Initial import of slof-JX-1.7.0-4

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/slof/ofw.S b/slof/ofw.S
new file mode 100644
index 0000000..a717314
--- /dev/null
+++ b/slof/ofw.S
@@ -0,0 +1,42 @@
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <cpu.h>
+#include <xvect.h>
+
+	.section ".slof.loader","ax"
+
+	/* this only works if paflof is running below 4GB */
+	lis	r31, fdt_start@h	/* save address of */
+	ori	r31, r31, fdt_start@l	/* flattened device */
+	std	r3, 0(r31)		/* tree */
+
+	/* this only works if paflof is running below 4GB */
+	lis	r31, romfs_base@h	/* save address of */
+	ori	r31, r31, romfs_base@l	/* the romfs */
+	std	r4, 0(r31)
+
+	/* this only works if paflof is running below 4GB */
+	lis	r31, epapr_magic@h	/* if it is an epapr compliant */
+	ori	r31, r31, epapr_magic@l	/* low level firmware; then r6 */
+	std	r6, 0(r31)		/* contains the epapr magic */
+
+	/* fill in handler address */
+
+	/* this only works if paflof is running below 4GB */
+	lis	r3, _slof_text@h
+	ori	r3, r3, _slof_text@l
+	ld	r3, 0(r3)
+	std	r3, XVECT_M_HANDLER(0)
+
+	/* GO! */
+	ba	0x100