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| Rev | Author | Line No. | Line |
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| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #include <arch/cpu.h> |
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| 30 | #include <arch/cpuid.h> |
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| 31 | #include <arch/pm.h> |
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| 32 | |||
| 33 | #include <arch.h> |
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| 34 | #include <arch/types.h> |
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| 35 | #include <print.h> |
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| 36 | #include <typedefs.h> |
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| 37 | |||
| 16 | jermar | 38 | #include <arch/smp/apic.h> |
| 39 | |||
| 1 | jermar | 40 | /* |
| 41 | * Identification of CPUs. |
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| 42 | * Contains only non-MP-Specification specific SMP code. |
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| 43 | */ |
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| 44 | #define AMD_CPUID_EBX 0x68747541 |
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| 45 | #define AMD_CPUID_ECX 0x444d4163 |
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| 46 | #define AMD_CPUID_EDX 0x69746e65 |
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| 47 | |||
| 48 | #define INTEL_CPUID_EBX 0x756e6547 |
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| 49 | #define INTEL_CPUID_ECX 0x6c65746e |
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| 50 | #define INTEL_CPUID_EDX 0x49656e69 |
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| 51 | |||
| 141 | vana | 52 | |
| 1 | jermar | 53 | enum vendor { |
| 54 | VendorUnknown=0, |
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| 55 | VendorAMD, |
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| 56 | VendorIntel |
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| 57 | }; |
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| 58 | |||
| 59 | static char *vendor_str[] = { |
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| 60 | "Unknown Vendor", |
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| 61 | "AuthenticAMD", |
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| 62 | "GenuineIntel" |
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| 63 | }; |
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| 64 | |||
| 309 | palkovsky | 65 | void fpu_disable(void) |
| 58 | vana | 66 | { |
| 309 | palkovsky | 67 | __asm__ volatile ( |
| 58 | vana | 68 | "mov %%cr0,%%eax;" |
| 69 | "or $8,%%eax;" |
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| 70 | "mov %%eax,%%cr0;" |
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| 71 | : |
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| 72 | : |
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| 73 | :"%eax" |
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| 74 | ); |
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| 75 | } |
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| 76 | |||
| 309 | palkovsky | 77 | void fpu_enable(void) |
| 58 | vana | 78 | { |
| 309 | palkovsky | 79 | __asm__ volatile ( |
| 58 | vana | 80 | "mov %%cr0,%%eax;" |
| 81 | "and $0xffFFffF7,%%eax;" |
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| 82 | "mov %%eax,%%cr0;" |
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| 83 | : |
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| 84 | : |
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| 85 | :"%eax" |
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| 86 | ); |
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| 87 | } |
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| 88 | |||
| 89 | |||
| 90 | |||
| 141 | vana | 91 | |
| 1 | jermar | 92 | void cpu_arch_init(void) |
| 93 | { |
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| 15 | jermar | 94 | CPU->arch.tss = tss_p; |
| 75 | vana | 95 | CPU->fpu_owner=NULL; |
| 1 | jermar | 96 | } |
| 97 | |||
| 98 | |||
| 99 | void cpu_identify(void) |
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| 100 | { |
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| 101 | cpu_info_t info; |
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| 102 | int i; |
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| 103 | |||
| 15 | jermar | 104 | CPU->arch.vendor = VendorUnknown; |
| 1 | jermar | 105 | if (has_cpuid()) { |
| 106 | cpuid(0, &info); |
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| 107 | |||
| 108 | /* |
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| 109 | * Check for AMD processor. |
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| 110 | */ |
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| 125 | jermar | 111 | if (info.cpuid_ebx==AMD_CPUID_EBX && info.cpuid_ecx==AMD_CPUID_ECX && info.cpuid_edx==AMD_CPUID_EDX) { |
| 15 | jermar | 112 | CPU->arch.vendor = VendorAMD; |
| 1 | jermar | 113 | } |
| 114 | |||
| 115 | /* |
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| 116 | * Check for Intel processor. |
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| 117 | */ |
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| 125 | jermar | 118 | if (info.cpuid_ebx==INTEL_CPUID_EBX && info.cpuid_ecx==INTEL_CPUID_ECX && info.cpuid_edx==INTEL_CPUID_EDX) { |
| 15 | jermar | 119 | CPU->arch.vendor = VendorIntel; |
| 1 | jermar | 120 | } |
| 121 | |||
| 122 | cpuid(1, &info); |
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| 15 | jermar | 123 | CPU->arch.family = (info.cpuid_eax>>8)&0xf; |
| 124 | CPU->arch.model = (info.cpuid_eax>>4)&0xf; |
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| 125 | CPU->arch.stepping = (info.cpuid_eax>>0)&0xf; |
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| 1 | jermar | 126 | } |
| 127 | } |
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| 128 | |||
| 22 | jermar | 129 | void cpu_print_report(cpu_t* m) |
| 1 | jermar | 130 | { |
| 131 | printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n", |
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| 132 | m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping, |
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| 133 | m->frequency_mhz); |
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| 134 | } |