/*
 * Copyright (C) 2015 Freescale Semiconductor, Inc.
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

#include <common.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-imx/boot_mode.h>
#include <asm/mach-imx/dma.h>
#include <asm/mach-imx/hab.h>
#include <asm/mach-imx/rdc-sema.h>
#include <asm/arch/imx-rdc.h>
#include <asm/arch/crm_regs.h>
#include <dm.h>
#include <imx_thermal.h>
#include <fsl_sec.h>

#if defined(CONFIG_IMX_THERMAL)
static const struct imx_thermal_plat imx7_thermal_plat = {
        .regs = (void *)ANATOP_BASE_ADDR,
        .fuse_bank = 3,
        .fuse_word = 3,
};

U_BOOT_DEVICE(imx7_thermal) = {
        .name = "imx_thermal",
        .platdata = &imx7_thermal_plat,
};
#endif

#if CONFIG_IS_ENABLED(IMX_RDC)
/*
 * In current design, if any peripheral was assigned to both A7 and M4,
 * it will receive ipg_stop or ipg_wait when any of the 2 platforms enter
 * low power mode. So M4 sleep will cause some peripherals fail to work
 * at A7 core side. At default, all resources are in domain 0 - 3.
 *
 * There are 26 peripherals impacted by this IC issue:
 * SIM2(sim2/emvsim2)
 * SIM1(sim1/emvsim1)
 * UART1/UART2/UART3/UART4/UART5/UART6/UART7
 * SAI1/SAI2/SAI3
 * WDOG1/WDOG2/WDOG3/WDOG4
 * GPT1/GPT2/GPT3/GPT4
 * PWM1/PWM2/PWM3/PWM4
 * ENET1/ENET2
 * Software Workaround:
 * Here we setup some resources to domain 0 where M4 codes will move
 * the M4 out of this domain. Then M4 is not able to access them any longer.
 * This is a workaround for ic issue. So the peripherals are not shared
 * by them. This way requires the uboot implemented the RDC driver and
 * set the 26 IPs above to domain 0 only. M4 code will assign resource
 * to its own domain, if it want to use the resource.
 */
static rdc_peri_cfg_t const resources[] = {
        (RDC_PER_SIM1 | RDC_DOMAIN(0)),
        (RDC_PER_SIM2 | RDC_DOMAIN(0)),
        (RDC_PER_UART1 | RDC_DOMAIN(0)),
        (RDC_PER_UART2 | RDC_DOMAIN(0)),
        (RDC_PER_UART3 | RDC_DOMAIN(0)),
        (RDC_PER_UART4 | RDC_DOMAIN(0)),
        (RDC_PER_UART5 | RDC_DOMAIN(0)),
        (RDC_PER_UART6 | RDC_DOMAIN(0)),
        (RDC_PER_UART7 | RDC_DOMAIN(0)),
        (RDC_PER_SAI1 | RDC_DOMAIN(0)),
        (RDC_PER_SAI2 | RDC_DOMAIN(0)),
        (RDC_PER_SAI3 | RDC_DOMAIN(0)),
        (RDC_PER_WDOG1 | RDC_DOMAIN(0)),
        (RDC_PER_WDOG2 | RDC_DOMAIN(0)),
        (RDC_PER_WDOG3 | RDC_DOMAIN(0)),
        (RDC_PER_WDOG4 | RDC_DOMAIN(0)),
        (RDC_PER_GPT1 | RDC_DOMAIN(0)),
        (RDC_PER_GPT2 | RDC_DOMAIN(0)),
        (RDC_PER_GPT3 | RDC_DOMAIN(0)),
        (RDC_PER_GPT4 | RDC_DOMAIN(0)),
        (RDC_PER_PWM1 | RDC_DOMAIN(0)),
        (RDC_PER_PWM2 | RDC_DOMAIN(0)),
        (RDC_PER_PWM3 | RDC_DOMAIN(0)),
        (RDC_PER_PWM4 | RDC_DOMAIN(0)),
        (RDC_PER_ENET1 | RDC_DOMAIN(0)),
        (RDC_PER_ENET2 | RDC_DOMAIN(0)),
};

static void isolate_resource(void)
{
        imx_rdc_setup_peripherals(resources, ARRAY_SIZE(resources));
}
#endif

#if defined(CONFIG_SECURE_BOOT)
struct imx_sec_config_fuse_t const imx_sec_config_fuse = {
        .bank = 1,
        .word = 3,
};
#endif

static bool is_mx7d(void)
{
        struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
        struct fuse_bank *bank = &ocotp->bank[1];
        struct fuse_bank1_regs *fuse =
                (struct fuse_bank1_regs *)bank->fuse_regs;
        int val;

        val = readl(&fuse->tester4);
        if (val & 1)
                return false;
        else
                return true;
}

u32 get_cpu_rev(void)
{
        struct mxc_ccm_anatop_reg *ccm_anatop = (struct mxc_ccm_anatop_reg *)
                                                 ANATOP_BASE_ADDR;
        u32 reg = readl(&ccm_anatop->digprog);
        u32 type = (reg >> 16) & 0xff;

        if (!is_mx7d())
                type = MXC_CPU_MX7S;

        reg &= 0xff;
        return (type << 12) | reg;
}

#ifdef CONFIG_REVISION_TAG
u32 __weak get_board_rev(void)
{
        return get_cpu_rev();
}
#endif

/* enable all periherial can be accessed in nosec mode */
static void init_csu(void)
{
        int i = 0;
        for (i = 0; i < CSU_NUM_REGS; i++)
                writel(CSU_INIT_SEC_LEVEL0, CSU_IPS_BASE_ADDR + i * 4);
}

static void imx_enet_mdio_fixup(void)
{
        struct iomuxc_gpr_base_regs *gpr_regs =
                (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;

        /*
         * The management data input/output (MDIO) requires open-drain,
         * i.MX7D TO1.0 ENET MDIO pin has no open drain, but TO1.1 supports
         * this feature. So to TO1.1, need to enable open drain by setting
         * bits GPR0[8:7].
         */

        if (soc_rev() >= CHIP_REV_1_1) {
                setbits_le32(&gpr_regs->gpr[0],
                             IOMUXC_GPR_GPR0_ENET_MDIO_OPEN_DRAIN_MASK);
        }
}

int arch_cpu_init(void)
{
        init_aips();

        init_csu();
        /* Disable PDE bit of WMCR register */
        imx_wdog_disable_powerdown();

        imx_enet_mdio_fixup();

#ifdef CONFIG_APBH_DMA
        /* Start APBH DMA */
        mxs_dma_init();
#endif

#if CONFIG_IS_ENABLED(IMX_RDC)
        isolate_resource();
#endif

        return 0;
}

#ifdef CONFIG_ARCH_MISC_INIT
int arch_misc_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
        if (is_mx7d())
                env_set("soc", "imx7d");
        else
                env_set("soc", "imx7s");
#endif

#ifdef CONFIG_FSL_CAAM
        sec_init();
#endif

        return 0;
}
#endif

#ifdef CONFIG_SERIAL_TAG
void get_board_serial(struct tag_serialnr *serialnr)
{
        struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
        struct fuse_bank *bank = &ocotp->bank[0];
        struct fuse_bank0_regs *fuse =
                (struct fuse_bank0_regs *)bank->fuse_regs;

        serialnr->low = fuse->tester0;
        serialnr->high = fuse->tester1;
}
#endif

void set_wdog_reset(struct wdog_regs *wdog)
{
        u32 reg = readw(&wdog->wcr);
        /*
         * Output WDOG_B signal to reset external pmic or POR_B decided by
         * the board desgin. Without external reset, the peripherals/DDR/
         * PMIC are not reset, that may cause system working abnormal.
         */
        reg = readw(&wdog->wcr);
        reg |= 1 << 3;
        /*
         * WDZST bit is write-once only bit. Align this bit in kernel,
         * otherwise kernel code will have no chance to set this bit.
         */
        reg |= 1 << 0;
        writew(reg, &wdog->wcr);
}

/*
 * cfg_val will be used for
 * Boot_cfg4[7:0]:Boot_cfg3[7:0]:Boot_cfg2[7:0]:Boot_cfg1[7:0]
 * After reset, if GPR10[28] is 1, ROM will copy GPR9[25:0]
 * to SBMR1, which will determine the boot device.
 */
const struct boot_mode soc_boot_modes[] = {
        {"ecspi1:0",    MAKE_CFGVAL(0x00, 0x60, 0x00, 0x00)},
        {"ecspi1:1",    MAKE_CFGVAL(0x40, 0x62, 0x00, 0x00)},
        {"ecspi1:2",    MAKE_CFGVAL(0x80, 0x64, 0x00, 0x00)},
        {"ecspi1:3",    MAKE_CFGVAL(0xc0, 0x66, 0x00, 0x00)},

        {"weim",        MAKE_CFGVAL(0x00, 0x50, 0x00, 0x00)},
        {"qspi1",       MAKE_CFGVAL(0x10, 0x40, 0x00, 0x00)},
        /* 4 bit bus width */
        {"usdhc1",      MAKE_CFGVAL(0x10, 0x10, 0x00, 0x00)},
        {"usdhc2",      MAKE_CFGVAL(0x10, 0x14, 0x00, 0x00)},
        {"usdhc3",      MAKE_CFGVAL(0x10, 0x18, 0x00, 0x00)},
        {"mmc1",        MAKE_CFGVAL(0x10, 0x20, 0x00, 0x00)},
        {"mmc2",        MAKE_CFGVAL(0x10, 0x24, 0x00, 0x00)},
        {"mmc3",        MAKE_CFGVAL(0x10, 0x28, 0x00, 0x00)},
        {NULL,          0},
};

void s_init(void)
{
#if !defined CONFIG_SPL_BUILD
        /* Enable SMP mode for CPU0, by setting bit 6 of Auxiliary Ctl reg */
        asm volatile(
                        "mrc p15, 0, r0, c1, c0, 1\n"
                        "orr r0, r0, #1 << 6\n"
                        "mcr p15, 0, r0, c1, c0, 1\n");
#endif
        /* clock configuration. */
        clock_init();

        return;
}

void reset_misc(void)
{
#ifdef CONFIG_VIDEO_MXS
        lcdif_power_down();
#endif
}