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
|
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* cmdline.c: Kernel command line creation using ARCS argc/argv.
*
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <asm/sgialib.h>
#include <asm/bootinfo.h>
#undef DEBUG_CMDLINE
static char *ignored[] = {
"ConsoleIn=",
"ConsoleOut=",
"SystemPartition=",
"OSLoader=",
"OSLoadPartition=",
"OSLoadFilename=",
"OSLoadOptions="
};
static char *used_arc[][2] = {
{ "OSLoadPartition=", "root=" },
{ "OSLoadOptions=", "" }
};
static char * __init move_firmware_args(char* cp)
{
char *s;
int actr, i;
actr = 1; /* Always ignore argv[0] */
while (actr < prom_argc) {
for(i = 0; i < ARRAY_SIZE(used_arc); i++) {
int len = strlen(used_arc[i][0]);
if (!strncmp(prom_argv(actr), used_arc[i][0], len)) {
/* Ok, we want it. First append the replacement... */
strcat(cp, used_arc[i][1]);
cp += strlen(used_arc[i][1]);
/* ... and now the argument */
s = strchr(prom_argv(actr), '=');
if (s) {
s++;
strcpy(cp, s);
cp += strlen(s);
}
*cp++ = ' ';
break;
}
}
actr++;
}
return cp;
}
void __init prom_init_cmdline(void)
{
char *cp;
int actr, i;
actr = 1; /* Always ignore argv[0] */
cp = arcs_cmdline;
/*
* Move ARC variables to the beginning to make sure they can be
* overridden by later arguments.
*/
cp = move_firmware_args(cp);
while (actr < prom_argc) {
for (i = 0; i < ARRAY_SIZE(ignored); i++) {
int len = strlen(ignored[i]);
if (!strncmp(prom_argv(actr), ignored[i], len))
goto pic_cont;
}
/* Ok, we want it. */
strcpy(cp, prom_argv(actr));
cp += strlen(prom_argv(actr));
*cp++ = ' ';
pic_cont:
actr++;
}
if (cp != arcs_cmdline) /* get rid of trailing space */
--cp;
*cp = '\0';
#ifdef DEBUG_CMDLINE
printk(KERN_DEBUG "prom cmdline: %s\n", arcs_cmdline);
#endif
}
|
