blob: 63d3024843357d6c77a70291dee212a3b3f8ff1e [file] [log] [blame]
Kevin O'Connor276d4a92008-06-11 22:47:01 -04001#ifndef __ACPI_H
2#define __ACPI_H
3
4#include "types.h" // u32
5
6void acpi_bios_init(void);
Kevin O'Connor9967ab72008-12-18 21:57:33 -05007u32 find_resume_vector();
Kevin O'Connor276d4a92008-06-11 22:47:01 -04008
Kevin O'Connore10e6f82008-06-21 19:46:43 -04009#define RSDP_SIGNATURE 0x2052545020445352LL // "RSD PTR "
10
Kevin O'Connor35746442009-02-27 20:54:51 -050011struct rsdp_descriptor { /* Root System Descriptor Pointer */
12 u64 signature; /* ACPI signature, contains "RSD PTR " */
13 u8 checksum; /* To make sum of struct == 0 */
14 u8 oem_id [6]; /* OEM identification */
15 u8 revision; /* Must be 0 for 1.0, 2 for 2.0 */
16 u32 rsdt_physical_address; /* 32-bit physical address of RSDT */
17 u32 length; /* XSDT Length in bytes including hdr */
18 u64 xsdt_physical_address; /* 64-bit physical address of XSDT */
19 u8 extended_checksum; /* Checksum of entire table */
20 u8 reserved [3]; /* Reserved field must be 0 */
Kevin O'Connor276d4a92008-06-11 22:47:01 -040021};
22
Kevin O'Connor9967ab72008-12-18 21:57:33 -050023extern struct rsdp_descriptor *RsdpAddr;
24
Kevin O'Connor276d4a92008-06-11 22:47:01 -040025#endif // acpi.h