diff options
Diffstat (limited to 'arch/arc/cpu/arc700/timer.c')
-rw-r--r-- | arch/arc/cpu/arc700/timer.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arc/cpu/arc700/timer.c b/arch/arc/cpu/arc700/timer.c new file mode 100644 index 0000000..a0acbbc --- /dev/null +++ b/arch/arc/cpu/arc700/timer.c @@ -0,0 +1,24 @@ +/* + * 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); +} |