dcea7360d2
+ acpi: Start implementation of table lookup + cpu: Remove useless argument to "cpu_invalidate_page" + cpu (x86_64): Removed "read_cr3" + arch/x86_64: Replace debug with trace for GDT & IDT initialization.
43 lines
No EOL
922 B
C
43 lines
No EOL
922 B
C
/*
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* The Soaplin Kernel
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* Copyright (C) 2025 The SILD Project
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*
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* acpi.c - ACPI table lookup
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*/
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#include <stdbool.h>
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#include <acpi/acpi.h>
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#include <arch/cpu.h>
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#include <boot/limine.h>
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#include <lib/log.h>
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#include <mm/memop.h>
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static bool __acpi_use_xsdt;
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static uint64_t __acpi_rsdt_addr;
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void acpi_init() {
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acpi_rsdp_t *rsdp = (acpi_rsdp_t*)limine_get_rsdp();
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if (memcmp(rsdp->sign, "RSD PTR ", 8))
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{
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fatal("acpi: ACPI RSDP is corrupt\n");
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hcf();
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}
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if (rsdp->rev >= 2)
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{
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trace("acpi: ACPI v2.0 or later detected: Using XSDT.\n");
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acpi_xsdp_t *xsdp = (acpi_xsdp_t *)rsdp;
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__acpi_use_xsdt = 1;
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__acpi_rsdt_addr = xsdp->xsdt_addr;
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goto initialized;
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}
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__acpi_use_xsdt = 0;
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__acpi_rsdt_addr = rsdp->rsdt_addr; // Do not use a pointer, to shut up the compiler.
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initialized:
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trace("acpi: Initialized!\n");
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} |