Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arc / cpu / arc700 / timer.c

diff --git a/qemu/roms/u-boot/arch/arc/cpu/arc700/timer.c b/qemu/roms/u-boot/arch/arc/cpu/arc700/timer.c
new file mode 100644 (file)
index 0000000..a0acbbc
--- /dev/null
+++ b/qemu/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);
+}