1 /*
2  * cmdline.c: read the command line passed to us by the PROM.
3  *
4  * Copyright (C) 1998 Harald Koerfgen
5  * Copyright (C) 2002, 2004  Maciej W. Rozycki
6  */
7 #include <linux/init.h>
8 #include <linux/kernel.h>
9 #include <linux/string.h>
10 #include <linux/types.h>
11 
12 #include <asm/bootinfo.h>
13 #include <asm/dec/prom.h>
14 
15 #undef PROM_DEBUG
16 
17 char arcs_cmdline[CL_SIZE];
18 
prom_init_cmdline(s32 argc,s32 * argv,u32 magic)19 void __init prom_init_cmdline(s32 argc, s32 *argv, u32 magic)
20 {
21 	char *arg;
22 	int start_arg, i;
23 
24 	/*
25 	 * collect args and prepare cmd_line
26 	 */
27 	if (!prom_is_rex(magic))
28 		start_arg = 1;
29 	else
30 		start_arg = 2;
31 	for (i = start_arg; i < argc; i++) {
32 		arg = (void *)(long)(argv[i]);
33 		strcat(arcs_cmdline, arg);
34 		if (i < (argc - 1))
35 			strcat(arcs_cmdline, " ");
36 	}
37 
38 #ifdef PROM_DEBUG
39 	printk("arcs_cmdline: %s\n", &(arcs_cmdline[0]));
40 #endif
41 }
42