xref: /openbmc/u-boot/tools/omapimage.c (revision c4928c34)
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  * SPDX-License-Identifier:	GPL-2.0+
15  */
16 
17 #include "imagetool.h"
18 #include <image.h>
19 #include "omapimage.h"
20 
21 /* Header size is CH header rounded up to 512 bytes plus GP header */
22 #define OMAP_CH_HDR_SIZE 512
23 #define OMAP_GP_HDR_SIZE (sizeof(struct gp_header))
24 #define OMAP_FILE_HDR_SIZE (OMAP_CH_HDR_SIZE+OMAP_GP_HDR_SIZE)
25 
26 static int do_swap32 = 0;
27 
28 static uint32_t omapimage_swap32(uint32_t data)
29 {
30 	uint32_t result = 0;
31 	result  = (data & 0xFF000000) >> 24;
32 	result |= (data & 0x00FF0000) >> 8;
33 	result |= (data & 0x0000FF00) << 8;
34 	result |= (data & 0x000000FF) << 24;
35 	return result;
36 }
37 
38 static uint8_t omapimage_header[OMAP_FILE_HDR_SIZE];
39 
40 static int omapimage_check_image_types(uint8_t type)
41 {
42 	if (type == IH_TYPE_OMAPIMAGE)
43 		return EXIT_SUCCESS;
44 	else {
45 		return EXIT_FAILURE;
46 	}
47 }
48 
49 /*
50  * Only the simplest image type is currently supported:
51  * TOC pointing to CHSETTINGS
52  * TOC terminator
53  * CHSETTINGS
54  *
55  * padding to OMAP_CH_HDR_SIZE bytes
56  *
57  * gp header
58  *   size
59  *   load_addr
60  */
61 static int valid_gph_size(uint32_t size)
62 {
63 	return size;
64 }
65 
66 static int valid_gph_load_addr(uint32_t load_addr)
67 {
68 	return load_addr;
69 }
70 
71 static int omapimage_verify_header(unsigned char *ptr, int image_size,
72 			struct image_tool_params *params)
73 {
74 	struct ch_toc *toc = (struct ch_toc *)ptr;
75 	struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
76 	uint32_t offset, size, gph_size, gph_load_addr;
77 
78 	while (toc->section_offset != 0xffffffff
79 			&& toc->section_size != 0xffffffff) {
80 		if (do_swap32) {
81 			offset = omapimage_swap32(toc->section_offset);
82 			size = omapimage_swap32(toc->section_size);
83 		} else {
84 			offset = toc->section_offset;
85 			size = toc->section_size;
86 		}
87 		if (!offset || !size)
88 			return -1;
89 		if (offset >= OMAP_CH_HDR_SIZE ||
90 		    offset+size >= OMAP_CH_HDR_SIZE)
91 			return -1;
92 		toc++;
93 	}
94 
95 	if (do_swap32) {
96 		gph_size = omapimage_swap32(gph->size);
97 		gph_load_addr = omapimage_swap32(gph->load_addr);
98 	} else {
99 		gph_size = gph->size;
100 		gph_load_addr = gph->load_addr;
101 	}
102 
103 	if (!valid_gph_size(gph_size))
104 		return -1;
105 	if (!valid_gph_load_addr(gph_load_addr))
106 		return -1;
107 
108 	return 0;
109 }
110 
111 static void omapimage_print_section(struct ch_settings *chs)
112 {
113 	const char *section_name;
114 
115 	if (chs->section_key)
116 		section_name = "CHSETTINGS";
117 	else
118 		section_name = "UNKNOWNKEY";
119 
120 	printf("%s (%x) "
121 		"valid:%x "
122 		"version:%x "
123 		"reserved:%x "
124 		"flags:%x\n",
125 		section_name,
126 		chs->section_key,
127 		chs->valid,
128 		chs->version,
129 		chs->reserved,
130 		chs->flags);
131 }
132 
133 static void omapimage_print_header(const void *ptr)
134 {
135 	const struct ch_toc *toc = (struct ch_toc *)ptr;
136 	const struct gp_header *gph =
137 			(struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
138 	uint32_t offset, size, gph_size, gph_load_addr;
139 
140 	while (toc->section_offset != 0xffffffff
141 			&& toc->section_size != 0xffffffff) {
142 		if (do_swap32) {
143 			offset = omapimage_swap32(toc->section_offset);
144 			size = omapimage_swap32(toc->section_size);
145 		} else {
146 			offset = toc->section_offset;
147 			size = toc->section_size;
148 		}
149 
150 		if (offset >= OMAP_CH_HDR_SIZE ||
151 		    offset+size >= OMAP_CH_HDR_SIZE)
152 			exit(EXIT_FAILURE);
153 
154 		printf("Section %s offset %x length %x\n",
155 			toc->section_name,
156 			toc->section_offset,
157 			toc->section_size);
158 
159 		omapimage_print_section((struct ch_settings *)(ptr+offset));
160 		toc++;
161 	}
162 
163 	if (do_swap32) {
164 		gph_size = omapimage_swap32(gph->size);
165 		gph_load_addr = omapimage_swap32(gph->load_addr);
166 	} else {
167 		gph_size = gph->size;
168 		gph_load_addr = gph->load_addr;
169 	}
170 
171 	if (!valid_gph_size(gph_size)) {
172 		fprintf(stderr, "Error: invalid image size %x\n", gph_size);
173 		exit(EXIT_FAILURE);
174 	}
175 
176 	if (!valid_gph_load_addr(gph_load_addr)) {
177 		fprintf(stderr, "Error: invalid image load address %x\n",
178 				gph_load_addr);
179 		exit(EXIT_FAILURE);
180 	}
181 
182 	printf("GP Header: Size %x LoadAddr %x\n", gph_size, gph_load_addr);
183 }
184 
185 static int toc_offset(void *hdr, void *member)
186 {
187 	return member - hdr;
188 }
189 
190 static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
191 				struct image_tool_params *params)
192 {
193 	struct ch_toc *toc = (struct ch_toc *)ptr;
194 	struct ch_settings *chs = (struct ch_settings *)
195 					(ptr + 2 * sizeof(*toc));
196 	struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);
197 
198 	toc->section_offset = toc_offset(ptr, chs);
199 	toc->section_size = sizeof(struct ch_settings);
200 	strcpy((char *)toc->section_name, "CHSETTINGS");
201 
202 	chs->section_key = KEY_CHSETTINGS;
203 	chs->valid = 0;
204 	chs->version = 1;
205 	chs->reserved = 0;
206 	chs->flags = 0;
207 
208 	toc++;
209 	memset(toc, 0xff, sizeof(*toc));
210 
211 	gph->size = sbuf->st_size - OMAP_FILE_HDR_SIZE;
212 	gph->load_addr = params->addr;
213 
214 	if (strncmp(params->imagename, "byteswap", 8) == 0) {
215 		do_swap32 = 1;
216 		int swapped = 0;
217 		uint32_t *data = (uint32_t *)ptr;
218 
219 		while (swapped <= (sbuf->st_size / sizeof(uint32_t))) {
220 			*data = omapimage_swap32(*data);
221 			swapped++;
222 			data++;
223 		}
224 	}
225 }
226 
227 int omapimage_check_params(struct image_tool_params *params)
228 {
229 	return	(params->dflag && (params->fflag || params->lflag)) ||
230 		(params->fflag && (params->dflag || params->lflag)) ||
231 		(params->lflag && (params->dflag || params->fflag));
232 }
233 
234 /*
235  * omapimage parameters
236  */
237 static struct image_type_params omapimage_params = {
238 	.name		= "TI OMAP CH/GP Boot Image support",
239 	.header_size	= OMAP_FILE_HDR_SIZE,
240 	.hdr		= (void *)&omapimage_header,
241 	.check_image_type = omapimage_check_image_types,
242 	.verify_header	= omapimage_verify_header,
243 	.print_header	= omapimage_print_header,
244 	.set_header	= omapimage_set_header,
245 	.check_params	= omapimage_check_params,
246 };
247 
248 void init_omap_image_type(void)
249 {
250 	register_image_type(&omapimage_params);
251 }
252