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/*
* Initial LinuxBIOS ACPI Support - headers and defines.
*
* written by Stefan Reinauer <stepan@openbios.org>
* (C) 2004 SUSE LINUX AG
*
* The ACPI table structs are based on the Linux kernel sources.
*
*/
#ifndef __ASM_ACPI_H
#define __ASM_ACPI_H
#if HAVE_ACPI_TABLES==1
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
typedef unsigned long long u64;
#define RSDP_NAME "RSDP"
#define RSDP_SIG "RSD PTR " /* RSDT Pointer signature */
/* ACPI 2.0 table RSDP */
typedef struct acpi_rsdp {
char signature[8];
u8 checksum;
char oem_id[6];
u8 revision;
u32 rsdt_address;
u32 length;
u64 xsdt_address;
u8 ext_checksum;
u8 reserved[3];
} __attribute__((packed)) acpi_rsdp_t;
/* Generic Address Container */
typedef struct acpi_gen_regaddr {
u8 space_id;
u8 bit_width;
u8 bit_offset;
u8 resv;
u32 addrl;
u32 addrh;
} __attribute__ ((packed)) acpi_addr_t;
/* Generic ACPI Header, provided by (almost) all tables */
typedef struct acpi_table_header /* ACPI common table header */
{
char signature [4]; /* ACPI signature (4 ASCII characters) */\
u32 length; /* Length of table, in bytes, including header */\
u8 revision; /* ACPI Specification minor version # */\
u8 checksum; /* To make sum of entire table == 0 */\
char oem_id [6]; /* OEM identification */\
char oem_table_id [8]; /* OEM table identification */\
u32 oem_revision; /* OEM revision number */\
char asl_compiler_id [4]; /* ASL compiler vendor ID */\
u32 asl_compiler_revision; /* ASL compiler revision number */
} __attribute__ ((packed)) acpi_header_t;
/* RSDT */
typedef struct acpi_rsdt {
struct acpi_table_header header;
u32 entry[8];
} __attribute__ ((packed)) acpi_rsdt_t;
/* HPET TIMERS */
typedef struct acpi_hpet {
struct acpi_table_header header;
u32 id;
struct acpi_gen_regaddr addr;
u8 number;
u16 min_tick;
u8 attributes;
} __attribute__ ((packed)) acpi_hpet_t;
unsigned long write_acpi_tables(unsigned long addr);
#else // HAVE_ACPI_TABLES
#define write_acpi_tables(start) (start)
#endif
#endif
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