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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* 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 <usbdebug.h>
#include <device/pci_def.h>
#define EHCI_BAR 0xFEF00000 /* EHCI BAR address */
#define EHCI_BAR_INDEX 0x10 /* TODO: DBUG_PRT[31:29] */
#define EHCI_DEBUG_OFFSET 0xE0 /* Hardcoded to 0xE0 */
/* Required for successful build, but currently empty. */
void set_debug_port(unsigned int port)
{
/* TODO: Allow changing the physical USB port used as Debug Port. */
}
static void sb600_enable_usbdebug(unsigned int port)
{
device_t dev = PCI_DEV(0, 0x13, 5); /* USB EHCI, D19:F5 */
/* Select the requested physical USB port (1-15) as the Debug Port. */
set_debug_port(port);
/* Set the EHCI BAR address. */
pci_write_config32(dev, EHCI_BAR_INDEX, EHCI_BAR);
/* Enable access to the EHCI memory space registers. */
pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);
}
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