diff options
Diffstat (limited to 'src/northbridge/intel/sandybridge/romstage.c')
-rw-r--r-- | src/northbridge/intel/sandybridge/romstage.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/src/northbridge/intel/sandybridge/romstage.c b/src/northbridge/intel/sandybridge/romstage.c new file mode 100644 index 0000000000..a18c480d3c --- /dev/null +++ b/src/northbridge/intel/sandybridge/romstage.c @@ -0,0 +1,138 @@ +/* + * 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. + * + * 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. + */ + +#include <stdint.h> +#include <string.h> +#include <console/console.h> +#include <arch/io.h> +#include <lib.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 <halt.h> +#include <tpm.h> +#include "raminit_native.h" +#include <northbridge/intel/sandybridge/chip.h> +#include "southbridge/intel/bd82x6x/pch.h" +#include "southbridge/intel/bd82x6x/gpio.h" + +#define HOST_BRIDGE PCI_DEVFN(0, 0) +#define DEFAULT_TCK TCK_800MHZ + +static unsigned int get_mem_min_tck(void) +{ + const struct device *dev; + const struct northbridge_intel_sandybridge_config *cfg; + + dev = dev_find_slot(0, HOST_BRIDGE); + if (!(dev && dev->chip_info)) + return DEFAULT_TCK; + + cfg = dev->chip_info; + + /* If this is zero, it just means devicetree.cb didn't set it */ + if (cfg->max_mem_clock_mhz == 0) + return DEFAULT_TCK; + + if (cfg->max_mem_clock_mhz >= 800) + return TCK_800MHZ; + else if (cfg->max_mem_clock_mhz >= 666) + return TCK_666MHZ; + else if (cfg->max_mem_clock_mhz >= 533) + return TCK_533MHZ; + else + return TCK_400MHZ; +} + +void main(unsigned long bist) +{ + int s3resume = 0; + spd_raw_data spd[4]; + + if (MCHBAR16(SSKPD) == 0xCAFE) { + outb(0x6, 0xcf9); + halt (); + } + + timestamp_init(get_initial_timestamp()); + timestamp_add_now(TS_START_ROMSTAGE); + + if (bist == 0) + enable_lapic(); + + pch_enable_lpc(); + + /* Enable GPIOs */ + pci_write_config32(PCH_LPC_DEV, GPIO_BASE, DEFAULT_GPIOBASE|1); + pci_write_config8(PCH_LPC_DEV, GPIO_CNTL, 0x10); + + setup_pch_gpios(&mainboard_gpio_map); + + 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(SANDYBRIDGE_MOBILE); + printk(BIOS_DEBUG, "Back from sandybridge_early_initialization()\n"); + + s3resume = southbridge_detect_s3_resume(); + + post_code(0x38); + /* Enable SPD ROMs and DDR-III DRAM */ + enable_smbus(); + + post_code(0x39); + + post_code(0x3a); + + memset (spd, 0, sizeof (spd)); + mainboard_get_spd(spd); + + timestamp_add_now(TS_BEFORE_INITRAM); + + init_dram_ddr3(spd, 1, get_mem_min_tck(), s3resume); + + timestamp_add_now(TS_AFTER_INITRAM); + post_code(0x3c); + + southbridge_configure_default_intmap(); + rcba_config(); + post_code(0x3d); + + northbridge_romstage_finalize(s3resume); + +#if CONFIG_LPC_TPM + init_tpm(s3resume); +#endif + + post_code(0x3f); +} |