIT_FAILURE;
}

static int imximage_verify_header(unsigned char *ptr, int image_size,
			struct mkimage_params *params)
{

	struct imx_header *imx_hdr = (struct imx_header *) ptr;
	flash_header_t *hdr = &imx_hdr->fhdr;

	/* Only a few checks can be done: search for magic numbers */
	if (hdr->app_code_barker != APP_CODE_BARKER)
		return -FDT_ERR_BADSTRUCTURE;

	if (imx_hdr->dcd_table.preamble.barker != DCD_BARKER)
		return -FDT_ERR_BADSTRUCTURE;

	return 0;
}

static void imximage_print_header(const void *ptr)
{
	struct imx_header *imx_hdr = (struct imx_header *) ptr;
	flash_header_t *hdr = &imx_hdr->fhdr;
	uint32_t size;
	flash_cfg_parms_t *ext_header;

	size = imx_hdr->dcd_table.preamble.length;
	if (size > (MAX_HW_CFG_SIZE * sizeof(dcd_type_addr_data_t))) {
		fprintf(stderr,
			"Error: Image corrupt DCD size %d exceed maximum %d\n",
			size / sizeof(dcd_type_addr_data_t), MAX_HW_CFG_SIZE);
		exit(EXIT_FAILURE);
	}

	ext_header = (flash_cfg_parms_t *) ((uint32_t)&imx_hdr->dcd_table +
			sizeof(dcd_preamble_t) + size);

	printf("Image Type:   Freescale IMX Boot Image\n");
	printf("Data Size:    ");
	genimg_print_size(ext_header->length);
	printf("Load Address: %08x\n", (unsigned int)hdr->app_dest_ptr);
	printf("Entry Point:  %08x\n", (unsigned int)hdr->app_code_jump_vector);
}

static uint32_t imximage_parse_cfg_file(struct imx_header *imxhdr, char *name)
{
	FILE *fd = NULL;
	char *line = NULL;
	char *token, *saveptr1, *saveptr2;
	int lineno = 0;
	int fld, value;
	uint32_t len;
	int dcd_len = 0;
	dcd_t *dcd = &imxhdr->dcd_table;
	int32_t cmd;

	fd = fopen(name, "r");
	if (fd == 0) {
		fprintf(stderr, "Error: %s - Can't open DCD file\n", name);
		exit(EXIT_FAILURE);
	}

	/* Very simple parsing, line starting with # are comments
	 * and are dropped
	 */
	while ((getline(&line, &len, fd)) > 0) {
		lineno++;

		token = strtok_r(line, "\r\n", &saveptr1);
		if (token == NULL)
			continue;

		/* Check inside the single line */
		for (fld = CFG_COMMAND, cmd = CMD_INVALID,
				line = token; ; line = NULL, fld++) {
			token = strtok_r(line, " \t", &saveptr2);
			if (token == NULL)
				break;

			/* Drop all text starting with '#' as comments */
			if (token[0] == '#')
				break;

			/* parse all fields in a single line */
			switch (fld) {
			case CFG_COMMAND:
				cmd = get_table_entry_id(imximage_cmds,
					"imximage commands", token);
				if (cmd < 0) {
					fprintf(stderr,
						"Error: %s[%d] - "
						"Invalid command (%s)\n",
						name, lineno, token);
					exit(EXIT_FAILURE);
				}
				break;
			case CFG_REG_SIZE:
				switch (cmd) {
				case CMD_BOOT_FROM:
					/* Get flash header offset */
					imxhdr->flash_offset =
						get_table_entry_id(
							imximage_bootops,
							"imximage boot option",
							token);
					if (imxhdr->flash_offset == -1) {
						fprintf(stderr,
							"Error: %s[%d] -"
							"Invalid boot device"
							"(%s)\n",
							name, lineno, token);
						exit(EXIT_FAILURE);
					}
					break;
				case CMD_DATA:
					value = get_cfg_value(token,
							name, lineno);

					/* Byte, halfword, word */
					if ((value != 1) &&
						(value != 2) && (value != 4)) {
						fprintf(stderr,
							"Error: %s[%d] - "
							"Invalid register size "
							"(%d)\n",
							name, lineno, value);
						exit(EXIT_FAILURE);
					}
					dcd->addr_data[dcd_len].type = value;
					break;
				}

			case CFG_REG_ADDRESS:
				if (cmd == CMD_DATA)
					dcd->addr_data[dcd_len].addr =
						get_cfg_value(token,
							name, lineno);
				break;
			case CFG_REG_VALUE:
				if (cmd == CMD_DATA) {
					dcd->addr_data[dcd_len].value =
						get_cfg_value(token,
							name, lineno);
					dcd_len++;
				}
				break;
			}
		}

		if (dcd_len > MAX_HW_CFG_SIZE) {
			fprintf(stderr,
				"Error: %s[%d] -"
				"DCD table exceeds maximum size(%d)\n",
				name, lineno, MAX_HW_CFG_SIZE);
		}
	}
	dcd->preamble.barker = DCD_BARKER;
	dcd->preamble.length = dcd_len * sizeof(dcd_type_addr_data_t);
	fclose(fd);

	return dcd->preamble.length;
}

static void imximage_set_header(void *ptr, struct stat *sbuf, int ifd,
				struct mkimage_params *params)
{
	struct imx_header *hdr = (struct imx_header *)ptr;
	flash_header_t *fhdr = &hdr->fhdr;
	int dcd_len;
	flash_cfg_parms_t *ext_header;
	uint32_t base_offset;

	/* Set default offset */
	hdr->flash_offset = FLASH_OFFSET_STANDARD;

	/* Set magic number */
	fhdr->app_code_barker = APP_CODE_BARKER;

	/* Parse dcd configuration file */
	dcd_len = imximage_parse_cfg_file(hdr, params->imagename);

	fhdr->app_dest_ptr = params->addr;
	fhdr->app_dest_ptr = params->ep - hdr->flash_offset -
		sizeof(struct imx_header);
	fhdr->app_code_jump_vector = params->ep;

	base_offset = fhdr->app_dest_ptr + hdr->flash_offset ;
	fhdr->dcd_ptr_ptr = (uint32_t) ((uint32_t)&fhdr->dcd_ptr -
		(uint32_t)&fhdr->app_code_jump_vector) + base_offset ;

	fhdr->dcd_ptr = base_offset +
			((uint32_t)&hdr->dcd_table -
			(uint32_t)&hdr->fhdr);

	/* The external flash header must be at the end of the DCD table */
	ext_header = (flash_cfg_parms_t *) ((uint32_t)&hdr->dcd_table +
			dcd_len +
			sizeof(dcd_preamble_t));
	ext_header->length = sbuf->st_size +
				hdr->flash_offset +
				sizeof(struct imx_header);

	/* Security feature are not supported */
	fhdr->app_code_csf = 0;
	fhdr->super_root_key = NULL;

}

int imximage_check_params(struct mkimage_params *params)
{
	if (!params)
		return CFG_INVALID;
	if (!strlen(params->imagename)) {
		fprintf(stderr, "Error: %s - Configuration file not specified, "
			"it is needed for imximage generation\n",
			params->cmdname);
		return CFG_INVALID;
	}
	/*
	 * Check parameters:
	 * XIP is not allowed and verify that incompatible
	 * parameters are not sent at the same time
	 * For example, if list is required a data image must not be provided
	 */
	return	(params->dflag && (params->fflag || params->lflag)) ||
		(params->fflag && (params->dflag || params->lflag)) ||
		(params->lflag && (params->dflag || params->fflag)) ||
		(params->xflag) || !(strlen(params->imagename));
}

/*
 * imximage parameters
 */
static struct image_type_params imximage_params = {
	.name		= "Freescale i.MX 51 Boot Image support",
	.header_size	= sizeof(struct imx_header),
	.hdr		= (void *)&imximage_header,
	.check_image_type = imximage_check_image_types,
	.verify_header	= imximage_verify_header,
	.print_header	= imximage_print_header,
	.set_header	= imximage_set_header,
	.check_params	= imximage_check_params,
};

void init_imx_image_type(void)
{
	mkimage_register(&imximage_params);
}