1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * PROM library initialisation code. 7 * 8 * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) 9 */ 10#include <linux/init.h> 11#include <linux/kernel.h> 12 13#include <asm/sgialib.h> 14 15#undef DEBUG_PROM_INIT 16 17/* Master romvec interface. */ 18struct linux_romvec *romvec; 19int prom_argc; 20LONG *_prom_argv, *_prom_envp; 21 22void __init prom_init(int argc, char **argv, char **envp, int *prom_vec) 23{ 24 PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK; 25 romvec = ROMVECTOR; 26 prom_argc = argc; 27 _prom_argv = (LONG *) argv; 28 _prom_envp = (LONG *) envp; 29 30 if (pb->magic != 0x53435241) { 31 prom_printf("Aieee, bad prom vector magic %08lx\n", pb->magic); 32 while(1) 33 ; 34 } 35 36 prom_init_cmdline(); 37 prom_identify_arch(); 38 printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n", 39 pb->ver, pb->rev); 40 prom_meminit(); 41 42#ifdef DEBUG_PROM_INIT 43 prom_printf("Press a key to reboot\n"); 44 prom_getchar(); 45 ArcEnterInteractiveMode(); 46#endif 47} 48