nds32/ag102: add ag102 soc support

Add lowlevel ag102 soc support.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/arch/nds32/cpu/n1213/ag102/watchdog.S b/arch/nds32/cpu/n1213/ag102/watchdog.S
new file mode 100644
index 0000000..56cecda
--- /dev/null
+++ b/arch/nds32/cpu/n1213/ag102/watchdog.S
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2011 Andes Technology Corporation
+ * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.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 <asm/arch-ag102/ag102.h>
+#include <linux/linkage.h>
+
+.text
+
+#ifndef CONFIG_SKIP_TRUNOFF_WATCHDOG
+ENTRY(turnoff_watchdog)
+
+#define WD_CR		0xC
+#define WD_ENABLE	0x1
+
+	! Turn off the watchdog, according to Faraday FTWDT010 spec
+	li 	$p0, (CONFIG_FTWDT010_BASE+WD_CR)	! Get the addr of WD CR
+	lwi	$p1, [$p0]				! Get the config of WD
+	andi	$p1, $p1, 0x1f				! Wipe out useless bits
+	li	$r0, ~WD_ENABLE
+	and	$p1, $p1, $r0				! Set WD disable
+	sw	$p1, [$p0]				! Write back to WD CR
+
+	! Disable Interrupts by clear GIE in $PSW reg
+	setgie.d
+
+	ret
+
+ENDPROC(turnoff_watchdog)
+#endif