1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* identify.c: identify machine by looking up system identifier
*
* Copyright (C) 1998 Thomas Bogendoerfer
*
* This code is based on arch/mips/sgi/kernel/system.c, which is
*
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/string.h>
#include <asm/sgialib.h>
#include <asm/bootinfo.h>
struct smatch {
char *arcname;
char *liname;
int type;
int flags;
};
static struct smatch mach_table[] = {
{
.arcname = "SGI-IP22",
.liname = "SGI Indy",
.type = MACH_SGI_IP22,
.flags = PROM_FLAG_ARCS,
}, {
.arcname = "SGI-IP27",
.liname = "SGI Origin",
.type = MACH_SGI_IP27,
.flags = PROM_FLAG_ARCS,
}, {
.arcname = "SGI-IP28",
.liname = "SGI IP28",
.type = MACH_SGI_IP28,
.flags = PROM_FLAG_ARCS,
}, {
.arcname = "SGI-IP30",
.liname = "SGI Octane",
.type = MACH_SGI_IP30,
.flags = PROM_FLAG_ARCS,
}, {
.arcname = "SGI-IP32",
.liname = "SGI O2",
.type = MACH_SGI_IP32,
.flags = PROM_FLAG_ARCS,
}, {
.arcname = "Microsoft-Jazz",
.liname = "Jazz MIPS_Magnum_4000",
.type = MACH_MIPS_MAGNUM_4000,
.flags = 0,
}, {
.arcname = "PICA-61",
.liname = "Jazz Acer_PICA_61",
.type = MACH_ACER_PICA_61,
.flags = 0,
}, {
.arcname = "RM200PCI",
.liname = "SNI RM200_PCI",
.type = MACH_SNI_RM200_PCI,
.flags = PROM_FLAG_DONT_FREE_TEMP,
}
};
int prom_flags;
static struct smatch * __init string_to_mach(const char *s)
{
int i;
for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
if (!strcmp(s, mach_table[i].arcname))
return &mach_table[i];
}
panic("Yeee, could not determine architecture type <%s>", s);
}
char *system_type;
const char *get_system_type(void)
{
return system_type;
}
void __init prom_identify_arch(void)
{
pcomponent *p;
struct smatch *mach;
const char *iname;
/*
* The root component tells us what machine architecture we have here.
*/
p = ArcGetChild(PROM_NULL_COMPONENT);
if (p == NULL) {
#ifdef CONFIG_SGI_IP27
/* IP27 PROM misbehaves, seems to not implement ARC
GetChild(). So we just assume it's an IP27. */
iname = "SGI-IP27";
#else
iname = "Unknown";
#endif
} else
iname = (char *) (long) p->iname;
printk("ARCH: %s\n", iname);
mach = string_to_mach(iname);
system_type = mach->liname;
mips_machtype = mach->type;
prom_flags = mach->flags;
}
|
