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