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| Rev | Author | Line No. | Line |
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| 251 | palkovsky | 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 | |||
| 38 | /* |
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| 39 | * Identification of CPUs. |
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| 40 | * Contains only non-MP-Specification specific SMP code. |
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| 41 | */ |
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| 42 | #define AMD_CPUID_EBX 0x68747541 |
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| 43 | #define AMD_CPUID_ECX 0x444d4163 |
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| 44 | #define AMD_CPUID_EDX 0x69746e65 |
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| 45 | |||
| 46 | #define INTEL_CPUID_EBX 0x756e6547 |
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| 47 | #define INTEL_CPUID_ECX 0x6c65746e |
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| 48 | #define INTEL_CPUID_EDX 0x49656e69 |
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| 49 | |||
| 50 | |||
| 51 | enum vendor { |
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| 52 | VendorUnknown=0, |
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| 53 | VendorAMD, |
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| 54 | VendorIntel |
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| 55 | }; |
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| 56 | |||
| 57 | static char *vendor_str[] = { |
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| 58 | "Unknown Vendor", |
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| 59 | "AuthenticAMD", |
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| 60 | "GenuineIntel" |
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| 61 | }; |
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| 62 | |||
| 63 | void set_TS_flag(void) |
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| 64 | { |
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| 257 | palkovsky | 65 | __asm__ volatile ( |
| 251 | palkovsky | 66 | "mov %%cr0,%%rax;" |
| 67 | "or $8,%%rax;" |
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| 68 | "mov %%rax,%%cr0;" |
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| 69 | : |
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| 70 | : |
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| 71 | :"%rax" |
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| 257 | palkovsky | 72 | ); |
| 251 | palkovsky | 73 | } |
| 74 | |||
| 75 | void reset_TS_flag(void) |
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| 76 | { |
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| 257 | palkovsky | 77 | __asm__ volatile ( |
| 251 | palkovsky | 78 | "mov %%cr0,%%rax;" |
| 79 | "btc $4,%%rax;" |
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| 80 | "mov %%rax,%%cr0;" |
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| 81 | : |
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| 82 | : |
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| 83 | :"%rax" |
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| 257 | palkovsky | 84 | ); |
| 251 | palkovsky | 85 | } |
| 257 | palkovsky | 86 | |
| 87 | void cpu_arch_init(void) |
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| 88 | { |
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| 89 | CPU->arch.tss = tss_p; |
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| 90 | CPU->fpu_owner=NULL; |
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| 91 | } |
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| 92 | |||
| 93 | |||
| 94 | void cpu_identify(void) |
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| 95 | { |
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| 96 | cpu_info_t info; |
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| 97 | int i; |
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| 98 | |||
| 99 | CPU->arch.vendor = VendorUnknown; |
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| 100 | if (has_cpuid()) { |
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| 101 | cpuid(0, &info); |
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| 102 | |||
| 103 | /* |
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| 104 | * Check for AMD processor. |
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| 105 | */ |
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| 106 | if (info.cpuid_ebx==AMD_CPUID_EBX && info.cpuid_ecx==AMD_CPUID_ECX && info.cpuid_edx==AMD_CPUID_EDX) { |
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| 107 | CPU->arch.vendor = VendorAMD; |
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| 108 | } |
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| 109 | |||
| 110 | /* |
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| 111 | * Check for Intel processor. |
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| 112 | */ |
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| 113 | if (info.cpuid_ebx==INTEL_CPUID_EBX && info.cpuid_ecx==INTEL_CPUID_ECX && info.cpuid_edx==INTEL_CPUID_EDX) { |
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| 114 | CPU->arch.vendor = VendorIntel; |
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| 115 | } |
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| 116 | |||
| 117 | cpuid(1, &info); |
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| 118 | CPU->arch.family = (info.cpuid_eax>>8)&0xf; |
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| 119 | CPU->arch.model = (info.cpuid_eax>>4)&0xf; |
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| 120 | CPU->arch.stepping = (info.cpuid_eax>>0)&0xf; |
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| 121 | } |
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| 122 | } |
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| 123 | |||
| 124 | void cpu_print_report(cpu_t* m) |
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| 125 | { |
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| 126 | printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n", |
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| 127 | m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping, |
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| 128 | m->frequency_mhz); |
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| 129 | } |