1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public
3*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive
4*4882a593Smuzhiyun * for more details.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * identify.c: identify machine by looking up system identifier
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * Copyright (C) 1998 Thomas Bogendoerfer
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun * This code is based on arch/mips/sgi/kernel/system.c, which is
11*4882a593Smuzhiyun *
12*4882a593Smuzhiyun * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
13*4882a593Smuzhiyun */
14*4882a593Smuzhiyun #include <linux/bug.h>
15*4882a593Smuzhiyun #include <linux/init.h>
16*4882a593Smuzhiyun #include <linux/kernel.h>
17*4882a593Smuzhiyun #include <linux/types.h>
18*4882a593Smuzhiyun #include <linux/string.h>
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun #include <asm/sgialib.h>
21*4882a593Smuzhiyun #include <asm/bootinfo.h>
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun struct smatch {
24*4882a593Smuzhiyun char *arcname;
25*4882a593Smuzhiyun char *liname;
26*4882a593Smuzhiyun int flags;
27*4882a593Smuzhiyun };
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun static struct smatch mach_table[] = {
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun .arcname = "SGI-IP22",
32*4882a593Smuzhiyun .liname = "SGI Indy",
33*4882a593Smuzhiyun .flags = PROM_FLAG_ARCS,
34*4882a593Smuzhiyun }, {
35*4882a593Smuzhiyun .arcname = "SGI-IP28",
36*4882a593Smuzhiyun .liname = "SGI IP28",
37*4882a593Smuzhiyun .flags = PROM_FLAG_ARCS,
38*4882a593Smuzhiyun }, {
39*4882a593Smuzhiyun .arcname = "SGI-IP30",
40*4882a593Smuzhiyun .liname = "SGI Octane",
41*4882a593Smuzhiyun .flags = PROM_FLAG_ARCS,
42*4882a593Smuzhiyun }, {
43*4882a593Smuzhiyun .arcname = "SGI-IP32",
44*4882a593Smuzhiyun .liname = "SGI O2",
45*4882a593Smuzhiyun .flags = PROM_FLAG_ARCS,
46*4882a593Smuzhiyun }, {
47*4882a593Smuzhiyun .arcname = "Microsoft-Jazz",
48*4882a593Smuzhiyun .liname = "Jazz MIPS_Magnum_4000",
49*4882a593Smuzhiyun .flags = 0,
50*4882a593Smuzhiyun }, {
51*4882a593Smuzhiyun .arcname = "PICA-61",
52*4882a593Smuzhiyun .liname = "Jazz Acer_PICA_61",
53*4882a593Smuzhiyun .flags = 0,
54*4882a593Smuzhiyun }, {
55*4882a593Smuzhiyun .arcname = "RM200PCI",
56*4882a593Smuzhiyun .liname = "SNI RM200_PCI",
57*4882a593Smuzhiyun .flags = PROM_FLAG_DONT_FREE_TEMP,
58*4882a593Smuzhiyun }, {
59*4882a593Smuzhiyun .arcname = "RM200PCI-R5K",
60*4882a593Smuzhiyun .liname = "SNI RM200_PCI-R5K",
61*4882a593Smuzhiyun .flags = PROM_FLAG_DONT_FREE_TEMP,
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun };
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun int prom_flags;
66*4882a593Smuzhiyun
string_to_mach(const char * s)67*4882a593Smuzhiyun static struct smatch * __init string_to_mach(const char *s)
68*4882a593Smuzhiyun {
69*4882a593Smuzhiyun int i;
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
72*4882a593Smuzhiyun if (!strcmp(s, mach_table[i].arcname))
73*4882a593Smuzhiyun return &mach_table[i];
74*4882a593Smuzhiyun }
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun panic("Yeee, could not determine architecture type <%s>", s);
77*4882a593Smuzhiyun }
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun char *system_type;
80*4882a593Smuzhiyun
get_system_type(void)81*4882a593Smuzhiyun const char *get_system_type(void)
82*4882a593Smuzhiyun {
83*4882a593Smuzhiyun return system_type;
84*4882a593Smuzhiyun }
85*4882a593Smuzhiyun
ArcGetChild(pcomponent * Current)86*4882a593Smuzhiyun static pcomponent * __init ArcGetChild(pcomponent *Current)
87*4882a593Smuzhiyun {
88*4882a593Smuzhiyun return (pcomponent *) ARC_CALL1(child_component, Current);
89*4882a593Smuzhiyun }
90*4882a593Smuzhiyun
prom_identify_arch(void)91*4882a593Smuzhiyun void __init prom_identify_arch(void)
92*4882a593Smuzhiyun {
93*4882a593Smuzhiyun pcomponent *p;
94*4882a593Smuzhiyun struct smatch *mach;
95*4882a593Smuzhiyun const char *iname;
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun /*
98*4882a593Smuzhiyun * The root component tells us what machine architecture we have here.
99*4882a593Smuzhiyun */
100*4882a593Smuzhiyun p = ArcGetChild(PROM_NULL_COMPONENT);
101*4882a593Smuzhiyun if (p == NULL) {
102*4882a593Smuzhiyun iname = "Unknown";
103*4882a593Smuzhiyun } else
104*4882a593Smuzhiyun iname = (char *) (long) p->iname;
105*4882a593Smuzhiyun
106*4882a593Smuzhiyun printk("ARCH: %s\n", iname);
107*4882a593Smuzhiyun mach = string_to_mach(iname);
108*4882a593Smuzhiyun system_type = mach->liname;
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun prom_flags = mach->flags;
111*4882a593Smuzhiyun }
112