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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
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| 3 | * Date: 1.6.2000 |
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| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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| 5 | * |
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| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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| 7 | * low-level infrastructure for developing OS kernels and Embedded |
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| 8 | * Applications; it partially derives from the HARTIK project but it |
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| 9 | * currently is independently developed. |
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| 10 | * |
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| 11 | * OSLib is distributed under GPL License, and some of its code has |
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| 12 | * been derived from the Linux kernel source; also some important |
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| 13 | * ideas come from studying the DJGPP go32 extender. |
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| 14 | * |
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| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
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| 16 | * D.J. Delorie and all the other developers who believe in the |
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| 17 | * freedom of software and ideas. |
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| 18 | * |
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| 19 | * For legalese, check out the included GPL license. |
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| 20 | */ |
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| 21 | |||
| 22 | /* CPU detection code */ |
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| 23 | |||
| 24 | #include <ll/i386/hw-data.h> |
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| 25 | #include <ll/i386/hw-arch.h> |
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| 26 | #include <ll/i386/mem.h> |
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| 27 | |||
| 28 | FILE(Cpu - C); |
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| 29 | |||
| 30 | INLINE_OP void cpuid(DWORD a, DWORD * outa, DWORD * outb, DWORD * outc, |
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| 31 | DWORD * outd) |
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| 32 | { |
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| 33 | #ifdef __OLD_GNU__ |
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| 34 | __asm__ __volatile__(".byte 0x0F,0xA2" |
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| 35 | #else |
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| 36 | __asm__ __volatile__("cpuid" |
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| 37 | #endif |
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| 38 | :"=a"(*outa), |
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| 39 | "=b"(*outb), "=c"(*outc), "=d"(*outd):"a"(a)); |
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| 40 | } |
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| 41 | |||
| 42 | void X86_get_CPU(struct ll_cpuInfo *p) |
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| 43 | { |
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| 44 | DWORD tmp; |
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| 45 | |||
| 46 | memset(p, 0, sizeof(struct ll_cpuInfo)); |
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| 47 | if (X86_is386()) { |
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| 48 | p->X86_cpu = 3; |
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| 49 | |||
| 50 | return; |
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| 51 | } |
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| 52 | if (X86_hasCPUID()) { |
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| 53 | p->X86_cpuIdFlag = 1; |
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| 54 | p->X86_cpu = 5; |
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| 55 | cpuid(0, &tmp, &(p->X86_vendor_1), |
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| 56 | &(p->X86_vendor_3), &(p->X86_vendor_2)); |
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| 57 | if (tmp >= 1) { |
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| 58 | cpuid(1, &(p->X86_signature), |
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| 59 | &(p->X86_IntelFeature_1), |
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| 60 | &(p->X86_IntelFeature_2), &(p->X86_StandardFeature)); |
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| 61 | } |
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| 62 | } else { |
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| 63 | p->X86_cpu = 4; |
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| 64 | if (X86_isCyrix()) { |
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| 65 | /* Err... Adjust IT!!!! */ |
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| 66 | p->X86_cpu = 11; |
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| 67 | } |
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| 68 | /* Need tests for AMD and others... */ |
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| 69 | } |
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| 70 | } |