From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 arch/mn10300/mm/cache-dbg-inv.S | 47 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 arch/mn10300/mm/cache-dbg-inv.S

(limited to 'arch/mn10300/mm/cache-dbg-inv.S')

diff --git a/arch/mn10300/mm/cache-dbg-inv.S b/arch/mn10300/mm/cache-dbg-inv.S
new file mode 100644
index 00000000..eba2d6dc
--- /dev/null
+++ b/arch/mn10300/mm/cache-dbg-inv.S
@@ -0,0 +1,47 @@
+/* MN10300 CPU cache invalidation routines
+ *
+ * Copyright (C) 2011 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/smp.h>
+#include <asm/page.h>
+#include <asm/cache.h>
+#include <asm/irqflags.h>
+#include <asm/cacheflush.h>
+#include "cache.inc"
+
+	.am33_2
+
+	.globl	debugger_local_cache_flushinv
+
+###############################################################################
+#
+# void debugger_local_cache_flushinv(void)
+#
+# Invalidate the entire icache
+#
+###############################################################################
+	ALIGN
+	.globl	debugger_local_cache_flushinv
+        .type	debugger_local_cache_flushinv,@function
+debugger_local_cache_flushinv:
+	#
+	# we only need to invalidate the icache in this cache mode
+	#
+	mov	CHCTR,a0
+	movhu	(a0),d0
+	btst	CHCTR_ICEN,d0
+	beq	debugger_local_cache_flushinv_end
+
+	invalidate_icache 1
+
+debugger_local_cache_flushinv_end:
+	ret	[],0
+	.size	debugger_local_cache_flushinv,.-debugger_local_cache_flushinv
-- 
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