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ssimnb 2026-03-04 07:19:48 +01:00
commit ef80f65fbf
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196
include/sys/acpi.h Normal file
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#include <stdint.h>
#include <stdbool.h>
typedef struct rsdp_t {
uint64_t signature;
uint8_t checksum;
uint8_t oemid[6];
uint8_t revision;
uint32_t rsdt_address;
uint32_t length;
uint64_t xsdt_address;
uint8_t ext_checksum;
uint8_t reserved[3];
} __attribute((packed)) rsdp_t;
typedef struct desc_header_t {
uint8_t signature[4];
uint32_t length;
uint8_t revision;
uint8_t checksum;
uint8_t oemid[6];
uint8_t oem_tableid[8];
uint32_t oem_revision;
uint32_t creator_id;
uint32_t creator_revision;
} __attribute((packed)) desc_header_t;
typedef struct rsdt_t {
desc_header_t header;
uint32_t entries_base[];
} __attribute((packed)) rsdt_t;
typedef struct xsdt_t {
desc_header_t header;
uint64_t entries_base[];
} __attribute((packed)) xsdt_t;
typedef struct ics_t {
uint8_t type;
uint8_t length;
}__attribute((packed)) ics_t;
typedef struct madt_t {
desc_header_t header;
uint32_t lic_address;
uint32_t flags;
ics_t ics[];
} __attribute((packed)) madt_t;
typedef struct lapic_ao_t {
ics_t ics;
uint16_t reserved;
uint64_t lapic_address;
}__attribute((packed)) lapic_ao_t;
typedef struct gas_t {
uint8_t address_space_id;
uint8_t reg_bit_width;
uint8_t reg_bit_offset;
uint8_t access_size;
uint64_t address;
}__attribute((packed)) gas_t;
typedef struct hpet_t {
desc_header_t header;
uint32_t event_timer_blkid;
gas_t base_address;
uint8_t hpet_number;
uint16_t minimum_clk_tick;
uint8_t oem_attribute;
}__attribute((packed)) hpet_t;
typedef struct ioapic_t{
ics_t ics;
uint8_t ioapic_id;
uint8_t reserved;
uint32_t ioapic_address;
uint32_t gsi_base;
}__attribute((packed)) ioapic_t;
typedef struct iso_t{
ics_t ics;
uint8_t bus;
uint8_t source;
uint32_t gsi;
uint16_t flags;
}__attribute((packed)) iso_t;
/* Copied from OSDEV wiki */
typedef struct fadt_t{
desc_header_t header;
uint32_t FirmwareCtrl;
uint32_t Dsdt;
// field used in ACPI 1.0; no longer in use, for compatibility only
uint8_t Reserved;
uint8_t PreferredPowerManagementProfile;
uint16_t SCI_Interrupt;
uint32_t SMI_CommandPort;
uint8_t AcpiEnable;
uint8_t AcpiDisable;
uint8_t S4BIOS_REQ;
uint8_t PSTATE_Control;
uint32_t PM1aEventBlock;
uint32_t PM1bEventBlock;
uint32_t PM1aControlBlock;
uint32_t PM1bControlBlock;
uint32_t PM2ControlBlock;
uint32_t PMTimerBlock;
uint32_t GPE0Block;
uint32_t GPE1Block;
uint8_t PM1EventLength;
uint8_t PM1ControlLength;
uint8_t PM2ControlLength;
uint8_t PMTimerLength;
uint8_t GPE0Length;
uint8_t GPE1Length;
uint8_t GPE1Base;
uint8_t CStateControl;
uint16_t WorstC2Latency;
uint16_t WorstC3Latency;
uint16_t FlushSize;
uint16_t FlushStride;
uint8_t DutyOffset;
uint8_t DutyWidth;
uint8_t DayAlarm;
uint8_t MonthAlarm;
uint8_t Century;
// reserved in ACPI 1.0; used since ACPI 2.0+
uint16_t BootArchitectureFlags;
uint8_t Reserved2;
uint32_t Flags;
// 12 byte structure; see below for details
gas_t ResetReg;
uint8_t ResetValue;
uint8_t Reserved3[3];
// 64bit pointers - Available on ACPI 2.0+
uint64_t X_FirmwareControl;
uint64_t X_Dsdt;
gas_t X_PM1aEventBlock;
gas_t X_PM1bEventBlock;
gas_t X_PM1aControlBlock;
gas_t X_PM1bControlBlock;
gas_t X_PM2ControlBlock;
gas_t X_PMTimerBlock;
gas_t X_GPE0Block;
gas_t X_GPE1Block;
gas_t sleep_ctrl_reg;
gas_t sleep_status_reg;
uint64_t hypervisor_vendor_id;
uint8_t wbinvd;
uint8_t wbinvd_flush;
uint8_t proc_c1;
uint8_t p_lvl2_up;
uint8_t pwr_button;
uint8_t slp_button;
uint8_t fix_rtc;
uint8_t rtc_s4;
uint8_t tmr_val_ext;
uint8_t dck_cap;
}__attribute((packed)) fadt_t;
typedef struct conf_space_t {
uint64_t base_ecm;
uint16_t pci_seg_group;
uint8_t start_pci_num;
uint8_t end_pci_num;
uint32_t reserved;
}__attribute((packed)) conf_space_t;
typedef struct mcfg_t {
desc_header_t header;
uint64_t reserved;
conf_space_t conf_spaces[];
}__attribute((packed)) mcfg_t;
void acpi_init(void);
uint64_t *find_acpi_table(char *signature);
uint64_t *find_ics(uint64_t type);
uint32_t find_iso(uint8_t legacy);

102
include/sys/pci.h Normal file
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#include <stdbool.h>
#include <stdint.h>
void pci_init();
typedef struct pci_header_t {
uint16_t vendor_id;
uint16_t device_id;
uint16_t command;
uint16_t status;
uint8_t revision_id;
uint8_t prog_if;
uint8_t subclass;
uint8_t class_code;
uint8_t cache_line_size;
uint8_t latency_timer;
uint8_t header_type;
uint8_t bist;
}__attribute((packed)) pci_header_t;
typedef struct pci_header_0_t {
pci_header_t header;
uint32_t bar0;
uint32_t bar1;
uint32_t bar2;
uint32_t bar3;
uint32_t bar4;
uint32_t bar5;
uint32_t cardbus_cis_ptr;
uint16_t subsytem_vendor_id;
uint16_t subsystem_id;
uint32_t expansion_rom_base;
uint8_t capabilities_ptr;
uint8_t reserved1;
uint16_t reserved2;
uint32_t reserved3;
uint8_t interrupt_line;
uint8_t interrupt_pin;
uint8_t min_grant;
uint8_t max_latency;
}__attribute((packed)) pci_header_0_t;
typedef struct pci_header_1_t {
pci_header_t header;
uint32_t bar0;
uint32_t bar1;
uint8_t primary_bus_number;
uint8_t secondary_bus_number;
uint8_t subordinate_bus_number;
uint8_t secondary_latency_timer;
uint8_t io_base;
uint8_t io_limit;
uint16_t secondary_status;
uint16_t memory_base;
uint16_t memory_limit;
uint16_t prefetch_base_;
uint16_t prefetch_limit;
uint32_t prefetch_base_upper;
uint32_t prefetch_limit_upper;
uint16_t io_base_upper;
uint16_t io_limit_upper;
uint8_t capability_ptr;
uint8_t reserved1;
uint16_t reserved2;
uint32_t expansion_rom_base;
uint8_t interrupt_line;
uint8_t interrupt_pin;
uint16_t bridge_control;
}__attribute((packed)) pci_header_1_t;
typedef struct pci_header_ahci_t {
pci_header_t header;
uint32_t bar[4];
uint32_t ahci_bar;
uint16_t subsystem_id;
uint16_t subsytem_vendor_id;
uint32_t expansion_rom_base;
uint8_t capabilities_ptr;
uint16_t interrupt_info;
uint8_t min_grant;
uint8_t max_latency;
}__attribute((packed)) pci_header_ahci_t;
/* For internal use */
typedef struct l84_pci_function_return {
bool multi; // If device has multiple functions this is set to 1, else set to 0. If set to 0, functions index 1-7 are ignored
uint64_t func_addr[8];
} l84_pci_function_return;
typedef struct pci_structure {
uint16_t segment;
uint8_t bus;
uint8_t device;
uint64_t func_addr[8];
} pci_structure;
l84_pci_function_return check_device(uint64_t bus, uint64_t device);
uint64_t get_header(uint64_t bus, uint64_t device, uint64_t function);
pci_header_t *pci_find_device(uint64_t class, int subclass);

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include/sys/rand.h Normal file
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#include <stddef.h>
void krand_init();
size_t rand(void);

3
include/sys/time.h Normal file
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#include <stdint.h>
uint64_t get_timestamp_us();
void sleep(int ms);