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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
#include <common.h>
#include <command.h>
#ifndef CONFIG_CRC32_VERIFY
int do_mem_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
ulong addr, length;
ulong crc;
ulong *ptr;
if (argc < 3) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
addr = simple_strtoul (argv[1], NULL, 16);
length = simple_strtoul (argv[2], NULL, 16);
crc = crc32 (0, (const uchar *) addr, length);
printf ("CRC32 for %08lx ... %08lx ==> %08lx\n",
addr, addr + length - 1, crc);
if (argc > 3) {
ptr = (ulong *) simple_strtoul (argv[3], NULL, 16);
*ptr = crc;
}
return 0;
}
#else /* CONFIG_CRC32_VERIFY */
int do_mem_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
ulong addr, length;
ulong crc;
ulong *ptr;
ulong vcrc;
int verify;
int ac;
char **av;
if (argc < 3) {
usage:
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
av = argv + 1;
ac = argc - 1;
if (strcmp(*av, "-v") == 0) {
verify = 1;
av++;
ac--;
if (ac < 3)
goto usage;
} else
verify = 0;
addr = simple_strtoul(*av++, NULL, 16);
length = simple_strtoul(*av++, NULL, 16);
crc = crc32(0, (const uchar *) addr, length);
if (!verify) {
printf ("CRC32 for %08lx ... %08lx ==> %08lx\n",
addr, addr + length - 1, crc);
if (ac > 2) {
ptr = (ulong *) simple_strtoul (*av++, NULL, 16);
*ptr = crc;
}
} else {
vcrc = simple_strtoul(*av++, NULL, 16);
if (vcrc != crc) {
printf ("CRC32 for %08lx ... %08lx ==> %08lx != %08lx ** ERROR **\n",
addr, addr + length - 1, crc, vcrc);
return 1;
}
}
return 0;
}
#endif /* CONFIG_CRC32_VERIFY */
#ifndef CONFIG_CRC32_VERIFY
U_BOOT_CMD_START(crc32)
.maxargs = 4,
.cmd = do_mem_crc,
.usage = "checksum calculation",
U_BOOT_CMD_HELP("address count [addr]\n - compute CRC32 checksum [save at addr]\n")
U_BOOT_CMD_END
#else /* CONFIG_CRC32_VERIFY */
U_BOOT_CMD(
crc32, 5, 0, do_mem_crc,
"crc32 - checksum calculation\n",
"address count [addr]\n - compute CRC32 checksum [save at addr]\n"
"-v address count crc\n - verify crc of memory area\n"
);
#endif /* CONFIG_CRC32_VERIFY */
|
