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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2012-2014
* Texas Instruments Incorporated, <www.ti.com>
*/
#include <config.h>
#include <init.h>
#include <time.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <div64.h>
#include <bootstage.h>
DECLARE_GLOBAL_DATA_PTR;
#ifndef CFG_SYS_HZ_CLOCK
static inline u32 read_cntfrq(void)
{
u32 frq;
asm volatile("mrc p15, 0, %0, c14, c0, 0" : "=r" (frq));
return frq;
}
#endif
int timer_init(void)
{
gd->arch.tbl = 0;
gd->arch.tbu = 0;
#ifdef CFG_SYS_HZ_CLOCK
gd->arch.timer_rate_hz = CFG_SYS_HZ_CLOCK;
#else
gd->arch.timer_rate_hz = read_cntfrq();
#endif
return 0;
}
unsigned long long get_ticks(void)
{
ulong nowl, nowu;
asm volatile("mrrc p15, 0, %0, %1, c14" : "=r" (nowl), "=r" (nowu));
gd->arch.tbl = nowl;
gd->arch.tbu = nowu;
return (((unsigned long long)gd->arch.tbu) << 32) | gd->arch.tbl;
}
ulong timer_get_boot_us(void)
{
if (!gd->arch.timer_rate_hz)
timer_init();
return lldiv(get_ticks(), gd->arch.timer_rate_hz / 1000000);
}
ulong get_tbclk(void)
{
return gd->arch.timer_rate_hz;
}
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