Atmosphere/exosphere/src/timers.h

#ifndef EXOSPHERE_TIMERS_H
#define EXOSPHERE_TIMERS_H

#include <stdint.h>
#include "memory_map.h"

/* Exosphere driver for the Tegra X1 Timers. */

static inline uintptr_t get_timers_base(void) {
    return MMIO_GET_DEVICE_ADDRESS(MMIO_DEVID_TMRs_WDTs);
}

#define TIMERS_BASE (get_timers_base())

#define TIMERUS_CNTR_1US_0 (*((volatile uint32_t *)(TIMERS_BASE + 0x10)))

typedef struct {
    uint32_t CONFIG;
    uint32_t STATUS;
    uint32_t COMMAND;
    uint32_t PATTERN;
} watchdog_timers_t;

#define GET_WDT(n) ((volatile watchdog_timers_t *)(TIMERS_BASE + 0x100 + 0x20 * n))
#define WDT_REBOOT_PATTERN 0xC45A
#define GET_WDT_REBOOT_CFG_REG(n) (*((volatile uint32_t *)(TIMERS_BASE + 0x60 + 0x8*n)))

void wait(uint32_t microseconds);

static inline uint32_t get_time(void) {
    return TIMERUS_CNTR_1US_0;
}

__attribute__ ((noreturn)) void watchdog_reboot(void);

#endif