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, 87 insertions, 0 deletions

diff --git a/src/mainboard/aopen/dxplplusu/devicetree.cb b/src/mainboard/aopen/dxplplusu/devicetree.cb
new file mode 100644
index 0000000000..d465a82e7a
--- /dev/null
+++ b/src/mainboard/aopen/dxplplusu/devicetree.cb
@@ -0,0 +1,87 @@
+##
+## 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
+##
+
+chip northbridge/intel/e7505
+
+	device lapic_cluster 0 on
+		chip cpu/intel/socket_mPGA604
+			device lapic 0 on end
+		end
+	end
+
+	device pci_domain 0 on
+		device pci 0.0 on end # Chipset host controller
+		device pci 0.1 on end # Host RASUM controller
+		device pci 2.0 on # Hub interface B
+			chip southbridge/intel/i82870 # P64H2
+				device pci 1c.0 on end # IOAPIC - bus B
+				device pci 1d.0 on end # Hub to PCI-B bridge
+				device pci 1e.0 on end # IOAPIC - bus A
+				device pci 1f.0 on end # Hub to PCI-A bridge
+			end
+		end
+		device pci 4.0 off end #  (undocumented)
+		device pci 6.0 off end #  (undocumented)
+		chip southbridge/intel/i82801dx
+			device pci 1d.0 on end # USB UHCI
+			device pci 1d.1 on end # USB UHCI
+			device pci 1d.2 on end # USB UHCI
+			device pci 1d.7 on end # USB EHCI
+			device pci 1e.0 on # Hub to PCI bridge
+				device pci 2.0 off end
+			end
+			device pci 1f.0 on # LPC bridge
+				chip superio/smsc/lpc47m10x
+					device pnp 2e.0 off # Floppy
+						io 0x60 = 0x3f0
+						irq 0x70 = 6
+						drq 0x74 = 2
+					end
+					device pnp 2e.3 off # Parallel Port
+						io 0x60 = 0x378
+						irq 0x70 = 7
+					end
+					device pnp 2e.4 on # Com1
+						io 0x60 = 0x3f8
+						irq 0x70 = 4
+					end
+					device pnp 2e.5 off # Com2
+						io 0x60 = 0x2f8
+						irq 0x70 = 3
+					end
+					device pnp 2e.7 off # Keyboard
+						io 0x60 = 0x60
+						io 0x62 = 0x64
+						irq 0x70 = 1 # Keyboard interrupt
+						irq 0x72 = 12 # Mouse interrupt
+					end
+					device pnp 2e.a on # ACPI
+						io 0x60 = 0x0e00
+					end
+				end
+			end
+			device pci 1f.1 on end # IDE
+			device pci 1f.3 on end # SMBus
+			device pci 1f.5 on end # AC97 Audio
+			device pci 1f.6 off end # AC97 Modem
+		end # SB
+	end # PCI_DOMAIN
+end