Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
[linux-2.6] / arch / mips / fw / arc / identify.c
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/init.h>
15 #include <linux/kernel.h>
16 #include <linux/types.h>
17 #include <linux/string.h>
18
19 #include <asm/sgialib.h>
20 #include <asm/bootinfo.h>
21
22 struct smatch {
23         char *arcname;
24         char *liname;
25         int flags;
26 };
27
28 static struct smatch mach_table[] = {
29         {
30                 .arcname        = "SGI-IP22",
31                 .liname         = "SGI Indy",
32                 .flags          = PROM_FLAG_ARCS,
33         }, {
34                 .arcname        = "SGI-IP27",
35                 .liname         = "SGI Origin",
36                 .flags          = PROM_FLAG_ARCS,
37         }, {
38                 .arcname        = "SGI-IP28",
39                 .liname         = "SGI IP28",
40                 .flags          = PROM_FLAG_ARCS,
41         }, {
42                 .arcname        = "SGI-IP30",
43                 .liname         = "SGI Octane",
44                 .flags          = PROM_FLAG_ARCS,
45         }, {
46                 .arcname        = "SGI-IP32",
47                 .liname         = "SGI O2",
48                 .flags          = PROM_FLAG_ARCS,
49         }, {
50                 .arcname        = "Microsoft-Jazz",
51                 .liname         = "Jazz MIPS_Magnum_4000",
52                 .flags          = 0,
53         }, {
54                 .arcname        = "PICA-61",
55                 .liname         = "Jazz Acer_PICA_61",
56                 .flags          = 0,
57         }, {
58                 .arcname        = "RM200PCI",
59                 .liname         = "SNI RM200_PCI",
60                 .flags          = PROM_FLAG_DONT_FREE_TEMP,
61         }, {
62                 .arcname        = "RM200PCI-R5K",
63                 .liname         = "SNI RM200_PCI-R5K",
64                 .flags          = PROM_FLAG_DONT_FREE_TEMP,
65         }
66 };
67
68 int prom_flags;
69
70 static struct smatch * __init string_to_mach(const char *s)
71 {
72         int i;
73
74         for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
75                 if (!strcmp(s, mach_table[i].arcname))
76                         return &mach_table[i];
77         }
78
79         panic("Yeee, could not determine architecture type <%s>", s);
80 }
81
82 char *system_type;
83
84 const char *get_system_type(void)
85 {
86         return system_type;
87 }
88
89 void __init prom_identify_arch(void)
90 {
91         pcomponent *p;
92         struct smatch *mach;
93         const char *iname;
94
95         /*
96          * The root component tells us what machine architecture we have here.
97          */
98         p = ArcGetChild(PROM_NULL_COMPONENT);
99         if (p == NULL) {
100 #ifdef CONFIG_SGI_IP27
101                 /* IP27 PROM misbehaves, seems to not implement ARC
102                    GetChild().  So we just assume it's an IP27.  */
103                 iname = "SGI-IP27";
104 #else
105                 iname = "Unknown";
106 #endif
107         } else
108                 iname = (char *) (long) p->iname;
109
110         printk("ARCH: %s\n", iname);
111         mach = string_to_mach(iname);
112         system_type = mach->liname;
113
114         prom_flags = mach->flags;
115 }