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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008 Arastra, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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.
*
*/
static void i3100_enable_superio(void)
{
device_t dev = PCI_DEV(0x0, 0x1f, 0x0);
/* Enable decoding of I/O locations for SuperIO devices */
pci_write_config16(dev, 0x80, 0x0010);
pci_write_config16(dev, 0x82, 0x340f);
/* Enable the SERIRQs (start pulse width is 8 clock cycles) */
pci_write_config8(dev, 0x64, 0xD2);
}
static void i3100_halt_tco_timer(void)
{
device_t dev = PCI_DEV(0x0, 0x1f, 0x0);
/* Temporarily enable the ACPI I/O range at 0x4000 */
pci_write_config32(dev, 0x40, 0x4000 | (1 << 0));
pci_write_config32(dev, 0x44, pci_read_config32(dev, 0x44) | (1 << 7));
/* Halt the TCO timer, preventing SMI and automatic reboot */
outw(inw(0x4068) | (1 << 11), 0x4068);
/* Disable the ACPI I/O range */
pci_write_config32(dev, 0x44, pci_read_config32(dev, 0x44) & ~(1 << 7));
}
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