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1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup ia32 |
29 | /** @addtogroup ia32 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <arch/cpu.h> |
35 | #include <arch/cpu.h> |
36 | #include <arch/cpuid.h> |
36 | #include <arch/cpuid.h> |
37 | #include <arch/pm.h> |
37 | #include <arch/pm.h> |
38 | 38 | ||
39 | #include <arch.h> |
39 | #include <arch.h> |
40 | #include <arch/types.h> |
40 | #include <arch/types.h> |
41 | #include <print.h> |
41 | #include <print.h> |
42 | #include <fpu_context.h> |
42 | #include <fpu_context.h> |
43 | 43 | ||
44 | #include <arch/smp/apic.h> |
44 | #include <arch/smp/apic.h> |
- | 45 | #include <arch/syscall.h> |
|
45 | 46 | ||
46 | /* |
47 | /* |
47 | * Identification of CPUs. |
48 | * Identification of CPUs. |
48 | * Contains only non-MP-Specification specific SMP code. |
49 | * Contains only non-MP-Specification specific SMP code. |
49 | */ |
50 | */ |
50 | #define AMD_CPUID_EBX 0x68747541 |
51 | #define AMD_CPUID_EBX 0x68747541 |
51 | #define AMD_CPUID_ECX 0x444d4163 |
52 | #define AMD_CPUID_ECX 0x444d4163 |
52 | #define AMD_CPUID_EDX 0x69746e65 |
53 | #define AMD_CPUID_EDX 0x69746e65 |
53 | 54 | ||
54 | #define INTEL_CPUID_EBX 0x756e6547 |
55 | #define INTEL_CPUID_EBX 0x756e6547 |
55 | #define INTEL_CPUID_ECX 0x6c65746e |
56 | #define INTEL_CPUID_ECX 0x6c65746e |
56 | #define INTEL_CPUID_EDX 0x49656e69 |
57 | #define INTEL_CPUID_EDX 0x49656e69 |
57 | 58 | ||
58 | 59 | ||
59 | enum vendor { |
60 | enum vendor { |
60 | VendorUnknown=0, |
61 | VendorUnknown=0, |
61 | VendorAMD, |
62 | VendorAMD, |
62 | VendorIntel |
63 | VendorIntel |
63 | }; |
64 | }; |
64 | 65 | ||
65 | static char *vendor_str[] = { |
66 | static char *vendor_str[] = { |
66 | "Unknown Vendor", |
67 | "Unknown Vendor", |
67 | "AuthenticAMD", |
68 | "AuthenticAMD", |
68 | "GenuineIntel" |
69 | "GenuineIntel" |
69 | }; |
70 | }; |
70 | 71 | ||
71 | void fpu_disable(void) |
72 | void fpu_disable(void) |
72 | { |
73 | { |
73 | asm volatile ( |
74 | asm volatile ( |
74 | "mov %%cr0,%%eax;" |
75 | "mov %%cr0,%%eax;" |
75 | "or $8,%%eax;" |
76 | "or $8,%%eax;" |
76 | "mov %%eax,%%cr0;" |
77 | "mov %%eax,%%cr0;" |
77 | : |
78 | : |
78 | : |
79 | : |
79 | :"%eax" |
80 | :"%eax" |
80 | ); |
81 | ); |
81 | } |
82 | } |
82 | 83 | ||
83 | void fpu_enable(void) |
84 | void fpu_enable(void) |
84 | { |
85 | { |
85 | asm volatile ( |
86 | asm volatile ( |
86 | "mov %%cr0,%%eax;" |
87 | "mov %%cr0,%%eax;" |
87 | "and $0xffFFffF7,%%eax;" |
88 | "and $0xffFFffF7,%%eax;" |
88 | "mov %%eax,%%cr0;" |
89 | "mov %%eax,%%cr0;" |
89 | : |
90 | : |
90 | : |
91 | : |
91 | :"%eax" |
92 | :"%eax" |
92 | ); |
93 | ); |
93 | } |
94 | } |
94 | 95 | ||
95 | void cpu_arch_init(void) |
96 | void cpu_arch_init(void) |
96 | { |
97 | { |
97 | cpuid_feature_info fi; |
98 | cpuid_feature_info fi; |
98 | cpuid_extended_feature_info efi; |
99 | cpuid_extended_feature_info efi; |
99 | cpu_info_t info; |
100 | cpu_info_t info; |
100 | uint32_t help = 0; |
101 | uint32_t help = 0; |
101 | 102 | ||
102 | CPU->arch.tss = tss_p; |
103 | CPU->arch.tss = tss_p; |
103 | CPU->arch.tss->iomap_base = &CPU->arch.tss->iomap[0] - ((uint8_t *) CPU->arch.tss); |
104 | CPU->arch.tss->iomap_base = &CPU->arch.tss->iomap[0] - ((uint8_t *) CPU->arch.tss); |
104 | 105 | ||
105 | CPU->fpu_owner = NULL; |
106 | CPU->fpu_owner = NULL; |
106 | 107 | ||
107 | cpuid(1, &info); |
108 | cpuid(1, &info); |
108 | 109 | ||
109 | fi.word = info.cpuid_edx; |
110 | fi.word = info.cpuid_edx; |
110 | efi.word = info.cpuid_ecx; |
111 | efi.word = info.cpuid_ecx; |
111 | 112 | ||
112 | if (fi.bits.fxsr) |
113 | if (fi.bits.fxsr) |
113 | fpu_fxsr(); |
114 | fpu_fxsr(); |
114 | else |
115 | else |
115 | fpu_fsr(); |
116 | fpu_fsr(); |
116 | 117 | ||
117 | if (fi.bits.sse) { |
118 | if (fi.bits.sse) { |
118 | asm volatile ( |
119 | asm volatile ( |
119 | "mov %%cr4,%0\n" |
120 | "mov %%cr4,%0\n" |
120 | "or %1,%0\n" |
121 | "or %1,%0\n" |
121 | "mov %0,%%cr4\n" |
122 | "mov %0,%%cr4\n" |
122 | : "+r" (help) |
123 | : "+r" (help) |
123 | : "i" (CR4_OSFXSR_MASK|(1<<10)) |
124 | : "i" (CR4_OSFXSR_MASK|(1<<10)) |
124 | ); |
125 | ); |
125 | } |
126 | } |
- | 127 | ||
- | 128 | /* Setup fast SYSENTER/SYSEXIT syscalls */ |
|
- | 129 | syscall_setup_cpu(); |
|
126 | } |
130 | } |
127 | 131 | ||
128 | void cpu_identify(void) |
132 | void cpu_identify(void) |
129 | { |
133 | { |
130 | cpu_info_t info; |
134 | cpu_info_t info; |
131 | 135 | ||
132 | CPU->arch.vendor = VendorUnknown; |
136 | CPU->arch.vendor = VendorUnknown; |
133 | if (has_cpuid()) { |
137 | if (has_cpuid()) { |
134 | cpuid(0, &info); |
138 | cpuid(0, &info); |
135 | 139 | ||
136 | /* |
140 | /* |
137 | * Check for AMD processor. |
141 | * Check for AMD processor. |
138 | */ |
142 | */ |
139 | if (info.cpuid_ebx==AMD_CPUID_EBX && info.cpuid_ecx==AMD_CPUID_ECX && info.cpuid_edx==AMD_CPUID_EDX) { |
143 | if (info.cpuid_ebx==AMD_CPUID_EBX && info.cpuid_ecx==AMD_CPUID_ECX && info.cpuid_edx==AMD_CPUID_EDX) { |
140 | CPU->arch.vendor = VendorAMD; |
144 | CPU->arch.vendor = VendorAMD; |
141 | } |
145 | } |
142 | 146 | ||
143 | /* |
147 | /* |
144 | * Check for Intel processor. |
148 | * Check for Intel processor. |
145 | */ |
149 | */ |
146 | if (info.cpuid_ebx==INTEL_CPUID_EBX && info.cpuid_ecx==INTEL_CPUID_ECX && info.cpuid_edx==INTEL_CPUID_EDX) { |
150 | if (info.cpuid_ebx==INTEL_CPUID_EBX && info.cpuid_ecx==INTEL_CPUID_ECX && info.cpuid_edx==INTEL_CPUID_EDX) { |
147 | CPU->arch.vendor = VendorIntel; |
151 | CPU->arch.vendor = VendorIntel; |
148 | } |
152 | } |
149 | 153 | ||
150 | cpuid(1, &info); |
154 | cpuid(1, &info); |
151 | CPU->arch.family = (info.cpuid_eax>>8)&0xf; |
155 | CPU->arch.family = (info.cpuid_eax>>8)&0xf; |
152 | CPU->arch.model = (info.cpuid_eax>>4)&0xf; |
156 | CPU->arch.model = (info.cpuid_eax>>4)&0xf; |
153 | CPU->arch.stepping = (info.cpuid_eax>>0)&0xf; |
157 | CPU->arch.stepping = (info.cpuid_eax>>0)&0xf; |
154 | } |
158 | } |
155 | } |
159 | } |
156 | 160 | ||
157 | void cpu_print_report(cpu_t* m) |
161 | void cpu_print_report(cpu_t* m) |
158 | { |
162 | { |
159 | printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n", |
163 | printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n", |
160 | m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping, |
164 | m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping, |
161 | m->frequency_mhz); |
165 | m->frequency_mhz); |
162 | } |
166 | } |
163 | 167 | ||
164 | /** @} |
168 | /** @} |
165 | */ |
169 | */ |
166 | 170 |