AMD: Isolate AGESA and PI build environments for southbridge

To backport features introduced with recent Chromebooks and/or Intel
boards in general, heavy work on the AMD AGESA platform infrastructure
is required. With the AGESA PI available in binary form only, community
members have little means to verify, debug and develop for the said
platforms.

Thus it makes sense to fork the existing agesawrapper interfaces, to give
AMD PI platforms a clean and independent sandbox. New directory layout
reflects the separation already taken place under 3rdparty/ and vendorcode/.

Change-Id: Ia730f0e45e7c1bdfc0c91e95eb6729a77773e2b9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/7388
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Bruce Griffith <Bruce.Griffith@se-eng.com>
Tested-by: build bot (Jenkins)
diff --git a/src/southbridge/amd/pi/avalon/acpi/fch.asl b/src/southbridge/amd/pi/avalon/acpi/fch.asl
new file mode 100644
index 0000000..f2764aa
--- /dev/null
+++ b/src/southbridge/amd/pi/avalon/acpi/fch.asl
@@ -0,0 +1,188 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 Advanced Micro Devices, Inc.
+ * Copyright (C) 2013 Sage Electronic Engineering, LLC
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/* South Bridge */
+/*  _SB.PCI0 */
+
+/* Operating System Capabilities Method */
+Method(_OSC,4)
+{
+	// Create DWord-addressable fields from the Capabilities Buffer
+	CreateDWordField(Arg3,0,CDW1)
+	CreateDWordField(Arg3,4,CDW2)
+	CreateDWordField(Arg3,8,CDW3)
+
+	/* Check for proper PCI/PCIe UUID */
+	If(LEqual(Arg0,ToUUID("33DB4D5B-1FF7-401C-9657-7441C03DD766")))
+	{
+		/* Let OS control everything */
+		Return (Arg3)
+	} Else {
+		Or(CDW1,4,CDW1)	// Unrecognized UUID
+		Return(Arg3)
+	}
+}
+
+/* Describe the Southbridge devices */
+
+/* 0:11.0 - SATA */
+Device(STCR) {
+	Name(_ADR, 0x00110000)
+	#include "acpi/sata.asl"
+} /* end STCR */
+
+/* 0:14.0 - SMBUS */
+Device(SBUS) {
+	Name(_ADR, 0x00140000)
+} /* end SBUS */
+
+#include "usb.asl"
+
+/* 0:14.2 - HD Audio */
+#include "audio.asl"
+
+/* 0:14.3 - LPC */
+#include "lpc.asl"
+
+/* 0:14.7 - SD Controller */
+Device(SDCN) {
+	Name(_ADR, 0x00140007)
+} /* end SDCN */
+
+Name(CRES, ResourceTemplate() {
+	/* Set the Bus number and Secondary Bus number for the PCI0 device
+	 * The Secondary bus range for PCI0 lets the system
+	 * know what bus values are allowed on the downstream
+	 * side of this PCI bus if there is a PCI-PCI bridge.
+	 * PCI busses can have 256 secondary busses which
+	 * range from [0-0xFF] but they do not need to be
+	 * sequential.
+	 */
+	WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode,
+		0x0000,		/* address granularity */
+		0x0000,		/* range minimum */
+		0x00FF,		/* range maximum */
+		0x0000,		/* translation */
+		0x0100,		/* length */
+		,, PSB0)		/* ResourceSourceIndex, ResourceSource, DescriptorName */
+
+	IO(Decode16, 0x0CF8, 0x0CF8, 1,	8)
+
+	WORDIO(ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
+		0x0000,		/* address granularity */
+		0x0000,		/* range minimum */
+		0x0CF7,		/* range maximum */
+		0x0000,		/* translation */
+		0x0CF8		/* length */
+	)
+	WORDIO(ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
+		0x0000,		/* address granularity */
+		0x03B0,		/* range minimum */
+		0x03DF,		/* range maximum */
+		0x0000,		/* translation */
+		0x0030		/* length */
+	)
+
+	WORDIO(ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
+		0x0000,		/* address granularity */
+		0x0D00,		/* range minimum */
+		0xFFFF,		/* range maximum */
+		0x0000,		/* translation */
+		0xF300		/* length */
+	)
+
+	Memory32Fixed(READONLY, 0x000A0000, 0x00020000, VGAM)	/* VGA memory space */
+	Memory32Fixed(READONLY, 0x000C0000, 0x00020000, EMM1)	/* Assume C0000-E0000 empty */
+
+	/* memory space for PCI BARs below 4GB */
+	Memory32Fixed(ReadOnly, 0x00000000, 0x00000000, MMIO)
+}) /* End Name(_SB.PCI0.CRES) */
+
+Method(_CRS, 0) {
+	/* DBGO("\\_SB\\PCI0\\_CRS\n") */
+	CreateDWordField(CRES, ^MMIO._BAS, MM1B)
+	CreateDWordField(CRES, ^MMIO._LEN, MM1L)
+
+	/*
+	 * Declare memory between TOM1 and 4GB as available
+	 * for PCI MMIO.
+	 * Use ShiftLeft to avoid 64bit constant (for XP).
+	 * This will work even if the OS does 32bit arithmetic, as
+	 * 32bit (0x00000000 - TOM1) will wrap and give the same
+	 * result as 64bit (0x100000000 - TOM1).
+	 */
+	Store(TOM1, MM1B)
+	ShiftLeft(0x10000000, 4, Local0)
+	Subtract(Local0, TOM1, Local0)
+	Store(Local0, MM1L)
+
+	Return(CRES) /* note to change the Name buffer */
+} /* end of Method(_SB.PCI0._CRS) */
+
+/*
+ *
+ *               FIRST METHOD CALLED UPON BOOT
+ *
+ *  1. If debugging, print current OS and ACPI interpreter.
+ *  2. Get PCI Interrupt routing from ACPI VSM, this
+ *     value is based on user choice in BIOS setup.
+ */
+Method(_INI, 0) {
+	/* DBGO("\\_SB\\_INI\n") */
+	/* DBGO("   DSDT.ASL code from ") */
+	/* DBGO(__DATE__) */
+	/* DBGO(" ") */
+	/* DBGO(__TIME__) */
+	/* DBGO("\n   Sleep states supported: ") */
+	/* DBGO("\n") */
+	/* DBGO("   \\_OS=") */
+	/* DBGO(\_OS) */
+	/* DBGO("\n   \\_REV=") */
+	/* DBGO(\_REV) */
+	/* DBGO("\n") */
+
+	/* Determine the OS we're running on */
+	OSFL()
+
+	/* TODO: It is unstable. */
+	//#include "acpi/AmdImc.asl" /* Hudson IMC function */
+	//ITZE() /* enable IMC Fan Control*/
+} /* End Method(_SB._INI) */
+
+Method(OSFL, 0){
+
+	if(LNotEqual(OSVR, Ones)) {Return(OSVR)}	/* OS version was already detected */
+
+	if(CondRefOf(\_OSI,Local1))
+	{
+		Store(1, OSVR)					/* Assume some form of XP */
+		if (\_OSI("Windows 2006"))		/* Vista */
+		{
+			Store(2, OSVR)
+		}
+	} else {
+		If(WCMP(\_OS,"Linux")) {
+			Store(3, OSVR)				/* Linux */
+		} Else {
+			Store(4, OSVR)				/* Gotta be WinCE */
+		}
+	}
+	Return(OSVR)
+}