src/acpi.h

   1 #ifndef __ACPI_H
   2 #define __ACPI_H
   3
   4 #include "types.h" // u32
   5
   6 void acpi_bios_init(void);
   7
   8 #define RSDP_SIGNATURE 0x2052545020445352LL // "RSD PTR "
   9
  10 struct rsdp_descriptor         /* Root System Descriptor Pointer */
  11 {
  12         u8                            signature [8];          /* 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 */
  21 };
  22
  23 // XXX - not really part of acpi.
  24 struct mptable_floating_s {
  25     u32 signature;
  26     u32 physaddr;
  27     u8 length;
  28     u8 spec_rev;
  29     u8 checksum;
  30     u8 feature1;
  31     u8 feature2;
  32     u8 reserved[3];
  33 };
  34
  35 #define MPTABLE_SIGNAURE 0x5f504d5f  // "_MP_"
  36
  37 #endif // acpi.h