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Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +05301/*
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 *
Wolfgang Denk1a459662013-07-08 09:37:19 +020014 * SPDX-License-Identifier: GPL-2.0+
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053015 */
16
17#include "mkimage.h"
18#include <image.h>
19#include <u-boot/crc.h>
20
21static image_header_t header;
22
Stephen Warren712fbcf2011-10-18 11:11:49 +000023static int image_check_image_types(uint8_t type)
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053024{
Stephen Warrenb9b50e892011-11-10 13:17:53 -070025 if (((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT)) ||
26 (type == IH_TYPE_KERNEL_NOLOAD))
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053027 return EXIT_SUCCESS;
28 else
29 return EXIT_FAILURE;
30}
31
Stephen Warren712fbcf2011-10-18 11:11:49 +000032static int image_check_params(struct mkimage_params *params)
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053033{
34 return ((params->dflag && (params->fflag || params->lflag)) ||
35 (params->fflag && (params->dflag || params->lflag)) ||
36 (params->lflag && (params->dflag || params->fflag)));
37}
38
Stephen Warren712fbcf2011-10-18 11:11:49 +000039static int image_verify_header(unsigned char *ptr, int image_size,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053040 struct mkimage_params *params)
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 */
Stephen Warren712fbcf2011-10-18 11:11:49 +000053 memcpy(hdr, ptr, sizeof(image_header_t));
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053054
55 if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) {
Stephen Warren712fbcf2011-10-18 11:11:49 +000056 fprintf(stderr,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053057 "%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
Stephen Warren712fbcf2011-10-18 11:11:49 +000068 if (crc32(0, data, len) != checksum) {
69 fprintf(stderr,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053070 "%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);
Stephen Warren712fbcf2011-10-18 11:11:49 +000079 if (crc32(0, data, len) != checksum) {
80 fprintf(stderr,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053081 "%s: ERROR: \"%s\" has corrupted data!\n",
82 params->cmdname, params->imagefile);
83 return -FDT_ERR_BADSTRUCTURE;
84 }
85 return 0;
86}
87
Stephen Warren712fbcf2011-10-18 11:11:49 +000088static void image_set_header(void *ptr, struct stat *sbuf, int ifd,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053089 struct mkimage_params *params)
90{
91 uint32_t checksum;
92
93 image_header_t * hdr = (image_header_t *)ptr;
94
Stephen Warren712fbcf2011-10-18 11:11:49 +000095 checksum = crc32(0,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053096 (const unsigned char *)(ptr +
97 sizeof(image_header_t)),
98 sbuf->st_size - sizeof(image_header_t));
99
100 /* Build new header */
Stephen Warren712fbcf2011-10-18 11:11:49 +0000101 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);
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530111
Stephen Warren712fbcf2011-10-18 11:11:49 +0000112 image_set_name(hdr, params->imagename);
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530113
Stephen Warren712fbcf2011-10-18 11:11:49 +0000114 checksum = crc32(0, (const unsigned char *)hdr,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530115 sizeof(image_header_t));
116
Stephen Warren712fbcf2011-10-18 11:11:49 +0000117 image_set_hcrc(hdr, checksum);
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530118}
119
120/*
121 * Default image type parameters definition
122 */
123static struct image_type_params defimage_params = {
124 .name = "Default Image support",
125 .header_size = sizeof(image_header_t),
126 .hdr = (void*)&header,
127 .check_image_type = image_check_image_types,
128 .verify_header = image_verify_header,
129 .print_header = image_print_contents,
130 .set_header = image_set_header,
131 .check_params = image_check_params,
132};
133
Stephen Warren712fbcf2011-10-18 11:11:49 +0000134void init_default_image_type(void)
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530135{
Stephen Warren712fbcf2011-10-18 11:11:49 +0000136 mkimage_register(&defimage_params);
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530137}