1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2014
4 * DENX Software Engineering
5 * Heiko Schocher <hs@denx.de>
6 *
7 * (C) Copyright 2008 Semihalf
8 *
9 * (C) Copyright 2000-2004
10 * DENX Software Engineering
11 * Wolfgang Denk, wd@denx.de
12 *
13 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
14 * FIT image specific code abstracted from mkimage.c
15 * some functions added to address abstraction
16 *
17 * All rights reserved.
18 */
19
20 #include "imagetool.h"
21 #include "mkimage.h"
22 #include "fit_common.h"
23 #include <image.h>
24 #include <u-boot/crc.h>
25
26 #define COPYFILE_BUFSIZE (64 * 1024)
27
fit_print_header(const void * fit,struct image_tool_params * params)28 void fit_print_header(const void *fit, struct image_tool_params *params)
29 {
30 fit_print_contents(fit);
31 }
32
fit_verify_header(unsigned char * ptr,int image_size,struct image_tool_params * params)33 int fit_verify_header(unsigned char *ptr, int image_size,
34 struct image_tool_params *params)
35 {
36 int ret;
37
38 if (fdt_check_header(ptr) != EXIT_SUCCESS)
39 return EXIT_FAILURE;
40
41 ret = fit_check_format(ptr, IMAGE_SIZE_INVAL);
42 if (ret) {
43 if (ret != -EADDRNOTAVAIL)
44 return EXIT_FAILURE;
45 fprintf(stderr, "Image contains unit addresses @, this will break signing\n");
46 }
47
48 return EXIT_SUCCESS;
49 }
50
fit_check_image_types(uint8_t type)51 int fit_check_image_types(uint8_t type)
52 {
53 if (type == IH_TYPE_FLATDT)
54 return EXIT_SUCCESS;
55 else
56 return EXIT_FAILURE;
57 }
58
mmap_fdt(const char * cmdname,const char * fname,size_t size_inc,void ** blobp,struct stat * sbuf,bool delete_on_error,bool read_only)59 int mmap_fdt(const char *cmdname, const char *fname, size_t size_inc,
60 void **blobp, struct stat *sbuf, bool delete_on_error,
61 bool read_only)
62 {
63 void *ptr;
64 int fd;
65
66 /* Load FIT blob into memory (we need to write hashes/signatures) */
67 fd = open(fname, (read_only ? O_RDONLY : O_RDWR) | O_BINARY);
68
69 if (fd < 0) {
70 fprintf(stderr, "%s: Can't open %s: %s\n",
71 cmdname, fname, strerror(errno));
72 goto err;
73 }
74
75 if (fstat(fd, sbuf) < 0) {
76 fprintf(stderr, "%s: Can't stat %s: %s\n",
77 cmdname, fname, strerror(errno));
78 goto err;
79 }
80
81 if (size_inc) {
82 sbuf->st_size += size_inc;
83 if (ftruncate(fd, sbuf->st_size)) {
84 fprintf(stderr, "%s: Can't expand %s: %s\n",
85 cmdname, fname, strerror(errno));
86 goto err;
87 }
88 }
89
90 errno = 0;
91 ptr = mmap(0, sbuf->st_size,
92 (read_only ? PROT_READ : PROT_READ | PROT_WRITE), MAP_SHARED,
93 fd, 0);
94 if ((ptr == MAP_FAILED) || (errno != 0)) {
95 fprintf(stderr, "%s: Can't read %s: %s\n",
96 cmdname, fname, strerror(errno));
97 goto err;
98 }
99
100 /* check if ptr has a valid blob */
101 if (fdt_check_header(ptr)) {
102 fprintf(stderr, "%s: Invalid FIT blob\n", cmdname);
103 goto err;
104 }
105
106 /* expand if needed */
107 if (size_inc) {
108 int ret;
109
110 ret = fdt_open_into(ptr, ptr, sbuf->st_size);
111 if (ret) {
112 fprintf(stderr, "%s: Cannot expand FDT: %s\n",
113 cmdname, fdt_strerror(ret));
114 goto err;
115 }
116 }
117
118 *blobp = ptr;
119 return fd;
120
121 err:
122 if (fd >= 0)
123 close(fd);
124 if (delete_on_error)
125 unlink(fname);
126
127 return -1;
128 }
129
copyfile(const char * src,const char * dst)130 int copyfile(const char *src, const char *dst)
131 {
132 int fd_src = -1, fd_dst = -1;
133 void *buf = NULL;
134 ssize_t size;
135 size_t count;
136 int ret = -1;
137
138 fd_src = open(src, O_RDONLY);
139 if (fd_src < 0) {
140 printf("Can't open file %s (%s)\n", src, strerror(errno));
141 goto out;
142 }
143
144 fd_dst = open(dst, O_WRONLY | O_CREAT | O_TRUNC, 0666);
145 if (fd_dst < 0) {
146 printf("Can't open file %s (%s)\n", dst, strerror(errno));
147 goto out;
148 }
149
150 buf = calloc(1, COPYFILE_BUFSIZE);
151 if (!buf) {
152 printf("Can't allocate buffer to copy file\n");
153 goto out;
154 }
155
156 while (1) {
157 size = read(fd_src, buf, COPYFILE_BUFSIZE);
158 if (size < 0) {
159 printf("Can't read file %s\n", src);
160 goto out;
161 }
162 if (!size)
163 break;
164
165 count = size;
166 size = write(fd_dst, buf, count);
167 if (size < 0) {
168 printf("Can't write file %s\n", dst);
169 goto out;
170 }
171 }
172
173 ret = 0;
174
175 out:
176 if (fd_src >= 0)
177 close(fd_src);
178 if (fd_dst >= 0)
179 close(fd_dst);
180 if (buf)
181 free(buf);
182
183 return ret;
184 }
185
summary_show(struct image_summary * summary,const char * imagefile,const char * keydest)186 void summary_show(struct image_summary *summary, const char *imagefile,
187 const char *keydest)
188 {
189 if (summary->sig_offset) {
190 printf("Signature written to '%s', node '%s'\n", imagefile,
191 summary->sig_path);
192 if (keydest) {
193 printf("Public key written to '%s', node '%s'\n",
194 keydest, summary->keydest_path);
195 }
196 }
197 }
198