105 lines
2 KiB
C
Executable file
105 lines
2 KiB
C
Executable file
/*
|
|
* 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 (davem@davemloft.net)
|
|
*/
|
|
#include <linux/bug.h>
|
|
#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
|
|
}
|