1 files changed, 56 insertions, 0 deletions
diff --git a/src/northbridge/via/vx900/romstrap.S b/src/northbridge/via/vx900/romstrap.S
new file mode 100644
index 0000000000..26c1ee694a
--- /dev/null
+++ b/src/northbridge/via/vx900/romstrap.S
@@ -0,0 +1,56 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2004 Tyan Computer
+ * (Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer)
+ * Copyright (C) 2007 Rudolf Marek <r.marek@assembler.cz>
+ * Copyright (C) 2009 One Laptop per Child, Association, Inc.
+ * Copyright (C) 2011-2012  Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ */
+
+/* As extracted from the manufacturer's ROM, the romstrap table looks like:
+ * .long 0x77886047 .long 0x00777777
+ * .long 0x00000000 .long 0x00000000
+ * .long 0x00888888 .long 0x00AA1111
+ * .long 0x00000000 .long 0x00000000
+ *
+ * The vendor BIOS then adjusts some of these settings very early on. Instead of
+ * adjusting those settings in code, we work them in the romstrap table.
+ *
+ */
+/* This file constructs the ROM strap table for VX900 */
+
+	.section ".romstrap", "a", @progbits
+
+	.globl __romstrap_start
+__romstrap_start:
+tblpointer:
+	.long 0x77886047
+	.long 0x00777777
+	.long 0x00000000
+	.long 0x00000000
+	.long 0x00888888
+	.long 0x00AA1111
+	.long 0x00000000
+	.long 0x00000000
+
+/*
+ * The pointer to above table should be at 0xffffffd0,
+ * the table itself MUST be aligned to 128B it seems!
+ */
+rspointers:
+	.long tblpointer				// It will be 0xffffffd0
+
+	.globl __romstrap_end
+
+__romstrap_end:
+.previous