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42 pj 1
/* Project:     OSLib
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 * Description: The OS Construction Kit
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 * Date:                1.6.2000
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 * Idea by:             Luca Abeni & Gerardo Lamastra
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 *
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 * OSLib is an SO project aimed at developing a common, easy-to-use
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 * low-level infrastructure for developing OS kernels and Embedded
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 * Applications; it partially derives from the HARTIK project but it
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 * currently is independently developed.
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 *
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 * OSLib is distributed under GPL License, and some of its code has
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 * been derived from the Linux kernel source; also some important
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 * ideas come from studying the DJGPP go32 extender.
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 *
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 * We acknowledge the Linux Community, Free Software Foundation,
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 * D.J. Delorie and all the other developers who believe in the
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 * freedom of software and ideas.
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 *
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 * For legalese, check out the included GPL license.
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 */
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/*      Code & data fot CPU identification      */
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#ifndef __LL_I386_HW_ARCH_H__
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#define __LL_I386_HW_ARCH_H__
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#include <ll/i386/defs.h>
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BEGIN_DEF
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#include <ll/i386/hw-data.h>
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#include <ll/i386/hw-instr.h>
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#include <ll/i386/hw-func.h>
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/* The following structure is filled up by the ll_init() and can be     */
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/* read by the kernel modules to know about the architecture            */
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/* Each time a new hardware CPU is added to the ll layer, you have to   */
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/* define a new XXX_ARCH structure, whose first field is a char *arch   */
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/* This is used to identify the architecture, then subsequent field     */
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/* can be decoded!!                                                     */
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/* WARNING: I tried to use bitfields, but this caused am INTO error?!?  */
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/* only when using GNU-C!! So i preferred to use standard DWORD flags   */
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/* Capabilities */
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#define LL_X86_HAS_INVLPG       0x01
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#define LL_X86_HAS_CPUID        0x02
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#define LL_X86_HAS_FPU          0x04
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#define LL_X86_INTERNAL_FPU     0x08
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#define LL_X86_HAS_TSTAMP       0x10
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/* Bugs */
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#define LL_X86_FDIV_BUG         0x01
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#define LL_X86_F00F_BUG         0x02
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typedef struct {
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    char *arch;
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    int cpu;    /* 0,1,2,3,4,5,6 ->
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                        8086/8,80186,80286,80386,80486,P5,PII o Overdrive */
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    int fpu;    /* 0,1,2,3 -> None,8087,80287,80387 */
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    char *model; /* Dx, Dx2, ... */
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    char vendor[12]; /* Intel, Cyrix, AMD or unknown */
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    DWORD capabilities;
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    DWORD bugs;
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    /* BUGs!! Warning: Currently, no workaround is available!
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    */
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    int f00f_bug;
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    int fdiv_bug;
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} X86_ARCH;
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struct ll_cpuInfo {
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        DWORD X86_cpu;
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        DWORD X86_cpuIdFlag;
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        DWORD X86_vendor_1;
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        DWORD X86_vendor_2;
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        DWORD X86_vendor_3;
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        DWORD X86_signature;
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        DWORD X86_IntelFeature_1;
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        DWORD X86_IntelFeature_2;
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        DWORD X86_StandardFeature;
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};
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typedef struct {
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    char *arch;
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    /* Tonino, fill up this stuff! */
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} AXP_ARCH;
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typedef union {
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    char *arch;
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    X86_ARCH x86;
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    AXP_ARCH axp;
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} LL_ARCH;
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void X86_get_CPU(struct ll_cpuInfo *p);
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void X86_get_FPU(void);
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int X86_is386(void);
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int X86_isCyrix(void);
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int X86_hasCPUID(void);
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void X86_enable_cyrix_cpuid(void);
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extern LL_ARCH ll_arch;
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END_DEF
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#endif /* __LL_I386_HW_ARCH_H__ */