77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
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#pragma once
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#include <stdint.h>
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#include <stddef.h>
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/************************
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*** Team Kitty, 2021 ***
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*** Chroma ***
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***********************/
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namespace ACPI {
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// The header of all System Descriptor Tables in the ACPI system.
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struct ACPIHeader {
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char Signature[4];
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uint32_t Length;
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uint8_t Revision;
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uint8_t Checksum;
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char OEMID[6];
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char OEMTableID[8];
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uint32_t OEMRevision;
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uint32_t CreatorID;
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uint32_t CreatorRevision;
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} __attribute__((packed));
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// Root System Description Pointer table container.
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class RSDP {
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public:
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// Header of RSDP Version 1 entries.
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struct DescriptorV1 {
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char Signature[8];
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uint8_t Checksum;
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char OEM[6];
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uint8_t Revision;
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uint32_t RSDT;
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} __attribute__((packed));
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// Header of RSDP Version 2 entries.
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struct DescriptorV2 {
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DescriptorV1 Header;
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uint32_t Length;
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size_t XSDT;
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uint8_t Checksum;
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uint8_t Reserved[3];
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} __attribute__((packed));
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// RSDP Entries themselves.
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struct RSDT {
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ACPIHeader Header;
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uint32_t* OtherSDTs;
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} __attribute__((packed));
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RSDP();
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static RSDP* instance;
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// Find the RSDP pointer in memory.
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void* GetRSDP();
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// Find the Fixed ACPI Descriptor (FADT) in memory.
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void* GetFACP(RSDT* Root);
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// Prepare virtual mapping of the RSDT
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void PagingInit();
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// Prepare the RSDT for reading.
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__attribute__((unused)) void Init(size_t RSDP);
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// Find the table with the specified name.
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void* FindEntry(const char* Name);
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// Dump all available information to the system log.
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void LogDump();
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private:
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size_t Version = 0;
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DescriptorV2* Descriptor;
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RSDT* Table;
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};
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}
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