From 0ae7653128c80a4f2920cbe9b124792c2fd9d9e0 Mon Sep 17 00:00:00 2001
From: David Feng <fenghua@phytium.com.cn>
Date: Sat, 14 Dec 2013 11:47:35 +0800
Subject: arm64: core support

Relocation code based on a patch by Scott Wood, which is:
Signed-off-by: Scott Wood <scottwood@freescale.com>

Signed-off-by: David Feng <fenghua@phytium.com.cn>
---
 arch/arm/cpu/armv8/generic_timer.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 arch/arm/cpu/armv8/generic_timer.c

(limited to 'arch/arm/cpu/armv8/generic_timer.c')

diff --git a/arch/arm/cpu/armv8/generic_timer.c b/arch/arm/cpu/armv8/generic_timer.c
new file mode 100644
index 000000000..223b95e21
--- /dev/null
+++ b/arch/arm/cpu/armv8/generic_timer.c
@@ -0,0 +1,31 @@
+/*
+ * (C) Copyright 2013
+ * David Feng <fenghua@phytium.com.cn>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/system.h>
+
+/*
+ * Generic timer implementation of get_tbclk()
+ */
+unsigned long get_tbclk(void)
+{
+	unsigned long cntfrq;
+	asm volatile("mrs %0, cntfrq_el0" : "=r" (cntfrq));
+	return cntfrq;
+}
+
+/*
+ * Generic timer implementation of timer_read_counter()
+ */
+unsigned long timer_read_counter(void)
+{
+	unsigned long cntpct;
+	isb();
+	asm volatile("mrs %0, cntpct_el0" : "=r" (cntpct));
+	return cntpct;
+}
-- 
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