29 lines
680 B
C
29 lines
680 B
C
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#include "Tier0/apic.h"
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#include "Tier0/system.h"
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#include "Tier0/kstdio.h"
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#include "Tier0/paging.h"
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struct {
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T_APIC_LAPIC *APIC;
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} g_APIC;
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void apic_enable_lapic(void)
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{
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u64 APICMSR = system_msr_get(0x1B);
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if (APICMSR & (1 << 11))
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kprintf("[i] APIC enable flag set in APIC MSR.\n");
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else
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{
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kprintf("[i] APIC enable flag not set in APIC MSR. Trying to set it...\n");
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APICMSR |= (1 << 22);
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system_msr_set(0x1B, APICMSR);
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}
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u64 Virtual = paging_minivmm_allocate();
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kprintf("[i] LAPIC will be @0x%x.\n", Virtual);
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paging_map_page(Virtual, 0xFEE00000);
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g_APIC.APIC = (T_APIC_LAPIC *)Virtual;
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}
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