Add support for the VIA VT8237R southbridge.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: <corey.osgood@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2907 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 58 insertions, 0 deletions

diff --git a/src/southbridge/via/vt8237r/vt8237r_sata.c b/src/southbridge/via/vt8237r/vt8237r_sata.c
new file mode 100644
index 0000000000..fb54b5ca39
--- /dev/null
+++ b/src/southbridge/via/vt8237r/vt8237r_sata.c
@@ -0,0 +1,58 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2007 Rudolf Marek <r.marek@assembler.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License v2 as published by
+ * the Free Software Foundation.
+ *
+ * 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 <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/pci_ids.h>
+
+#define SATA_MISC_CTRL 0x45
+
+static void sata_init(struct device *dev)
+{
+	u8 reg;
+
+	printk_debug("Configuring VIA SATA controller\n");
+
+	/* Class IDE Disk */
+	reg = pci_read_config8(dev, SATA_MISC_CTRL);
+	reg &= 0x7f;		/* Sub Class Write Protect off */
+	pci_write_config8(dev, SATA_MISC_CTRL, reg);
+
+	/* Change the device class to SATA from RAID. */
+	pci_write_config8(dev, PCI_CLASS_DEVICE, 0x1);
+	reg |= 0x80;		/* Sub Class Write Protect on */
+	pci_write_config8(dev, SATA_MISC_CTRL, reg);
+}
+
+static struct device_operations sata_ops = {
+	.read_resources = pci_dev_read_resources,
+	.set_resources = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init = sata_init,
+	.enable = 0,
+	.ops_pci = 0,
+};
+
+static struct pci_driver northbridge_driver __pci_driver = {
+	.ops = &sata_ops,
+	.vendor = PCI_VENDOR_ID_VIA,
+	.device = PCI_DEVICE_ID_VIA_VT6420_SATA,
+};