1 files changed, 66 insertions, 0 deletions
diff --git a/src/northbridge/intel/fsp_rangeley/acpi.c b/src/northbridge/intel/fsp_rangeley/acpi.c
new file mode 100644
index 0000000000..895f5b4861
--- /dev/null
+++ b/src/northbridge/intel/fsp_rangeley/acpi.c
@@ -0,0 +1,66 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ * Copyright (C) 2012 The Chromium OS Authors
+ * Copyright (C) 2013 Sage Electronic Engineering, LLC
+ *
+ * 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 <types.h>
+#include <string.h>
+#include <console/console.h>
+#include <arch/io.h>
+#include <arch/acpi.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <build.h>
+#include "northbridge.h"
+
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+	device_t dev;
+	u32 pciexbar = 0;
+	u32 pciexbar_reg;
+	int max_buses;
+	int pci_dev_id;
+
+	for (pci_dev_id = PCI_DEVICE_ID_RG_MIN; pci_dev_id <= PCI_DEVICE_ID_RG_MAX; pci_dev_id++) {
+		dev = dev_find_device(PCI_VENDOR_ID_INTEL, pci_dev_id, 0);
+		if (dev)
+			break;
+	}
+
+	if (!dev)
+		return current;
+
+	pciexbar_reg = sideband_read(B_UNIT, BECREG);
+
+	/* MMCFG not supported or not enabled. */
+	if (!(pciexbar_reg & (1 << 0)))
+		return current;
+
+	/* 256MB ECAM range */
+	pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28));
+	max_buses = 256;
+
+	current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current,
+			pciexbar, 0x0, 0x0, max_buses - 1);
+
+	return current;
+}