1
2
3
4
5
6
7
8#include <linux/init.h>
9#include <linux/kernel.h>
10#include <linux/mc146818rtc.h>
11#include <linux/export.h>
12#include <linux/string.h>
13#include <linux/types.h>
14
15#include <asm/bootinfo.h>
16
17#include <asm/dec/ioasic.h>
18#include <asm/dec/ioasic_addrs.h>
19#include <asm/dec/kn01.h>
20#include <asm/dec/kn02.h>
21#include <asm/dec/kn02ba.h>
22#include <asm/dec/kn02ca.h>
23#include <asm/dec/kn03.h>
24#include <asm/dec/kn230.h>
25#include <asm/dec/prom.h>
26#include <asm/dec/system.h>
27
28#include "dectypes.h"
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
62
63
64
65volatile u8 *dec_rtc_base;
66
67EXPORT_SYMBOL(dec_rtc_base);
68
69static inline void prom_init_kn01(void)
70{
71 dec_kn_slot_base = KN01_SLOT_BASE;
72 dec_kn_slot_size = KN01_SLOT_SIZE;
73
74 dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN01_RTC);
75}
76
77static inline void prom_init_kn230(void)
78{
79 dec_kn_slot_base = KN01_SLOT_BASE;
80 dec_kn_slot_size = KN01_SLOT_SIZE;
81
82 dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN01_RTC);
83}
84
85static inline void prom_init_kn02(void)
86{
87 dec_kn_slot_base = KN02_SLOT_BASE;
88 dec_kn_slot_size = KN02_SLOT_SIZE;
89 dec_tc_bus = 1;
90
91 dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN02_RTC);
92}
93
94static inline void prom_init_kn02xa(void)
95{
96 dec_kn_slot_base = KN02XA_SLOT_BASE;
97 dec_kn_slot_size = IOASIC_SLOT_SIZE;
98 dec_tc_bus = 1;
99
100 ioasic_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_IOCTL);
101 dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_TOY);
102}
103
104static inline void prom_init_kn03(void)
105{
106 dec_kn_slot_base = KN03_SLOT_BASE;
107 dec_kn_slot_size = IOASIC_SLOT_SIZE;
108 dec_tc_bus = 1;
109
110 ioasic_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_IOCTL);
111 dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_TOY);
112}
113
114
115void __init prom_identify_arch(u32 magic)
116{
117 unsigned char dec_cpunum, dec_firmrev, dec_etc, dec_systype;
118 u32 dec_sysid;
119
120 if (!prom_is_rex(magic)) {
121 dec_sysid = simple_strtoul(prom_getenv("systype"),
122 (char **)0, 0);
123 } else {
124 dec_sysid = rex_getsysid();
125 if (dec_sysid == 0) {
126 printk("Zero sysid returned from PROM! "
127 "Assuming a PMAX-like machine.\n");
128 dec_sysid = 1;
129 }
130 }
131
132 dec_cpunum = (dec_sysid & 0xff000000) >> 24;
133 dec_systype = (dec_sysid & 0xff0000) >> 16;
134 dec_firmrev = (dec_sysid & 0xff00) >> 8;
135 dec_etc = dec_sysid & 0xff;
136
137
138
139
140
141 switch (dec_systype) {
142 case DS2100_3100:
143 mips_machtype = MACH_DS23100;
144 prom_init_kn01();
145 break;
146 case DS5100:
147 mips_machtype = MACH_DS5100;
148 prom_init_kn230();
149 break;
150 case DS5000_200:
151 mips_machtype = MACH_DS5000_200;
152 prom_init_kn02();
153 break;
154 case DS5000_1XX:
155 mips_machtype = MACH_DS5000_1XX;
156 prom_init_kn02xa();
157 break;
158 case DS5000_2X0:
159 mips_machtype = MACH_DS5000_2X0;
160 prom_init_kn03();
161 if (!(ioasic_read(IO_REG_SIR) & KN03_IO_INR_3MAXP))
162 mips_machtype = MACH_DS5900;
163 break;
164 case DS5000_XX:
165 mips_machtype = MACH_DS5000_XX;
166 prom_init_kn02xa();
167 break;
168 case DS5800:
169 mips_machtype = MACH_DS5800;
170 break;
171 case DS5400:
172 mips_machtype = MACH_DS5400;
173 break;
174 case DS5500:
175 mips_machtype = MACH_DS5500;
176 break;
177 default:
178 mips_machtype = MACH_DSUNKNOWN;
179 break;
180 }
181
182 if (mips_machtype == MACH_DSUNKNOWN)
183 printk("This is an %s, id is %x\n",
184 dec_system_strings[mips_machtype], dec_systype);
185 else
186 printk("This is a %s\n", dec_system_strings[mips_machtype]);
187}
188