Add support for A-Open DXPL Plus-U motherboard

This is an old (pre-2005) entry-level server mainboard. The code
is adapted from mainboard/intel/xe7501devkit.

Featured chips:
 - Dual socket604
 - E7505 northbridge
 - 82801DB southbridge (with EHCI debug port)
 - 82870p2 PCI-X bridge
 - LPC47M102S-MC super-io
 - 512kB FWH flash (flashrom does the job well)

What works:
 - Dual-Xeon P4/HT boot with microcode update
 - RAM: registered ECC DDR266 in dual-channel
 - PCI-X slot interrupts with ACPI and I/O apic
 - On-board PCI-X GbE and SCSI
 - ACPI power-off and wakeup with PME#

Notes :
 - Current ACPI is more or less a mess
 - Interrupts do not route correctly with PIRQ
 - MP-table is not implemented
 - Issues with reboots remain (cold and warm)
 - Many superio devices are disabled by default
 - Audio codec is not investigated

Change-Id: I02d18c83f485a09ada65dde03bcc86e9163f2011
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/303
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

1 files changed, 183 insertions, 0 deletions

diff --git a/src/mainboard/aopen/dxplplusu/acpi/superio.asl b/src/mainboard/aopen/dxplplusu/acpi/superio.asl
new file mode 100644
index 0000000000..15b5e084e1
--- /dev/null
+++ b/src/mainboard/aopen/dxplplusu/acpi/superio.asl
@@ -0,0 +1,183 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 Kyösti Mälkki <kyosti.malkki@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.
+ *
+ * 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
+ */
+
+
+/* SuperIO GPIO configuration via logical device 0x0A */
+
+Name (MSBF, ResourceTemplate ()
+{
+	IO (Decode16, 0x0000, 0x0000, 0x01, 0x80, _Y1B)
+})
+
+OperationRegion (LPC0, SystemIO, 0x0E00, 0x60)
+Field (LPC0, ByteAcc, NoLock, Preserve)
+{
+	PME0,   8,
+	Offset (0x02),	PME2,8,
+	Offset (0x04),	PME4,8,
+	Offset (0x0A),	PMEA,8,
+	Offset (0x23),
+		GC10,8, GC11,8, GC12,8, GC13,8, GC14,8, GC15,8, GC16,8, GC17,8,
+		GC20,8, GC21,8, GC22,8, GC23,8, GC24,8, GC25,8, GC26,8, GC27,8,
+		GC30,8, GC31,8, GC32,8, GC33,8, GC34,8, GC35,8, GC36,8, GC37,8,
+		GC40,8, GC41,8, GC42,8, GC43,8,
+
+	Offset (0x3F),
+		GC50,8, GC51,8, GC52,8, GC53,8, GC54,8, GC55,8, GC56,8, GC57,8,
+		GC60,8, GC61,8,
+
+	Offset (0x4B),
+		GP_1,8, GP_2,8, GP_3,8, GP_4,8, GP_5,8, GP_6,8,
+	Offset (0x56),	FAN1,8,
+	Offset (0x5D),	LED1,8, LED2,8,
+}
+
+OperationRegion (SMC1, SystemIO, 0x2E, 0x02)
+Field (SMC1, ByteAcc, NoLock, Preserve)
+{
+	INDX,   8,	DATA,   8
+}
+
+IndexField (INDX, DATA, ByteAcc, NoLock, Preserve)
+{
+	Offset (0x07),	LDN,    8,
+	Offset (0x22),	PWRC,   8,
+	Offset (0x30),	ACTR,   8,
+	Offset (0x60),
+		IOAH,   8,	IOAL,   8,
+		IOBH,   8,	IOBL,   8,
+
+	Offset (0x70),	INTR,   8,
+	Offset (0x72),	INT1,   8,
+	Offset (0x74),	DMCH,   8,
+	Offset (0xB2),	SPS1,   8,	SPS2,   8,
+	Offset (0xB8),	D2TS,   8,
+	Offset (0xF0),	OPT1,   8,	OPT2,   8,	OPT3,   8,
+	Offset (0xF4),	WDTC,   8,
+	Offset (0xF6),	GP01,   8,	GP02,   8,	GP04,   8
+}
+
+Method (ECFG, 0, NotSerialized)
+{
+	Store (0x55, INDX)
+}
+Method (XCFG, 0, NotSerialized)
+{
+	Store (0xAA, INDX)
+}
+
+Method (_CRS, 0, NotSerialized)
+{
+	CreateWordField (MSBF, \_SB.PCI0.ICH0.SMSC._Y1B._MIN, IOM1)
+	CreateWordField (MSBF, \_SB.PCI0.ICH0.SMSC._Y1B._MAX, IOM2)
+	CreateByteField (MSBF, \_SB.PCI0.ICH0.SMSC._Y1B._LEN, IOML)
+
+	ECFG ()
+	Store (0x0A, \_SB.PCI0.ICH0.SMSC.LDN)
+	Store (0x00, IOM1)
+	Store (0x00, IOM2)
+	Or (\_SB.PCI0.ICH0.SMSC.IOAH, IOM1, IOM1)
+	ShiftLeft (IOM1, 0x08, IOM1)
+	Or (\_SB.PCI0.ICH0.SMSC.IOAL, IOM1, IOM1)
+	Store (IOM1, IOM2)
+	If (LNotEqual (IOM1, 0x00))
+	{
+		Store (0x80, IOML)
+	}
+	XCFG ()
+
+	Return (MSBF)
+}
+
+
+Method (_INI, 0, NotSerialized)
+{
+	/* GPIO configuration */
+	Store (0x00, GC10)
+	Store (0x81, GC11)
+	Store (0x00, GC17)
+	Store (0x0c, GC21)
+	Store (0x00, GC22)
+	Store (0x04, GC27)
+	Store (0x04, GC30)
+	Store (0x01, GC31)
+	Store (0x01, GC32)
+	Store (0x01, GC33)
+	Store (0x01, GC34) /* GPI password jumper */
+	Store (0x01, GC35) /* GPI scsi enable jumper */
+#if 1
+	Store (0x01, GC42)  /* GPI */
+#else
+	Store (0x84, GC42)  /* nIO_PME */
+#endif
+	Store (0x86, GC60) /* led 1 */
+	Store (0x81, GC61) /* led 2 ?? */
+
+	/* GPIO initial output levels */
+	Store (GP_1, Local0)
+	And( Local0, 0x7C, Local0)
+	Or ( Local0, 0x81, Local0)
+	Store (Local0, GP_1)
+
+	Store (GP_2, Local0)
+	And( Local0, 0xFE, Local0)
+	Or ( Local0, 0x00, Local0)
+	Store (Local0, GP_2)
+
+	Store (GP_3, Local0)
+	And( Local0, 0x7F, Local0)
+	Or ( Local0, 0x80, Local0)
+	Store (Local0, GP_3)
+
+	Store (GP_4, Local0)
+	And( Local0, 0x7F, Local0)
+	Or ( Local0, 0x00, Local0)
+	Store (Local0, GP_4)
+
+	/* Power Led */
+	Store (LED1, Local0)
+	And( Local0, 0xfc, Local0)
+	Or ( Local0, 0x01, Local0)
+	Store (Local0, LED1)
+
+}
+
+Method (MLED, 1, NotSerialized)
+{
+	If (LEqual (Arg0, 0x00))
+	{
+		Store (0x00, LED1)
+	}
+
+	If (LOr (LEqual (Arg0, 0x01), LEqual (Arg0, 0x02)))
+	{
+		Store (0x01, LED1)
+	}
+
+	If (LEqual (Arg0, 0x03))
+	{
+		Store (0x02, LED1)
+	}
+
+	If (LOr (LEqual (Arg0, 0x04), LEqual (Arg0, 0x05)))
+	{
+		Store (0x03, LED1)
+	}
+}
+