1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2022
* Roger Knecht <rknecht@pm.de>
*/
#include <common.h>
#include <command.h>
#include <display_options.h>
#include <fs.h>
#include <malloc.h>
#include <mapmem.h>
static int do_xxd(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
char *ifname;
char *dev;
char *file;
char *buffer;
phys_addr_t addr;
loff_t file_size;
if (argc < 4)
return CMD_RET_USAGE;
ifname = argv[1];
dev = argv[2];
file = argv[3];
// check file exists
if (fs_set_blk_dev(ifname, dev, FS_TYPE_ANY))
return CMD_RET_FAILURE;
if (!fs_exists(file)) {
log_err("File does not exist: ifname=%s dev=%s file=%s\n", ifname, dev, file);
return CMD_RET_FAILURE;
}
// get file size
if (fs_set_blk_dev(ifname, dev, FS_TYPE_ANY))
return CMD_RET_FAILURE;
if (fs_size(file, &file_size)) {
log_err("Cannot read file size: ifname=%s dev=%s file=%s\n", ifname, dev, file);
return CMD_RET_FAILURE;
}
// allocate memory for file content
buffer = calloc(sizeof(char), file_size);
if (!buffer) {
log_err("Out of memory\n");
return CMD_RET_FAILURE;
}
// map pointer to system memory
addr = map_to_sysmem(buffer);
// read file to memory
if (fs_set_blk_dev(ifname, dev, FS_TYPE_ANY))
return CMD_RET_FAILURE;
if (fs_read(file, addr, 0, 0, &file_size)) {
log_err("Cannot read file: ifname=%s dev=%s file=%s\n", ifname, dev, file);
return CMD_RET_FAILURE;
}
// print file content
print_buffer(0, buffer, sizeof(char), file_size, 0);
free(buffer);
return 0;
}
#ifdef CONFIG_SYS_LONGHELP
static char xxd_help_text[] =
"<interface> <dev[:part]> <file>\n"
" - Print file from 'dev' on 'interface' as hexdump to standard output\n";
#endif
U_BOOT_CMD(xxd, 4, 1, do_xxd,
"Print file as hexdump to standard output",
xxd_help_text
);
|