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58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#ifndef _ACPI_H_
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#define _ACPI_H_
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/**
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* \file
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*
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* Provides support for ACPI (Find & parse tables)
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*
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*//*
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* Copyright (C) 2020-2022 Martin Whitaker.
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* Copyright (C) 2004-2022 Sam Demeulemeester.
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#define FADT_PM_TMR_BLK_OFFSET 76
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#define FADT_MINOR_REV_OFFSET 131
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#define FADT_X_PM_TMR_BLK_OFFSET 208
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/**
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* A struct containing various ACPI-related infos for later uses.
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*/
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typedef struct __attribute__ ((packed)) {
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uint8_t ver_maj;
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uint8_t ver_min;
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uintptr_t rsdp_addr;
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uintptr_t madt_addr;
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uintptr_t fadt_addr;
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uintptr_t hpet_addr;
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uintptr_t pm_addr;
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bool pm_is_io;
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} acpi_t;
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/**
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* The search step that located the ACPI RSDP (for debug).
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*/
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extern const char *rsdp_source;
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/**
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* Global ACPI config struct
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*/
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extern acpi_t acpi_config;
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/**
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* ACPI Table Checksum Function
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*/
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int acpi_checksum(const void *data, int length);
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/**
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* Look for specific ACPI Tables Addresses (RSDP, MADT, ...)
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* and parse some of the tables
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*/
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void acpi_init(void);
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#endif /* _ACPI_H_ */
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