116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
#ifndef __LIB__ACPI_H__
|
||
#define __LIB__ACPI_H__
|
||
|
||
#include <stdint.h>
|
||
#include <stddef.h>
|
||
#include <sys/cpu.h>
|
||
|
||
#define EBDA (ebda_get())
|
||
|
||
#if defined (BIOS)
|
||
static inline uintptr_t ebda_get(void) {
|
||
uintptr_t ebda = (uintptr_t)mminw(0x40e) << 4;
|
||
|
||
// Sanity checks
|
||
if (ebda < 0x80000 || ebda >= 0xa0000) {
|
||
ebda = 0x80000;
|
||
}
|
||
|
||
return ebda;
|
||
}
|
||
#endif
|
||
|
||
struct sdt {
|
||
char signature[4];
|
||
uint32_t length;
|
||
uint8_t rev;
|
||
uint8_t checksum;
|
||
char oem_id[6];
|
||
char oem_table_id[8];
|
||
uint32_t oem_rev;
|
||
char creator_id[4];
|
||
uint32_t creator_rev;
|
||
} __attribute__((packed));
|
||
|
||
struct rsdp {
|
||
char signature[8];
|
||
uint8_t checksum;
|
||
char oem_id[6];
|
||
uint8_t rev;
|
||
uint32_t rsdt_addr;
|
||
// Revision 2 only after this comment
|
||
uint32_t length;
|
||
uint64_t xsdt_addr;
|
||
uint8_t ext_checksum;
|
||
uint8_t reserved[3];
|
||
} __attribute__((packed));
|
||
|
||
struct rsdt {
|
||
struct sdt header;
|
||
char ptrs_start[];
|
||
} __attribute__((packed));
|
||
|
||
struct smbios_entry_point_32 {
|
||
char anchor_str[4];
|
||
/// This value summed with all the values of the table.
|
||
uint8_t checksum;
|
||
/// Length of the entry point table.
|
||
uint8_t length;
|
||
/// Major version of SMBIOS.
|
||
uint8_t major_version;
|
||
/// Minor version of SMBIOS.
|
||
uint8_t minor_version;
|
||
/// Size of the largest SMBIOS structure, in bytes, and encompasses the
|
||
/// structure’s formatted area and text strings
|
||
uint16_t max_structure_size;
|
||
uint8_t entry_point_revision;
|
||
char formatted_area[5];
|
||
|
||
char intermediate_anchor_str[5];
|
||
/// Checksum for values from intermediate anchor str to the
|
||
/// end of table.
|
||
uint8_t intermediate_checksum;
|
||
/// Total length of SMBIOS Structure Table, pointed to by the structure
|
||
/// table address, in bytes.
|
||
uint16_t table_length;
|
||
/// 32-bit physical starting address of the read-only SMBIOS Structure
|
||
/// Table.
|
||
uint32_t table_address;
|
||
/// Total number of structures present in the SMBIOS Structure Table.
|
||
uint16_t number_of_structures;
|
||
/// Indicates compliance with a revision of this specification.
|
||
uint8_t bcd_revision;
|
||
} __attribute__((packed));
|
||
|
||
struct smbios_entry_point_64 {
|
||
char anchor_str[5];
|
||
/// This value summed with all the values of the table.
|
||
uint8_t checksum;
|
||
/// Length of the entry point table.
|
||
uint8_t length;
|
||
/// Major version of SMBIOS.
|
||
uint8_t major_version;
|
||
/// Minor version of SMBIOS.
|
||
uint8_t minor_version;
|
||
uint8_t docrev;
|
||
uint8_t entry_point_revision;
|
||
uint8_t reserved;
|
||
/// Size of the largest SMBIOS structure, in bytes, and encompasses the
|
||
/// structure’s formatted area and text strings
|
||
uint16_t max_structure_size;
|
||
/// 64-bit physical starting address of the read-only SMBIOS Structure
|
||
/// Table.
|
||
uint64_t table_address;
|
||
} __attribute__((packed));
|
||
|
||
uint8_t acpi_checksum(void *ptr, size_t size);
|
||
void *acpi_get_rsdp(void);
|
||
|
||
void *acpi_get_rsdp_v1(void);
|
||
void *acpi_get_rsdp_v2(void);
|
||
|
||
void *acpi_get_table(const char *signature, int index);
|
||
void acpi_get_smbios(void **smbios32, void **smbios64);
|
||
|
||
#endif
|