1 files changed, 59 insertions, 0 deletions
diff --git a/arch/mn10300/kernel/mn10300-watchdog-low.S b/arch/mn10300/kernel/mn10300-watchdog-low.S
new file mode 100644
index 0000000..9962447
--- /dev/null
+++ b/arch/mn10300/kernel/mn10300-watchdog-low.S
@@ -0,0 +1,59 @@
+###############################################################################
+#
+# MN10300 Watchdog interrupt handler
+#
+# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+# Written by David Howells (dhowells@redhat.com)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public Licence
+# as published by the Free Software Foundation; either version
+# 2 of the Licence, or (at your option) any later version.
+#
+###############################################################################
+#include <linux/sys.h>
+#include <linux/linkage.h>
+#include <asm/intctl-regs.h>
+#include <asm/timer-regs.h>
+#include <asm/frame.inc>
+
+	.text
+
+###############################################################################
+#
+# Watchdog handler entry point
+# - special non-maskable interrupt
+#
+###############################################################################
+	.globl	watchdog_handler
+	.type	watchdog_handler,@function
+watchdog_handler:
+	add	-4,sp
+	SAVE_ALL
+
+	mov	0xffffffff,d0
+	mov	d0,(REG_ORIG_D0,fp)
+
+	mov	fp,d0
+	lsr	2,d1
+	call	watchdog_interrupt[],0		# watchdog_interrupt(regs,irq)
+
+	jmp	ret_from_intr
+
+	.size	watchdog_handler,.-watchdog_handler
+
+###############################################################################
+#
+# Watchdog touch entry point
+# - kept to absolute minimum (unfortunately, it's prototyped in linux/nmi.h so
+#   we can't inline it)
+#
+###############################################################################
+	.globl	touch_nmi_watchdog
+	.type	touch_nmi_watchdog,@function
+touch_nmi_watchdog:
+	clr	d0
+	mov	d0,(watchdog_alert_counter)
+	ret	[],0
+
+	.size	touch_nmi_watchdog,.-touch_nmi_watchdog