1 files changed, 70 insertions, 0 deletions
diff --git a/arch/arm/cpu/sa1100/cpu.c b/arch/arm/cpu/sa1100/cpu.c
new file mode 100644
index 0000000..58e90dc
--- /dev/null
+++ b/arch/arm/cpu/sa1100/cpu.c
@@ -0,0 +1,70 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.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
+ */
+
+/*
+ * CPU specific code
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/system.h>
+
+#ifdef CONFIG_USE_IRQ
+DECLARE_GLOBAL_DATA_PTR;
+#endif
+
+static void cache_flush(void);
+
+int cleanup_before_linux (void)
+{
+	/*
+	 * this function is called just before we call linux
+	 * it prepares the processor for linux
+	 *
+	 * just disable everything that can disturb booting linux
+	 */
+
+	disable_interrupts ();
+
+	/* turn off I-cache */
+	icache_disable();
+	dcache_disable();
+
+	/* flush I-cache */
+	cache_flush();
+
+	return (0);
+}
+
+/* flush I/D-cache */
+static void cache_flush (void)
+{
+	unsigned long i = 0;
+
+	asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
+}