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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007-2010 coresystems GmbH
* Copyright (C) 2011 Google Inc
* Copyright (C) 2013-2014 Sage Electronic Engineering, LLC.
*
* 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.
*/
#include <stdint.h>
#include <stdlib.h>
#include <console/console.h>
#include <arch/io.h>
#include <device/mmio.h>
#include <device/pci_ops.h>
#include <device/pci_def.h>
#include <pc80/mc146818rtc.h>
#include <version.h>
#include "pci_devs.h"
#include "soc.h"
static void rangeley_setup_bars(void)
{
/* Setting up Southbridge. */
printk(BIOS_DEBUG, "Setting up static southbridge registers...");
pci_write_config32(LPC_BDF, RCBA, (uintptr_t)DEFAULT_RCBA | RCBA_ENABLE);
pci_write_config32(LPC_BDF, ABASE, DEFAULT_ABASE | SET_BAR_ENABLE);
pci_write_config32(LPC_BDF, PBASE, DEFAULT_PBASE | SET_BAR_ENABLE);
printk(BIOS_DEBUG, " done.\n");
printk(BIOS_DEBUG, "Disabling Watchdog timer...");
/* Disable the watchdog reboot and turn off the watchdog timer */
write8((void *)(DEFAULT_PBASE + PMC_CFG),
read8((void *)(DEFAULT_PBASE + PMC_CFG)) | NO_REBOOT); // disable reboot on timer trigger
outw(inw(DEFAULT_ABASE + TCO1_CNT) | TCO_TMR_HALT,
DEFAULT_ABASE + TCO1_CNT); // disable watchdog timer
printk(BIOS_DEBUG, " done.\n");
}
static void reset_rtc(void)
{
uint32_t pbase = pci_read_config32(LPC_BDF, PBASE) &
0xfffffff0;
uint32_t gen_pmcon1 = read32((void *)(pbase + GEN_PMCON1));
int rtc_failed = !!(gen_pmcon1 & RPS);
if (rtc_failed) {
printk(BIOS_DEBUG,
"RTC Failure detected. Resetting Date to %s\n",
coreboot_dmi_date);
/* Clear the power failure flag */
write32((void *)(DEFAULT_PBASE + GEN_PMCON1),
gen_pmcon1 & ~RPS);
}
cmos_init(rtc_failed);
}
void rangeley_sb_early_initialization(void)
{
/* Setup all BARs required for early PCIe and raminit */
rangeley_setup_bars();
reset_rtc();
}
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