]> git.sur5r.net Git - u-boot/blob - tools/fit_common.c
gpio: at91: add sanity check for the NULL pointer
[u-boot] / tools / fit_common.c
1 /*
2  * (C) Copyright 2014
3  * DENX Software Engineering
4  * Heiko Schocher <hs@denx.de>
5  *
6  * (C) Copyright 2008 Semihalf
7  *
8  * (C) Copyright 2000-2004
9  * DENX Software Engineering
10  * Wolfgang Denk, wd@denx.de
11  *
12  * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
13  *              FIT image specific code abstracted from mkimage.c
14  *              some functions added to address abstraction
15  *
16  * All rights reserved.
17  *
18  * SPDX-License-Identifier:     GPL-2.0+
19  */
20
21 #include "imagetool.h"
22 #include "mkimage.h"
23 #include "fit_common.h"
24 #include <image.h>
25 #include <u-boot/crc.h>
26
27 int fit_verify_header(unsigned char *ptr, int image_size,
28                         struct image_tool_params *params)
29 {
30         return fdt_check_header(ptr);
31 }
32
33 int fit_check_image_types(uint8_t type)
34 {
35         if (type == IH_TYPE_FLATDT)
36                 return EXIT_SUCCESS;
37         else
38                 return EXIT_FAILURE;
39 }
40
41 int mmap_fdt(char *cmdname, const char *fname, void **blobp,
42                 struct stat *sbuf, int useunlink)
43 {
44         void *ptr;
45         int fd;
46
47         /* Load FIT blob into memory (we need to write hashes/signatures) */
48         fd = open(fname, O_RDWR | O_BINARY);
49
50         if (fd < 0) {
51                 fprintf(stderr, "%s: Can't open %s: %s\n",
52                         cmdname, fname, strerror(errno));
53                 if (useunlink)
54                         unlink(fname);
55                 return -1;
56         }
57
58         if (fstat(fd, sbuf) < 0) {
59                 fprintf(stderr, "%s: Can't stat %s: %s\n",
60                         cmdname, fname, strerror(errno));
61                 if (useunlink)
62                         unlink(fname);
63                 return -1;
64         }
65
66         errno = 0;
67         ptr = mmap(0, sbuf->st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
68         if ((ptr == MAP_FAILED) || (errno != 0)) {
69                 fprintf(stderr, "%s: Can't read %s: %s\n",
70                         cmdname, fname, strerror(errno));
71                 if (useunlink)
72                         unlink(fname);
73                 return -1;
74         }
75
76         /* check if ptr has a valid blob */
77         if (fdt_check_header(ptr)) {
78                 fprintf(stderr, "%s: Invalid FIT blob\n", cmdname);
79                 if (useunlink)
80                         unlink(fname);
81                 return -1;
82         }
83
84         *blobp = ptr;
85         return fd;
86 }