1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * cmdline.c: read the command line passed to us by the PROM.
4  *
5  * Copyright (C) 1998 Harald Koerfgen
6  * Copyright (C) 2002, 2004  Maciej W. Rozycki
7  */
8 #include <linux/init.h>
9 #include <linux/kernel.h>
10 #include <linux/string.h>
11 #include <linux/types.h>
12 
13 #include <asm/bootinfo.h>
14 #include <asm/dec/prom.h>
15 
16 #undef PROM_DEBUG
17 
prom_init_cmdline(s32 argc,s32 * argv,u32 magic)18 void __init prom_init_cmdline(s32 argc, s32 *argv, u32 magic)
19 {
20 	char *arg;
21 	int start_arg, i;
22 
23 	/*
24 	 * collect args and prepare cmd_line
25 	 */
26 	if (!prom_is_rex(magic))
27 		start_arg = 1;
28 	else
29 		start_arg = 2;
30 	for (i = start_arg; i < argc; i++) {
31 		arg = (void *)(long)(argv[i]);
32 		strcat(arcs_cmdline, arg);
33 		if (i < (argc - 1))
34 			strcat(arcs_cmdline, " ");
35 	}
36 
37 #ifdef PROM_DEBUG
38 	printk("arcs_cmdline: %s\n", &(arcs_cmdline[0]));
39 #endif
40 }
41