Rev 452 | Rev 532 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 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 |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 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 |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 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 |
||
| 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 |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | #include <arch/cpu.h> |
||
| 30 | #include <arch/cpuid.h> |
||
| 31 | #include <arch/pm.h> |
||
| 32 | |||
| 33 | #include <arch.h> |
||
| 34 | #include <arch/types.h> |
||
| 35 | #include <print.h> |
||
| 36 | #include <typedefs.h> |
||
| 391 | jermar | 37 | #include <fpu_context.h> |
| 1 | jermar | 38 | |
| 16 | jermar | 39 | #include <arch/smp/apic.h> |
| 40 | |||
| 1 | jermar | 41 | /* |
| 42 | * Identification of CPUs. |
||
| 43 | * Contains only non-MP-Specification specific SMP code. |
||
| 44 | */ |
||
| 45 | #define AMD_CPUID_EBX 0x68747541 |
||
| 46 | #define AMD_CPUID_ECX 0x444d4163 |
||
| 47 | #define AMD_CPUID_EDX 0x69746e65 |
||
| 48 | |||
| 49 | #define INTEL_CPUID_EBX 0x756e6547 |
||
| 50 | #define INTEL_CPUID_ECX 0x6c65746e |
||
| 51 | #define INTEL_CPUID_EDX 0x49656e69 |
||
| 52 | |||
| 141 | vana | 53 | |
| 1 | jermar | 54 | enum vendor { |
| 55 | VendorUnknown=0, |
||
| 56 | VendorAMD, |
||
| 57 | VendorIntel |
||
| 58 | }; |
||
| 59 | |||
| 60 | static char *vendor_str[] = { |
||
| 61 | "Unknown Vendor", |
||
| 62 | "AuthenticAMD", |
||
| 63 | "GenuineIntel" |
||
| 64 | }; |
||
| 65 | |||
| 309 | palkovsky | 66 | void fpu_disable(void) |
| 58 | vana | 67 | { |
| 309 | palkovsky | 68 | __asm__ volatile ( |
| 58 | vana | 69 | "mov %%cr0,%%eax;" |
| 70 | "or $8,%%eax;" |
||
| 71 | "mov %%eax,%%cr0;" |
||
| 72 | : |
||
| 73 | : |
||
| 74 | :"%eax" |
||
| 75 | ); |
||
| 76 | } |
||
| 77 | |||
| 309 | palkovsky | 78 | void fpu_enable(void) |
| 58 | vana | 79 | { |
| 309 | palkovsky | 80 | __asm__ volatile ( |
| 58 | vana | 81 | "mov %%cr0,%%eax;" |
| 82 | "and $0xffFFffF7,%%eax;" |
||
| 83 | "mov %%eax,%%cr0;" |
||
| 84 | : |
||
| 85 | : |
||
| 86 | :"%eax" |
||
| 87 | ); |
||
| 88 | } |
||
| 89 | |||
| 90 | |||
| 91 | |||
| 141 | vana | 92 | |
| 1 | jermar | 93 | void cpu_arch_init(void) |
| 94 | { |
||
| 15 | jermar | 95 | CPU->arch.tss = tss_p; |
| 75 | vana | 96 | CPU->fpu_owner=NULL; |
| 1 | jermar | 97 | } |
| 98 | |||
| 99 | |||
| 100 | void cpu_identify(void) |
||
| 101 | { |
||
| 102 | cpu_info_t info; |
||
| 103 | |||
| 15 | jermar | 104 | CPU->arch.vendor = VendorUnknown; |
| 1 | jermar | 105 | if (has_cpuid()) { |
| 106 | cpuid(0, &info); |
||
| 107 | |||
| 108 | /* |
||
| 109 | * Check for AMD processor. |
||
| 110 | */ |
||
| 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 | /* |
||
| 116 | * Check for Intel processor. |
||
| 117 | */ |
||
| 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); |
||
| 15 | jermar | 123 | CPU->arch.family = (info.cpuid_eax>>8)&0xf; |
| 124 | CPU->arch.model = (info.cpuid_eax>>4)&0xf; |
||
| 125 | CPU->arch.stepping = (info.cpuid_eax>>0)&0xf; |
||
| 1 | jermar | 126 | } |
| 127 | } |
||
| 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", |
||
| 132 | m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping, |
||
| 133 | m->frequency_mhz); |
||
| 134 | } |