Add support for the VIA EPIA-CN baord, which uses C7 + CN700 + VT8237R.

This also contains various improvements of the CN700 code in svn.

Signed-off-by: Aaron Lwe <aaron.lwe@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3334 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

7 files changed, 562 insertions, 0 deletions

diff --git a/src/mainboard/via/epia-cn/Config.lb b/src/mainboard/via/epia-cn/Config.lb
new file mode 100644
index 0000000000..52eb18492f
--- /dev/null
+++ b/src/mainboard/via/epia-cn/Config.lb
@@ -0,0 +1,142 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2008 VIA Technologies, Inc.
+## (Written by Aaron Lwe <aaron.lwe@gmail.com> for VIA)
+##
+## 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; either version 2 of the License, or
+## (at your option) any later version.
+##
+## 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
+##
+
+if USE_FALLBACK_IMAGE
+	default ROM_SECTION_SIZE   = FALLBACK_SIZE
+	default ROM_SECTION_OFFSET = (ROM_SIZE - FALLBACK_SIZE)
+else
+	default ROM_SECTION_SIZE   = (ROM_SIZE - FALLBACK_SIZE)
+	default ROM_SECTION_OFFSET = 0
+end
+default PAYLOAD_SIZE = (ROM_SECTION_SIZE - ROM_IMAGE_SIZE)
+default CONFIG_ROM_PAYLOAD_START = (0xffffffff - ROM_SIZE + ROM_SECTION_OFFSET + 1)
+default _ROMBASE = (CONFIG_ROM_PAYLOAD_START + PAYLOAD_SIZE)
+default XIP_ROM_SIZE = 64 * 1024
+default XIP_ROM_BASE = (_ROMBASE + ROM_IMAGE_SIZE - XIP_ROM_SIZE)
+arch i386 end
+driver mainboard.o
+if HAVE_PIRQ_TABLE object irq_tables.o end
+if HAVE_MP_TABLE object mptable.o end
+if HAVE_ACPI_TABLES
+	object fadt.o
+	object dsdt.o
+	object acpi_tables.o
+end
+makerule ./failover.E
+	depends "$(MAINBOARD)/../../../arch/i386/lib/failover.c ./romcc"
+	action "./romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/../../../arch/i386/lib/failover.c -o $@"
+end
+makerule ./failover.inc
+	depends "$(MAINBOARD)/../../../arch/i386/lib/failover.c ./romcc"
+	action "./romcc    -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/../../../arch/i386/lib/failover.c -o $@"
+end
+makerule ./auto.E
+	depends	"$(MAINBOARD)/auto.c option_table.h ./romcc"
+	action	"./romcc -E -mcpu=c3 -O -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
+end
+makerule ./auto.inc
+	depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
+	action	"./romcc    -mcpu=c3 -O -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
+end
+mainboardinit cpu/x86/16bit/entry16.inc
+mainboardinit cpu/x86/32bit/entry32.inc
+ldscript /cpu/x86/16bit/entry16.lds
+ldscript /cpu/x86/32bit/entry32.lds
+if USE_FALLBACK_IMAGE
+	mainboardinit cpu/x86/16bit/reset16.inc
+	ldscript /cpu/x86/16bit/reset16.lds
+else
+	mainboardinit cpu/x86/32bit/reset32.inc
+	ldscript /cpu/x86/32bit/reset32.lds
+end
+mainboardinit arch/i386/lib/cpu_reset.inc
+mainboardinit arch/i386/lib/id.inc
+ldscript /arch/i386/lib/id.lds
+if USE_FALLBACK_IMAGE
+	ldscript /arch/i386/lib/failover.lds
+	mainboardinit ./failover.inc
+end
+mainboardinit cpu/x86/fpu/enable_fpu.inc
+mainboardinit cpu/x86/mmx/enable_mmx.inc
+mainboardinit ./auto.inc
+mainboardinit cpu/x86/mmx/disable_mmx.inc
+dir /pc80
+config chip.h
+
+chip northbridge/via/cn700			# Northbridge
+  device pci_domain 0 on			# PCI domain
+    device pci 0.0 on end			# AGP Bridge
+    device pci 0.1 on end			# Error Reporting
+    device pci 0.2 on end			# Host Bus Control
+    device pci 0.3 on end			# Memory Controller
+    device pci 0.4 on end			# Power Management
+    device pci 0.7 on end			# V-Link Controller
+    device pci 1.0 on end			# PCI Bridge
+    chip southbridge/via/vt8237r		# Southbridge
+      # Enable both IDE channels.
+      register "ide0_enable" = "1"
+      register "ide1_enable" = "1"
+      # Both cables are 40pin.
+      register "ide0_80pin_cable" = "0"
+      register "ide1_80pin_cable" = "0"
+      device pci f.0 on end			# IDE
+      register "fn_ctrl_lo" = "0x8a"
+      register "fn_ctrl_hi" = "0x9d"
+      device pci 10.0 on end			# USB 1.1
+      device pci 10.1 on end			# USB 1.1
+      device pci 10.2 on end			# USB 1.1
+      device pci 10.3 on end			# USB 1.1
+      device pci 11.0 on			# Southbridge LPC
+        chip superio/via/vt1211			# Super I/O
+          device pnp 2e.0 off			# Floppy
+            io 0x60 = 0x3f0
+            irq 0x70 = 6
+            drq 0x74 = 2
+          end
+          device pnp 2e.1 on			# Parallel Port
+            io 0x60 = 0x378
+            irq 0x70 = 7
+            drq 0x74 = 3
+          end
+          device pnp 2e.2 on			# COM1
+            io 0x60 = 0x3f8
+            irq 0x70 = 4
+          end
+          device pnp 2e.3 on			# COM2
+            io 0x60 = 0x2f8
+            irq 0x70 = 3
+          end
+          device pnp 2e.b on			# HWM
+            io 0x60 = 0xec00
+          end
+        end
+      end
+      device pci 11.5 on end			# AC'97 audio
+      # device pci 11.6 off end			# AC'97 Modem
+      device pci 12.0 on end			# Ethernet
+    end
+  end
+  device apic_cluster 0 on			# APIC cluster
+    chip cpu/via/model_c7			# VIA C7
+      device apic 0 on end			# APIC
+    end
+  end
+end
diff --git a/src/mainboard/via/epia-cn/Options.lb b/src/mainboard/via/epia-cn/Options.lb
new file mode 100644
index 0000000000..fee1920a6c
--- /dev/null
+++ b/src/mainboard/via/epia-cn/Options.lb
@@ -0,0 +1,108 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2008 VIA Technologies, Inc.
+## (Written by Aaron Lwe <aaron.lwe@gmail.com> for VIA)
+##
+## 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; either version 2 of the License, or
+## (at your option) any later version.
+##
+## 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
+##
+
+uses HAVE_MP_TABLE
+uses HAVE_PIRQ_TABLE
+uses USE_FALLBACK_IMAGE
+uses HAVE_FALLBACK_BOOT
+uses HAVE_HARD_RESET
+uses HAVE_OPTION_TABLE
+uses USE_OPTION_TABLE
+uses CONFIG_ROM_PAYLOAD
+uses IRQ_SLOT_COUNT
+uses MAINBOARD
+uses MAINBOARD_VENDOR
+uses MAINBOARD_PART_NUMBER
+uses COREBOOT_EXTRA_VERSION
+uses ARCH
+uses FALLBACK_SIZE
+uses STACK_SIZE
+uses HEAP_SIZE
+uses ROM_SIZE
+uses ROM_SECTION_SIZE
+uses ROM_IMAGE_SIZE
+uses ROM_SECTION_SIZE
+uses ROM_SECTION_OFFSET
+uses CONFIG_ROM_PAYLOAD_START
+uses CONFIG_COMPRESSED_PAYLOAD_NRV2B
+uses CONFIG_COMPRESSED_PAYLOAD_LZMA
+uses PAYLOAD_SIZE
+uses _ROMBASE
+uses _RAMBASE
+uses XIP_ROM_SIZE
+uses XIP_ROM_BASE
+uses HAVE_MP_TABLE
+uses HAVE_ACPI_TABLES
+uses CROSS_COMPILE
+uses CC
+uses HOSTCC
+uses OBJCOPY
+uses DEFAULT_CONSOLE_LOGLEVEL
+uses MAXIMUM_CONSOLE_LOGLEVEL
+uses CONFIG_CONSOLE_SERIAL8250
+uses CONFIG_UDELAY_TSC
+uses CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2
+uses CONFIG_PCI_ROM_RUN
+uses CONFIG_CONSOLE_VGA
+uses CONFIG_MAX_PCI_BUSES
+uses TTYS0_BAUD
+uses CONFIG_CHIP_NAME
+uses CONFIG_VIDEO_MB
+uses CONFIG_IOAPIC
+
+default ROM_SIZE = 512 * 1024
+default CONFIG_IOAPIC = 0
+default CONFIG_VIDEO_MB = 32
+default CONFIG_CONSOLE_SERIAL8250 = 1
+default CONFIG_PCI_ROM_RUN = 0
+default CONFIG_CONSOLE_VGA = 0
+default CONFIG_CHIP_NAME = 1
+default HAVE_FALLBACK_BOOT = 1
+default HAVE_MP_TABLE = 0
+default CONFIG_UDELAY_TSC = 1
+default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2 = 1
+default HAVE_HARD_RESET = 0
+default HAVE_PIRQ_TABLE = 1
+default IRQ_SLOT_COUNT = 10
+default HAVE_ACPI_TABLES = 0
+default HAVE_OPTION_TABLE = 1
+default ROM_IMAGE_SIZE = 64 * 1024
+default FALLBACK_SIZE = ROM_SIZE
+default USE_FALLBACK_IMAGE = 1
+default STACK_SIZE = 8 * 1024
+default HEAP_SIZE = 16 * 1024
+#default USE_OPTION_TABLE = !USE_FALLBACK_IMAGE
+default USE_OPTION_TABLE = 0
+default _RAMBASE = 0x00004000
+default CONFIG_ROM_PAYLOAD = 1
+default CROSS_COMPILE = ""
+default CC = "$(CROSS_COMPILE)gcc -m32"
+default HOSTCC = "gcc"
+
+##
+## Set this to the max PCI bus number you would ever use for PCI config I/O.
+## Setting this number very high will make pci_locate_device() take a long
+## time when it can't find a device.
+##
+default CONFIG_MAX_PCI_BUSES = 3
+
+end
+
diff --git a/src/mainboard/via/epia-cn/auto.c b/src/mainboard/via/epia-cn/auto.c
new file mode 100644
index 0000000000..592547b18a
--- /dev/null
+++ b/src/mainboard/via/epia-cn/auto.c
@@ -0,0 +1,131 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 VIA Technologies, Inc.
+ * (Written by Aaron Lwe <aaron.lwe@gmail.com> for VIA)
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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
+ */
+
+#define ASSEMBLY 1
+
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <device/pci_ids.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/romcc_io.h>
+#include <arch/hlt.h>
+#include "pc80/serial.c"
+#include "arch/i386/lib/console.c"
+#include "ram/ramtest.c"
+#include "northbridge/via/cn700/raminit.h"
+#include "cpu/x86/mtrr/earlymtrr.c"
+#include "cpu/x86/bist.h"
+#include "pc80/udelay_io.c"
+#include "lib/delay.c"
+#include "cpu/x86/lapic/boot_cpu.c"
+#include "southbridge/via/vt8237r/vt8237r_early_smbus.c"
+#include "southbridge/via/vt8235/vt8235_early_serial.c"
+
+static void memreset_setup(void)
+{
+}
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+	return smbus_read_byte(device, address);
+}
+
+#include "northbridge/via/cn700/raminit.c"
+
+static void enable_mainboard_devices(void)
+{
+	device_t dev;
+	u8 reg;
+
+	/*
+	 * If I enable SATA, FILO will not find the IDE disk, so I'll disable
+	 * SATA here. To not conflict with PCI spec, I'll move IDE device
+	 * from 00:0f.1 to 00:0f.0.
+	 */
+	dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
+				PCI_DEVICE_ID_VIA_VT6420_SATA), 0);
+	if (dev != PCI_DEV_INVALID) {
+		/* Enable PATA. */
+		reg = pci_read_config8(dev, 0xd1);
+		reg |= 0x08;
+		pci_write_config8(dev, 0xd1, reg);
+		reg = pci_read_config8(dev, 0x49);
+		reg |= 0x80;
+		pci_write_config8(dev, 0x49, reg);
+	} else {
+		print_debug("No SATA device\r\n");
+	}
+
+	/* Disable SATA, and PATA device will be 00:0f.0. */
+	dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
+				PCI_DEVICE_ID_VIA_VT8237R_LPC), 0);
+	if (dev == PCI_DEV_INVALID)
+		die("Southbridge not found!!!\r\n");
+	reg = pci_read_config8(dev, 0x50);
+	reg |= 0x08;
+	pci_write_config8(dev, 0x50, reg);
+}
+
+static const struct mem_controller ctrl = {
+	.d0f0 = 0x0000,
+	.d0f2 = 0x2000,
+	.d0f3 = 0x3000,
+	.d0f4 = 0x4000,
+	.d0f7 = 0x7000,
+	.d1f0 = 0x8000,
+	.channel0 = { 0x50 },
+};
+
+static void main(unsigned long bist)
+{
+	unsigned long x;
+	device_t dev;
+
+	/* Enable multifunction for northbridge. */
+	pci_write_config8(ctrl.d0f0, 0x4f, 0x01);
+
+	enable_vt8235_serial();
+	uart_init();
+	console_init();
+
+	print_spew("In auto.c:main()\r\n");
+
+	enable_smbus();
+	smbus_fixup(&ctrl);
+
+	if (bist == 0) {
+		print_debug("doing early_mtrr\r\n");
+		early_mtrr_init();
+	}
+
+	/* Halt if there was a built-in self test failure. */
+	report_bist_failure(bist);
+
+	print_debug("Enabling mainboard devices\r\n");
+	enable_mainboard_devices();
+
+	ddr_ram_setup(&ctrl);
+
+	/* ram_check(0, 640 * 1024); */
+
+	print_spew("Leaving auto.c:main()\r\n");
+}
diff --git a/src/mainboard/via/epia-cn/chip.h b/src/mainboard/via/epia-cn/chip.h
new file mode 100644
index 0000000000..ff91a02b98
--- /dev/null
+++ b/src/mainboard/via/epia-cn/chip.h
@@ -0,0 +1,26 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 VIA Technologies, Inc.
+ * (Written by Aaron Lwe <aaron.lwe@gmail.com> for VIA)
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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
+ */
+
+extern struct chip_operations mainboard_via_epia_cn_ops;
+
+struct mainboard_via_epia_cn_config {
+	int nothing;
+};
diff --git a/src/mainboard/via/epia-cn/cmos.layout b/src/mainboard/via/epia-cn/cmos.layout
new file mode 100644
index 0000000000..5ba4c032c1
--- /dev/null
+++ b/src/mainboard/via/epia-cn/cmos.layout
@@ -0,0 +1,74 @@
+entries
+
+#start-bit length  config config-ID    name
+#0            8       r       0        seconds
+#8            8       r       0        alarm_seconds
+#16           8       r       0        minutes
+#24           8       r       0        alarm_minutes
+#32           8       r       0        hours
+#40           8       r       0        alarm_hours
+#48           8       r       0        day_of_week
+#56           8       r       0        day_of_month
+#64           8       r       0        month
+#72           8       r       0        year
+#80           4       r       0        rate_select
+#84           3       r       0        REF_Clock
+#87           1       r       0        UIP
+#88           1       r       0        auto_switch_DST
+#89           1       r       0        24_hour_mode
+#90           1       r       0        binary_values_enable
+#91           1       r       0        square-wave_out_enable
+#92           1       r       0        update_finished_enable
+#93           1       r       0        alarm_interrupt_enable
+#94           1       r       0        periodic_interrupt_enable
+#95           1       r       0        disable_clock_updates
+#96         288       r       0        temporary_filler
+0          384       r       0        reserved_memory
+384          1       e       4        boot_option
+385          1       e       4        last_boot
+386          1       e       1        ECC_memory
+388          4       r       0        reboot_bits
+392          3       e       5        baud_rate
+400          1       e       1        power_on_after_fail
+412          4       e       6        debug_level
+416          4       e       7        boot_first
+420          4       e       7        boot_second
+424          4       e       7        boot_third
+428          4       h       0        boot_index
+432	     8       h       0        boot_countdown
+1008         16      h       0        check_sum
+
+enumerations
+
+#ID value   text
+1     0     Disable
+1     1     Enable
+2     0     Enable
+2     1     Disable
+4     0     Fallback
+4     1     Normal
+5     0     115200
+5     1     57600
+5     2     38400
+5     3     19200
+5     4     9600
+5     5     4800
+5     6     2400
+5     7     1200
+6     6     Notice
+6     7     Info
+6     8     Debug
+6     9     Spew
+7     0     Network
+7     1     HDD
+7     2     Floppy
+7     8     Fallback_Network
+7     9     Fallback_HDD
+7     10    Fallback_Floppy
+#7     3     ROM
+
+checksums
+
+checksum 392 1007 1008
+
+
diff --git a/src/mainboard/via/epia-cn/irq_tables.c b/src/mainboard/via/epia-cn/irq_tables.c
new file mode 100644
index 0000000000..fef553e219
--- /dev/null
+++ b/src/mainboard/via/epia-cn/irq_tables.c
@@ -0,0 +1,54 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 VIA Technologies, Inc.
+ * (Written by Aaron Lwe <aaron.lwe@gmail.com> for VIA)
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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
+ */
+
+#include <arch/pirq_routing.h>
+
+const struct irq_routing_table intel_irq_routing_table = {
+	PIRQ_SIGNATURE,
+	PIRQ_VERSION,
+	32 + 16 * IRQ_SLOT_COUNT,/* Max. number of devices on the bus */
+	0x00,			/* Interrupt router bus */
+	(0x11 << 3) | 0x0,	/* Interrupt router device */
+	0x828,			/* IRQs devoted exclusively to PCI usage */
+	0x1106,			/* Vendor */
+	0x596,			/* Device */
+	0,			/* Crap (miniport) */
+	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */
+	0x3e,			/* Checksum */
+	{
+		/* bus,     dev|fn,   {link, bitmap}, {link, bitmap}, {link, bitmap}, {link, bitmap},  slot, rfu */
+		{0x00,(0x08<<3)|0x0, {{0x01, 0xdef8}, {0x02, 0xdef8}, {0x03, 0xdef8}, {0x05, 0x0def8}}, 0x1, 0x0},
+		{0x00,(0x09<<3)|0x0, {{0x02, 0xdef8}, {0x03, 0xdef8}, {0x05, 0xdef8}, {0x01, 0x0def8}}, 0x2, 0x0},
+		{0x00,(0x0a<<3)|0x0, {{0x03, 0xdef8}, {0x05, 0xdef8}, {0x01, 0xdef8}, {0x02, 0x0def8}}, 0x3, 0x0},
+		{0x00,(0x0b<<3)|0x0, {{0x05, 0xdef8}, {0x01, 0xdef8}, {0x02, 0xdef8}, {0x03, 0x0def8}}, 0x4, 0x0},
+		{0x00,(0x0c<<3)|0x0, {{0x01, 0xdef8}, {0x02, 0xdef8}, {0x03, 0xdef8}, {0x05, 0x0def8}}, 0x5, 0x0},
+		{0x00,(0x11<<3)|0x0, {{0x00, 0xdef8}, {0x00, 0xdef8}, {0x03, 0xdef8}, {0x05, 0x0def8}}, 0x0, 0x0},
+		{0x00,(0x0f<<3)|0x0, {{0x01, 0xdef8}, {0x02, 0xdef8}, {0x03, 0xdef8}, {0x05, 0x0def8}}, 0x0, 0x0},
+		{0x00,(0x01<<3)|0x0, {{0x01, 0xdef8}, {0x02, 0xdef8}, {0x03, 0xdef8}, {0x05, 0x0def8}}, 0x0, 0x0},
+		{0x00,(0x10<<3)|0x0, {{0x01, 0xdef8}, {0x02, 0xdef8}, {0x03, 0xdef8}, {0x05, 0x0def8}}, 0x0, 0x0},
+		{0x00,(0x12<<3)|0x0, {{0x01, 0xdef8}, {0x00, 0xdef8}, {0x00, 0xdef8}, {0x00, 0x0def8}}, 0x0, 0x0},
+	}
+};
+
+unsigned long write_pirq_routing_table(unsigned long addr)
+{
+	return copy_pirq_routing_table(addr);
+}
diff --git a/src/mainboard/via/epia-cn/mainboard.c b/src/mainboard/via/epia-cn/mainboard.c
new file mode 100644
index 0000000000..e1eac58a62
--- /dev/null
+++ b/src/mainboard/via/epia-cn/mainboard.c
@@ -0,0 +1,27 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 VIA Technologies, Inc.
+ * (Written by Aaron Lwe <aaron.lwe@gmail.com> for VIA)
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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
+ */
+
+#include <device/device.h>
+#include "chip.h"
+
+struct chip_operations mainboard_via_epia_cn_ops = {
+	CHIP_NAME("VIA EPIA-CN Mainboard")
+};