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-IP27",
36		.liname		= "SGI Origin",
37		.flags		= PROM_FLAG_ARCS,
38	}, {
39		.arcname	= "SGI-IP28",
40		.liname		= "SGI IP28",
41		.flags		= PROM_FLAG_ARCS,
42	}, {
43		.arcname	= "SGI-IP30",
44		.liname		= "SGI Octane",
45		.flags		= PROM_FLAG_ARCS,
46	}, {
47		.arcname	= "SGI-IP32",
48		.liname		= "SGI O2",
49		.flags		= PROM_FLAG_ARCS,
50	}, {
51		.arcname	= "Microsoft-Jazz",
52		.liname		= "Jazz MIPS_Magnum_4000",
53		.flags		= 0,
54	}, {
55		.arcname	= "PICA-61",
56		.liname		= "Jazz Acer_PICA_61",
57		.flags		= 0,
58	}, {
59		.arcname	= "RM200PCI",
60		.liname		= "SNI RM200_PCI",
61		.flags		= PROM_FLAG_DONT_FREE_TEMP,
62	}, {
63		.arcname	= "RM200PCI-R5K",
64		.liname		= "SNI RM200_PCI-R5K",
65		.flags		= PROM_FLAG_DONT_FREE_TEMP,
66	}
67};
68
69int prom_flags;
70
71static struct smatch * __init string_to_mach(const char *s)
72{
73	int i;
74
75	for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
76		if (!strcmp(s, mach_table[i].arcname))
77			return &mach_table[i];
78	}
79
80	panic("Yeee, could not determine architecture type <%s>", s);
81}
82
83char *system_type;
84
85const char *get_system_type(void)
86{
87	return system_type;
88}
89
90void __init prom_identify_arch(void)
91{
92	pcomponent *p;
93	struct smatch *mach;
94	const char *iname;
95
96	/*
97	 * The root component tells us what machine architecture we have here.
98	 */
99	p = ArcGetChild(PROM_NULL_COMPONENT);
100	if (p == NULL) {
101#ifdef CONFIG_SGI_IP27
102		/* IP27 PROM misbehaves, seems to not implement ARC
103		   GetChild().	So we just assume it's an IP27.	 */
104		iname = "SGI-IP27";
105#else
106		iname = "Unknown";
107#endif
108	} else
109		iname = (char *) (long) p->iname;
110
111	printk("ARCH: %s\n", iname);
112	mach = string_to_mach(iname);
113	system_type = mach->liname;
114
115	prom_flags = mach->flags;
116}
117