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authorTimothy Pearson <tpearson@raptorengineering.com>2017-08-23 15:54:21 -0500
committerTimothy Pearson <tpearson@raptorengineering.com>2017-08-23 15:54:21 -0500
commit0223e595f4033e91e93403a7317bcc9e47676b8f (patch)
tree2ccd7127bc343f82456b76eeb0da2d380f6eaf65 /arch/nios2/lib/time.c
downloadast2050-uboot-0223e595f4033e91e93403a7317bcc9e47676b8f.zip
ast2050-uboot-0223e595f4033e91e93403a7317bcc9e47676b8f.tar.gz
Initial import of modified u-boot tree
Original upstream URL: git://git.denx.de/u-boot.git Original upstream GIT hash: 62c175fbb8a0f9a926c88294ea9f7e88eb898f6c
Diffstat (limited to 'arch/nios2/lib/time.c')
-rw-r--r--arch/nios2/lib/time.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/nios2/lib/time.c b/arch/nios2/lib/time.c
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+/*
+ * (C) Copyright 2003, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@psyent.com>
+ *
+ * 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>
+
+
+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);
+}
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