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 * identify.c: identify machine by looking up system identifier
7 *
8 * Copyright (C) 1998 Thomas Bogendoerfer
9 *
10 * This code is based on arch/mips/sgi/kernel/system.c, which is
11 *
12 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
13 */
14#include <linux/bug.h>
15#include <linux/init.h>
16#include <linux/kernel.h>
17#include <linux/types.h>
18#include <linux/string.h>
19
20#include <asm/sgialib.h>
21#include <asm/bootinfo.h>
22
23struct smatch {
24	char *arcname;
25	char *liname;
26	int flags;
27};
28
29static struct smatch mach_table[] = {
30	{
31		.arcname	= "SGI-IP22",
32		.liname		= "SGI Indy",
33		.flags		= PROM_FLAG_ARCS,
34	}, {
35		.arcname	= "SGI-IP28",
36		.liname		= "SGI IP28",
37		.flags		= PROM_FLAG_ARCS,
38	}, {
39		.arcname	= "SGI-IP30",
40		.liname		= "SGI Octane",
41		.flags		= PROM_FLAG_ARCS,
42	}, {
43		.arcname	= "SGI-IP32",
44		.liname		= "SGI O2",
45		.flags		= PROM_FLAG_ARCS,
46	}, {
47		.arcname	= "Microsoft-Jazz",
48		.liname		= "Jazz MIPS_Magnum_4000",
49		.flags		= 0,
50	}, {
51		.arcname	= "PICA-61",
52		.liname		= "Jazz Acer_PICA_61",
53		.flags		= 0,
54	}, {
55		.arcname	= "RM200PCI",
56		.liname		= "SNI RM200_PCI",
57		.flags		= PROM_FLAG_DONT_FREE_TEMP,
58	}, {
59		.arcname	= "RM200PCI-R5K",
60		.liname		= "SNI RM200_PCI-R5K",
61		.flags		= PROM_FLAG_DONT_FREE_TEMP,
62	}
63};
64
65int prom_flags;
66
67static struct smatch * __init string_to_mach(const char *s)
68{
69	int i;
70
71	for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
72		if (!strcmp(s, mach_table[i].arcname))
73			return &mach_table[i];
74	}
75
76	panic("Yeee, could not determine architecture type <%s>", s);
77}
78
79char *system_type;
80
81const char *get_system_type(void)
82{
83	return system_type;
84}
85
86static pcomponent * __init ArcGetChild(pcomponent *Current)
87{
88	return (pcomponent *) ARC_CALL1(child_component, Current);
89}
90
91void __init prom_identify_arch(void)
92{
93	pcomponent *p;
94	struct smatch *mach;
95	const char *iname;
96
97	/*
98	 * The root component tells us what machine architecture we have here.
99	 */
100	p = ArcGetChild(PROM_NULL_COMPONENT);
101	if (p == NULL) {
102		iname = "Unknown";
103	} else
104		iname = (char *) (long) p->iname;
105
106	printk("ARCH: %s\n", iname);
107	mach = string_to_mach(iname);
108	system_type = mach->liname;
109
110	prom_flags = mach->flags;
111}
112