1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2008 Semihalf
4 *
5 * (C) Copyright 2000-2004
6 * DENX Software Engineering
7 * Wolfgang Denk, wd@denx.de
8 *
9 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
10 * default_image specific code abstracted from mkimage.c
11 * some functions added to address abstraction
12 *
13 * All rights reserved.
14 */
15
16 #include "imagetool.h"
17 #include "mkimage.h"
18
19 #include <image.h>
20 #include <tee/optee.h>
21 #include <u-boot/crc.h>
22 #include <imximage.h>
23
24 static struct legacy_img_hdr header;
25
image_check_image_types(uint8_t type)26 static int image_check_image_types(uint8_t type)
27 {
28 if (((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT)) ||
29 (type == IH_TYPE_KERNEL_NOLOAD) || (type == IH_TYPE_FIRMWARE_IVT) ||
30 (type == IH_TYPE_FDT_LEGACY))
31 return EXIT_SUCCESS;
32 else
33 return EXIT_FAILURE;
34 }
35
image_check_params(struct image_tool_params * params)36 static int image_check_params(struct image_tool_params *params)
37 {
38 return ((params->dflag && (params->fflag || params->lflag)) ||
39 (params->fflag && (params->dflag || params->lflag)) ||
40 (params->lflag && (params->dflag || params->fflag)));
41 }
42
image_print_header(const void * ptr,struct image_tool_params * params)43 static void image_print_header(const void *ptr, struct image_tool_params *params)
44 {
45 image_print_contents(ptr);
46 }
47
image_verify_header(unsigned char * ptr,int image_size,struct image_tool_params * params)48 static int image_verify_header(unsigned char *ptr, int image_size,
49 struct image_tool_params *params)
50 {
51 uint32_t len;
52 const unsigned char *data;
53 uint32_t checksum;
54 struct legacy_img_hdr header;
55 struct legacy_img_hdr *hdr = &header;
56
57 if (image_size < sizeof(struct legacy_img_hdr)) {
58 debug("%s: Bad image size: \"%s\" is no valid image\n",
59 params->cmdname, params->imagefile);
60 return -FDT_ERR_BADSTRUCTURE;
61 }
62
63 /*
64 * create copy of header so that we can blank out the
65 * checksum field for checking - this can't be done
66 * on the PROT_READ mapped data.
67 */
68 memcpy(hdr, ptr, sizeof(struct legacy_img_hdr));
69
70 if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) {
71 debug("%s: Bad Magic Number: \"%s\" is no valid image\n",
72 params->cmdname, params->imagefile);
73 return -FDT_ERR_BADMAGIC;
74 }
75
76 data = (const unsigned char *)hdr;
77 len = sizeof(struct legacy_img_hdr);
78
79 checksum = be32_to_cpu(hdr->ih_hcrc);
80 hdr->ih_hcrc = cpu_to_be32(0); /* clear for re-calculation */
81
82 if (crc32(0, data, len) != checksum) {
83 debug("%s: ERROR: \"%s\" has bad header checksum!\n",
84 params->cmdname, params->imagefile);
85 return -FDT_ERR_BADSTATE;
86 }
87
88 data = (const unsigned char *)ptr + sizeof(struct legacy_img_hdr);
89 len = image_get_data_size(hdr);
90
91 if (image_get_type(hdr) == IH_TYPE_FIRMWARE_IVT)
92 /* Add size of CSF minus IVT */
93 len -= 0x2060 - sizeof(flash_header_v2_t);
94
95 if (image_size - sizeof(struct legacy_img_hdr) < len) {
96 debug("%s: Bad image size: \"%s\" is no valid image\n",
97 params->cmdname, params->imagefile);
98 return -FDT_ERR_BADSTRUCTURE;
99 }
100
101 checksum = be32_to_cpu(hdr->ih_dcrc);
102 if (crc32(0, data, len) != checksum) {
103 debug("%s: ERROR: \"%s\" has corrupted data!\n",
104 params->cmdname, params->imagefile);
105 return -FDT_ERR_BADSTRUCTURE;
106 }
107 return 0;
108 }
109
image_set_header(void * ptr,struct stat * sbuf,int ifd,struct image_tool_params * params)110 static void image_set_header(void *ptr, struct stat *sbuf, int ifd,
111 struct image_tool_params *params)
112 {
113 uint32_t checksum;
114 time_t time;
115 uint32_t imagesize;
116 uint32_t ep;
117 uint32_t addr;
118 int type;
119 struct legacy_img_hdr *hdr = (struct legacy_img_hdr *)ptr;
120
121 checksum = crc32(0,
122 (const unsigned char *)(ptr +
123 sizeof(struct legacy_img_hdr)),
124 sbuf->st_size - sizeof(struct legacy_img_hdr));
125
126 time = imagetool_get_source_date(params->cmdname, sbuf->st_mtime);
127 ep = params->ep;
128 addr = params->addr;
129
130 if (params->type == IH_TYPE_FIRMWARE_IVT)
131 /* Add size of CSF minus IVT */
132 imagesize = sbuf->st_size - sizeof(struct legacy_img_hdr)
133 + 0x2060 - sizeof(flash_header_v2_t);
134
135 else
136 imagesize = sbuf->st_size - sizeof(struct legacy_img_hdr);
137
138 if (params->type == IH_TYPE_FDT_LEGACY)
139 type = IH_TYPE_FLATDT;
140 else
141 type = params->type;
142
143 if (params->os == IH_OS_TEE) {
144 addr = optee_image_get_load_addr(hdr);
145 ep = optee_image_get_entry_point(hdr);
146 }
147
148 /* Build new header */
149 image_set_magic(hdr, IH_MAGIC);
150 image_set_time(hdr, time);
151 image_set_size(hdr, imagesize);
152 image_set_load(hdr, addr);
153 image_set_ep(hdr, ep);
154 image_set_dcrc(hdr, checksum);
155 image_set_os(hdr, params->os);
156 image_set_arch(hdr, params->arch);
157 image_set_type(hdr, type);
158 image_set_comp(hdr, params->comp);
159
160 image_set_name(hdr, params->imagename);
161
162 checksum = crc32(0, (const unsigned char *)hdr,
163 sizeof(struct legacy_img_hdr));
164
165 image_set_hcrc(hdr, checksum);
166 }
167
image_extract_subimage(void * ptr,struct image_tool_params * params)168 static int image_extract_subimage(void *ptr, struct image_tool_params *params)
169 {
170 const struct legacy_img_hdr *hdr = (const struct legacy_img_hdr *)ptr;
171 ulong file_data;
172 ulong file_len;
173
174 if (image_check_type(hdr, IH_TYPE_MULTI)) {
175 ulong idx = params->pflag;
176 ulong count;
177
178 /* get the number of data files present in the image */
179 count = image_multi_count(hdr);
180
181 /* retrieve the "data file" at the idx position */
182 image_multi_getimg(hdr, idx, &file_data, &file_len);
183
184 if ((file_len == 0) || (idx >= count)) {
185 fprintf(stderr, "%s: No such data file %ld in \"%s\"\n",
186 params->cmdname, idx, params->imagefile);
187 return -1;
188 }
189 } else {
190 file_data = image_get_data(hdr);
191 file_len = image_get_size(hdr);
192 }
193
194 /* save the "data file" into the file system */
195 return imagetool_save_subimage(params->outfile, file_data, file_len);
196 }
197
198 /*
199 * Default image type parameters definition
200 */
201 U_BOOT_IMAGE_TYPE(
202 defimage,
203 "Default Image support",
204 sizeof(struct legacy_img_hdr),
205 (void *)&header,
206 image_check_params,
207 image_verify_header,
208 image_print_header,
209 image_set_header,
210 image_extract_subimage,
211 image_check_image_types,
212 NULL,
213 NULL
214 );
215