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Diffstat (limited to 'src/arch/arm64/arch_timer.c')
-rw-r--r--src/arch/arm64/arch_timer.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/arch/arm64/arch_timer.c b/src/arch/arm64/arch_timer.c
new file mode 100644
index 0000000000..e7f3732b0e
--- /dev/null
+++ b/src/arch/arm64/arch_timer.c
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2018, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <timer.h>
+#include <arch/lib_helpers.h>
+
+void timer_monotonic_get(struct mono_time *mt)
+{
+ uint64_t tvalue = raw_read_cntpct_el0();
+ uint32_t tfreq = raw_read_cntfrq_el0();
+ long usecs = (tvalue * 1000000) / tfreq;
+ mono_time_set_usecs(mt, usecs);
+}