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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/arch/nios2/lib/time.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/arch/nios2/lib/time.c')
-rw-r--r--qemu/roms/u-boot/arch/nios2/lib/time.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/arch/nios2/lib/time.c b/qemu/roms/u-boot/arch/nios2/lib/time.c
new file mode 100644
index 000000000..d39604579
--- /dev/null
+++ b/qemu/roms/u-boot/arch/nios2/lib/time.c
@@ -0,0 +1,22 @@
+/*
+ * (C) Copyright 2003, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@psyent.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <watchdog.h>
+
+
+extern void dly_clks( unsigned long ticks );
+
+void __udelay(unsigned long usec)
+{
+ /* The Nios core doesn't have a timebase, so we do our
+ * best for now and call a low-level loop that counts
+ * cpu clocks.
+ */
+ unsigned long cnt = (CONFIG_SYS_CLK_FREQ/1000000) * usec;
+ dly_clks (cnt);
+}