diff options
Diffstat (limited to 'src/southbridge/intel/fsp_rangeley/early_init.c')
-rw-r--r-- | src/southbridge/intel/fsp_rangeley/early_init.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/southbridge/intel/fsp_rangeley/early_init.c b/src/southbridge/intel/fsp_rangeley/early_init.c new file mode 100644 index 0000000000..0697785b21 --- /dev/null +++ b/src/southbridge/intel/fsp_rangeley/early_init.c @@ -0,0 +1,81 @@ +/* + * 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. + * + * 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 <stdlib.h> +#include <console/console.h> +#include <arch/io.h> +#include <device/pci_def.h> +#include <pc80/mc146818rtc.h> +#include <build.h> +#include <device/pci_def.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, 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(DEFAULT_PBASE + PMC_CFG, read8(DEFAULT_PBASE + PMC_CFG) | + NO_REBOOT); // disable reboot on timer trigger + outw(DEFAULT_ABASE + TCO1_CNT, inw(DEFAULT_ABASE + TCO1_CNT) | + TCO_TMR_HALT); // 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(pbase + GEN_PMCON1); + int rtc_failed = !!(gen_pmcon1 & RPS); + + if (rtc_failed) { + printk(BIOS_DEBUG, + "RTC Failure detected. Resetting Date to %x/%x/%x%x\n", + COREBOOT_BUILD_MONTH_BCD, + COREBOOT_BUILD_DAY_BCD, + 0x20, + COREBOOT_BUILD_YEAR_BCD); + + /* Clear the power failure flag */ + write32(DEFAULT_PBASE + GEN_PMCON1, gen_pmcon1 & ~RPS); + } + + rtc_init(rtc_failed); +} + +void rangeley_sb_early_initialization(void) +{ + /* Setup all BARs required for early PCIe and raminit */ + rangeley_setup_bars(); + + reset_rtc(); +} |