1 files changed, 61 insertions, 0 deletions
diff --git a/src/southbridge/broadcom/bcm5785/early_smbus.c b/src/southbridge/broadcom/bcm5785/early_smbus.c
new file mode 100644
index 0000000000..f235e58888
--- /dev/null
+++ b/src/southbridge/broadcom/bcm5785/early_smbus.c
@@ -0,0 +1,61 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2005 AMD
+ * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
+ *
+ * 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 "smbus.h"
+
+#define SMBUS_IO_BASE 0x1000
+
+static void enable_smbus(void)
+{
+	device_t dev;
+	dev = pci_locate_device(PCI_ID(0x1166, 0x0205), 0); // 0x0201?
+
+	if (dev == PCI_DEV_INVALID) {
+		die("SMBUS controller not found\n");
+	}
+
+	print_debug("SMBus controller enabled\n");
+	/* set smbus iobase */
+	pci_write_config32(dev, 0x90, SMBUS_IO_BASE | 1);
+	/* Set smbus iospace enable */
+	pci_write_config8(dev, 0xd2, 0x03);
+	/* clear any lingering errors, so the transaction will run */
+	outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
+}
+
+static inline int smbus_recv_byte(unsigned device)
+{
+        return do_smbus_recv_byte(SMBUS_IO_BASE, device);
+}
+
+static inline int smbus_send_byte(unsigned device, unsigned char val)
+{
+        return do_smbus_send_byte(SMBUS_IO_BASE, device, val);
+}
+
+static inline int smbus_read_byte(unsigned device, unsigned address)
+{
+        return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
+}
+
+static inline int smbus_write_byte(unsigned device, unsigned address, unsigned char val)
+{
+        return do_smbus_write_byte(SMBUS_IO_BASE, device, address, val);
+}