/*
 * (C) Copyright 2010
 * ISEE 2007 SL, <www.iseebcn.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <common.h>
#include <status_led.h>
#include <dm.h>
#include <ns16550.h>
#include <twl4030.h>
#include <netdev.h>
#include <spl.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/mem.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/mux.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-types.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/onenand.h>
#include <jffs2/load_kernel.h>
#include "igep00x0.h"

DECLARE_GLOBAL_DATA_PTR;

static const struct ns16550_platdata igep_serial = {
	.base = OMAP34XX_UART3,
	.reg_shift = 2,
	.clock = V_NS16550_CLK
};

U_BOOT_DEVICE(igep_uart) = {
	"ns16550_serial",
	&igep_serial
};

/*
 * Routine: board_init
 * Description: Early hardware init.
 */
int board_init(void)
{
	int loops = 100;

	/* find out flash memory type, assume NAND first */
	gpmc_cs0_flash = MTD_DEV_TYPE_NAND;
	gpmc_init();

	/* Issue a RESET and then READID */
	writeb(NAND_CMD_RESET, &gpmc_cfg->cs[0].nand_cmd);
	writeb(NAND_CMD_STATUS, &gpmc_cfg->cs[0].nand_cmd);
	while ((readl(&gpmc_cfg->cs[0].nand_dat) & NAND_STATUS_READY)
	                                        != NAND_STATUS_READY) {
		udelay(1);
		if (--loops == 0) {
			gpmc_cs0_flash = MTD_DEV_TYPE_ONENAND;
			gpmc_init();	/* reinitialize for OneNAND */
			break;
		}
	}

	/* boot param addr */
	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);

#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
	status_led_set(STATUS_LED_BOOT, STATUS_LED_ON);
#endif

	return 0;
}

#ifdef CONFIG_SPL_BUILD
/*
 * Routine: get_board_mem_timings
 * Description: If we use SPL then there is no x-loader nor config header
 * so we have to setup the DDR timings ourself on both banks.
 */
void get_board_mem_timings(struct board_sdrc_timings *timings)
{
	int mfr, id, err = identify_nand_chip(&mfr, &id);

	timings->mr = MICRON_V_MR_165;
	if (!err && mfr == NAND_MFR_MICRON) {
		timings->mcfg = MICRON_V_MCFG_200(256 << 20);
		timings->ctrla = MICRON_V_ACTIMA_200;
		timings->ctrlb = MICRON_V_ACTIMB_200;
		timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
		gpmc_cs0_flash = MTD_DEV_TYPE_NAND;
	} else {
		if (get_cpu_family() == CPU_OMAP34XX) {
			timings->mcfg = NUMONYX_V_MCFG_165(256 << 20);
			timings->ctrla = NUMONYX_V_ACTIMA_165;
			timings->ctrlb = NUMONYX_V_ACTIMB_165;
			timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
		} else {
			timings->mcfg = NUMONYX_V_MCFG_200(256 << 20);
			timings->ctrla = NUMONYX_V_ACTIMA_200;
			timings->ctrlb = NUMONYX_V_ACTIMB_200;
			timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
		}
		gpmc_cs0_flash = MTD_DEV_TYPE_ONENAND;
	}
}

#ifdef CONFIG_SPL_OS_BOOT
int spl_start_uboot(void)
{
	/* break into full u-boot on 'c' */
	if (serial_tstc() && serial_getc() == 'c')
		return 1;

	return 0;
}
#endif
#endif

int onenand_board_init(struct mtd_info *mtd)
{
	if (gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND) {
		struct onenand_chip *this = mtd->priv;
		this->base = (void *)CONFIG_SYS_ONENAND_BASE;
		return 0;
	}
	return 1;
}

#if defined(CONFIG_CMD_NET)
static void reset_net_chip(int gpio)
{
	if (!gpio_request(gpio, "eth nrst")) {
		gpio_direction_output(gpio, 1);
		udelay(1);
		gpio_set_value(gpio, 0);
		udelay(40);
		gpio_set_value(gpio, 1);
		mdelay(10);
	}
}

/*
 * Routine: setup_net_chip
 * Description: Setting up the configuration GPMC registers specific to the
 *		Ethernet hardware.
 */
static void setup_net_chip(void)
{
	struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
	static const u32 gpmc_lan_config[] = {
		NET_LAN9221_GPMC_CONFIG1,
		NET_LAN9221_GPMC_CONFIG2,
		NET_LAN9221_GPMC_CONFIG3,
		NET_LAN9221_GPMC_CONFIG4,
		NET_LAN9221_GPMC_CONFIG5,
		NET_LAN9221_GPMC_CONFIG6,
	};

	enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
			CONFIG_SMC911X_BASE, GPMC_SIZE_16M);

	/* Enable off mode for NWE in PADCONF_GPMC_NWE register */
	writew(readw(&ctrl_base->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
	/* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
	writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
	/* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
	writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
		&ctrl_base->gpmc_nadv_ale);

	reset_net_chip(64);
}

int board_eth_init(bd_t *bis)
{
#ifdef CONFIG_SMC911X
	return smc911x_initialize(0, CONFIG_SMC911X_BASE);
#else
	return 0;
#endif
}
#else
static inline void setup_net_chip(void) {}
#endif

#if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
int board_mmc_init(bd_t *bis)
{
	return omap_mmc_init(0, 0, 0, -1, -1);
}
#endif

#if defined(CONFIG_GENERIC_MMC)
void board_mmc_power_init(void)
{
	twl4030_power_mmc_init(0);
}
#endif

void set_fdt(void)
{
	switch (gd->bd->bi_arch_number) {
	case MACH_TYPE_IGEP0020:
		setenv("fdtfile", "omap3-igep0020.dtb");
		break;
	case MACH_TYPE_IGEP0030:
		setenv("fdtfile", "omap3-igep0030.dtb");
		break;
	}
}

/*
 * Routine: misc_init_r
 * Description: Configure board specific parts
 */
int misc_init_r(void)
{
	twl4030_power_init();

	setup_net_chip();

	omap_die_id_display();

	set_fdt();

	return 0;
}

void board_mtdparts_default(const char **mtdids, const char **mtdparts)
{
	struct mtd_info *mtd = get_mtd_device(NULL, 0);
	if (mtd) {
		static char ids[24];
		static char parts[48];
		const char *linux_name = "omap2-nand";
		if (strncmp(mtd->name, "onenand0", 8) == 0)
			linux_name = "omap2-onenand";
		snprintf(ids, sizeof(ids), "%s=%s", mtd->name, linux_name);
		snprintf(parts, sizeof(parts), "mtdparts=%s:%dk(SPL),-(UBI)",
		         linux_name, 4 * mtd->erasesize >> 10);
		*mtdids = ids;
		*mtdparts = parts;
	}
}

/*
 * Routine: set_muxconf_regs
 * Description: Setting up the configuration Mux registers specific to the
 *		hardware. Many pins need to be moved from protect to primary
 *		mode.
 */
void set_muxconf_regs(void)
{
	MUX_DEFAULT();

#if (CONFIG_MACH_TYPE == MACH_TYPE_IGEP0020)
	MUX_IGEP0020();
#endif

#if (CONFIG_MACH_TYPE == MACH_TYPE_IGEP0030)
	MUX_IGEP0030();
#endif
}