microblaze_v8: cache support

Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>

1 files changed, 45 insertions, 0 deletions

diff --git a/arch/microblaze/include/asm/cache.h b/arch/microblaze/include/asm/cache.h
new file mode 100644
index 000000000000..c4c64b43c074
--- /dev/null
+++ b/arch/microblaze/include/asm/cache.h
@@ -0,0 +1,45 @@
+/*
+ * Cache operations
+ *
+ * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2007-2009 PetaLogix
+ * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_CACHE_H
+#define _ASM_MICROBLAZE_CACHE_H
+
+#include <asm/registers.h>
+
+#define L1_CACHE_SHIFT	2
+/* word-granular cache in microblaze */
+#define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
+
+#define SMP_CACHE_BYTES	L1_CACHE_BYTES
+
+void _enable_icache(void);
+void _disable_icache(void);
+void _invalidate_icache(unsigned int addr);
+
+#define __enable_icache()		_enable_icache()
+#define __disable_icache()		_disable_icache()
+#define __invalidate_icache(addr)	_invalidate_icache(addr)
+
+void _enable_dcache(void);
+void _disable_dcache(void);
+void _invalidate_dcache(unsigned int addr);
+
+#define __enable_dcache()		_enable_dcache()
+#define __disable_dcache()		_disable_dcache()
+#define __invalidate_dcache(addr)	_invalidate_dcache(addr)
+
+/* FIXME - I don't think this is right */
+#ifdef CONFIG_XILINX_UNCACHED_SHADOW
+#define UNCACHED_SHADOW_MASK (CONFIG_XILINX_ERAM_SIZE)
+#endif
+
+#endif /* _ASM_MICROBLAZE_CACHE_H */