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89a4d6b1 PW |
1 | /* |
2 | * (C) Copyright 2008 Semihalf | |
3 | * | |
4 | * (C) Copyright 2000-2004 | |
5 | * DENX Software Engineering | |
6 | * Wolfgang Denk, wd@denx.de | |
7 | * | |
8 | * Updated-by: Prafulla Wadaskar <prafulla@marvell.com> | |
9 | * default_image specific code abstracted from mkimage.c | |
10 | * some functions added to address abstraction | |
11 | * | |
12 | * All rights reserved. | |
13 | * | |
1a459660 | 14 | * SPDX-License-Identifier: GPL-2.0+ |
89a4d6b1 PW |
15 | */ |
16 | ||
f86ed6a8 | 17 | #include "imagetool.h" |
89a4d6b1 PW |
18 | #include <image.h> |
19 | #include <u-boot/crc.h> | |
20 | ||
21 | static image_header_t header; | |
22 | ||
712fbcf3 | 23 | static int image_check_image_types(uint8_t type) |
89a4d6b1 | 24 | { |
b9b50e89 SW |
25 | if (((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT)) || |
26 | (type == IH_TYPE_KERNEL_NOLOAD)) | |
89a4d6b1 PW |
27 | return EXIT_SUCCESS; |
28 | else | |
29 | return EXIT_FAILURE; | |
30 | } | |
31 | ||
f86ed6a8 | 32 | static int image_check_params(struct image_tool_params *params) |
89a4d6b1 PW |
33 | { |
34 | return ((params->dflag && (params->fflag || params->lflag)) || | |
35 | (params->fflag && (params->dflag || params->lflag)) || | |
36 | (params->lflag && (params->dflag || params->fflag))); | |
37 | } | |
38 | ||
712fbcf3 | 39 | static int image_verify_header(unsigned char *ptr, int image_size, |
f86ed6a8 | 40 | struct image_tool_params *params) |
89a4d6b1 PW |
41 | { |
42 | uint32_t len; | |
43 | const unsigned char *data; | |
44 | uint32_t checksum; | |
45 | image_header_t header; | |
46 | image_header_t *hdr = &header; | |
47 | ||
48 | /* | |
49 | * create copy of header so that we can blank out the | |
50 | * checksum field for checking - this can't be done | |
51 | * on the PROT_READ mapped data. | |
52 | */ | |
712fbcf3 | 53 | memcpy(hdr, ptr, sizeof(image_header_t)); |
89a4d6b1 PW |
54 | |
55 | if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) { | |
712fbcf3 | 56 | fprintf(stderr, |
89a4d6b1 PW |
57 | "%s: Bad Magic Number: \"%s\" is no valid image\n", |
58 | params->cmdname, params->imagefile); | |
59 | return -FDT_ERR_BADMAGIC; | |
60 | } | |
61 | ||
62 | data = (const unsigned char *)hdr; | |
63 | len = sizeof(image_header_t); | |
64 | ||
65 | checksum = be32_to_cpu(hdr->ih_hcrc); | |
66 | hdr->ih_hcrc = cpu_to_be32(0); /* clear for re-calculation */ | |
67 | ||
712fbcf3 SW |
68 | if (crc32(0, data, len) != checksum) { |
69 | fprintf(stderr, | |
89a4d6b1 PW |
70 | "%s: ERROR: \"%s\" has bad header checksum!\n", |
71 | params->cmdname, params->imagefile); | |
72 | return -FDT_ERR_BADSTATE; | |
73 | } | |
74 | ||
75 | data = (const unsigned char *)ptr + sizeof(image_header_t); | |
76 | len = image_size - sizeof(image_header_t) ; | |
77 | ||
78 | checksum = be32_to_cpu(hdr->ih_dcrc); | |
712fbcf3 SW |
79 | if (crc32(0, data, len) != checksum) { |
80 | fprintf(stderr, | |
89a4d6b1 PW |
81 | "%s: ERROR: \"%s\" has corrupted data!\n", |
82 | params->cmdname, params->imagefile); | |
83 | return -FDT_ERR_BADSTRUCTURE; | |
84 | } | |
85 | return 0; | |
86 | } | |
87 | ||
712fbcf3 | 88 | static void image_set_header(void *ptr, struct stat *sbuf, int ifd, |
f86ed6a8 | 89 | struct image_tool_params *params) |
89a4d6b1 PW |
90 | { |
91 | uint32_t checksum; | |
92 | ||
93 | image_header_t * hdr = (image_header_t *)ptr; | |
94 | ||
712fbcf3 | 95 | checksum = crc32(0, |
89a4d6b1 PW |
96 | (const unsigned char *)(ptr + |
97 | sizeof(image_header_t)), | |
98 | sbuf->st_size - sizeof(image_header_t)); | |
99 | ||
100 | /* Build new header */ | |
712fbcf3 SW |
101 | image_set_magic(hdr, IH_MAGIC); |
102 | image_set_time(hdr, sbuf->st_mtime); | |
103 | image_set_size(hdr, sbuf->st_size - sizeof(image_header_t)); | |
104 | image_set_load(hdr, params->addr); | |
105 | image_set_ep(hdr, params->ep); | |
106 | image_set_dcrc(hdr, checksum); | |
107 | image_set_os(hdr, params->os); | |
108 | image_set_arch(hdr, params->arch); | |
109 | image_set_type(hdr, params->type); | |
110 | image_set_comp(hdr, params->comp); | |
111 | ||
112 | image_set_name(hdr, params->imagename); | |
113 | ||
114 | checksum = crc32(0, (const unsigned char *)hdr, | |
89a4d6b1 PW |
115 | sizeof(image_header_t)); |
116 | ||
712fbcf3 | 117 | image_set_hcrc(hdr, checksum); |
89a4d6b1 PW |
118 | } |
119 | ||
a804b5ce GMF |
120 | static int image_save_datafile(struct image_tool_params *params, |
121 | ulong file_data, ulong file_len) | |
122 | { | |
123 | int dfd; | |
124 | const char *datafile = params->outfile; | |
125 | ||
126 | dfd = open(datafile, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, | |
127 | S_IRUSR | S_IWUSR); | |
128 | if (dfd < 0) { | |
129 | fprintf(stderr, "%s: Can't open \"%s\": %s\n", | |
130 | params->cmdname, datafile, strerror(errno)); | |
131 | return -1; | |
132 | } | |
133 | ||
134 | if (write(dfd, (void *)file_data, file_len) != (ssize_t)file_len) { | |
135 | fprintf(stderr, "%s: Write error on \"%s\": %s\n", | |
136 | params->cmdname, datafile, strerror(errno)); | |
137 | close(dfd); | |
138 | return -1; | |
139 | } | |
140 | ||
141 | close(dfd); | |
142 | ||
143 | return 0; | |
144 | } | |
145 | ||
146 | static int image_extract_datafile(void *ptr, struct image_tool_params *params) | |
147 | { | |
148 | const image_header_t *hdr = (const image_header_t *)ptr; | |
149 | ulong file_data; | |
150 | ulong file_len; | |
151 | ||
152 | if (image_check_type(hdr, IH_TYPE_MULTI)) { | |
153 | ulong idx = params->pflag; | |
154 | ulong count; | |
155 | ||
156 | /* get the number of data files present in the image */ | |
157 | count = image_multi_count(hdr); | |
158 | ||
159 | /* retrieve the "data file" at the idx position */ | |
160 | image_multi_getimg(hdr, idx, &file_data, &file_len); | |
161 | ||
162 | if ((file_len == 0) || (idx >= count)) { | |
163 | fprintf(stderr, "%s: No such data file %ld in \"%s\"\n", | |
164 | params->cmdname, idx, params->imagefile); | |
165 | return -1; | |
166 | } | |
167 | } else { | |
168 | file_data = image_get_data(hdr); | |
169 | file_len = image_get_size(hdr); | |
170 | } | |
171 | ||
172 | /* save the "data file" into the file system */ | |
173 | return image_save_datafile(params, file_data, file_len); | |
174 | } | |
175 | ||
89a4d6b1 PW |
176 | /* |
177 | * Default image type parameters definition | |
178 | */ | |
179 | static struct image_type_params defimage_params = { | |
180 | .name = "Default Image support", | |
181 | .header_size = sizeof(image_header_t), | |
182 | .hdr = (void*)&header, | |
183 | .check_image_type = image_check_image_types, | |
184 | .verify_header = image_verify_header, | |
185 | .print_header = image_print_contents, | |
186 | .set_header = image_set_header, | |
a804b5ce | 187 | .extract_datafile = image_extract_datafile, |
89a4d6b1 PW |
188 | .check_params = image_check_params, |
189 | }; | |
190 | ||
712fbcf3 | 191 | void init_default_image_type(void) |
89a4d6b1 | 192 | { |
f86ed6a8 | 193 | register_image_type(&defimage_params); |
89a4d6b1 | 194 | } |