18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * cmdline.c: read the command line passed to us by the PROM. 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * Copyright (C) 1998 Harald Koerfgen 68c2ecf20Sopenharmony_ci * Copyright (C) 2002, 2004 Maciej W. Rozycki 78c2ecf20Sopenharmony_ci */ 88c2ecf20Sopenharmony_ci#include <linux/init.h> 98c2ecf20Sopenharmony_ci#include <linux/kernel.h> 108c2ecf20Sopenharmony_ci#include <linux/string.h> 118c2ecf20Sopenharmony_ci#include <linux/types.h> 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ci#include <asm/bootinfo.h> 148c2ecf20Sopenharmony_ci#include <asm/dec/prom.h> 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci#undef PROM_DEBUG 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_civoid __init prom_init_cmdline(s32 argc, s32 *argv, u32 magic) 198c2ecf20Sopenharmony_ci{ 208c2ecf20Sopenharmony_ci char *arg; 218c2ecf20Sopenharmony_ci int start_arg, i; 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci /* 248c2ecf20Sopenharmony_ci * collect args and prepare cmd_line 258c2ecf20Sopenharmony_ci */ 268c2ecf20Sopenharmony_ci if (!prom_is_rex(magic)) 278c2ecf20Sopenharmony_ci start_arg = 1; 288c2ecf20Sopenharmony_ci else 298c2ecf20Sopenharmony_ci start_arg = 2; 308c2ecf20Sopenharmony_ci for (i = start_arg; i < argc; i++) { 318c2ecf20Sopenharmony_ci arg = (void *)(long)(argv[i]); 328c2ecf20Sopenharmony_ci strcat(arcs_cmdline, arg); 338c2ecf20Sopenharmony_ci if (i < (argc - 1)) 348c2ecf20Sopenharmony_ci strcat(arcs_cmdline, " "); 358c2ecf20Sopenharmony_ci } 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci#ifdef PROM_DEBUG 388c2ecf20Sopenharmony_ci printk("arcs_cmdline: %s\n", &(arcs_cmdline[0])); 398c2ecf20Sopenharmony_ci#endif 408c2ecf20Sopenharmony_ci} 41