1
2
3
4
5
6
7
8#include <linux/string.h>
9#include <asm/oplib.h>
10#include <linux/init.h>
11
12#define BARG_LEN 256
13static char barg_buf[BARG_LEN] = { 0 };
14static char fetched __initdata = 0;
15
16char * __init
17prom_getbootargs(void)
18{
19 int iter;
20 char *cp, *arg;
21
22
23 if (fetched) {
24 return barg_buf;
25 }
26
27 switch (prom_vers) {
28 case PROM_V0:
29 cp = barg_buf;
30
31 for (iter = 1; iter < 8; iter++) {
32 arg = (*(romvec->pv_v0bootargs))->argv[iter];
33 if (arg == NULL)
34 break;
35 while (*arg != 0) {
36
37 if (cp >= barg_buf + BARG_LEN - 2)
38
39 break;
40 *cp++ = *arg++;
41 }
42 *cp++ = ' ';
43 if (cp >= barg_buf + BARG_LEN - 1)
44
45 break;
46 }
47 *cp = 0;
48 break;
49 case PROM_V2:
50 case PROM_V3:
51
52
53
54
55 strlcpy(barg_buf, *romvec->pv_v2bootargs.bootargs, sizeof(barg_buf));
56 break;
57 default:
58 break;
59 }
60
61 fetched = 1;
62 return barg_buf;
63}
64