/*
 * board/renesas/silk/silk.c
 *
 * Copyright (C) 2015 Renesas Electronics Corporation
 * Copyright (C) 2015 Cogent Embedded, Inc.
 *
 * SPDX-License-Identifier: GPL-2.0
 */

#include <common.h>
#include <malloc.h>
#include <dm.h>
#include <dm/platform_data/serial_sh.h>
#include <asm/processor.h>
#include <asm/mach-types.h>
#include <asm/io.h>
#include <linux/errno.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/arch/rmobile.h>
#include <asm/arch/rcar-mstp.h>
#include <asm/arch/mmc.h>
#include <asm/arch/sh_sdhi.h>
#include <netdev.h>
#include <miiphy.h>
#include <i2c.h>
#include <div64.h>
#include "qos.h"

DECLARE_GLOBAL_DATA_PTR;

#define CLK2MHZ(clk)    (clk / 1000 / 1000)
void s_init(void)
{
        struct rcar_rwdt *rwdt = (struct rcar_rwdt *)RWDT_BASE;
        struct rcar_swdt *swdt = (struct rcar_swdt *)SWDT_BASE;

        /* Watchdog init */
        writel(0xA5A5A500, &rwdt->rwtcsra);
        writel(0xA5A5A500, &swdt->swtcsra);

        /* QoS */
        qos_init();
}

#define TMU0_MSTP125    (1 << 25)
#define SCIF2_MSTP719   (1 << 19)
#define ETHER_MSTP813   (1 << 13)
#define IIC1_MSTP323    (1 << 23)
#define MMC0_MSTP315    (1 << 15)
#define SDHI1_MSTP312   (1 << 12)

#define SD1CKCR         0xE6150078
#define SD1_97500KHZ    0x7

int board_early_init_f(void)
{
        /* TMU */
        mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);

        /* SCIF2 */
        mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF2_MSTP719);

        /* ETHER */
        mstp_clrbits_le32(MSTPSR8, SMSTPCR8, ETHER_MSTP813);

        /* IIC1 / sh-i2c ch1 */
        mstp_clrbits_le32(MSTPSR3, SMSTPCR3, IIC1_MSTP323);

#ifdef CONFIG_SH_MMCIF
        /* MMC */
        mstp_clrbits_le32(MSTPSR3, SMSTPCR3, MMC0_MSTP315);
#endif

#ifdef CONFIG_SH_SDHI
        /* SDHI1 */
        mstp_clrbits_le32(MSTPSR3, SMSTPCR3, SDHI1_MSTP312);

        /*
         * Set SD1 to the 97.5MHz
         */
        writel(SD1_97500KHZ, SD1CKCR);
#endif
        return 0;
}

/* LSI pin pull-up control */
#define PUPR3           0xe606010C
#define PUPR3_ETH       0x006FF800
#define PUPR1           0xe6060104
#define PUPR1_DREQ0_N   (1 << 20)
int board_init(void)
{
        /* adress of boot parameters */
        gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;

        /* Init PFC controller */
        r8a7794_pinmux_init();

        /* Ether Enable */
        gpio_request(GPIO_FN_ETH_CRS_DV, NULL);
        gpio_request(GPIO_FN_ETH_RX_ER, NULL);
        gpio_request(GPIO_FN_ETH_RXD0, NULL);
        gpio_request(GPIO_FN_ETH_RXD1, NULL);
        gpio_request(GPIO_FN_ETH_LINK, NULL);
        gpio_request(GPIO_FN_ETH_REFCLK, NULL);
        gpio_request(GPIO_FN_ETH_MDIO, NULL);
        gpio_request(GPIO_FN_ETH_TXD1, NULL);
        gpio_request(GPIO_FN_ETH_TX_EN, NULL);
        gpio_request(GPIO_FN_ETH_MAGIC, NULL);
        gpio_request(GPIO_FN_ETH_TXD0, NULL);
        gpio_request(GPIO_FN_ETH_MDC, NULL);
        gpio_request(GPIO_FN_IRQ8, NULL);

        /* PHY reset */
        mstp_clrbits_le32(PUPR3, PUPR3, PUPR3_ETH);
        gpio_request(GPIO_GP_1_24, NULL);
        mstp_clrbits_le32(PUPR1, PUPR1, PUPR1_DREQ0_N);

        gpio_direction_output(GPIO_GP_1_24, 0);
        mdelay(20);
        gpio_set_value(GPIO_GP_1_24, 1);
        udelay(1);

        return 0;
}

#define CXR24 0xEE7003C0 /* MAC address high register */
#define CXR25 0xEE7003C8 /* MAC address low register */
int board_eth_init(bd_t *bis)
{
#ifdef CONFIG_SH_ETHER
        int ret = -ENODEV;
        u32 val;
        unsigned char enetaddr[6];

        ret = sh_eth_initialize(bis);
        if (!eth_getenv_enetaddr("ethaddr", enetaddr))
                return ret;

        /* Set Mac address */
        val = enetaddr[0] << 24 | enetaddr[1] << 16 |
                enetaddr[2] << 8 | enetaddr[3];
        writel(val, CXR24);

        val = enetaddr[4] << 8 | enetaddr[5];
        writel(val, CXR25);

        return ret;
#else
        return 0;
#endif
}

int board_mmc_init(bd_t *bis)
{
        int ret = -ENODEV;

#ifdef CONFIG_SH_MMCIF
        /* MMC0 */
        gpio_request(GPIO_GP_4_31, NULL);
        gpio_direction_output(GPIO_GP_4_31, 1);

        ret = mmcif_mmc_init();
#endif

#ifdef CONFIG_SH_SDHI
        gpio_request(GPIO_FN_SD1_DATA0, NULL);
        gpio_request(GPIO_FN_SD1_DATA1, NULL);
        gpio_request(GPIO_FN_SD1_DATA2, NULL);
        gpio_request(GPIO_FN_SD1_DATA3, NULL);
        gpio_request(GPIO_FN_SD1_CLK, NULL);
        gpio_request(GPIO_FN_SD1_CMD, NULL);
        gpio_request(GPIO_FN_SD1_CD, NULL);

        /* SDHI 1 */
        gpio_request(GPIO_GP_4_26, NULL);
        gpio_request(GPIO_GP_4_29, NULL);
        gpio_direction_output(GPIO_GP_4_26, 1);
        gpio_direction_output(GPIO_GP_4_29, 1);

        ret = sh_sdhi_init(CONFIG_SYS_SH_SDHI1_BASE, 1, 0);
#endif
        return ret;
}

int dram_init(void)
{
        gd->ram_size = CONFIG_SYS_SDRAM_SIZE;

        return 0;
}

const struct rmobile_sysinfo sysinfo = {
        CONFIG_ARCH_RMOBILE_BOARD_STRING
};

void reset_cpu(ulong addr)
{
        u8 val;

        i2c_set_bus_num(1); /* PowerIC connected to ch1 */
        i2c_read(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
        val |= 0x02;
        i2c_write(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
}

static const struct sh_serial_platdata serial_platdata = {
        .base = SCIF2_BASE,
        .type = PORT_SCIF,
        .clk = 14745600,
        .clk_mode = EXT_CLK,
};

U_BOOT_DEVICE(silk_serials) = {
        .name = "serial_sh",
        .platdata = &serial_platdata,
};