src/mainboard/google/butterfly/romstage.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2007-2010 coresystems GmbH
 * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
 *
 * 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 <string.h>
#include <lib.h>
#include <timestamp.h>
#include <arch/byteorder.h>
#include <arch/io.h>
#include <device/pci_def.h>
#include <device/pnp_def.h>
#include <cpu/x86/lapic.h>
#include <pc80/mc146818rtc.h>
#include <arch/acpi.h>
#include <cbmem.h>
#include <console/console.h>
#include "northbridge/intel/sandybridge/sandybridge.h"
#include "northbridge/intel/sandybridge/raminit.h"
#include "southbridge/intel/bd82x6x/pch.h"
#include "southbridge/intel/bd82x6x/gpio.h"
#include <arch/cpu.h>
#include <cpu/x86/bist.h>
#include <cpu/x86/msr.h>
#include "gpio.h"
#if CONFIG_CHROMEOS
#include <vendorcode/google/chromeos/chromeos.h>
#endif
#include <cbfs.h>

static void pch_enable_lpc(void)
{
	/* EC Decode Range Port60/64 and Port62/66 */
	/* Enable EC and PS/2 Keyboard/Mouse*/
	pci_write_config16(PCH_LPC_DEV, LPC_EN, KBC_LPC_EN | MC_LPC_EN);

	/* EC Decode Range Port68/6C */
	pci_write_config32(PCH_LPC_DEV, LPC_GEN1_DEC, (0x68 & ~3) | 0x40001);

	/* EC Decode Range Port 380-387 */
	pci_write_config32(PCH_LPC_DEV, LPC_GEN2_DEC, 0x380 | 0x40001);

}

static void rcba_config(void)
{
	u32 reg32;

	/*
	 *             GFX    INTA -> PIRQA (MSI)
	 * D28IP_P1IP  WLAN   INTA -> PIRQB
	 * D28IP_P2IP  ETH0   INTB -> PIRQF
	 * D28IP_P3IP  SDCARD INTC -> PIRQD
	 * D29IP_E1P   EHCI1  INTA -> PIRQD
	 * D26IP_E2P   EHCI2  INTA -> PIRQF
	 * D31IP_SIP   SATA   INTA -> PIRQB (MSI)
	 * D31IP_SMIP  SMBUS  INTB -> PIRQH
	 * D31IP_TTIP  THRT   INTC -> PIRQA
	 * D27IP_ZIP   HDA    INTA -> PIRQA (MSI)
	 *
	 * Trackpad interrupt is edge triggered and cannot be shared.
	 * TRACKPAD                -> PIRQG

	 */

	/* Device interrupt pin register (board specific) */
	RCBA32(D31IP) = (INTC << D31IP_TTIP) | (NOINT << D31IP_SIP2) |
			(INTB << D31IP_SMIP) | (INTA << D31IP_SIP);
	RCBA32(D29IP) = (INTA << D29IP_E1P);
	RCBA32(D28IP) = (INTA << D28IP_P1IP) | (INTB << D28IP_P2IP) |
			(INTC << D28IP_P3IP);
	RCBA32(D27IP) = (INTA << D27IP_ZIP);
	RCBA32(D26IP) = (INTA << D26IP_E2P);
	RCBA32(D25IP) = (NOINT << D25IP_LIP);
	RCBA32(D22IP) = (NOINT << D22IP_MEI1IP);

	/* Device interrupt route registers */
	DIR_ROUTE(D31IR, PIRQB, PIRQH, PIRQA, PIRQC);
	DIR_ROUTE(D29IR, PIRQD, PIRQE, PIRQF, PIRQG);
	DIR_ROUTE(D28IR, PIRQB, PIRQF, PIRQD, PIRQE);
	DIR_ROUTE(D27IR, PIRQA, PIRQH, PIRQA, PIRQB);
	DIR_ROUTE(D26IR, PIRQF, PIRQE, PIRQG, PIRQH);
	DIR_ROUTE(D25IR, PIRQA, PIRQB, PIRQC, PIRQD);
	DIR_ROUTE(D22IR, PIRQA, PIRQB, PIRQC, PIRQD);

	/* Enable IOAPIC (generic) */
	RCBA16(OIC) = 0x0100;
	/* PCH BWG says to read back the IOAPIC enable register */
	(void) RCBA16(OIC);

	/* Disable unused devices (board specific) */
	reg32 = RCBA32(FD);
	reg32 |= PCH_DISABLE_ALWAYS;
	/* Disable PCI bridge so MRC does not probe this bus */
	reg32 |= PCH_DISABLE_P2P;
	RCBA32(FD) = reg32;
}

#include <cpu/intel/romstage.h>
void main(unsigned long bist)
{
	int boot_mode = 0;
	int cbmem_was_initted;

	struct pei_data pei_data = {
		.pei_version = PEI_VERSION,
		.mchbar = DEFAULT_MCHBAR,
		.dmibar = DEFAULT_DMIBAR,
		.epbar = DEFAULT_EPBAR,
		.pciexbar = CONFIG_MMCONF_BASE_ADDRESS,
		.smbusbar = SMBUS_IO_BASE,
		.wdbbar = 0x4000000,
		.wdbsize = 0x1000,
		.hpet_address = CONFIG_HPET_ADDRESS,
		.rcba = DEFAULT_RCBABASE,
		.pmbase = DEFAULT_PMBASE,
		.gpiobase = DEFAULT_GPIOBASE,
		.thermalbase = 0xfed08000,
		.system_type = 0, // 0 Mobile, 1 Desktop/Server
		.tseg_size = CONFIG_SMM_TSEG_SIZE,
		.spd_addresses = { 0xA0, 0x00,0xA4,0x00 },
		.ts_addresses = { 0x00, 0x00, 0x00, 0x00 },
		.ec_present = 1,
		.ddr3lv_support = 0,
		// 0 = leave channel enabled
		// 1 = disable dimm 0 on channel
		// 2 = disable dimm 1 on channel
		// 3 = disable dimm 0+1 on channel
		.dimm_channel0_disabled = 2,
		.dimm_channel1_disabled = 2,
		.max_ddr3_freq = 1600,
		.usb_port_config = {
			 /* enabled   usb oc pin    length */
			{ 1, 0, 0x0040 }, /* P0: Right USB 3.0 #1 (no OC) */
			{ 1, 0, 0x0040 }, /* P1: Right USB 3.0 #2 (no OC) */
			{ 1, 0, 0x0040 }, /* P2: Camera (no OC) */
			{ 0, 0, 0x0000 }, /* P3: Empty */
			{ 0, 0, 0x0000 }, /* P4: Empty */
			{ 0, 0, 0x0000 }, /* P5: Empty */
			{ 0, 0, 0x0000 }, /* P6: Empty */
			{ 0, 0, 0x0000 }, /* P7: Empty */
			{ 0, 4, 0x0000 }, /* P8: Empty */
			{ 1, 4, 0x0080 }, /* P9: Left USB 1 (no OC) */
			{ 1, 4, 0x0040 }, /* P10: Mini PCIe - WLAN / BT (no OC) */
			{ 0, 4, 0x0000 }, /* P11: Empty */
			{ 0, 4, 0x0000 }, /* P12: Empty */
			{ 0, 4, 0x0000 }, /* P13: Empty */
		},
		.ddr_refresh_rate_config = 2, /* Force double refresh rate */
	};

	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(&butterfly_gpio_map);

	/* Initialize console device(s) */
	console_init();

	/* Halt if there was a built in self test failure */
	report_bist_failure(bist);

	if (MCHBAR16(SSKPD) == 0xCAFE) {
		printk(BIOS_DEBUG, "soft reset detected\n");
		boot_mode = 1;

		/* System is not happy after keyboard reset... */
		printk(BIOS_DEBUG, "Issuing CF9 warm reset\n");
		outb(0x6, 0xcf9);
		hlt();
	}

	/* 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");

	boot_mode = southbridge_detect_s3_resume() ? 2 : 0;

	post_code(0x38);
	/* Enable SPD ROMs and DDR-III DRAM */
	enable_smbus();

	/* Prepare USB controller early in S3 resume */
	if (boot_mode == 2)
		enable_usb_bar();

	post_code(0x39);

	post_code(0x3a);
	pei_data.boot_mode = boot_mode;
	timestamp_add_now(TS_BEFORE_INITRAM);
	sdram_initialize(&pei_data);

	timestamp_add_now(TS_AFTER_INITRAM);
	post_code(0x3c);

	rcba_config();
	post_code(0x3d);

	quick_ram_check();
	post_code(0x3e);

	cbmem_was_initted = !cbmem_recovery(boot_mode==2);
	if (boot_mode!=2)
		save_mrc_data(&pei_data);

	if (boot_mode==2 && !cbmem_was_initted) {
		/* Failed S3 resume, reset to come up cleanly */
		outb(0x6, 0xcf9);
		hlt();
	}
	northbridge_romstage_finalize(boot_mode==2);

	post_code(0x3f);
#if CONFIG_CHROMEOS
	init_chromeos(boot_mode);
#endif
	timestamp_add_now(TS_END_ROMSTAGE);
}