zipitz2: enable LCD rotation
[oweals/u-boot.git] / tools / default_image.c
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  *
14  * SPDX-License-Identifier:     GPL-2.0+
15  */
16
17 #include "imagetool.h"
18 #include "mkimage.h"
19
20 #include <image.h>
21 #include <u-boot/crc.h>
22
23 static image_header_t header;
24
25 static int image_check_image_types(uint8_t type)
26 {
27         if (((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT)) ||
28             (type == IH_TYPE_KERNEL_NOLOAD))
29                 return EXIT_SUCCESS;
30         else
31                 return EXIT_FAILURE;
32 }
33
34 static int image_check_params(struct image_tool_params *params)
35 {
36         return  ((params->dflag && (params->fflag || params->lflag)) ||
37                 (params->fflag && (params->dflag || params->lflag)) ||
38                 (params->lflag && (params->dflag || params->fflag)));
39 }
40
41 static int image_verify_header(unsigned char *ptr, int image_size,
42                         struct image_tool_params *params)
43 {
44         uint32_t len;
45         const unsigned char *data;
46         uint32_t checksum;
47         image_header_t header;
48         image_header_t *hdr = &header;
49
50         /*
51          * create copy of header so that we can blank out the
52          * checksum field for checking - this can't be done
53          * on the PROT_READ mapped data.
54          */
55         memcpy(hdr, ptr, sizeof(image_header_t));
56
57         if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) {
58                 debug("%s: Bad Magic Number: \"%s\" is no valid image\n",
59                       params->cmdname, params->imagefile);
60                 return -FDT_ERR_BADMAGIC;
61         }
62
63         data = (const unsigned char *)hdr;
64         len  = sizeof(image_header_t);
65
66         checksum = be32_to_cpu(hdr->ih_hcrc);
67         hdr->ih_hcrc = cpu_to_be32(0);  /* clear for re-calculation */
68
69         if (crc32(0, data, len) != checksum) {
70                 debug("%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);
79         if (crc32(0, data, len) != checksum) {
80                 debug("%s: ERROR: \"%s\" has corrupted data!\n",
81                       params->cmdname, params->imagefile);
82                 return -FDT_ERR_BADSTRUCTURE;
83         }
84         return 0;
85 }
86
87 static void image_set_header(void *ptr, struct stat *sbuf, int ifd,
88                                 struct image_tool_params *params)
89 {
90         uint32_t checksum;
91         char *source_date_epoch;
92         time_t time;
93
94         image_header_t * hdr = (image_header_t *)ptr;
95
96         checksum = crc32(0,
97                         (const unsigned char *)(ptr +
98                                 sizeof(image_header_t)),
99                         sbuf->st_size - sizeof(image_header_t));
100
101         source_date_epoch = getenv("SOURCE_DATE_EPOCH");
102         if (source_date_epoch != NULL) {
103                 time = (time_t) strtol(source_date_epoch, NULL, 10);
104
105                 if (gmtime(&time) == NULL) {
106                         fprintf(stderr, "%s: SOURCE_DATE_EPOCH is not valid\n",
107                                 __func__);
108                         time = 0;
109                 }
110         } else {
111                 time = sbuf->st_mtime;
112         }
113
114         /* Build new header */
115         image_set_magic(hdr, IH_MAGIC);
116         image_set_time(hdr, time);
117         image_set_size(hdr, sbuf->st_size - sizeof(image_header_t));
118         image_set_load(hdr, params->addr);
119         image_set_ep(hdr, params->ep);
120         image_set_dcrc(hdr, checksum);
121         image_set_os(hdr, params->os);
122         image_set_arch(hdr, params->arch);
123         image_set_type(hdr, params->type);
124         image_set_comp(hdr, params->comp);
125
126         image_set_name(hdr, params->imagename);
127
128         checksum = crc32(0, (const unsigned char *)hdr,
129                                 sizeof(image_header_t));
130
131         image_set_hcrc(hdr, checksum);
132 }
133
134 static int image_extract_subimage(void *ptr, struct image_tool_params *params)
135 {
136         const image_header_t *hdr = (const image_header_t *)ptr;
137         ulong file_data;
138         ulong file_len;
139
140         if (image_check_type(hdr, IH_TYPE_MULTI)) {
141                 ulong idx = params->pflag;
142                 ulong count;
143
144                 /* get the number of data files present in the image */
145                 count = image_multi_count(hdr);
146
147                 /* retrieve the "data file" at the idx position */
148                 image_multi_getimg(hdr, idx, &file_data, &file_len);
149
150                 if ((file_len == 0) || (idx >= count)) {
151                         fprintf(stderr, "%s: No such data file %ld in \"%s\"\n",
152                                 params->cmdname, idx, params->imagefile);
153                         return -1;
154                 }
155         } else {
156                 file_data = image_get_data(hdr);
157                 file_len = image_get_size(hdr);
158         }
159
160         /* save the "data file" into the file system */
161         return imagetool_save_subimage(params->outfile, file_data, file_len);
162 }
163
164 /*
165  * Default image type parameters definition
166  */
167 U_BOOT_IMAGE_TYPE(
168         defimage,
169         "Default Image support",
170         sizeof(image_header_t),
171         (void *)&header,
172         image_check_params,
173         image_verify_header,
174         image_print_contents,
175         image_set_header,
176         image_extract_subimage,
177         image_check_image_types,
178         NULL,
179         NULL
180 );