s3c44b0: extract cache from cpu.c

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/cpu/s3c44b0/cache.c b/cpu/s3c44b0/cache.c
new file mode 100644
index 0000000..bc10171
--- /dev/null
+++ b/cpu/s3c44b0/cache.c
@@ -0,0 +1,91 @@
+/*
+ * (C) Copyright 2004
+ * DAVE Srl
+ * http://www.dave-tech.it
+ * http://www.wawnet.biz
+ * mailto:info@wawnet.biz
+ *
+ * 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 <command.h>
+#include <asm/hardware.h>
+
+static void s3c44b0_flush_cache(void)
+{
+	volatile int i;
+	/* flush cycle */
+	for(i=0x10002000;i<0x10004800;i+=16)
+	{
+		*((int *)i)=0x0;
+	}
+}
+
+void icache_enable (void)
+{
+	ulong reg;
+
+	s3c44b0_flush_cache();
+
+	/*
+		Init cache
+		Non-cacheable area (everything outside RAM)
+		0x0000:0000 - 0x0C00:0000
+	 */
+	NCACHBE0 = 0xC0000000;
+	NCACHBE1 = 0x00000000;
+
+	/*
+		Enable chache
+	*/
+	reg = SYSCFG;
+	reg |= 0x00000006; /* 8kB */
+	SYSCFG = reg;
+}
+
+void icache_disable (void)
+{
+	ulong reg;
+
+	reg = SYSCFG;
+	reg &= ~0x00000006; /* 8kB */
+	SYSCFG = reg;
+}
+
+int icache_status (void)
+{
+	return 0;
+}
+
+void dcache_enable (void)
+{
+	icache_enable();
+}
+
+void dcache_disable (void)
+{
+	icache_disable();
+}
+
+int dcache_status (void)
+{
+	return dcache_status();
+}
+