diff --git a/Makefile b/Makefile
index 346d46a..ba5dd08 100644
--- a/Makefile
+++ b/Makefile
@@ -192,6 +192,11 @@
 else
 override CONFIG_ATAHPT = no
 endif
+ifeq ($(CONFIG_ATAVIA), yes)
+UNSUPPORTED_FEATURES += CONFIG_ATAVIA=yes
+else
+override CONFIG_ATAVIA = no
+endif
 ifeq ($(CONFIG_DRKAISER), yes)
 UNSUPPORTED_FEATURES += CONFIG_DRKAISER=yes
 else
@@ -320,6 +325,11 @@
 else
 override CONFIG_ATAHPT = no
 endif
+ifeq ($(CONFIG_ATAVIA), yes)
+UNSUPPORTED_FEATURES += CONFIG_ATAVIA=yes
+else
+override CONFIG_ATAVIA = no
+endif
 ifeq ($(CONFIG_SATAMV), yes)
 UNSUPPORTED_FEATURES += CONFIG_SATAMV=yes
 else
@@ -384,6 +394,9 @@
 # IMPORTANT: This code is not yet working!
 CONFIG_ATAHPT ?= no
 
+# VIA VT6421A LPC memory support
+CONFIG_ATAVIA ?= yes
+
 # Always enable FT2232 SPI dongles for now.
 CONFIG_FT2232_SPI ?= yes
 
@@ -535,6 +548,12 @@
 NEED_PCI := yes
 endif
 
+ifeq ($(CONFIG_ATAVIA), yes)
+FEATURE_CFLAGS += -D'CONFIG_ATAVIA=1'
+PROGRAMMER_OBJS += atavia.o
+NEED_PCI := yes
+endif
+
 ifeq ($(CONFIG_FT2232_SPI), yes)
 # This is a totally ugly hack.
 FEATURE_CFLAGS += $(shell LC_ALL=C grep -q "FTDISUPPORT := yes" .features && printf "%s" "-D'CONFIG_FT2232_SPI=1'")
diff --git a/atavia.c b/atavia.c
new file mode 100644
index 0000000..952a860
--- /dev/null
+++ b/atavia.c
@@ -0,0 +1,197 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2011 Jonathan Kollasch <jakllsch@kollasch.net>
+ * Copyright (C) 2012-2013 Stefan Tauner
+ *
+ * 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 <stdlib.h>
+#include <string.h>
+#include "flash.h"
+#include "programmer.h"
+#include "hwaccess.h"
+
+#define PCI_VENDOR_ID_VIA	0x1106
+
+#define VIA_MAX_RETRIES		300
+
+#define BROM_ADDR		0x60
+
+#define BROM_DATA		0x64
+
+#define BROM_ACCESS		0x68
+#define BROM_TRIGGER		0x80
+#define BROM_WRITE		0x40
+#define BROM_SIZE_MASK		0x30
+#define BROM_SIZE_64K		0x00
+#define BROM_SIZE_32K		0x10
+#define BROM_SIZE_16K		0x20
+#define BROM_SIZE_0K		0x30
+#define BROM_BYTE_ENABLE_MASK	0x0f
+
+#define BROM_STATUS		0x69
+#define BROM_ERROR_STATUS	0x80
+
+/* Select the byte we want to access. This is done by clearing the bit corresponding to the byte we want to
+ * access, leaving the others set (yes, really). */
+#define ENABLE_BYTE(address)	((~(1 << ((address) & 3))) & BROM_BYTE_ENABLE_MASK)
+#define BYTE_OFFSET(address)	(((addr) & 3) * 8)
+
+const struct dev_entry ata_via[] = {
+	{PCI_VENDOR_ID_VIA, 0x3249, DEP, "VIA", "VT6421A"},
+
+	{},
+};
+
+static void atavia_chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr);
+static uint8_t atavia_chip_readb(const struct flashctx *flash, const chipaddr addr);
+static const struct par_programmer lpc_programmer_atavia = {
+		.chip_readb		= atavia_chip_readb,
+		.chip_readw		= fallback_chip_readw,
+		.chip_readl		= fallback_chip_readl,
+		.chip_readn		= fallback_chip_readn,
+		.chip_writeb		= atavia_chip_writeb,
+		.chip_writew		= fallback_chip_writew,
+		.chip_writel		= fallback_chip_writel,
+		.chip_writen		= fallback_chip_writen,
+};
+
+static void *atavia_offset = NULL;
+struct pci_dev *dev = NULL;
+
+static void atavia_prettyprint_access(uint8_t access)
+{
+	uint8_t bmask = access & BROM_BYTE_ENABLE_MASK;
+	uint8_t size = access & BROM_SIZE_MASK;
+
+	msg_pspew("Accessing byte(s):%s%s%s%s\n",
+		  ((bmask & (1<<3)) == 0) ? " 3" : "",
+		  ((bmask & (1<<2)) == 0) ? " 2" : "",
+		  ((bmask & (1<<1)) == 0) ? " 1" : "",
+		  ((bmask & (1<<0)) == 0) ? " 0" : "");
+	if (size == BROM_SIZE_0K) {
+		msg_pspew("No ROM device found.\n");
+	} else
+		msg_pspew("ROM device with %s kB attached.\n",
+			  (size == BROM_SIZE_64K) ? ">=64" :
+			  (size == BROM_SIZE_32K) ? "32" : "16");
+	msg_pspew("Access is a %s.\n", (access & BROM_WRITE) ? "write" : "read");
+	msg_pspew("Device is %s.\n", (access & BROM_TRIGGER) ? "busy" : "ready");
+}
+
+static bool atavia_ready(struct pci_dev *pcidev_dev)
+{
+	int try;
+	uint8_t access, status;
+	bool ready = false;
+
+	for (try = 0; try < VIA_MAX_RETRIES; try++) {
+		access = pci_read_byte(pcidev_dev, BROM_ACCESS);
+		status = pci_read_byte(pcidev_dev, BROM_STATUS);
+		if (((access & BROM_TRIGGER) == 0) && (status & BROM_ERROR_STATUS) == 0) {
+			ready = true;
+			break;
+		} else {
+			programmer_delay(1);
+			continue;
+		}
+	}
+
+	msg_pdbg2("\n%s: %s after %d tries (access=0x%02x, status=0x%02x)\n",
+		  __func__, ready ? "suceeded" : "failed", try, access, status);
+	atavia_prettyprint_access(access);
+	return ready;
+}
+
+void *atavia_map(const char *descr, unsigned long phys_addr, size_t len)
+{
+	return (atavia_offset != 0) ? atavia_offset : (void *)phys_addr;
+}
+
+int atavia_init(void)
+{
+	char *arg = extract_programmer_param("offset");
+	if (arg) {
+		if (strlen(arg) == 0) {
+			msg_perr("Missing argument for offset.\n");
+			free(arg);
+			return ERROR_FATAL;
+		}
+		char *endptr;
+		atavia_offset = (void *)strtoul(arg, &endptr, 0);
+		if (*endptr) {
+			msg_perr("Error: Invalid offset specified: \"%s\".\n", arg);
+			free(arg);
+			return ERROR_FATAL;
+		}
+		msg_pinfo("Mapping addresses to base %p.\n", atavia_offset);
+	}
+	free(arg);
+
+	if (rget_io_perms())
+		return 1;
+
+	/* No need to check for errors, pcidev_init() will not return in case of errors. */
+	dev = pcidev_init(ata_via, PCI_ROM_ADDRESS); /* Acutally no BAR setup needed at all. */
+	if (!dev)
+		return 1;
+
+	/* Test if a flash chip is attached. */
+	pci_write_long(dev, PCI_ROM_ADDRESS, (uint32_t)PCI_ROM_ADDRESS_MASK);
+	programmer_delay(90);
+	uint32_t base = pci_read_long(dev, PCI_ROM_ADDRESS);
+	msg_pdbg2("BROM base=0x%08x\n", base);
+	if ((base & PCI_ROM_ADDRESS_MASK) == 0) {
+		msg_pwarn("Controller thinks there is no ROM attached.\n");
+	}
+
+	if (!atavia_ready(dev)) {
+		msg_perr("Controller not ready.\n");
+		return 1;
+	}
+
+	register_par_programmer(&lpc_programmer_atavia, BUS_LPC);
+
+	return 0;
+}
+
+static void atavia_chip_writeb(const struct flashctx *flash, uint8_t val, const chipaddr addr)
+{
+	msg_pspew("%s: 0x%02x to 0x%08lx.\n", __func__, val, addr);
+	pci_write_long(dev, BROM_ADDR, (addr & ~3));
+	pci_write_long(dev, BROM_DATA, val << BYTE_OFFSET(addr));
+	pci_write_byte(dev, BROM_ACCESS, BROM_TRIGGER | BROM_WRITE | ENABLE_BYTE(addr));
+
+	if (!atavia_ready(dev)) {
+		msg_perr("not ready after write\n");
+	}
+}
+
+static uint8_t atavia_chip_readb(const struct flashctx *flash, const chipaddr addr)
+{
+	pci_write_long(dev, BROM_ADDR, (addr & ~3));
+	pci_write_byte(dev, BROM_ACCESS, BROM_TRIGGER | ENABLE_BYTE(addr));
+
+	if (!atavia_ready(dev)) {
+		msg_perr("not ready after read\n");
+	}
+
+	uint8_t val = (pci_read_long(dev, BROM_DATA) >> BYTE_OFFSET(addr)) & 0xff;
+	msg_pspew("%s: 0x%02x from 0x%08lx.\n", __func__, val, addr);
+	return val;
+}
diff --git a/flashrom.8.tmpl b/flashrom.8.tmpl
index fb18c04..ed0160b 100644
--- a/flashrom.8.tmpl
+++ b/flashrom.8.tmpl
@@ -192,6 +192,8 @@
 .sp
 .BR "* atahpt" " (for flash ROMs on Highpoint ATA/RAID controllers)"
 .sp
+.BR "* atavia" " (for flash ROMs on VIA VT6421A ATA controllers)"
+.sp
 .BR "* ft2232_spi" " (for SPI flash ROMs attached to an FT2232/FT4232H/FT232H family \
 based USB SPI programmer), including the DLP Design DLP-USB1232H, \
 FTDI FT2232H Mini-Module, FTDI FT4232H Mini-Module, openbiosprog-spi, Amontec \
@@ -587,9 +589,9 @@
 .B content
 is an 8-bit hexadecimal value.
 .SS
-.BR "nic3com" , " nicrealtek" , " nicnatsemi" , " nicintel\
-" , " nicintel_spi" , " gfxnvidia" , " ogp_spi" , " drkaiser" , " satasii\
-" , " satamv" ", and " atahpt " programmers
+.BR "nic3com" , " nicrealtek" , " nicnatsemi" , " nicintel"\
+, " nicintel_spi" , " gfxnvidia" , " ogp_spi" , " drkaiser" , " satasii"\
+, " satamv" , " atahpt" ", and " atavia " programmers
 These programmers have an option to specify the PCI address of the card
 your want to use, which must be specified if more than one card supported
 by the selected programmer is installed in your system. The syntax is
@@ -609,6 +611,18 @@
 Example:
 .B "flashrom \-p nic3com:pci=05:04.0"
 .SS
+.BR "atavia " programmer
+Due to the mysterious address handling of the VIA VT6421A controller the user can specify an offset with the
+.sp
+.B "  flashrom \-p atavia:offset=addr"
+.sp
+syntax where
+.B addr
+will be interpreted as usual (leading 0x (0) for hexadecimal (octal) values, or else decimal).
+For more information please see
+.nh
+.B http://flashrom.org/VT6421A
+.SS
 .BR "ft2232_spi " programmer
 An optional parameter specifies the controller
 type and channel/interface/port it should support. For that you have to use the
@@ -891,6 +905,9 @@
 needs raw memory access, PCI configuration space access, raw I/O port
 access (x86) and MSR access (x86).
 .sp
+.B atavia
+needs PCI configuration space access.
+.sp
 .BR nic3com ", " nicrealtek " and " nicnatsemi "
 need PCI configuration space read access and raw I/O port access.
 .sp
@@ -923,7 +940,7 @@
 needs no access permissions at all.
 .sp
 .BR internal ", " nic3com ", " nicrealtek ", " nicnatsemi ", "
-.BR gfxnvidia ", " drkaiser ", " satasii ", " satamv " and " atahpt
+.BR gfxnvidia ", " drkaiser ", " satasii ", " satamv ", " atahpt" and " atavia
 have to be run as superuser/root, and need additional raw access permission.
 .sp
 .BR serprog ", " buspirate_spi ", " dediprog ", " usbblaster_spi " and " ft2232_spi
diff --git a/flashrom.c b/flashrom.c
index 98101b7..8a2a5b1 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -172,6 +172,18 @@
 	},
 #endif
 
+#if CONFIG_ATAVIA == 1
+	{
+		.name			= "atavia",
+		.type			= PCI,
+		.devs.dev		= ata_via,
+		.init			= atavia_init,
+		.map_flash_region	= atavia_map,
+		.unmap_flash_region	= fallback_unmap,
+		.delay			= internal_delay,
+	},
+#endif
+
 #if CONFIG_FT2232_SPI == 1
 	{
 		.name			= "ft2232_spi",
diff --git a/programmer.h b/programmer.h
index b896ddf..02d0db8 100644
--- a/programmer.h
+++ b/programmer.h
@@ -54,6 +54,9 @@
 #if CONFIG_ATAHPT == 1
 	PROGRAMMER_ATAHPT,
 #endif
+#if CONFIG_ATAVIA == 1
+	PROGRAMMER_ATAVIA,
+#endif
 #if CONFIG_FT2232_SPI == 1
 	PROGRAMMER_FT2232_SPI,
 #endif
@@ -434,6 +437,13 @@
 extern const struct dev_entry ata_hpt[];
 #endif
 
+/* atavia.c */
+#if CONFIG_ATAVIA == 1
+int atavia_init(void);
+void *atavia_map(const char *descr, uintptr_t phys_addr, size_t len);
+extern const struct dev_entry ata_via[];
+#endif
+
 /* ft2232_spi.c */
 #if CONFIG_FT2232_SPI == 1
 int ft2232_spi_init(void);