AGESA binaryPI: Consolidate ACPI for IMC

Change-Id: Ieff6041f3c9ad02f9cebae0ec83d0898abb0d601
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/18538
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 65 insertions, 0 deletions

diff --git a/src/southbridge/amd/pi/hudson/acpi/AmdImc.asl b/src/southbridge/amd/pi/hudson/acpi/AmdImc.asl
new file mode 100644
index 0000000000..19ea8f5f78
--- /dev/null
+++ b/src/southbridge/amd/pi/hudson/acpi/AmdImc.asl
@@ -0,0 +1,65 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ *
+ * 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.
+ */
+
+OperationRegion(IMIO, SystemIO, 0x3E, 0x02)
+Field(IMIO , ByteAcc, NoLock, Preserve) {
+	IMCX,8,
+	IMCA,8
+}
+
+IndexField(IMCX, IMCA, ByteAcc, NoLock, Preserve) {
+	Offset(0x80),
+	MSTI, 8,
+	MITS, 8,
+	MRG0, 8,
+	MRG1, 8,
+	MRG2, 8,
+	MRG3, 8,
+}
+
+Method(WACK, 0)
+{
+	Store(0, Local0)
+	Store(50, Local1)
+	While (LAnd (LNotEqual(Local0, 0xFA), LGreater(Local1,0))) {
+		Store(MRG0, Local0)
+		Sleep(10)
+		Decrement(Local1)
+	}
+}
+
+//Init
+Method (ITZE, 0)
+{
+	Store(0, MRG0)
+	Store(0xB5, MRG1)
+	Store(0, MRG2)
+	Store(0x96, MSTI)
+	WACK()
+
+	Store(0, MRG0)
+	Store(0, MRG1)
+	Store(0, MRG2)
+	Store(0x80, MSTI)
+	WACK()
+
+	Or(MRG2, 0x01, Local0)
+
+	Store(0, MRG0)
+	Store(0, MRG1)
+	Store(Local0, MRG2)
+	Store(0x81, MSTI)
+	WACK()
+}