]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* cpu.c: Dinky routines to look for the kind of Sparc cpu |
2 | * we are on. | |
3 | * | |
4 | * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) | |
5 | */ | |
6 | ||
1da177e4 LT |
7 | #include <linux/kernel.h> |
8 | #include <linux/init.h> | |
9 | #include <linux/smp.h> | |
10 | #include <linux/threads.h> | |
11 | #include <asm/oplib.h> | |
12 | #include <asm/page.h> | |
13 | #include <asm/head.h> | |
14 | #include <asm/psr.h> | |
15 | #include <asm/mbus.h> | |
16 | #include <asm/cpudata.h> | |
17 | ||
18 | DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 }; | |
19 | ||
20 | struct cpu_iu_info { | |
21 | int psr_impl; | |
22 | int psr_vers; | |
23 | char* cpu_name; /* should be enough I hope... */ | |
24 | }; | |
25 | ||
26 | struct cpu_fp_info { | |
27 | int psr_impl; | |
28 | int fp_vers; | |
29 | char* fp_name; | |
30 | }; | |
31 | ||
32 | /* In order to get the fpu type correct, you need to take the IDPROM's | |
33 | * machine type value into consideration too. I will fix this. | |
34 | */ | |
c8edc89d | 35 | static struct cpu_fp_info linux_sparc_fpu[] = { |
1da177e4 LT |
36 | { 0, 0, "Fujitsu MB86910 or Weitek WTL1164/5"}, |
37 | { 0, 1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"}, | |
38 | { 0, 2, "LSI Logic L64802 or Texas Instruments ACT8847"}, | |
39 | /* SparcStation SLC, SparcStation1 */ | |
40 | { 0, 3, "Weitek WTL3170/2"}, | |
41 | /* SPARCstation-5 */ | |
42 | { 0, 4, "Lsi Logic/Meiko L64804 or compatible"}, | |
43 | { 0, 5, "reserved"}, | |
44 | { 0, 6, "reserved"}, | |
45 | { 0, 7, "No FPU"}, | |
46 | { 1, 0, "ROSS HyperSparc combined IU/FPU"}, | |
47 | { 1, 1, "Lsi Logic L64814"}, | |
48 | { 1, 2, "Texas Instruments TMS390-C602A"}, | |
49 | { 1, 3, "Cypress CY7C602 FPU"}, | |
50 | { 1, 4, "reserved"}, | |
51 | { 1, 5, "reserved"}, | |
52 | { 1, 6, "reserved"}, | |
53 | { 1, 7, "No FPU"}, | |
54 | { 2, 0, "BIT B5010 or B5110/20 or B5210"}, | |
55 | { 2, 1, "reserved"}, | |
56 | { 2, 2, "reserved"}, | |
57 | { 2, 3, "reserved"}, | |
58 | { 2, 4, "reserved"}, | |
59 | { 2, 5, "reserved"}, | |
60 | { 2, 6, "reserved"}, | |
61 | { 2, 7, "No FPU"}, | |
62 | /* SuperSparc 50 module */ | |
63 | { 4, 0, "SuperSparc on-chip FPU"}, | |
64 | /* SparcClassic */ | |
65 | { 4, 4, "TI MicroSparc on chip FPU"}, | |
66 | { 5, 0, "Matsushita MN10501"}, | |
67 | { 5, 1, "reserved"}, | |
68 | { 5, 2, "reserved"}, | |
69 | { 5, 3, "reserved"}, | |
70 | { 5, 4, "reserved"}, | |
71 | { 5, 5, "reserved"}, | |
72 | { 5, 6, "reserved"}, | |
73 | { 5, 7, "No FPU"}, | |
74 | { 9, 3, "Fujitsu or Weitek on-chip FPU"}, | |
75 | }; | |
76 | ||
940fdc6e | 77 | #define NSPARCFPU ARRAY_SIZE(linux_sparc_fpu) |
1da177e4 | 78 | |
c8edc89d | 79 | static struct cpu_iu_info linux_sparc_chips[] = { |
1da177e4 LT |
80 | /* Sun4/100, 4/200, SLC */ |
81 | { 0, 0, "Fujitsu MB86900/1A or LSI L64831 SparcKIT-40"}, | |
82 | /* borned STP1012PGA */ | |
83 | { 0, 4, "Fujitsu MB86904"}, | |
84 | { 0, 5, "Fujitsu TurboSparc MB86907"}, | |
85 | /* SparcStation2, SparcServer 490 & 690 */ | |
86 | { 1, 0, "LSI Logic Corporation - L64811"}, | |
87 | /* SparcStation2 */ | |
88 | { 1, 1, "Cypress/ROSS CY7C601"}, | |
89 | /* Embedded controller */ | |
90 | { 1, 3, "Cypress/ROSS CY7C611"}, | |
91 | /* Ross Technologies HyperSparc */ | |
92 | { 1, 0xf, "ROSS HyperSparc RT620"}, | |
93 | { 1, 0xe, "ROSS HyperSparc RT625 or RT626"}, | |
94 | /* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */ | |
95 | /* Someone please write the code to support this beast! ;) */ | |
96 | { 2, 0, "Bipolar Integrated Technology - B5010"}, | |
97 | { 3, 0, "LSI Logic Corporation - unknown-type"}, | |
98 | { 4, 0, "Texas Instruments, Inc. - SuperSparc-(II)"}, | |
99 | /* SparcClassic -- borned STP1010TAB-50*/ | |
100 | { 4, 1, "Texas Instruments, Inc. - MicroSparc"}, | |
101 | { 4, 2, "Texas Instruments, Inc. - MicroSparc II"}, | |
102 | { 4, 3, "Texas Instruments, Inc. - SuperSparc 51"}, | |
103 | { 4, 4, "Texas Instruments, Inc. - SuperSparc 61"}, | |
104 | { 4, 5, "Texas Instruments, Inc. - unknown"}, | |
105 | { 5, 0, "Matsushita - MN10501"}, | |
106 | { 6, 0, "Philips Corporation - unknown"}, | |
107 | { 7, 0, "Harvest VLSI Design Center, Inc. - unknown"}, | |
108 | /* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */ | |
109 | { 8, 0, "Systems and Processes Engineering Corporation (SPEC)"}, | |
110 | { 9, 0, "Fujitsu or Weitek Power-UP"}, | |
111 | { 9, 1, "Fujitsu or Weitek Power-UP"}, | |
112 | { 9, 2, "Fujitsu or Weitek Power-UP"}, | |
113 | { 9, 3, "Fujitsu or Weitek Power-UP"}, | |
114 | { 0xa, 0, "UNKNOWN CPU-VENDOR/TYPE"}, | |
115 | { 0xb, 0, "UNKNOWN CPU-VENDOR/TYPE"}, | |
116 | { 0xc, 0, "UNKNOWN CPU-VENDOR/TYPE"}, | |
117 | { 0xd, 0, "UNKNOWN CPU-VENDOR/TYPE"}, | |
118 | { 0xe, 0, "UNKNOWN CPU-VENDOR/TYPE"}, | |
119 | { 0xf, 0, "UNKNOWN CPU-VENDOR/TYPE"}, | |
120 | }; | |
121 | ||
940fdc6e | 122 | #define NSPARCCHIPS ARRAY_SIZE(linux_sparc_chips) |
1da177e4 LT |
123 | |
124 | char *sparc_cpu_type; | |
125 | char *sparc_fpu_type; | |
126 | ||
127 | unsigned int fsr_storage; | |
128 | ||
129 | void __init cpu_probe(void) | |
130 | { | |
131 | int psr_impl, psr_vers, fpu_vers; | |
132 | int i, psr; | |
133 | ||
134 | psr_impl = ((get_psr()>>28)&0xf); | |
135 | psr_vers = ((get_psr()>>24)&0xf); | |
136 | ||
137 | psr = get_psr(); | |
138 | put_psr(psr | PSR_EF); | |
139 | fpu_vers = ((get_fsr()>>17)&0x7); | |
140 | put_psr(psr); | |
141 | ||
142 | for(i = 0; i<NSPARCCHIPS; i++) { | |
143 | if(linux_sparc_chips[i].psr_impl == psr_impl) | |
144 | if(linux_sparc_chips[i].psr_vers == psr_vers) { | |
145 | sparc_cpu_type = linux_sparc_chips[i].cpu_name; | |
146 | break; | |
147 | } | |
148 | } | |
149 | ||
150 | if(i==NSPARCCHIPS) | |
151 | printk("DEBUG: psr.impl = 0x%x psr.vers = 0x%x\n", psr_impl, | |
152 | psr_vers); | |
153 | ||
154 | for(i = 0; i<NSPARCFPU; i++) { | |
155 | if(linux_sparc_fpu[i].psr_impl == psr_impl) | |
156 | if(linux_sparc_fpu[i].fp_vers == fpu_vers) { | |
157 | sparc_fpu_type = linux_sparc_fpu[i].fp_name; | |
158 | break; | |
159 | } | |
160 | } | |
161 | ||
162 | if(i == NSPARCFPU) { | |
163 | printk("DEBUG: psr.impl = 0x%x fsr.vers = 0x%x\n", psr_impl, | |
164 | fpu_vers); | |
165 | sparc_fpu_type = linux_sparc_fpu[31].fp_name; | |
166 | } | |
167 | } |