xref: /openbmc/u-boot/tools/omapimage.c (revision e8f80a5a)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2010
4  * Linaro LTD, www.linaro.org
5  * Author: John Rigby <john.rigby@linaro.org>
6  * Based on TI's signGP.c
7  *
8  * (C) Copyright 2009
9  * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
10  *
11  * (C) Copyright 2008
12  * Marvell Semiconductor <www.marvell.com>
13  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
14  */
15 
16 #include "imagetool.h"
17 #include <compiler.h>
18 #include <image.h>
19 #include "gpheader.h"
20 #include "omapimage.h"
21 
22 #define DIV_ROUND_UP(n, d)     (((n) + (d) - 1) / (d))
23 
24 /* Header size is CH header rounded up to 512 bytes plus GP header */
25 #define OMAP_CH_HDR_SIZE 512
26 #define OMAP_FILE_HDR_SIZE (OMAP_CH_HDR_SIZE + GPIMAGE_HDR_SIZE)
27 
28 static int do_swap32 = 0;
29 
30 static uint8_t omapimage_header[OMAP_FILE_HDR_SIZE];
31 
omapimage_check_image_types(uint8_t type)32 static int omapimage_check_image_types(uint8_t type)
33 {
34 	if (type == IH_TYPE_OMAPIMAGE)
35 		return EXIT_SUCCESS;
36 	return EXIT_FAILURE;
37 }
38 
omapimage_verify_header(unsigned char * ptr,int image_size,struct image_tool_params * params)39 static int omapimage_verify_header(unsigned char *ptr, int image_size,
40 			struct image_tool_params *params)
41 {
42 	struct ch_toc *toc = (struct ch_toc *)ptr;
43 	struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
44 	uint32_t offset, size;
45 
46 	while (toc->section_offset != 0xffffffff
47 			&& toc->section_size != 0xffffffff) {
48 		if (do_swap32) {
49 			offset = cpu_to_be32(toc->section_offset);
50 			size = cpu_to_be32(toc->section_size);
51 		} else {
52 			offset = toc->section_offset;
53 			size = toc->section_size;
54 		}
55 		if (!offset || !size)
56 			return -1;
57 		if (offset >= OMAP_CH_HDR_SIZE ||
58 		    offset+size >= OMAP_CH_HDR_SIZE)
59 			return -1;
60 		toc++;
61 	}
62 
63 	return gph_verify_header(gph, do_swap32);
64 }
65 
omapimage_print_section(struct ch_settings * chs)66 static void omapimage_print_section(struct ch_settings *chs)
67 {
68 	const char *section_name;
69 
70 	if (chs->section_key)
71 		section_name = "CHSETTINGS";
72 	else
73 		section_name = "UNKNOWNKEY";
74 
75 	printf("%s (%x) "
76 		"valid:%x "
77 		"version:%x "
78 		"reserved:%x "
79 		"flags:%x\n",
80 		section_name,
81 		chs->section_key,
82 		chs->valid,
83 		chs->version,
84 		chs->reserved,
85 		chs->flags);
86 }
87 
omapimage_print_header(const void * ptr)88 static void omapimage_print_header(const void *ptr)
89 {
90 	const struct ch_toc *toc = (struct ch_toc *)ptr;
91 	const struct gp_header *gph =
92 			(struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
93 	uint32_t offset, size;
94 
95 	while (toc->section_offset != 0xffffffff
96 			&& toc->section_size != 0xffffffff) {
97 		if (do_swap32) {
98 			offset = cpu_to_be32(toc->section_offset);
99 			size = cpu_to_be32(toc->section_size);
100 		} else {
101 			offset = toc->section_offset;
102 			size = toc->section_size;
103 		}
104 
105 		if (offset >= OMAP_CH_HDR_SIZE ||
106 		    offset+size >= OMAP_CH_HDR_SIZE)
107 			exit(EXIT_FAILURE);
108 
109 		printf("Section %s offset %x length %x\n",
110 			toc->section_name,
111 			toc->section_offset,
112 			toc->section_size);
113 
114 		omapimage_print_section((struct ch_settings *)(ptr+offset));
115 		toc++;
116 	}
117 
118 	gph_print_header(gph, do_swap32);
119 }
120 
toc_offset(void * hdr,void * member)121 static int toc_offset(void *hdr, void *member)
122 {
123 	return member - hdr;
124 }
125 
omapimage_set_header(void * ptr,struct stat * sbuf,int ifd,struct image_tool_params * params)126 static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
127 				struct image_tool_params *params)
128 {
129 	struct ch_toc *toc = (struct ch_toc *)ptr;
130 	struct ch_settings *chs = (struct ch_settings *)
131 					(ptr + 2 * sizeof(*toc));
132 	struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);
133 
134 	toc->section_offset = toc_offset(ptr, chs);
135 	toc->section_size = sizeof(struct ch_settings);
136 	strcpy((char *)toc->section_name, "CHSETTINGS");
137 
138 	chs->section_key = KEY_CHSETTINGS;
139 	chs->valid = 0;
140 	chs->version = 1;
141 	chs->reserved = 0;
142 	chs->flags = 0;
143 
144 	toc++;
145 	memset(toc, 0xff, sizeof(*toc));
146 
147 	gph_set_header(gph, sbuf->st_size - OMAP_CH_HDR_SIZE,
148 		       params->addr, 0);
149 
150 	if (strncmp(params->imagename, "byteswap", 8) == 0) {
151 		do_swap32 = 1;
152 		int swapped = 0;
153 		uint32_t *data = (uint32_t *)ptr;
154 		const off_t size_in_words =
155 			DIV_ROUND_UP(sbuf->st_size, sizeof(uint32_t));
156 
157 		while (swapped < size_in_words) {
158 			*data = cpu_to_be32(*data);
159 			swapped++;
160 			data++;
161 		}
162 	}
163 }
164 
165 /*
166  * omapimage parameters
167  */
168 U_BOOT_IMAGE_TYPE(
169 	omapimage,
170 	"TI OMAP CH/GP Boot Image support",
171 	OMAP_FILE_HDR_SIZE,
172 	(void *)&omapimage_header,
173 	gpimage_check_params,
174 	omapimage_verify_header,
175 	omapimage_print_header,
176 	omapimage_set_header,
177 	NULL,
178 	omapimage_check_image_types,
179 	NULL,
180 	NULL
181 );
182