/*
 * Microwatt FPGA-based SoC platform setup code.
 *
 * Copyright 2020 Paul Mackerras (paulus@ozlabs.org), IBM Corp.
 */

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/stddef.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_platform.h>

#include <asm/machdep.h>
#include <asm/time.h>
#include <asm/xics.h>
#include <asm/udbg.h>

#include "microwatt.h"

static void __init microwatt_init_IRQ(void)
{
        xics_init();
}

static int __init microwatt_populate(void)
{
        return of_platform_default_populate(NULL, NULL, NULL);
}
machine_arch_initcall(microwatt, microwatt_populate);

static int __init microwatt_probe(void)
{
        /* Main reason for having this is to start the other CPU(s) */
        if (IS_ENABLED(CONFIG_SMP))
                microwatt_init_smp();
        return 1;
}

static void __init microwatt_setup_arch(void)
{
        microwatt_rng_init();
}

static void microwatt_idle(void)
{
        if (!prep_irq_for_idle_irqsoff())
                return;

        __asm__ __volatile__ ("wait");
}

define_machine(microwatt) {
        .name                   = "microwatt",
        .compatible             = "microwatt-soc",
        .probe                  = microwatt_probe,
        .init_IRQ               = microwatt_init_IRQ,
        .setup_arch             = microwatt_setup_arch,
        .progress               = udbg_progress,
        .power_save             = microwatt_idle,
};