summaryrefslogtreecommitdiffstats
path: root/tools/omapimage.c
blob: d242cca3a8a0f9ec5279ed4cd94b9dba1b261ba4 (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
/*
 * (C) Copyright 2010
 * Linaro LTD, www.linaro.org
 * Author: John Rigby <john.rigby@linaro.org>
 * Based on TI's signGP.c
 *
 * (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
 */

/* Required to obtain the getline prototype from stdio.h */
#define _GNU_SOURCE

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

/* Header size is CH header rounded up to 512 bytes plus GP header */
#define OMAP_CH_HDR_SIZE 512
#define OMAP_GP_HDR_SIZE (sizeof(struct gp_header))
#define OMAP_FILE_HDR_SIZE (OMAP_CH_HDR_SIZE+OMAP_GP_HDR_SIZE)

static int do_swap32 = 0;

static uint32_t omapimage_swap32(uint32_t data)
{
	uint32_t result = 0;
	result  = (data & 0xFF000000) >> 24;
	result |= (data & 0x00FF0000) >> 8;
	result |= (data & 0x0000FF00) << 8;
	result |= (data & 0x000000FF) << 24;
	return result;
}

static uint8_t omapimage_header[OMAP_FILE_HDR_SIZE];

static int omapimage_check_image_types(uint8_t type)
{
	if (type == IH_TYPE_OMAPIMAGE)
		return EXIT_SUCCESS;
	else {
		return EXIT_FAILURE;
	}
}

/*
 * Only the simplest image type is currently supported:
 * TOC pointing to CHSETTINGS
 * TOC terminator
 * CHSETTINGS
 *
 * padding to OMAP_CH_HDR_SIZE bytes
 *
 * gp header
 *   size
 *   load_addr
 */
static int valid_gph_size(uint32_t size)
{
	return size;
}

static int valid_gph_load_addr(uint32_t load_addr)
{
	return load_addr;
}

static int omapimage_verify_header(unsigned char *ptr, int image_size,
			struct mkimage_params *params)
{
	struct ch_toc *toc = (struct ch_toc *)ptr;
	struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
	uint32_t offset, size, gph_size, gph_load_addr;

	while (toc->section_offset != 0xffffffff
			&& toc->section_size != 0xffffffff) {
		if (do_swap32) {
			offset = omapimage_swap32(toc->section_offset);
			size = omapimage_swap32(toc->section_size);
		} else {
			offset = toc->section_offset;
			size = toc->section_size;
		}
		if (!offset || !size)
			return -1;
		if (offset >= OMAP_CH_HDR_SIZE ||
		    offset+size >= OMAP_CH_HDR_SIZE)
			return -1;
		toc++;
	}

	if (do_swap32) {
		gph_size = omapimage_swap32(gph->size);
		gph_load_addr = omapimage_swap32(gph->load_addr);
	} else {
		gph_size = gph->size;
		gph_load_addr = gph->load_addr;
	}

	if (!valid_gph_size(gph_size))
		return -1;
	if (!valid_gph_load_addr(gph_load_addr))
		return -1;

	return 0;
}

static void omapimage_print_section(struct ch_settings *chs)
{
	const char *section_name;

	if (chs->section_key)
		section_name = "CHSETTINGS";
	else
		section_name = "UNKNOWNKEY";

	printf("%s (%x) "
		"valid:%x "
		"version:%x "
		"reserved:%x "
		"flags:%x\n",
		section_name,
		chs->section_key,
		chs->valid,
		chs->version,
		chs->reserved,
		chs->flags);
}

static void omapimage_print_header(const void *ptr)
{
	const struct ch_toc *toc = (struct ch_toc *)ptr;
	const struct gp_header *gph =
			(struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
	uint32_t offset, size, gph_size, gph_load_addr;

	while (toc->section_offset != 0xffffffff
			&& toc->section_size != 0xffffffff) {
		if (do_swap32) {
			offset = omapimage_swap32(toc->section_offset);
			size = omapimage_swap32(toc->section_size);
		} else {
			offset = toc->section_offset;
			size = toc->section_size;
		}

		if (offset >= OMAP_CH_HDR_SIZE ||
		    offset+size >= OMAP_CH_HDR_SIZE)
			exit(EXIT_FAILURE);

		printf("Section %s offset %x length %x\n",
			toc->section_name,
			toc->section_offset,
			toc->section_size);

		omapimage_print_section((struct ch_settings *)(ptr+offset));
		toc++;
	}

	if (do_swap32) {
		gph_size = omapimage_swap32(gph->size);
		gph_load_addr = omapimage_swap32(gph->load_addr);
	} else {
		gph_size = gph->size;
		gph_load_addr = gph->load_addr;
	}

	if (!valid_gph_size(gph_size)) {
		fprintf(stderr, "Error: invalid image size %x\n", gph_size);
		exit(EXIT_FAILURE);
	}

	if (!valid_gph_load_addr(gph_load_addr)) {
		fprintf(stderr, "Error: invalid image load address %x\n",
				gph_load_addr);
		exit(EXIT_FAILURE);
	}

	printf("GP Header: Size %x LoadAddr %x\n", gph_size, gph_load_addr);
}

static int toc_offset(void *hdr, void *member)
{
	return member - hdr;
}

static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
				struct mkimage_params *params)
{
	struct ch_toc *toc = (struct ch_toc *)ptr;
	struct ch_settings *chs = (struct ch_settings *)
					(ptr + 2 * sizeof(*toc));
	struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);

	toc->section_offset = toc_offset(ptr, chs);
	toc->section_size = sizeof(struct ch_settings);
	strcpy((char *)toc->section_name, "CHSETTINGS");

	chs->section_key = KEY_CHSETTINGS;
	chs->valid = 0;
	chs->version = 1;
	chs->reserved = 0;
	chs->flags = 0;

	toc++;
	memset(toc, 0xff, sizeof(*toc));

	gph->size = sbuf->st_size - OMAP_FILE_HDR_SIZE;
	gph->load_addr = params->addr;

	if (strncmp(params->imagename, "byteswap", 8) == 0) {
		do_swap32 = 1;
		int swapped = 0;
		uint32_t *data = (uint32_t *)ptr;

		while (swapped <= (sbuf->st_size / sizeof(uint32_t))) {
			*data = omapimage_swap32(*data);
			swapped++;
			data++;
		}
	}
}

int omapimage_check_params(struct mkimage_params *params)
{
	return	(params->dflag && (params->fflag || params->lflag)) ||
		(params->fflag && (params->dflag || params->lflag)) ||
		(params->lflag && (params->dflag || params->fflag));
}

/*
 * omapimage parameters
 */
static struct image_type_params omapimage_params = {
	.name		= "TI OMAP CH/GP Boot Image support",
	.header_size	= OMAP_FILE_HDR_SIZE,
	.hdr		= (void *)&omapimage_header,
	.check_image_type = omapimage_check_image_types,
	.verify_header	= omapimage_verify_header,
	.print_header	= omapimage_print_header,
	.set_header	= omapimage_set_header,
	.check_params	= omapimage_check_params,
};

void init_omap_image_type(void)
{
	mkimage_register(&omapimage_params);
}
OpenPOWER on IntegriCloud