[Feature][T106]ZXW P56U09 code

Only Configure: Yes
Affected branch: master
Affected module: unknow
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: No
Doc Update: No

Change-Id: I3cbd8b420271eb20c2b40ebe5c78f83059cd42f3
diff --git a/boot/common/src/uboot/lib/time.c b/boot/common/src/uboot/lib/time.c
new file mode 100644
index 0000000..7243f4a
--- /dev/null
+++ b/boot/common/src/uboot/lib/time.c
@@ -0,0 +1,43 @@
+/*
+ * (C) Copyright 2000-2009
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <watchdog.h>
+
+#ifndef CONFIG_WD_PERIOD
+# define CONFIG_WD_PERIOD	(10 * 1000 * 1000)	/* 10 seconds default*/
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+void udelay(unsigned long usec)
+{
+	ulong kv;
+
+	do {
+		//WATCHDOG_RESET();
+		kv = usec > CONFIG_WD_PERIOD ? CONFIG_WD_PERIOD : usec;
+		__udelay (kv);
+		usec -= kv;
+	} while(usec);
+}