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
23 struct smatch {
24 char *arcname;
25 char *liname;
26 int flags;
27 };
28
29 static 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
65 int prom_flags;
66
67 static 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
79 char *system_type;
80
81 const char *get_system_type(void)
82 {
83 return system_type;
84 }
85
86 static pcomponent * __init ArcGetChild(pcomponent *Current)
87 {
88 return (pcomponent *) ARC_CALL1(child_component, Current);
89 }
90
91 void __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
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