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gerrit-public.fairphone.software / kernel / msm-4.9 / 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 / . / arch / mips / dec / prom / identify.c
blob: 9380588cb15c949e1a733073cc0c97d9ed6f180d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame^]1/*
2 * identify.c: machine identification code.
3 *
4 * Copyright (C) 1998 Harald Koerfgen and Paul M. Antoine
5 * Copyright (C) 2002, 2003, 2004 Maciej W. Rozycki
6 */
7#include <linux/init.h>
8#include <linux/kernel.h>
9#include <linux/mc146818rtc.h>
10#include <linux/module.h>
11#include <linux/string.h>
12#include <linux/types.h>
13
14#include <asm/bootinfo.h>
15#include <asm/dec/ioasic.h>
16#include <asm/dec/ioasic_addrs.h>
17#include <asm/dec/kn01.h>
18#include <asm/dec/kn02.h>
19#include <asm/dec/kn02ba.h>
20#include <asm/dec/kn02ca.h>
21#include <asm/dec/kn03.h>
22#include <asm/dec/kn230.h>
23#include <asm/dec/prom.h>
24
25#include "dectypes.h"
26
27extern unsigned long mips_machgroup;
28extern unsigned long mips_machtype;
29
30static const char *dec_system_strings[] = {
31 [MACH_DSUNKNOWN] "unknown DECstation",
32 [MACH_DS23100] "DECstation 2100/3100",
33 [MACH_DS5100] "DECsystem 5100",
34 [MACH_DS5000_200] "DECstation 5000/200",
35 [MACH_DS5000_1XX] "DECstation 5000/1xx",
36 [MACH_DS5000_XX] "Personal DECstation 5000/xx",
37 [MACH_DS5000_2X0] "DECstation 5000/2x0",
38 [MACH_DS5400] "DECsystem 5400",
39 [MACH_DS5500] "DECsystem 5500",
40 [MACH_DS5800] "DECsystem 5800",
41 [MACH_DS5900] "DECsystem 5900",
42};
43
44const char *get_system_type(void)
45{
46#define STR_BUF_LEN 64
47 static char system[STR_BUF_LEN];
48 static int called = 0;
49
50 if (called == 0) {
51 called = 1;
52 snprintf(system, STR_BUF_LEN, "Digital %s",
53 dec_system_strings[mips_machtype]);
54 }
55
56 return system;
57}
58
59
60/*
61 * Setup essential system-specific memory addresses. We need them
62 * early. Semantically the functions belong to prom/init.c, but they
63 * are compact enough we want them inlined. --macro
64 */
65volatile u8 *dec_rtc_base;
66
67EXPORT_SYMBOL(dec_rtc_base);
68
69static inline void prom_init_kn01(void)
70{
71 dec_rtc_base = (void *)KN01_RTC_BASE;
72 dec_kn_slot_size = KN01_SLOT_SIZE;
73}
74
75static inline void prom_init_kn230(void)
76{
77 dec_rtc_base = (void *)KN01_RTC_BASE;
78 dec_kn_slot_size = KN01_SLOT_SIZE;
79}
80
81static inline void prom_init_kn02(void)
82{
83 dec_rtc_base = (void *)KN02_RTC_BASE;
84 dec_kn_slot_size = KN02_SLOT_SIZE;
85}
86
87static inline void prom_init_kn02xa(void)
88{
89 ioasic_base = (void *)KN02XA_IOASIC_BASE;
90 dec_rtc_base = (void *)KN02XA_RTC_BASE;
91 dec_kn_slot_size = IOASIC_SLOT_SIZE;
92}
93
94static inline void prom_init_kn03(void)
95{
96 ioasic_base = (void *)KN03_IOASIC_BASE;
97 dec_rtc_base = (void *)KN03_RTC_BASE;
98 dec_kn_slot_size = IOASIC_SLOT_SIZE;
99}
100
101
102void __init prom_identify_arch(u32 magic)
103{
104 unsigned char dec_cpunum, dec_firmrev, dec_etc, dec_systype;
105 u32 dec_sysid;
106
107 if (!prom_is_rex(magic)) {
108 dec_sysid = simple_strtoul(prom_getenv("systype"),
109 (char **)0, 0);
110 } else {
111 dec_sysid = rex_getsysid();
112 if (dec_sysid == 0) {
113 printk("Zero sysid returned from PROM! "
114 "Assuming a PMAX-like machine.\n");
115 dec_sysid = 1;
116 }
117 }
118
119 dec_cpunum = (dec_sysid & 0xff000000) >> 24;
120 dec_systype = (dec_sysid & 0xff0000) >> 16;
121 dec_firmrev = (dec_sysid & 0xff00) >> 8;
122 dec_etc = dec_sysid & 0xff;
123
124 /* We're obviously one of the DEC machines */
125 mips_machgroup = MACH_GROUP_DEC;
126
127 /*
128 * FIXME: This may not be an exhaustive list of DECStations/Servers!
129 * Put all model-specific initialisation calls here.
130 */
131 switch (dec_systype) {
132 case DS2100_3100:
133 mips_machtype = MACH_DS23100;
134 prom_init_kn01();
135 break;
136 case DS5100: /* DS5100 MIPSMATE */
137 mips_machtype = MACH_DS5100;
138 prom_init_kn230();
139 break;
140 case DS5000_200: /* DS5000 3max */
141 mips_machtype = MACH_DS5000_200;
142 prom_init_kn02();
143 break;
144 case DS5000_1XX: /* DS5000/100 3min */
145 mips_machtype = MACH_DS5000_1XX;
146 prom_init_kn02xa();
147 break;
148 case DS5000_2X0: /* DS5000/240 3max+ or DS5900 bigmax */
149 mips_machtype = MACH_DS5000_2X0;
150 prom_init_kn03();
151 if (!(ioasic_read(IO_REG_SIR) & KN03_IO_INR_3MAXP))
152 mips_machtype = MACH_DS5900;
153 break;
154 case DS5000_XX: /* Personal DS5000/xx maxine */
155 mips_machtype = MACH_DS5000_XX;
156 prom_init_kn02xa();
157 break;
158 case DS5800: /* DS5800 Isis */
159 mips_machtype = MACH_DS5800;
160 break;
161 case DS5400: /* DS5400 MIPSfair */
162 mips_machtype = MACH_DS5400;
163 break;
164 case DS5500: /* DS5500 MIPSfair-2 */
165 mips_machtype = MACH_DS5500;
166 break;
167 default:
168 mips_machtype = MACH_DSUNKNOWN;
169 break;
170 }
171
172 if (mips_machtype == MACH_DSUNKNOWN)
173 printk("This is an %s, id is %x\n",
174 dec_system_strings[mips_machtype], dec_systype);
175 else
176 printk("This is a %s\n", dec_system_strings[mips_machtype]);
177}