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 (davem@davemloft.net)
9 */
10#include <linux/init.h>
11#include <linux/kernel.h>
12
13#include <asm/bootinfo.h>
14#include <asm/sgialib.h>
15#include <asm/smp-ops.h>
16
17#undef DEBUG_PROM_INIT
18
19/* Master romvec interface. */
20struct linux_romvec *romvec;
21int prom_argc;
22LONG *_prom_argv, *_prom_envp;
23
24void __init prom_init(void)
25{
26	PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK;
27
28	romvec = ROMVECTOR;
29
30	prom_argc = fw_arg0;
31	_prom_argv = (LONG *) fw_arg1;
32	_prom_envp = (LONG *) fw_arg2;
33
34	if (pb->magic != 0x53435241) {
35		printk(KERN_CRIT "Aieee, bad prom vector magic %08lx\n",
36		       (unsigned long) pb->magic);
37		while(1)
38			;
39	}
40
41	prom_init_cmdline();
42	prom_identify_arch();
43	printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n",
44	       pb->ver, pb->rev);
45	prom_meminit();
46
47#ifdef DEBUG_PROM_INIT
48	pr_info("Press a key to reboot\n");
49	ArcRead(0, &c, 1, &cnt);
50	ArcEnterInteractiveMode();
51#endif
52#ifdef CONFIG_SGI_IP27
53	{
54		extern struct plat_smp_ops ip27_smp_ops;
55
56		register_smp_ops(&ip27_smp_ops);
57	}
58#endif
59}
60