X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fsouthbridge%2Fbroadcom%2Fbcm5785%2Fenable_rom.c;fp=src%2Fsouthbridge%2Fbroadcom%2Fbcm5785%2Fenable_rom.c;h=1cd28498b9a97d8b6c341737bb8db23edaa4def0;hb=836ae29ee325b1e3d28ff59468cc50913b1e24ce;hp=0000000000000000000000000000000000000000;hpb=1bc5ccac51d94cfb4f9666ecf2cac619d8dc80a6;p=coreboot.git

diff --git a/src/southbridge/broadcom/bcm5785/enable_rom.c b/src/southbridge/broadcom/bcm5785/enable_rom.c
new file mode 100644
index 000000000..1cd28498b
--- /dev/null
+++ b/src/southbridge/broadcom/bcm5785/enable_rom.c
@@ -0,0 +1,39 @@
+/*
+ * 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 <stdint.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+#include <device/pci_ids.h>
+
+/* Enable 4MB ROM access at 0xFFC00000 - 0xFFFFFFFF. */
+static void bcm5785_enable_rom(void)
+{
+	u8 byte;
+	device_t dev;
+
+	dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_SERVERWORKS,
+			PCI_DEVICE_ID_SERVERWORKS_BCM5785_SB_PCI_MAIN), 0);
+
+	/* Set the 4MB enable bits. */
+	byte = pci_read_config8(dev, 0x41);
+	byte |= 0x0e;
+	pci_write_config8(dev, 0x41, byte);
+}