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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2010 - 2011 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 <reset.h> /* hard_reset, soft_rest*/
#include <arch/io.h> /* inb, outb */
#include <arch/romcc_io.h> /* pci_read_config32, device_t, PCI_DEV */
#define HT_INIT_CONTROL 0x6C
#define HTIC_BIOSR_Detect (1<<5)
#if CONFIG_MAX_PHYSICAL_CPUS > 32
#define NODE_PCI(x, fn) ((x<32)?(PCI_DEV(CONFIG_CBB,(CONFIG_CDB+x),fn)):(PCI_DEV((CONFIG_CBB-1),(CONFIG_CDB+x-32),fn)))
#else
#define NODE_PCI(x, fn) PCI_DEV(CONFIG_CBB,(CONFIG_CDB+x),fn)
#endif
static void set_bios_reset(void)
{
u32 nodes;
u32 htic;
device_t dev;
int i;
nodes = ((pci_read_config32(PCI_DEV(CONFIG_CBB, CONFIG_CDB, 0), 0x60) >> 4) & 7) + 1;
for(i = 0; i < nodes; i++) {
dev = NODE_PCI(i, 0);
htic = pci_read_config32(dev, HT_INIT_CONTROL);
htic &= ~HTIC_BIOSR_Detect;
pci_write_config32(dev, HT_INIT_CONTROL, htic);
}
}
void hard_reset(void)
{
set_bios_reset();
/* Try rebooting through port 0xcf9 */
/* Actually it is not a real hard_reset
* --- it only reset coherent link table, but not reset link freq and width
*/
outb((0 << 3) | (0 << 2) | (1 << 1), 0xcf9);
outb((0 << 3) | (1 << 2) | (1 << 1), 0xcf9);
}
void soft_reset(void)
{
set_bios_reset();
/* link reset */
outb(0x06, 0x0cf9);
}
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