| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2010 coresystems GmbH |
| * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. |
| * Copyright (C) 2014 Vladimir Serbinenko |
| * |
| * 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 <console/console.h> |
| #include <arch/io.h> |
| #include <device/pci_ops.h> |
| #include <cpu/x86/lapic.h> |
| #include <timestamp.h> |
| #include "sandybridge.h" |
| #include <cpu/x86/bist.h> |
| #include <cpu/intel/romstage.h> |
| #include <device/pci_def.h> |
| #include <device/device.h> |
| #include <northbridge/intel/sandybridge/chip.h> |
| #include <southbridge/intel/bd82x6x/pch.h> |
| #include <southbridge/intel/common/pmclib.h> |
| |
| static void early_pch_reset_pmcon(void) |
| { |
| u8 reg8; |
| |
| // reset rtc power status |
| reg8 = pci_read_config8(PCH_LPC_DEV, GEN_PMCON_3); |
| reg8 &= ~(1 << 2); |
| pci_write_config8(PCH_LPC_DEV, GEN_PMCON_3, reg8); |
| } |
| |
| /* Platform has no romstage entry point under mainboard directory, |
| * so this one is named with prefix mainboard. |
| */ |
| void mainboard_romstage_entry(unsigned long bist) |
| { |
| int s3resume = 0; |
| |
| if (MCHBAR16(SSKPD) == 0xCAFE) { |
| outb(0x6, 0xcf9); |
| halt (); |
| } |
| |
| if (bist == 0) |
| enable_lapic(); |
| |
| /* Init LPC, GPIO, BARs, disable watchdog ... */ |
| early_pch_init(); |
| |
| /* Initialize superio */ |
| mainboard_config_superio(); |
| |
| /* USB is initialized in MRC if MRC is used. */ |
| if (CONFIG(USE_NATIVE_RAMINIT)) { |
| early_usb_init(mainboard_usb_ports); |
| } |
| |
| /* Initialize console device(s) */ |
| console_init(); |
| |
| /* Halt if there was a built in self test failure */ |
| report_bist_failure(bist); |
| |
| /* Perform some early chipset initialization required |
| * before RAM initialization can work |
| */ |
| sandybridge_early_initialization(); |
| printk(BIOS_DEBUG, "Back from sandybridge_early_initialization()\n"); |
| |
| s3resume = southbridge_detect_s3_resume(); |
| |
| post_code(0x38); |
| |
| mainboard_early_init(s3resume); |
| |
| /* Enable SPD ROMs and DDR-III DRAM */ |
| enable_smbus(); |
| |
| post_code(0x39); |
| |
| perform_raminit(s3resume); |
| |
| timestamp_add_now(TS_AFTER_INITRAM); |
| |
| post_code(0x3b); |
| /* Perform some initialization that must run before stage2 */ |
| early_pch_reset_pmcon(); |
| post_code(0x3c); |
| |
| southbridge_configure_default_intmap(); |
| southbridge_rcba_config(); |
| mainboard_rcba_config(); |
| |
| post_code(0x3d); |
| |
| northbridge_romstage_finalize(s3resume); |
| |
| post_code(0x3f); |
| } |