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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2004 Tyan Computer
* Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer.
* Copyright (C) 2006,2007 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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>
#if CONFIG_HT_CHAIN_END_UNITID_BASE != 0x20
#define CK804_DEVN_BASE CONFIG_HT_CHAIN_END_UNITID_BASE
#else
#define CK804_DEVN_BASE CONFIG_HT_CHAIN_UNITID_BASE
#endif
#define EHCI_BAR 0xFEF00000 /* EHCI BAR address */
#define EHCI_BAR_INDEX 0x10
#define EHCI_DEBUG_OFFSET 0x98
void set_debug_port(unsigned int port)
{
u32 dword;
device_t dev = PCI_DEV(0, CK804_DEVN_BASE + 2, 1); /* USB EHCI */
/* Write the port number to 0x74[15:12]. */
dword = pci_read_config32(dev, 0x74);
dword &= ~(0xf << 12);
dword |= (port << 12);
pci_write_config32(dev, 0x74, dword);
}
static void ck804_enable_usbdebug(unsigned int port)
{
device_t dev = PCI_DEV(0, CK804_DEVN_BASE + 2, 1); /* USB EHCI */
/* Mark 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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