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
28void fit_print_header(const void *fit, struct image_tool_params *params)
29{
30	fit_print_contents(fit);
31}
32
33int 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
51int 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
59int 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
121err:
122	if (fd >= 0)
123		close(fd);
124	if (delete_on_error)
125		unlink(fname);
126
127	return -1;
128}
129
130int 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
186void 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