1 files changed, 53 insertions, 0 deletions
diff --git a/arch/powerpc/lib/cache.c b/arch/powerpc/lib/cache.c
new file mode 100644
index 0000000000..338b08bd77
--- /dev/null
+++ b/arch/powerpc/lib/cache.c
@@ -0,0 +1,53 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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/cache.h>
+#include <watchdog.h>
+
+void flush_cache(ulong start_addr, ulong size)
+{
+#ifndef CONFIG_5xx
+	ulong addr, start, end;
+
+	start = start_addr & ~(CONFIG_SYS_CACHELINE_SIZE - 1);
+	end = start_addr + size - 1;
+
+	for (addr = start; (addr <= end) && (addr >= start);
+			addr += CONFIG_SYS_CACHELINE_SIZE) {
+		asm volatile("dcbst 0,%0" : : "r" (addr) : "memory");
+		WATCHDOG_RESET();
+	}
+	/* wait for all dcbst to complete on bus */
+	asm volatile("sync" : : : "memory");
+
+	for (addr = start; (addr <= end) && (addr >= start);
+			addr += CONFIG_SYS_CACHELINE_SIZE) {
+		asm volatile("icbi 0,%0" : : "r" (addr) : "memory");
+		WATCHDOG_RESET();
+	}
+	asm volatile("sync" : : : "memory");
+	/* flush prefetch queue */
+	asm volatile("isync" : : : "memory");
+#endif
+}