Chloe M.
57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
/*
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* Copyright (c) 2026, Chloe M.
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* Provided under the BSD-3 clause.
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*
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* Description: Kernel processor control region
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* Author: Chloe M.
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*/
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#include <hal/kpcr.h>
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#include <ex/trace.h>
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#include <machine/cpuid.h>
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#include <stdef.h>
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#define DTRACE(Fmt, ...) \
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TRACE("[ CPU ]: " Fmt, ##__VA_ARGS__)
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static VOID
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ProcessorIdentify(MCB *Mcb)
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{
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ULONG Eax, Unused;
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UCHAR ModelLow, ModelHigh;
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UCHAR FamilyLow, FamilyHigh;
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if (Mcb == NULL) {
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return;
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}
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CPUID(1, Eax, Unused, Unused, Unused);
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/* Extarct the model ID */
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ModelLow = (Eax >> 4) & 0xF;
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ModelHigh = (Eax >> 16) & 0xF;
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Mcb->ModelId = (ModelHigh << 4) | ModelLow;
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/* Extract the family ID */
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FamilyLow = (Eax >> 8) & 0xF;
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FamilyHigh = (Eax >> 20) & 0xFF;
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Mcb->FamilyId = (FamilyHigh << 4) | FamilyLow;
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/* Informational logging */
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DTRACE("model : %X\n", Mcb->ModelId);
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DTRACE("family : %X\n", Mcb->FamilyId);
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}
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VOID
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HalKpcrP1Init(KPCR *Kpcr)
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{
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MCB *Mcb;
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if (Kpcr == NULL) {
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return;
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}
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Mcb = &Kpcr->Mcb;
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ProcessorIdentify(Mcb);
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}
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