coreboot-kgpe-d16/src/southbridge/intel/i82801gx/bootblock.c

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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 Sven Schnelle <svens@stackframe.org>
*
* 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
Remove address from GPLv2 headers As per discussion with lawyers[tm], it's not a good idea to shorten the license header too much - not for legal reasons but because there are tools that look for them, and giving them a standard pattern simplifies things. However, we got confirmation that we don't have to update every file ever added to coreboot whenever the FSF gets a new lease, but can drop the address instead. util/kconfig is excluded because that's imported code that we may want to synchronize every now and then. $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *MA[, ]*02110-1301[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 59 Temple Place[-, ]*Suite 330, Boston, MA *02111-1307[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.:Foundation, Inc.:" {} + $ find * -type f -a \! -name \*.patch \ -a \! -name \*_shipped \ -a \! -name LICENSE_GPL \ -a \! -name LGPL.txt \ -a \! -name COPYING \ -a \! -name DISCLAIMER \ -exec sed -i "/Foundation, Inc./ N;s:Foundation, Inc.* USA\.* *:Foundation, Inc. :;s:Foundation, Inc. $:Foundation, Inc.:" {} + Change-Id: Icc968a5a5f3a5df8d32b940f9cdb35350654bef9 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/9233 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
2015-03-26 15:17:45 +01:00
* Foundation, Inc.
*/
#include <arch/io.h>
#include <cpu/x86/tsc.h>
#include "i82801gx.h"
static void store_initial_timestamp(void)
{
/* On i945/ICH7 we have two 32bit scratchpad registers available:
* D0:F0 0xdc (SKPAD)
* D31:F2 0xd0 (SATA SP)
*/
tsc_t tsc = rdtsc();
pci_write_config32(PCI_DEV(0, 0x00, 0), 0xdc, tsc.lo);
pci_write_config32(PCI_DEV(0, 0x1f, 2), 0xd0, tsc.hi);
}
static void enable_spi_prefetch(void)
{
u8 reg8;
pci_devfn_t dev;
dev = PCI_DEV(0, 0x1f, 0);
reg8 = pci_read_config8(dev, 0xdc);
reg8 &= ~(3 << 2);
reg8 |= (2 << 2); /* Prefetching and Caching Enabled */
pci_write_config8(dev, 0xdc, reg8);
}
static void bootblock_southbridge_init(void)
{
#if CONFIG_COLLECT_TIMESTAMPS
store_initial_timestamp();
#endif
enable_spi_prefetch();
/* Enable RCBA */
pci_write_config32(PCI_DEV(0, 0x1f, 0), RCBA, (uintptr_t)DEFAULT_RCBA | 1);
/* Enable upper 128bytes of CMOS */
RCBA32(0x3400) = (1 << 2);
}