southbridge/amd/sr5650: Add IOMMU support

Change-Id: I2083d0c5653515c27d4626c62a6499b850f7547b
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/12044
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/southbridge/amd/sr5650/cmn.h b/src/southbridge/amd/sr5650/cmn.h
index db27d4f..0c0fd29 100644
--- a/src/southbridge/amd/sr5650/cmn.h
+++ b/src/southbridge/amd/sr5650/cmn.h
@@ -2,6 +2,7 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
  *
  * 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
@@ -22,6 +23,8 @@
 #define NBHTIU_INDEX 	0x94 /* Note: It is different with RS690, whose HTIU index is 0xA8 */
 #define NBMC_INDEX 	0xE8
 #define NBPCIE_INDEX  	0xE0
+#define L2CFG_INDEX  	0xF0
+#define L1CFG_INDEX  	0xF8
 #define EXT_CONF_BASE_ADDRESS	CONFIG_MMCONF_BASE_ADDRESS
 #define	TEMP_MMIO_BASE_ADDRESS	0xC0000000