/*
 * This file is part of the coreboot project.
 *
 *
 * 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 <amdblocks/acpimmio.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <console/console.h>
#include <northbridge/amd/agesa/state_machine.h>

#include "gpio_ftns.h"

static void early_lpc_init(void);

void board_BeforeAgesa(struct sysinfo *cb)
{
	u32 val;

	early_lpc_init();

	/* Disable SVI2 controller to wait for command completion */
	val = pci_read_config32(PCI_DEV(0, 0x18, 5), 0x12C);
	if (!(val & (1 << 30))) {
		val |= (1 << 30);
		pci_write_config32(PCI_DEV(0, 0x18, 5), 0x12C, val);
	}

	/* Release GPIO32/33 for other uses. */
	pm_write8(0xea, 1);

	/*
	 * Assert resets on the PCIe slots, since AGESA calls deassert callout
	 * only. Only apu2 uses GPIOs to reset PCIe slots.
	 */
	if (CONFIG(BOARD_PCENGINES_APU2)) {
		gpio1_write8(0xa, gpio1_read8(0xa) & ~(1 << 6));
		gpio1_write8(0xe, gpio1_read8(0xe) & ~(1 << 6));
	}
}

static void early_lpc_init(void)
{
	u32 setting = 0x0;

	//
	// Configure output disabled, value low, pull up/down disabled
	//
	if (CONFIG(BOARD_PCENGINES_APU5)) {
		configure_gpio(IOMUX_GPIO_22, Function0, GPIO_22, setting);
	}

	if (CONFIG(BOARD_PCENGINES_APU2) ||
		CONFIG(BOARD_PCENGINES_APU3) ||
		CONFIG(BOARD_PCENGINES_APU4)) {
		configure_gpio(IOMUX_GPIO_32, Function0, GPIO_32, setting);
	}

	configure_gpio(IOMUX_GPIO_49, Function2, GPIO_49, setting);
	configure_gpio(IOMUX_GPIO_50, Function2, GPIO_50, setting);
	configure_gpio(IOMUX_GPIO_71, Function0, GPIO_71, setting);

	//
	// Configure output enabled, value low, pull up/down disabled
	//
	setting = GPIO_OUTPUT_ENABLE;
	if (CONFIG(BOARD_PCENGINES_APU3) ||
		CONFIG(BOARD_PCENGINES_APU4)) {
		configure_gpio(IOMUX_GPIO_33, Function0, GPIO_33, setting);
	}

	configure_gpio(IOMUX_GPIO_57, Function1, GPIO_57, setting);
	configure_gpio(IOMUX_GPIO_58, Function1, GPIO_58, setting);
	configure_gpio(IOMUX_GPIO_59, Function3, GPIO_59, setting);

	//
	// Configure output enabled, value high, pull up/down disabled
	//
	setting = GPIO_OUTPUT_ENABLE | GPIO_OUTPUT_VALUE;

	if (CONFIG(BOARD_PCENGINES_APU5)) {
		configure_gpio(IOMUX_GPIO_32, Function0, GPIO_32, setting);
		configure_gpio(IOMUX_GPIO_33, Function0, GPIO_33, setting);
	}

	configure_gpio(IOMUX_GPIO_51, Function2, GPIO_51, setting);
	configure_gpio(IOMUX_GPIO_55, Function3, GPIO_55, setting);
	configure_gpio(IOMUX_GPIO_64, Function2, GPIO_64, setting);
	configure_gpio(IOMUX_GPIO_68, Function0, GPIO_68, setting);
}