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