/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2007-2009 coresystems GmbH
 * Copyright (C) 2011 Sven Schnelle <svens@stackframe.org>
 *
 * 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 <console/console.h>
#include <device/device.h>
#include <arch/io.h>
#include <delay.h>
#include <string.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <arch/io.h>
#include <ec/lenovo/pmh7/pmh7.h>
#include <ec/acpi/ec.h>
#include <ec/lenovo/h8/h8.h>
#include <northbridge/intel/i945/i945.h>
#include <pc80/mc146818rtc.h>
#include <arch/x86/include/arch/acpigen.h>
#include <arch/interrupt.h>
#include <smbios.h>
#include <build.h>
#include <x86emu/x86emu.h>
#define PANEL INT15_5F35_CL_DISPLAY_DEFAULT

static acpi_cstate_t cst_entries[] = {
	{ 1,  1, 1000, { 0x7f, 1, 2, { 0 }, 1, 0 } },
	{ 2,  1,  500, { 0x01, 8, 0, { 0 }, DEFAULT_PMBASE + LV2, 0 } },
	{ 2, 17,  250, { 0x01, 8, 0, { 0 }, DEFAULT_PMBASE + LV3, 0 } },
};

#if CONFIG_PCI_OPTION_ROM_RUN_YABEL || CONFIG_PCI_OPTION_ROM_RUN_REALMODE
static int int15_handler(void)
{
	/* The right way to do this is to move this handler code into
	 * the mainboard or northbridge code.
	 * TODO: completely move to mainboards / chipsets.
	 */
	printk(BIOS_DEBUG, "%s: AX=%04x BX=%04x CX=%04x DX=%04x\n",
	       __func__, X86_AX, X86_BX, X86_CX, X86_DX);

	switch (X86_AX) {
	case 0x5f35: /* Boot Display */
		X86_AX = 0x005f; // Success
		X86_CL = PANEL;
		break;
	case 0x5f40: /* Boot Panel Type */
		X86_AX = 0x005f; // Success
		X86_CL = 3;
		printk(BIOS_DEBUG, "DISPLAY=%x\n", X86_CL);
		break;
	default:
		/* Interrupt was not handled */
		printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", X86_AX);
		return 0;
	}

	/* Interrupt handled */
	return 1;
}
#endif

int get_cst_entries(acpi_cstate_t **entries)
{
	*entries = cst_entries;
	return ARRAY_SIZE(cst_entries);
}

const char *smbios_mainboard_bios_version(void)
{
	/* Satisfy thinkpad_acpi.  */
	if (strlen(CONFIG_LOCALVERSION))
		return "CBET4000 " CONFIG_LOCALVERSION;
	else
		return "CBET4000 " COREBOOT_VERSION;
}

static void mainboard_init(device_t dev)
{
	struct southbridge_intel_i82801gx_config *config;
	device_t dev0, idedev;

#if CONFIG_PCI_OPTION_ROM_RUN_YABEL || CONFIG_PCI_OPTION_ROM_RUN_REALMODE
	/* Install custom int15 handler for VGA OPROM */
	mainboard_interrupt_handlers(0x15, &int15_handler);
#endif

	/* If we're resuming from suspend, blink suspend LED */
	dev0 = dev_find_slot(0, PCI_DEVFN(0,0));
	if (dev0 && pci_read_config32(dev0, SKPAD) == SKPAD_ACPI_S3_MAGIC)
		ec_write(0x0c, 0xc7);

	idedev = dev_find_slot(0, PCI_DEVFN(0x1f,1));

	if (!(inb(DEFAULT_GPIOBASE + 0x0c) & 0x40)) {
		/* legacy I/O connected */
		pmh7_ultrabay_power_enable(1);
		ec_write(0x0c, 0x84);
	} else if (idedev && idedev->chip_info &&
		   h8_ultrabay_device_present()) {
		config = idedev->chip_info;
		config->ide_enable_primary = 1;
		pmh7_ultrabay_power_enable(1);
		ec_write(0x0c, 0x84);
	} else {
		pmh7_ultrabay_power_enable(0);
		ec_write(0x0c, 0x04);
	}

	/* set dock status led */
	ec_write(0x0c, 0x08);
	ec_write(0x0c, inb(0x164c) & 8 ? 0x89 : 0x09);
}

static int mainboard_smbios_data(device_t dev, int *handle, unsigned long *current)
{
	int len;
	char tpec[] = "IBM ThinkPad Embedded Controller -[                 ]-";
	const char *oem_strings[] = {
		tpec,
	};

	h8_build_id_and_function_spec_version(tpec + 35, 17);
	len = smbios_write_type11(current, (*handle)++, oem_strings, ARRAY_SIZE(oem_strings));

	return len;
}

static void mainboard_enable(device_t dev)
{
	dev->ops->init = mainboard_init;
	dev->ops->get_smbios_data = mainboard_smbios_data;
}

struct chip_operations mainboard_ops = {
	.enable_dev = mainboard_enable,
};