southbridge/intel: Move `i82801gx/acpi/platform.asl` to `common/acpi`

Commit 24813c14 (i945: Consolidate acpi/platform.asl) creates the file
in the directory `src/southbridge/intel/i82801gx/acpi`. Devices with the
southbridge `intel/i82801ix`, like the laptop Lenovo X200, use the exact
same ASL code though. So share this in the directory
`src/southbridge/intel/common/acpi`.

Change-Id: I33b7993bcdbef7233ed85a683b2858ac72c1d642
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/11881
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 104 insertions, 0 deletions

diff --git a/src/southbridge/intel/common/acpi/platform.asl b/src/southbridge/intel/common/acpi/platform.asl
new file mode 100644
index 0000000000..5636e10abb
--- /dev/null
+++ b/src/southbridge/intel/common/acpi/platform.asl
@@ -0,0 +1,104 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+/* The APM port can be used for generating software SMIs */
+
+OperationRegion (APMP, SystemIO, 0xb2, 2)
+Field (APMP, ByteAcc, NoLock, Preserve)
+{
+	APMC, 8,	// APM command
+	APMS, 8		// APM status
+}
+
+/* Port 80 POST */
+
+OperationRegion (POST, SystemIO, 0x80, 1)
+Field (POST, ByteAcc, Lock, Preserve)
+{
+	DBG0, 8
+}
+
+/* SMI I/O Trap */
+Method(TRAP, 1, Serialized)
+{
+	Store (Arg0, SMIF)	// SMI Function
+	Store (0, TRP0)		// Generate trap
+	Return (SMIF)		// Return value of SMI handler
+}
+
+/* The _PIC method is called by the OS to choose between interrupt
+ * routing via the i8259 interrupt controller or the APIC.
+ *
+ * _PIC is called with a parameter of 0 for i8259 configuration and
+ * with a parameter of 1 for Local Apic/IOAPIC configuration.
+ */
+
+Method(_PIC, 1)
+{
+	// Remember the OS' IRQ routing choice.
+	Store(Arg0, PICM)
+}
+
+Method(GOS, 0)
+{
+	/* Determine the Operating System and save the value in OSYS.
+	 * We have to do this in order to be able to work around
+	 * certain windows bugs.
+	 *
+	 *    OSYS value | Operating System
+	 *    -----------+------------------
+	 *       2000    | Windows 2000
+	 *       2001    | Windows XP(+SP1)
+	 *       2002    | Windows XP SP2
+	 *       2006    | Windows Vista
+	 *       ????    | Windows 7
+	 */
+
+	/* Let's assume we're running at least Windows 2000 */
+	Store (2000, OSYS)
+
+	If (CondRefOf(_OSI, Local0)) {
+		/* Linux answers _OSI with "True" for a couple of
+		 * Windows version queries. But unlike Windows it
+		 * needs a Video repost, so let's determine whether
+		 * we're running Linux.
+		 */
+
+		If (_OSI("Linux")) {
+			Store (1, LINX)
+		}
+
+		If (_OSI("Windows 2001")) {
+			Store (2001, OSYS)
+		}
+
+		If (_OSI("Windows 2001 SP1")) {
+			Store (2001, OSYS)
+		}
+
+		If (_OSI("Windows 2001 SP2")) {
+			Store (2002, OSYS)
+		}
+
+		If (_OSI("Windows 2006")) {
+			Store (2006, OSYS)
+		}
+	}
+}