/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2015  Damien Zammit <damien@zamaudio.com>
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 <device/pci_def.h>
#include <arch/io.h>
#include <device/pnp_def.h>
#include <console/console.h>
#include <southbridge/intel/i82801gx/i82801gx.h>
#include <northbridge/intel/pineview/raminit.h>
#include <northbridge/intel/pineview/pineview.h>
#include <cpu/x86/bist.h>
#include <cpu/x86/lapic.h>
#include <superio/winbond/w83627thg/w83627thg.h>
#include <superio/winbond/common/winbond.h>
#include <lib.h>
#include <arch/stages.h>

#define SERIAL_DEV PNP_DEV(0x4e, W83627THG_SP1)
#define SUPERIO_DEV PNP_DEV(0x4e, 0)

#include <cpu/intel/romstage.h>

/* Early mainboard specific GPIO setup */
static void mb_gpio_init(void)
{
	device_t dev;

	/* Southbridge GPIOs. */
	dev = PCI_DEV(0x0, 0x1f, 0x0);

	/* Set the value for GPIO base address register and enable GPIO. */
	pci_write_config32(dev, GPIO_BASE, (DEFAULT_GPIOBASE | 1));
	pci_write_config8(dev, GPIO_CNTL, 0x10);

	outl(0x1ff9f7c1, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
	outl(0xe0e9e803, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
	outl(0xece9e842, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
	outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
	outl(0x00002000, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
	outl(0x000000fe, DEFAULT_GPIOBASE + 0x30);
	outl(0x0000007e, DEFAULT_GPIOBASE + 0x34);
	outl(0x000300f3, DEFAULT_GPIOBASE + 0x38);
}

static void nm10_enable_lpc(void)
{
	/* Disable Serial IRQ */
	pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0x00);
	/* Decode range */
	pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80,
		pci_read_config16(PCI_DEV(0, 0x1f, 0), 0x80) | 0x0010);
	pci_write_config16(PCI_DEV(0, 0x1f, 0), LPC_EN,
		CNF1_LPC_EN | CNF2_LPC_EN | KBC_LPC_EN | COMA_LPC_EN | COMB_LPC_EN);

	pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x88, 0x0291);
	pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x8a, 0x007c);
}

static void rcba_config(void)
{
	/* Set up virtual channel 0 */
	RCBA32(0x0014) = 0x80000001;
	RCBA32(0x001c) = 0x03128010;

	/* Device 1f interrupt pin register */
	RCBA32(0x3100) = 0x00042210;
	RCBA32(0x3108) = 0x10004321;

	RCBA32(0x3104) = 0x00002100;

	/* PCIe Interrupts */
	RCBA32(0x310c) = 0x00214321;
	/* HD Audio Interrupt */
	RCBA32(0x3110) = 0x00000001;

	/* dev irq route register */
	RCBA16(0x3140) = 0x0132;
	RCBA16(0x3142) = 0x0146;
	RCBA16(0x3144) = 0x0237;
	RCBA16(0x3146) = 0x3201;
	RCBA16(0x3148) = 0x0146;

	/* Enable IOAPIC */
	RCBA8(0x31ff) = 0x03;

	RCBA32(0x3418) = 0x003000e2;
	RCBA32(0x3418) |= 1;
}

void main(unsigned long bist)
{
	const u8 spd_addrmap[4] = { 0x50, 0x51, 0, 0 };

	if (bist == 0)
		enable_lapic();

	/* Disable watchdog timer */
	RCBA32(0x3410) = RCBA32(0x3410) | 0x20;

	/* Set southbridge and Super I/O GPIOs. */
	mb_gpio_init();

	nm10_enable_lpc();
	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
	console_init();

	report_bist_failure(bist);
	enable_smbus();

	pineview_early_initialization();

	post_code(0x30);

	printk(BIOS_DEBUG, "Initializing memory\n");
	sdram_initialize(0, spd_addrmap);
	printk(BIOS_DEBUG, "Memory initialized\n");

	post_code(0x31);
	ram_check(0x200000,0x300000);

	rcba_config();
}