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Commit | Line | Data |
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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 | ||
53ae3419 SR |
18 | #include "kernel.h" |
19 | ||
1da177e4 LT |
20 | DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 }; |
21 | ||
22 | struct cpu_iu_info { | |
8a563f01 SR |
23 | int psr_impl; |
24 | int psr_vers; | |
25 | char *cpu_name; /* should be enough I hope... */ | |
1da177e4 LT |
26 | }; |
27 | ||
28 | struct cpu_fp_info { | |
8a563f01 SR |
29 | int psr_impl; |
30 | int fp_vers; | |
31 | char *fp_name; | |
1da177e4 LT |
32 | }; |
33 | ||
34 | /* In order to get the fpu type correct, you need to take the IDPROM's | |
35 | * machine type value into consideration too. I will fix this. | |
36 | */ | |
8a563f01 SR |
37 | #define CPU_FP(psr, ver, name) \ |
38 | { .psr_impl = (psr), .fp_vers = (ver), .fp_name = (name) } | |
c8edc89d | 39 | static struct cpu_fp_info linux_sparc_fpu[] = { |
8a563f01 SR |
40 | CPU_FP(0, 0, "Fujitsu MB86910 or Weitek WTL1164/5"), |
41 | CPU_FP(0, 1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"), | |
42 | CPU_FP(0, 2, "LSI Logic L64802 or Texas Instruments ACT8847"), | |
43 | /* SparcStation SLC, SparcStation1 */ | |
44 | CPU_FP(0, 3, "Weitek WTL3170/2"), | |
45 | /* SPARCstation-5 */ | |
46 | CPU_FP(0, 4, "Lsi Logic/Meiko L64804 or compatible"), | |
47 | CPU_FP(0, 5, "reserved"), | |
48 | CPU_FP(0, 6, "reserved"), | |
49 | CPU_FP(0, 7, "No FPU"), | |
50 | CPU_FP(1, 0, "ROSS HyperSparc combined IU/FPU"), | |
51 | CPU_FP(1, 1, "Lsi Logic L64814"), | |
52 | CPU_FP(1, 2, "Texas Instruments TMS390-C602A"), | |
53 | CPU_FP(1, 3, "Cypress CY7C602 FPU"), | |
54 | CPU_FP(1, 4, "reserved"), | |
55 | CPU_FP(1, 5, "reserved"), | |
56 | CPU_FP(1, 6, "reserved"), | |
57 | CPU_FP(1, 7, "No FPU"), | |
58 | CPU_FP(2, 0, "BIT B5010 or B5110/20 or B5210"), | |
59 | CPU_FP(2, 1, "reserved"), | |
60 | CPU_FP(2, 2, "reserved"), | |
61 | CPU_FP(2, 3, "reserved"), | |
62 | CPU_FP(2, 4, "reserved"), | |
63 | CPU_FP(2, 5, "reserved"), | |
64 | CPU_FP(2, 6, "reserved"), | |
65 | CPU_FP(2, 7, "No FPU"), | |
66 | /* SuperSparc 50 module */ | |
67 | CPU_FP(4, 0, "SuperSparc on-chip FPU"), | |
68 | /* SparcClassic */ | |
69 | CPU_FP(4, 4, "TI MicroSparc on chip FPU"), | |
70 | CPU_FP(5, 0, "Matsushita MN10501"), | |
71 | CPU_FP(5, 1, "reserved"), | |
72 | CPU_FP(5, 2, "reserved"), | |
73 | CPU_FP(5, 3, "reserved"), | |
74 | CPU_FP(5, 4, "reserved"), | |
75 | CPU_FP(5, 5, "reserved"), | |
76 | CPU_FP(5, 6, "reserved"), | |
77 | CPU_FP(5, 7, "No FPU"), | |
78 | CPU_FP(9, 3, "Fujitsu or Weitek on-chip FPU"), | |
1da177e4 LT |
79 | }; |
80 | ||
940fdc6e | 81 | #define NSPARCFPU ARRAY_SIZE(linux_sparc_fpu) |
1da177e4 | 82 | |
8a563f01 SR |
83 | #define CPU_INFO(psr, ver, name) \ |
84 | { .psr_impl = (psr), .psr_vers = (ver), .cpu_name = (name) } | |
c8edc89d | 85 | static struct cpu_iu_info linux_sparc_chips[] = { |
8a563f01 SR |
86 | /* Sun4/100, 4/200, SLC */ |
87 | CPU_INFO(0, 0, "Fujitsu MB86900/1A or LSI L64831 SparcKIT-40"), | |
88 | /* borned STP1012PGA */ | |
89 | CPU_INFO(0, 4, "Fujitsu MB86904"), | |
90 | CPU_INFO(0, 5, "Fujitsu TurboSparc MB86907"), | |
91 | /* SparcStation2, SparcServer 490 & 690 */ | |
92 | CPU_INFO(1, 0, "LSI Logic Corporation - L64811"), | |
93 | /* SparcStation2 */ | |
94 | CPU_INFO(1, 1, "Cypress/ROSS CY7C601"), | |
95 | /* Embedded controller */ | |
96 | CPU_INFO(1, 3, "Cypress/ROSS CY7C611"), | |
97 | /* Ross Technologies HyperSparc */ | |
98 | CPU_INFO(1, 0xf, "ROSS HyperSparc RT620"), | |
99 | CPU_INFO(1, 0xe, "ROSS HyperSparc RT625 or RT626"), | |
100 | /* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */ | |
101 | /* Someone please write the code to support this beast! ;) */ | |
102 | CPU_INFO(2, 0, "Bipolar Integrated Technology - B5010"), | |
103 | CPU_INFO(3, 0, "LSI Logic Corporation - unknown-type"), | |
104 | CPU_INFO(4, 0, "Texas Instruments, Inc. - SuperSparc-(II)"), | |
105 | /* SparcClassic -- borned STP1010TAB-50*/ | |
106 | CPU_INFO(4, 1, "Texas Instruments, Inc. - MicroSparc"), | |
107 | CPU_INFO(4, 2, "Texas Instruments, Inc. - MicroSparc II"), | |
108 | CPU_INFO(4, 3, "Texas Instruments, Inc. - SuperSparc 51"), | |
109 | CPU_INFO(4, 4, "Texas Instruments, Inc. - SuperSparc 61"), | |
110 | CPU_INFO(4, 5, "Texas Instruments, Inc. - unknown"), | |
111 | CPU_INFO(5, 0, "Matsushita - MN10501"), | |
112 | CPU_INFO(6, 0, "Philips Corporation - unknown"), | |
113 | CPU_INFO(7, 0, "Harvest VLSI Design Center, Inc. - unknown"), | |
114 | /* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */ | |
115 | CPU_INFO(8, 0, "Systems and Processes Engineering Corporation (SPEC)"), | |
116 | CPU_INFO(9, 0, "Fujitsu or Weitek Power-UP"), | |
117 | CPU_INFO(9, 1, "Fujitsu or Weitek Power-UP"), | |
118 | CPU_INFO(9, 2, "Fujitsu or Weitek Power-UP"), | |
119 | CPU_INFO(9, 3, "Fujitsu or Weitek Power-UP"), | |
120 | CPU_INFO(0xa, 0, "UNKNOWN CPU-VENDOR/TYPE"), | |
121 | CPU_INFO(0xb, 0, "UNKNOWN CPU-VENDOR/TYPE"), | |
122 | CPU_INFO(0xc, 0, "UNKNOWN CPU-VENDOR/TYPE"), | |
123 | CPU_INFO(0xd, 0, "UNKNOWN CPU-VENDOR/TYPE"), | |
124 | CPU_INFO(0xe, 0, "UNKNOWN CPU-VENDOR/TYPE"), | |
125 | CPU_INFO(0xf, 0, "UNKNOWN CPU-VENDOR/TYPE"), | |
1da177e4 LT |
126 | }; |
127 | ||
940fdc6e | 128 | #define NSPARCCHIPS ARRAY_SIZE(linux_sparc_chips) |
1da177e4 | 129 | |
53ae3419 SR |
130 | const char *sparc_cpu_type; |
131 | const char *sparc_fpu_type; | |
1da177e4 LT |
132 | |
133 | unsigned int fsr_storage; | |
134 | ||
409832f5 | 135 | void __cpuinit cpu_probe(void) |
1da177e4 LT |
136 | { |
137 | int psr_impl, psr_vers, fpu_vers; | |
138 | int i, psr; | |
139 | ||
8a563f01 SR |
140 | psr_impl = ((get_psr() >> 28) & 0xf); |
141 | psr_vers = ((get_psr() >> 24) & 0xf); | |
1da177e4 LT |
142 | |
143 | psr = get_psr(); | |
144 | put_psr(psr | PSR_EF); | |
8a563f01 | 145 | fpu_vers = ((get_fsr() >> 17) & 0x7); |
1da177e4 LT |
146 | put_psr(psr); |
147 | ||
8a563f01 SR |
148 | for (i = 0; i < NSPARCCHIPS; i++) { |
149 | if (linux_sparc_chips[i].psr_impl == psr_impl) | |
150 | if (linux_sparc_chips[i].psr_vers == psr_vers) { | |
1da177e4 LT |
151 | sparc_cpu_type = linux_sparc_chips[i].cpu_name; |
152 | break; | |
153 | } | |
154 | } | |
155 | ||
8a563f01 | 156 | if (i == NSPARCCHIPS) |
6c6bd8b6 SR |
157 | { |
158 | printk(KERN_ERR "CPU: Unknown chip, impl[0x%x] vers[0x%x]\n", | |
8a563f01 | 159 | psr_impl, psr_vers); |
6c6bd8b6 SR |
160 | sparc_cpu_type = "Unknown CPU"; |
161 | } | |
1da177e4 | 162 | |
8a563f01 SR |
163 | for (i = 0; i < NSPARCFPU; i++) { |
164 | if (linux_sparc_fpu[i].psr_impl == psr_impl) | |
165 | if (linux_sparc_fpu[i].fp_vers == fpu_vers) { | |
1da177e4 LT |
166 | sparc_fpu_type = linux_sparc_fpu[i].fp_name; |
167 | break; | |
168 | } | |
169 | } | |
170 | ||
8a563f01 | 171 | if (i == NSPARCFPU) { |
6c6bd8b6 | 172 | printk(KERN_ERR "FPU: Unknown chip, impl[0x%x] vers[0x%x]\n", |
8a563f01 | 173 | psr_impl, fpu_vers); |
6c6bd8b6 | 174 | sparc_fpu_type = "Unknown FPU"; |
1da177e4 LT |
175 | } |
176 | } |