blob: 4b9061e8005c622e5377c928d59afe45c0b949b5 [file] [log] [blame]
/*
* 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.
*/
#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)
{
pci_devfn_t usb0 = PCH_EHCI1_DEV;
pci_devfn_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);
}