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+/**
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+ * 解析acpi信息的模块
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+ **/
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+
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+#pragma once
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+
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+#include "../../common/glib.h"
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+
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+#define ACPI_ICS_TYPE_PROCESSOR_LOCAL_APIC 0
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+#define ACPI_ICS_TYPE_IO_APIC 1
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+#define ACPI_ICS_TYPE_INTERRUPT_SOURCE_OVERRIDE 2
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+#define ACPI_ICS_TYPE_NMI_SOURCE 3
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+#define ACPI_ICS_TYPE_LOCAL_APIC_NMI 4
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+#define ACPI_ICS_TYPE_LOCAL_APIC_ADDRESS_OVERRIDE 5
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+#define ACPI_ICS_TYPE_IO_SAPIC 6
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+#define ACPI_ICS_TYPE_LOCAL_SAPIC 7
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+#define ACPI_ICS_TYPE_PLATFORM_INTERRUPT_SOURCES 8
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+#define ACPI_ICS_TYPE_PROCESSOR_LOCAL_x2APIC 9
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+#define ACPI_ICS_TYPE_PROCESSOR_LOCAL_x2APIC_NMI 0xA
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+#define ACPI_ICS_TYPE_PROCESSOR_GICC 0xB
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+#define ACPI_ICS_TYPE_PROCESSOR_GICD 0xC
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+#define ACPI_ICS_TYPE_PROCESSOR_GIC_MSI_Frame 0xD
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+#define ACPI_ICS_TYPE_PROCESSOR_GICR 0xE
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+#define ACPI_ICS_TYPE_PROCESSOR_GIC_ITS 0xF
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+// 0x10-0x7f Reserved. OSPM skips structures of the reserved type.
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+// 0x80-0xff Reserved for OEM use
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+
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+struct acpi_RSDP_t
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+{
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+ unsigned char Signature[8];
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+ unsigned char Checksum;
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+ unsigned char OEMID[6];
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+
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+ unsigned char Revision;
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+
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+ // 32bit physical address of the RSDT
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+ uint RsdtAddress;
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+};
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+
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+struct acpi_RSDP_2_t
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+{
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+ struct acpi_RSDP_t rsdp1;
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+
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+ // fields below are only valid when the revision value is 2 or above
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+ // 表的长度（单位：字节）从offset=0开始算
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+ uint Length;
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+ // 64bit的XSDT的物理地址
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+ ul XsdtAddress;
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+ unsigned char ExtendedChecksum; // 整个表的checksum，包括了之前的checksum区域
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+
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+ unsigned char Reserved[3];
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+};
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+
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+struct acpi_system_description_table_header_t
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+{
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+ // The ascii string representation of the table header.
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+ unsigned char Signature[4];
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+ // 整个表的长度（单位：字节），包括了header，从偏移量0处开始
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+ uint Length;
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+ // The revision of the structure corresponding to the signature field for this table.
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+ unsigned char Revision;
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+ // The entire table, including the checksum field, must add to zero to be considered valid.
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+ char Checksum;
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+
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+ unsigned char OEMID[6];
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+ unsigned char OEM_Table_ID[8];
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+ uint OEMRevision;
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+ uint CreatorID;
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+ uint CreatorRevision;
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+};
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+
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+// =========== MADT结构，其中Signature为APIC ============
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+struct acpi_Multiple_APIC_Description_Table_t
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+{
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+ struct acpi_system_description_table_header_t header;
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+
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+ // 32bit的，每个处理器可访问的local中断控制器的物理地址
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+ uint Local_Interrupt_Controller_Address;
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+
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+ // Multiple APIC flags, 详见 ACPI Specification Version 6.3, Table 5-44
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+ uint flags;
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+
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+ void *Interrupt_Controller_Structure;
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+};
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+
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+struct apic_Interrupt_Controller_Structure_header_t
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+{
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+ unsigned char type;
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+ unsigned char length;
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+};
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+
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+struct acpi_Processor_Local_APIC_Structure_t
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+{
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+ // type=0
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+ struct apic_Interrupt_Controller_Structure_header_t header;
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+ unsigned char ACPI_Processor_UID;
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+ // 处理器的local apic id
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+ unsigned char ACPI_ID;
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+ //详见 ACPI Specification Version 6.3, Table 5-47
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+ uint flags;
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+};
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+
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+struct acpi_Processor_IO_APIC_Structure_t
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+{
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+ // type=1
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+ struct apic_Interrupt_Controller_Structure_header_t header;
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+ unsigned char IO_APIC_ID;
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+ unsigned char Reserved;
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+ // 32bit的IO APIC物理地址 （每个IO APIC都有一个独立的物理地址）
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+ uint IO_APIC_Address;
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+ // 当前IO APIC的全局系统中断向量号起始值
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+ // The number of intr inputs is determined by the IO APIC's Max Redir Entry register.
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+ uint Global_System_Interrupt_Base;
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+};
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+
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+// =========== RSDT 结构 =============
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+struct acpi_RSDT_Structure_t
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+{
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+ // 通过RSDT的header->Length可以计算出entry的数量n
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+ // n = (length - 32)/4
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+ struct acpi_system_description_table_header_t header;
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+
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+ // 一个包含了n个32bit物理地址的数组，指向了其他的description headers
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+ uint *Entry;
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+};
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+
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+// =========== XSDT 结构 =============
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+struct acpi_XSDT_Structure_t
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+{
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+ // 通过RSDT的header->Length可以计算出entry的数量n
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+ // n = (length - 32)/8
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+ struct acpi_system_description_table_header_t header;
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+
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+ // 一个包含了n个64bit物理地址的数组，指向了其他的description headers
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+ ul *Entry;
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+};
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+
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+// 要被迭代的系统描述表的开头的sign
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+struct acpi_iter_SDT_header_t
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+{
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+ unsigned char Signature[8];
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+};
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+
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+/**
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+ * @brief 迭代器，用于迭代描述符头（位于ACPI标准文件的Table 5-29）
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+ * @param _fun 迭代操作调用的函数
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+ * @param _data 数据
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+ */
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+void acpi_iter_SDT(bool (*_fun)(const struct acpi_iter_SDT_header_t *, void *),
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+ void *_data);
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+
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+/**
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+ * @brief 获取MADT信息
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+ *
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+ * @param _iter_data 要被迭代的信息的结构体
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+ * @param _data 返回信息的结构体指针
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+ * @param count 返回数组的长度
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+ * @return true
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+ * @return false
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+ */
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+bool acpi_get_MADT(const struct acpi_iter_SDT_header_t *_iter_data, void *_data);
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+
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+// 初始化acpi模块
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+void acpi_init();
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fslongjin