u-boot/arch/arc/cpu/arc700/timer.c
Alexey Brodkin 2f16ac9df4 arc: add cpu files
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Francois Bedard <fbedard@synopsys.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Heiko Schocher <hs@denx.de>
2014-02-07 08:14:32 -05:00

24 lines
553 B
C

/*
* Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm/arcregs.h>
#define NH_MODE (1 << 1) /* Disable timer if CPU is halted */
int timer_init(void)
{
write_aux_reg(ARC_AUX_TIMER0_CTRL, NH_MODE);
/* Set max value for counter/timer */
write_aux_reg(ARC_AUX_TIMER0_LIMIT, 0xffffffff);
/* Set initial count value and restart counter/timer */
write_aux_reg(ARC_AUX_TIMER0_CNT, 0);
return 0;
}
unsigned long timer_read_counter(void)
{
return read_aux_reg(ARC_AUX_TIMER0_CNT);
}