dec/prom/cmdline.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * cmdline.c: read the command line passed to us by the PROM.
0004  *
0005  * Copyright (C) 1998 Harald Koerfgen
0006  * Copyright (C) 2002, 2004  Maciej W. Rozycki
0007  */
0008 #include <linux/init.h>
0009 #include <linux/kernel.h>
0010 #include <linux/string.h>
0011 #include <linux/types.h>
0012
0013 #include <asm/bootinfo.h>
0014 #include <asm/dec/prom.h>
0015
0016 #undef PROM_DEBUG
0017
0018 void __init prom_init_cmdline(s32 argc, s32 *argv, u32 magic)
0019 {
0020     char *arg;
0021     int start_arg, i;
0022
0023     /*
0024      * collect args and prepare cmd_line
0025      */
0026     if (!prom_is_rex(magic))
0027         start_arg = 1;
0028     else
0029         start_arg = 2;
0030     for (i = start_arg; i < argc; i++) {
0031         arg = (void *)(long)(argv[i]);
0032         strcat(arcs_cmdline, arg);
0033         if (i < (argc - 1))
0034             strcat(arcs_cmdline, " ");
0035     }
0036
0037 #ifdef PROM_DEBUG
0038     printk("arcs_cmdline: %s\n", &(arcs_cmdline[0]));
0039 #endif
0040 }