xref: /openbmc/u-boot/tools/omapimage.c (revision cabe240b) 
1 /*
2  * (C) Copyright 2010
3  * Linaro LTD, www.linaro.org
4  * Author: John Rigby <john.rigby@linaro.org>
5  * Based on TI's signGP.c
6  *
7  * (C) Copyright 2009
8  * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
9  *
10  * (C) Copyright 2008
11  * Marvell Semiconductor <www.marvell.com>
12  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
13  *
14  * See file CREDITS for list of people who contributed to this
15  * project.
16  *
17  * This program is free software; you can redistribute it and/or
18  * modify it under the terms of the GNU General Public License as
19  * published by the Free Software Foundation; either version 2 of
20  * the License, or (at your option) any later version.
21  *
22  * This program is distributed in the hope that it will be useful,
23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
25  * GNU General Public License for more details.
26  *
27  * You should have received a copy of the GNU General Public License
28  * along with this program; if not, write to the Free Software
29  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30  * MA 02111-1307 USA
31  */
32 
33 /* Required to obtain the getline prototype from stdio.h */
34 #define _GNU_SOURCE
35 
36 #include "mkimage.h"
37 #include <image.h>
38 #include "omapimage.h"
39 
40 /* Header size is CH header rounded up to 512 bytes plus GP header */
41 #define OMAP_CH_HDR_SIZE 512
42 #define OMAP_GP_HDR_SIZE (sizeof(struct gp_header))
43 #define OMAP_FILE_HDR_SIZE (OMAP_CH_HDR_SIZE+OMAP_GP_HDR_SIZE)
44 
45 static int do_swap32 = 0;
46 
47 static uint32_t omapimage_swap32(uint32_t data)
48 {
49 	uint32_t result = 0;
50 	result  = (data & 0xFF000000) >> 24;
51 	result |= (data & 0x00FF0000) >> 8;
52 	result |= (data & 0x0000FF00) << 8;
53 	result |= (data & 0x000000FF) << 24;
54 	return result;
55 }
56 
57 static uint8_t omapimage_header[OMAP_FILE_HDR_SIZE];
58 
59 static int omapimage_check_image_types(uint8_t type)
60 {
61 	if (type == IH_TYPE_OMAPIMAGE)
62 		return EXIT_SUCCESS;
63 	else {
64 		return EXIT_FAILURE;
65 	}
66 }
67 
68 /*
69  * Only the simplest image type is currently supported:
70  * TOC pointing to CHSETTINGS
71  * TOC terminator
72  * CHSETTINGS
73  *
74  * padding to OMAP_CH_HDR_SIZE bytes
75  *
76  * gp header
77  *   size
78  *   load_addr
79  */
80 static int valid_gph_size(uint32_t size)
81 {
82 	return size;
83 }
84 
85 static int valid_gph_load_addr(uint32_t load_addr)
86 {
87 	return load_addr;
88 }
89 
90 static int omapimage_verify_header(unsigned char *ptr, int image_size,
91 			struct mkimage_params *params)
92 {
93 	struct ch_toc *toc = (struct ch_toc *)ptr;
94 	struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
95 	uint32_t offset, size, gph_size, gph_load_addr;
96 
97 	while (toc->section_offset != 0xffffffff
98 			&& toc->section_size != 0xffffffff) {
99 		if (do_swap32) {
100 			offset = omapimage_swap32(toc->section_offset);
101 			size = omapimage_swap32(toc->section_size);
102 		} else {
103 			offset = toc->section_offset;
104 			size = toc->section_size;
105 		}
106 		if (!offset || !size)
107 			return -1;
108 		if (offset >= OMAP_CH_HDR_SIZE ||
109 		    offset+size >= OMAP_CH_HDR_SIZE)
110 			return -1;
111 		toc++;
112 	}
113 
114 	if (do_swap32) {
115 		gph_size = omapimage_swap32(gph->size);
116 		gph_load_addr = omapimage_swap32(gph->load_addr);
117 	} else {
118 		gph_size = gph->size;
119 		gph_load_addr = gph->load_addr;
120 	}
121 
122 	if (!valid_gph_size(gph_size))
123 		return -1;
124 	if (!valid_gph_load_addr(gph_load_addr))
125 		return -1;
126 
127 	return 0;
128 }
129 
130 static void omapimage_print_section(struct ch_settings *chs)
131 {
132 	const char *section_name;
133 
134 	if (chs->section_key)
135 		section_name = "CHSETTINGS";
136 	else
137 		section_name = "UNKNOWNKEY";
138 
139 	printf("%s (%x) "
140 		"valid:%x "
141 		"version:%x "
142 		"reserved:%x "
143 		"flags:%x\n",
144 		section_name,
145 		chs->section_key,
146 		chs->valid,
147 		chs->version,
148 		chs->reserved,
149 		chs->flags);
150 }
151 
152 static void omapimage_print_header(const void *ptr)
153 {
154 	const struct ch_toc *toc = (struct ch_toc *)ptr;
155 	const struct gp_header *gph =
156 			(struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
157 	uint32_t offset, size, gph_size, gph_load_addr;
158 
159 	while (toc->section_offset != 0xffffffff
160 			&& toc->section_size != 0xffffffff) {
161 		if (do_swap32) {
162 			offset = omapimage_swap32(toc->section_offset);
163 			size = omapimage_swap32(toc->section_size);
164 		} else {
165 			offset = toc->section_offset;
166 			size = toc->section_size;
167 		}
168 
169 		if (offset >= OMAP_CH_HDR_SIZE ||
170 		    offset+size >= OMAP_CH_HDR_SIZE)
171 			exit(EXIT_FAILURE);
172 
173 		printf("Section %s offset %x length %x\n",
174 			toc->section_name,
175 			toc->section_offset,
176 			toc->section_size);
177 
178 		omapimage_print_section((struct ch_settings *)(ptr+offset));
179 		toc++;
180 	}
181 
182 	if (do_swap32) {
183 		gph_size = omapimage_swap32(gph->size);
184 		gph_load_addr = omapimage_swap32(gph->load_addr);
185 	} else {
186 		gph_size = gph->size;
187 		gph_load_addr = gph->load_addr;
188 	}
189 
190 	if (!valid_gph_size(gph_size)) {
191 		fprintf(stderr, "Error: invalid image size %x\n", gph_size);
192 		exit(EXIT_FAILURE);
193 	}
194 
195 	if (!valid_gph_load_addr(gph_load_addr)) {
196 		fprintf(stderr, "Error: invalid image load address %x\n",
197 				gph_load_addr);
198 		exit(EXIT_FAILURE);
199 	}
200 
201 	printf("GP Header: Size %x LoadAddr %x\n", gph_size, gph_load_addr);
202 }
203 
204 static int toc_offset(void *hdr, void *member)
205 {
206 	return member - hdr;
207 }
208 
209 static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
210 				struct mkimage_params *params)
211 {
212 	struct ch_toc *toc = (struct ch_toc *)ptr;
213 	struct ch_settings *chs = (struct ch_settings *)
214 					(ptr + 2 * sizeof(*toc));
215 	struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);
216 
217 	toc->section_offset = toc_offset(ptr, chs);
218 	toc->section_size = sizeof(struct ch_settings);
219 	strcpy((char *)toc->section_name, "CHSETTINGS");
220 
221 	chs->section_key = KEY_CHSETTINGS;
222 	chs->valid = 0;
223 	chs->version = 1;
224 	chs->reserved = 0;
225 	chs->flags = 0;
226 
227 	toc++;
228 	memset(toc, 0xff, sizeof(*toc));
229 
230 	gph->size = sbuf->st_size - OMAP_FILE_HDR_SIZE;
231 	gph->load_addr = params->addr;
232 
233 	if (strncmp(params->imagename, "byteswap", 8) == 0) {
234 		do_swap32 = 1;
235 		int swapped = 0;
236 		uint32_t *data = (uint32_t *)ptr;
237 
238 		while (swapped <= (sbuf->st_size / sizeof(uint32_t))) {
239 			*data = omapimage_swap32(*data);
240 			swapped++;
241 			data++;
242 		}
243 	}
244 }
245 
246 int omapimage_check_params(struct mkimage_params *params)
247 {
248 	return	(params->dflag && (params->fflag || params->lflag)) ||
249 		(params->fflag && (params->dflag || params->lflag)) ||
250 		(params->lflag && (params->dflag || params->fflag));
251 }
252 
253 /*
254  * omapimage parameters
255  */
256 static struct image_type_params omapimage_params = {
257 	.name		= "TI OMAP CH/GP Boot Image support",
258 	.header_size	= OMAP_FILE_HDR_SIZE,
259 	.hdr		= (void *)&omapimage_header,
260 	.check_image_type = omapimage_check_image_types,
261 	.verify_header	= omapimage_verify_header,
262 	.print_header	= omapimage_print_header,
263 	.set_header	= omapimage_set_header,
264 	.check_params	= omapimage_check_params,
265 };
266 
267 void init_omap_image_type(void)
268 {
269 	mkimage_register(&omapimage_params);
270 }
271