2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * cmdline.c: Kernel command line creation using ARCS argc/argv.
8 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12 #include <linux/string.h>
14 #include <asm/sgialib.h>
15 #include <asm/bootinfo.h>
19 static char *ignored
[] = {
29 static char *used_arc
[][2] = {
30 { "OSLoadPartition=", "root=" },
31 { "OSLoadOptions=", "" }
34 static char * __init
move_firmware_args(char* cp
)
39 actr
= 1; /* Always ignore argv[0] */
41 while (actr
< prom_argc
) {
42 for(i
= 0; i
< ARRAY_SIZE(used_arc
); i
++) {
43 int len
= strlen(used_arc
[i
][0]);
45 if (!strncmp(prom_argv(actr
), used_arc
[i
][0], len
)) {
46 /* Ok, we want it. First append the replacement... */
47 strcat(cp
, used_arc
[i
][1]);
48 cp
+= strlen(used_arc
[i
][1]);
49 /* ... and now the argument */
50 s
= strchr(prom_argv(actr
), '=');
66 void __init
prom_init_cmdline(void)
71 actr
= 1; /* Always ignore argv[0] */
75 * Move ARC variables to the beginning to make sure they can be
76 * overridden by later arguments.
78 cp
= move_firmware_args(cp
);
80 while (actr
< prom_argc
) {
81 for (i
= 0; i
< ARRAY_SIZE(ignored
); i
++) {
82 int len
= strlen(ignored
[i
]);
84 if (!strncmp(prom_argv(actr
), ignored
[i
], len
))
88 strcpy(cp
, prom_argv(actr
));
89 cp
+= strlen(prom_argv(actr
));
96 if (cp
!= arcs_cmdline
) /* get rid of trailing space */
101 printk(KERN_DEBUG
"prom cmdline: %s\n", arcs_cmdline
);