Revert "Remove sandybridge and ivybridge FSP code path"

Please don't remove chipsets and mainboards without discussion and input
from the owners. Someone was asking about cougar canyon 2 just a couple
of weeks ago - there's obviously still interest.

This reverts commit fb50124d22014742b6990a95df87a7a828e891b6.

Change-Id: Icd7dcea21fa4a7808b25bb8727020701aeebffc9
Signed-off-by: Martin Roth <martinroth@google.com>
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/12128
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/src/southbridge/intel/fsp_bd82x6x/early_usb.c b/src/southbridge/intel/fsp_bd82x6x/early_usb.c
new file mode 100644
index 0000000000..0533ae7477
--- /dev/null
+++ b/src/southbridge/intel/fsp_bd82x6x/early_usb.c
@@ -0,0 +1,56 @@
+/*
+ * 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.
+ */
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <device/pci_ids.h>
+#include <device/pci_def.h>
+#include "pch.h"
+
+#define PCH_EHCI1_TEMP_BAR0 0xe8000000
+#define PCH_EHCI2_TEMP_BAR0 0xe8000400
+
+/*
+ * Setup USB controller MMIO BAR to prevent the
+ * reference code from resetting the controller.
+ *
+ * The BAR will be re-assigned during device
+ * enumeration so these are only temporary.
+ */
+void enable_usb_bar(void)
+{
+	device_t usb0 = PCH_EHCI1_DEV;
+	device_t usb1 = PCH_EHCI2_DEV;
+	u32 cmd;
+
+	/* USB Controller 1 */
+	pci_write_config32(usb0, PCI_BASE_ADDRESS_0,
+			   PCH_EHCI1_TEMP_BAR0);
+	cmd = pci_read_config32(usb0, PCI_COMMAND);
+	cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+	pci_write_config32(usb0, PCI_COMMAND, cmd);
+
+	/* USB Controller 2 */
+	pci_write_config32(usb1, PCI_BASE_ADDRESS_0,
+			   PCH_EHCI2_TEMP_BAR0);
+	cmd = pci_read_config32(usb1, PCI_COMMAND);
+	cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+	pci_write_config32(usb1, PCI_COMMAND, cmd);
+}