162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * cmdline.c: read the command line passed to us by the PROM. 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright (C) 1998 Harald Koerfgen 662306a36Sopenharmony_ci * Copyright (C) 2002, 2004 Maciej W. Rozycki 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci#include <linux/init.h> 962306a36Sopenharmony_ci#include <linux/kernel.h> 1062306a36Sopenharmony_ci#include <linux/string.h> 1162306a36Sopenharmony_ci#include <linux/types.h> 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ci#include <asm/bootinfo.h> 1462306a36Sopenharmony_ci#include <asm/dec/prom.h> 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_ci#undef PROM_DEBUG 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_civoid __init prom_init_cmdline(s32 argc, s32 *argv, u32 magic) 1962306a36Sopenharmony_ci{ 2062306a36Sopenharmony_ci char *arg; 2162306a36Sopenharmony_ci int start_arg, i; 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci /* 2462306a36Sopenharmony_ci * collect args and prepare cmd_line 2562306a36Sopenharmony_ci */ 2662306a36Sopenharmony_ci if (!prom_is_rex(magic)) 2762306a36Sopenharmony_ci start_arg = 1; 2862306a36Sopenharmony_ci else 2962306a36Sopenharmony_ci start_arg = 2; 3062306a36Sopenharmony_ci for (i = start_arg; i < argc; i++) { 3162306a36Sopenharmony_ci arg = (void *)(long)(argv[i]); 3262306a36Sopenharmony_ci strcat(arcs_cmdline, arg); 3362306a36Sopenharmony_ci if (i < (argc - 1)) 3462306a36Sopenharmony_ci strcat(arcs_cmdline, " "); 3562306a36Sopenharmony_ci } 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ci#ifdef PROM_DEBUG 3862306a36Sopenharmony_ci printk("arcs_cmdline: %s\n", &(arcs_cmdline[0])); 3962306a36Sopenharmony_ci#endif 4062306a36Sopenharmony_ci} 41