Add support for Intel Ibex Peak (Mobile 5) southbridge

Change-Id: If56f2cacc5f1b2ef9c7b6aea508d458a43dd1309
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/3397
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/src/southbridge/intel/ibexpeak/early_smbus.c b/src/southbridge/intel/ibexpeak/early_smbus.c
new file mode 100644
index 0000000000..d8aff926cc
--- /dev/null
+++ b/src/southbridge/intel/ibexpeak/early_smbus.c
@@ -0,0 +1,77 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 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; 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
+ */
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <device/pci_ids.h>
+#include <device/pci_def.h>
+#include "pch.h"
+#include "smbus.h"
+
+void enable_smbus(void)
+{
+	device_t dev;
+
+	/* Set the SMBus device statically. */
+	dev = PCI_DEV(0x0, 0x1f, 0x3);
+
+	/* Check to make sure we've got the right device. */
+	if (pci_read_config16(dev, 0x0) != 0x8086) {
+		die("SMBus controller not found!");
+	}
+
+	/* Set SMBus I/O base. */
+	pci_write_config32(dev, SMB_BASE,
+			   SMBUS_IO_BASE | PCI_BASE_ADDRESS_SPACE_IO);
+
+	/* Set SMBus enable. */
+	pci_write_config8(dev, HOSTC, HST_EN);
+
+	/* Set SMBus I/O space enable. */
+	pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_IO);
+
+	/* Disable interrupt generation. */
+	outb(0, SMBUS_IO_BASE + SMBHSTCTL);
+
+	/* Clear any lingering errors, so transactions can run. */
+	outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
+	print_debug("SMBus controller enabled.\n");
+}
+
+int smbus_read_byte(unsigned device, unsigned address)
+{
+	return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
+}
+
+int smbus_write_byte(unsigned device, unsigned address, u8 data)
+{
+  return do_smbus_write_byte(SMBUS_IO_BASE, device, address, data);
+}
+
+int smbus_block_read(unsigned device, unsigned cmd, u8 bytes, u8 *buf)
+{
+	return do_smbus_block_read(SMBUS_IO_BASE, device, cmd, bytes, buf);
+}
+
+int smbus_block_write(unsigned device, unsigned cmd, u8 bytes, const u8 *buf)
+{
+	return do_smbus_block_write(SMBUS_IO_BASE, device, cmd, bytes, buf);
+}
+