Support for the Intel ICH7 southbridge.
This includes an early SMI handler.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3701 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/src/southbridge/intel/i82801gx/i82801gx_smbus.c b/src/southbridge/intel/i82801gx/i82801gx_smbus.c
new file mode 100644
index 0000000..1f609f0
--- /dev/null
+++ b/src/southbridge/intel/i82801gx/i82801gx_smbus.c
@@ -0,0 +1,59 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * 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 <stdint.h>
+#include <smbus.h>
+#include <pci.h>
+#include <arch/io.h>
+#include "i82801gx.h"
+#include "i82801_smbus.h"
+
+static int smbus_read_byte(struct bus *bus, device_t dev, u8 address)
+{
+ u16 device;
+ struct resource *res;
+
+ device = dev->path.u.i2c.device;
+ res = find_resource(bus->dev, 0x20);
+
+ return do_smbus_read_byte(res->base, device, address);
+}
+
+static struct smbus_bus_operations lops_smbus_bus = {
+ .read_byte = smbus_read_byte,
+};
+
+static struct device_operations smbus_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .init = 0,
+ .scan_bus = scan_static_bus,
+ .enable = i82801gx_enable,
+ .ops_smbus_bus = &lops_smbus_bus,
+};
+
+/* 82801GB/GR/GDH/GBM/GHM/GU (ICH7/ICH7R/ICH7DH/ICH7-M/ICH7-M DH/ICH7-U) */
+static const struct pci_driver i82801gx_smbus __pci_driver = {
+ .ops = &smbus_ops,
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_82801GB_SMB,
+};
+