diff options
Diffstat (limited to 'arch/arm/cpu/armv8/generic_timer.c')
-rw-r--r-- | arch/arm/cpu/armv8/generic_timer.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/generic_timer.c b/arch/arm/cpu/armv8/generic_timer.c new file mode 100644 index 0000000000..223b95e210 --- /dev/null +++ b/arch/arm/cpu/armv8/generic_timer.c @@ -0,0 +1,31 @@ +/* + * (C) Copyright 2013 + * David Feng <fenghua@phytium.com.cn> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <command.h> +#include <asm/system.h> + +/* + * Generic timer implementation of get_tbclk() + */ +unsigned long get_tbclk(void) +{ + unsigned long cntfrq; + asm volatile("mrs %0, cntfrq_el0" : "=r" (cntfrq)); + return cntfrq; +} + +/* + * Generic timer implementation of timer_read_counter() + */ +unsigned long timer_read_counter(void) +{ + unsigned long cntpct; + isb(); + asm volatile("mrs %0, cntpct_el0" : "=r" (cntpct)); + return cntpct; +} |