1 files changed, 106 insertions, 0 deletions
diff --git a/kernel/src/acpi/acpi.h b/kernel/src/acpi/acpi.h
new file mode 100644
index 0000000..889497e
--- /dev/null
+++ b/kernel/src/acpi/acpi.h
@@ -0,0 +1,106 @@
+#pragma once
+
+#include <stdint.h>
+
+struct RootSystemDescriptionPointer {
+    char signature[8];
+    uint8_t checksum;
+    char oemid[6];
+    uint8_t revision;
+    uint32_t rsdt_address;
+};
+
+struct SystemDescriptionTableHeader {
+    char signature[4];
+    uint32_t length;
+    uint8_t revision;
+    uint8_t checksum;
+    char oem_id[6];
+    char oem_table_id[8];
+    uint32_t oem_revision;
+    uint32_t creator_id;
+    uint32_t creator_revision;
+};
+
+struct RootSystemDescriptionTable {
+    struct SystemDescriptionTableHeader header;
+    uint32_t sdt_table[];
+};
+
+struct GenericAddressStructure {
+    uint8_t address_space;
+    uint8_t bit_width;
+    uint8_t bit_offset;
+    uint8_t access_size;
+    uint64_t address;
+};
+
+struct FixedACPIDescriptionTable {
+    struct SystemDescriptionTableHeader header;
+    uint32_t firmware_ctrl;
+    uint32_t dsdt;
+ 
+    // field used in ACPI 1.0; no longer in use, for compatibility only
+    uint8_t  reserved;
+ 
+    uint8_t  preferred_power_management_profile;
+    uint16_t sci_interrupt;
+    uint32_t smi_command_port;
+    uint8_t  acpi_enable;
+    uint8_t  acpi_disable;
+    uint8_t  s4bios_req;
+    uint8_t  pstate_control;
+    uint32_t pm1_a_event_block;
+    uint32_t pm1_b_event_block;
+    uint32_t pm1_a_control_block;
+    uint32_t pm1_b_control_block;
+    uint32_t pm2_control_block;
+    uint32_t pm_timer_block;
+    uint32_t gpe0_block;
+    uint32_t gpe1_block;
+    uint8_t  pm1_event_length;
+    uint8_t  pm1_control_length;
+    uint8_t  pm2_control_length;
+    uint8_t  pm_timer_length;
+    uint8_t  gpe0_length;
+    uint8_t  gpe1_length;
+    uint8_t  gpe1_base;
+    uint8_t  cstate_control;
+    uint16_t worst_c2_latency;
+    uint16_t worst_c3_latency;
+    uint16_t flush_size;
+    uint16_t flush_stride;
+    uint8_t  duty_offset;
+    uint8_t  duty_width;
+    uint8_t  day_alarm;
+    uint8_t  month_alarm;
+    uint8_t  century;
+ 
+    // reserved in ACPI 1.0; used since ACPI 2.0+
+    uint16_t boot_architecture_flags;
+ 
+    uint8_t  reserved_2;
+    uint32_t flags;
+ 
+    // 12 byte structure; see below for details
+    struct GenericAddressStructure reset_reg;
+ 
+    uint8_t  reset_value;
+    uint8_t  reserved_3[3];
+ 
+    // 64bit pointers - Available on ACPI 2.0+
+    uint64_t x_firmware_control;
+    uint64_t x_dsdt;
+ 
+    struct GenericAddressStructure x_pm1_a_event_block;
+    struct GenericAddressStructure x_pm1_b_event_block;
+    struct GenericAddressStructure x_pm1_a_control_block;
+    struct GenericAddressStructure x_pm1_b_control_block;
+    struct GenericAddressStructure x_pm2_control_block;
+    struct GenericAddressStructure x_pm_timer_block;
+    struct GenericAddressStructure x_gpe0_block;
+    struct GenericAddressStructure x_gpe1_block;
+};
+
+void acpi_init(void);
+void acpi_poweroff(void);