tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 (dm@engr.sgi.com)
13 */
14#include <linux/config.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 group;
27 int type;
28 int flags;
29};
30
31static struct smatch mach_table[] = {
32 { "SGI-IP22",
33 "SGI Indy",
34 MACH_GROUP_SGI,
35 MACH_SGI_IP22,
36 PROM_FLAG_ARCS
37 }, { "SGI-IP27",
38 "SGI Origin",
39 MACH_GROUP_SGI,
40 MACH_SGI_IP27,
41 PROM_FLAG_ARCS
42 }, { "SGI-IP28",
43 "SGI IP28",
44 MACH_GROUP_SGI,
45 MACH_SGI_IP28,
46 PROM_FLAG_ARCS
47 }, { "SGI-IP30",
48 "SGI Octane",
49 MACH_GROUP_SGI,
50 MACH_SGI_IP30,
51 PROM_FLAG_ARCS
52 }, { "SGI-IP32",
53 "SGI O2",
54 MACH_GROUP_SGI,
55 MACH_SGI_IP32,
56 PROM_FLAG_ARCS
57 }, { "Microsoft-Jazz",
58 "Jazz MIPS_Magnum_4000",
59 MACH_GROUP_JAZZ,
60 MACH_MIPS_MAGNUM_4000,
61 0
62 }, { "PICA-61",
63 "Jazz Acer_PICA_61",
64 MACH_GROUP_JAZZ,
65 MACH_ACER_PICA_61,
66 0
67 }, { "RM200PCI",
68 "SNI RM200_PCI",
69 MACH_GROUP_SNI_RM,
70 MACH_SNI_RM200_PCI,
71 PROM_FLAG_DONT_FREE_TEMP
72 }
73};
74
75int prom_flags;
76
77static struct smatch * __init string_to_mach(const char *s)
78{
79 int i;
80
81 for (i = 0; i < (sizeof(mach_table) / sizeof (mach_table[0])); i++) {
82 if (!strcmp(s, mach_table[i].arcname))
83 return &mach_table[i];
84 }
85
86 panic("Yeee, could not determine architecture type <%s>", s);
87}
88
89char *system_type;
90
91const char *get_system_type(void)
92{
93 return system_type;
94}
95
96void __init prom_identify_arch(void)
97{
98 pcomponent *p;
99 struct smatch *mach;
100 const char *iname;
101
102 /*
103 * The root component tells us what machine architecture we have here.
104 */
105 p = ArcGetChild(PROM_NULL_COMPONENT);
106 if (p == NULL) {
107#ifdef CONFIG_SGI_IP27
108 /* IP27 PROM misbehaves, seems to not implement ARC
109 GetChild(). So we just assume it's an IP27. */
110 iname = "SGI-IP27";
111#else
112 iname = "Unknown";
113#endif
114 } else
115 iname = (char *) (long) p->iname;
116
117 printk("ARCH: %s\n", iname);
118 mach = string_to_mach(iname);
119 system_type = mach->liname;
120
121 mips_machgroup = mach->group;
122 mips_machtype = mach->type;
123 prom_flags = mach->flags;
124}