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-rw-r--r--arch/arc/lib/timer.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arc/lib/timer.c b/arch/arc/lib/timer.c
new file mode 100644
index 0000000..a0acbbc
--- /dev/null
+++ b/arch/arc/lib/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);
+}