blob: a5c58b5125a9dd6d4a21368748fcfefc20b3ee21 [file] [log] [blame]
#ifndef __ACPI_H
#define __ACPI_H
#include "types.h" // u32
void acpi_bios_init(void);
#define RSDP_SIGNATURE 0x2052545020445352LL // "RSD PTR "
struct rsdp_descriptor /* Root System Descriptor Pointer */
{
u8 signature [8]; /* ACPI signature, contains "RSD PTR " */
u8 checksum; /* To make sum of struct == 0 */
u8 oem_id [6]; /* OEM identification */
u8 revision; /* Must be 0 for 1.0, 2 for 2.0 */
u32 rsdt_physical_address; /* 32-bit physical address of RSDT */
u32 length; /* XSDT Length in bytes including hdr */
u64 xsdt_physical_address; /* 64-bit physical address of XSDT */
u8 extended_checksum; /* Checksum of entire table */
u8 reserved [3]; /* Reserved field must be 0 */
};
// XXX - not really part of acpi.
struct mptable_floating_s {
u32 signature;
u32 physaddr;
u8 length;
u8 spec_rev;
u8 checksum;
u8 feature1;
u8 feature2;
u8 reserved[3];
};
#define MPTABLE_SIGNAURE 0x5f504d5f // "_MP_"
#endif // acpi.h