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| author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
|---|---|---|
| committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
| commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
| tree | 65ca85f13617aee1dce474596800950f266a456c /roms/u-boot/arch/arc/cpu/arc700/timer.c | |
| download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip | |
Diffstat (limited to 'roms/u-boot/arch/arc/cpu/arc700/timer.c')
| -rw-r--r-- | roms/u-boot/arch/arc/cpu/arc700/timer.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arc/cpu/arc700/timer.c b/roms/u-boot/arch/arc/cpu/arc700/timer.c new file mode 100644 index 00000000..a0acbbc0 --- /dev/null +++ b/roms/u-boot/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); +} |