// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Freescale P2020 board Setup
 *
 * Copyright 2007,2009,2012-2013 Freescale Semiconductor Inc.
 * Copyright 2022-2023 Pali Rohár <pali@kernel.org>
 */

#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/of.h>

#include <asm/machdep.h>
#include <asm/udbg.h>
#include <asm/mpic.h>
#include <asm/swiotlb.h>
#include <asm/ppc-pci.h>

#include <sysdev/fsl_pci.h>

#include "smp.h"
#include "mpc85xx.h"

static void __init p2020_pic_init(void)
{
        struct mpic *mpic;
        int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU;

        mpic = mpic_alloc(NULL, 0, flags, 0, 256, " OpenPIC  ");

        if (WARN_ON(!mpic))
                return;

        mpic_init(mpic);
        mpc85xx_8259_init();
}

/*
 * Setup the architecture
 */
static void __init p2020_setup_arch(void)
{
        swiotlb_detect_4g();
        fsl_pci_assign_primary();
        uli_init();
        mpc85xx_smp_init();
        mpc85xx_qe_par_io_init();
}

/*
 * Called very early, device-tree isn't unflattened
 */
static int __init p2020_probe(void)
{
        struct device_node *p2020_cpu;

        /*
         * There is no common compatible string for all P2020 boards.
         * The only common thing is "PowerPC,P2020@0" cpu node.
         * So check for P2020 board via this cpu node.
         */
        p2020_cpu = of_find_node_by_path("/cpus/PowerPC,P2020@0");
        of_node_put(p2020_cpu);

        return !!p2020_cpu;
}

machine_arch_initcall(p2020, mpc85xx_common_publish_devices);

define_machine(p2020) {
        .name                   = "Freescale P2020",
        .probe                  = p2020_probe,
        .setup_arch             = p2020_setup_arch,
        .init_IRQ               = p2020_pic_init,
#ifdef CONFIG_PCI
        .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
        .pcibios_fixup_phb      = fsl_pcibios_fixup_phb,
#endif
        .get_irq                = mpic_get_irq,
        .progress               = udbg_progress,
};