140 lines
3.3 KiB
C
140 lines
3.3 KiB
C
#ifndef RK_ACPI_H_
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#define RK_ACPI_H_
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#include <stdint.h>
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#define BIOS_START 0x000E0000
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#define BIOS_END 0x000FFFFF
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#define RSDP_SIG "RSD PTR "
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#define RSDP_SIG_LEN 8
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#define RSDP_SIZE 20
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#define ACPI_VER_1 0
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#define ACPI_VER_OTHER 2
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struct rsdp {
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char Signature[RSDP_SIG_LEN];
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uint8_t Checksum;
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char OEMID[6];
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uint8_t Revision;
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uint32_t RsdtAddress;
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} __attribute__ ((packed));
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struct ACPISDTHeader {
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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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};
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struct rsdt {
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struct ACPISDTHeader h;
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uint32_t other_sdt[];
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};
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struct mcfg_entry {
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uint64_t base_addr;
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uint16_t pci_seg_num;
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uint8_t pci_bus_start;
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uint8_t pci_bus_end;
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uint32_t reserved;
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};
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struct mcfg {
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struct ACPISDTHeader h;
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uint64_t reserved;
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struct mcfg_entry entries[];
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};
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struct GenericAddressStructure
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{
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uint8_t AddressSpace;
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uint8_t BitWidth;
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uint8_t BitOffset;
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uint8_t AccessSize;
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uint64_t Address;
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};
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struct fadt {
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struct ACPISDTHeader h;
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uint32_t FirmwareCtrl;
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uint32_t Dsdt;
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// field used in ACPI 1.0; no longer in use, for compatibility only
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uint8_t Reserved;
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uint8_t PreferredPowerManagementProfile;
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uint16_t SCI_Interrupt;
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uint32_t SMI_CommandPort;
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uint8_t AcpiEnable;
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uint8_t AcpiDisable;
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uint8_t S4BIOS_REQ;
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uint8_t PSTATE_Control;
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uint32_t PM1aEventBlock;
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uint32_t PM1bEventBlock;
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uint32_t PM1aControlBlock;
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uint32_t PM1bControlBlock;
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uint32_t PM2ControlBlock;
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uint32_t PMTimerBlock;
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uint32_t GPE0Block;
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uint32_t GPE1Block;
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uint8_t PM1EventLength;
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uint8_t PM1ControlLength;
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uint8_t PM2ControlLength;
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uint8_t PMTimerLength;
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uint8_t GPE0Length;
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uint8_t GPE1Length;
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uint8_t GPE1Base;
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uint8_t CStateControl;
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uint16_t WorstC2Latency;
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uint16_t WorstC3Latency;
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uint16_t FlushSize;
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uint16_t FlushStride;
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uint8_t DutyOffset;
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uint8_t DutyWidth;
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uint8_t DayAlarm;
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uint8_t MonthAlarm;
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uint8_t Century;
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// reserved in ACPI 1.0; used since ACPI 2.0+
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uint16_t BootArchitectureFlags;
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uint8_t Reserved2;
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uint32_t Flags;
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// 12 byte structure; see below for details
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struct GenericAddressStructure ResetReg;
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uint8_t ResetValue;
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uint8_t Reserved3[3];
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// 64bit pointers - Available on ACPI 2.0+
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uint64_t X_FirmwareControl;
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uint64_t X_Dsdt;
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struct GenericAddressStructure X_PM1aEventBlock;
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struct GenericAddressStructure X_PM1bEventBlock;
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struct GenericAddressStructure X_PM1aControlBlock;
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struct GenericAddressStructure X_PM1bControlBlock;
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struct GenericAddressStructure X_PM2ControlBlock;
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struct GenericAddressStructure X_PMTimerBlock;
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struct GenericAddressStructure X_GPE0Block;
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struct GenericAddressStructure X_GPE1Block;
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};
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struct rsdp *acpi_locate_rsdp();
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int acpi_validate_rsdp_checksum(struct rsdp *s);
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int acpi_validate_sdt_checksum(struct ACPISDTHeader *s);
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struct ACPISDTHeader *acpi_find_table(struct rsdt *root, const char *signature);
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void *acpi_locate_sdt(struct rsdt *rsdt, const char sig[4]);
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struct kernel_context;
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int acpi_init(struct kernel_context *ctx);
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#endif
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