1 files changed, 85 insertions, 0 deletions
diff --git a/arch/microblaze/cpu/cache.c b/arch/microblaze/cpu/cache.c
new file mode 100644
index 0000000..ce066b9
--- /dev/null
+++ b/arch/microblaze/cpu/cache.c
@@ -0,0 +1,85 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal SIMEK <monstr@monstr.eu>
+ *
+ * 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 <asm/asm.h>
+
+int dcache_status (void)
+{
+	int i = 0;
+	int mask = 0x80;
+	__asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory");
+	/* i&=0x80 */
+	__asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory");
+	return i;
+}
+
+int icache_status (void)
+{
+	int i = 0;
+	int mask = 0x20;
+	__asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory");
+	/* i&=0x20 */
+	__asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory");
+	return i;
+}
+
+void	icache_enable (void) {
+	MSRSET(0x20);
+}
+
+void	icache_disable(void) {
+	/* we are not generate ICACHE size -> flush whole cache */
+	flush_cache(0, 32768);
+	MSRCLR(0x20);
+}
+
+void	dcache_enable (void) {
+	MSRSET(0x80);
+}
+
+void	dcache_disable(void) {
+#ifdef XILINX_USE_DCACHE
+	flush_cache(0, XILINX_DCACHE_BYTE_SIZE);
+#endif
+	MSRCLR(0x80);
+}
+
+void flush_cache (ulong addr, ulong size)
+{
+	int i;
+	for (i = 0; i < size; i += 4)
+		asm volatile (
+#ifdef CONFIG_ICACHE
+				"wic	%0, r0;"
+#endif
+				"nop;"
+#ifdef CONFIG_DCACHE
+				"wdc.flush	%0, r0;"
+#endif
+				"nop;"
+				:
+				: "r" (addr + i)
+				: "memory");
+}