// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Paravirt target for a generic QEMU e500 machine
 *
 * This is intended to be a flexible device-tree-driven platform, not fixed
 * to a particular piece of hardware or a particular spec of virtual hardware,
 * beyond the assumption of an e500-family CPU.  Some things are still hardcoded
 * here, such as MPIC, but this is a limitation of the current code rather than
 * an interface contract with QEMU.
 *
 * Copyright 2012 Freescale Semiconductor Inc.
 */

#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/pgtable.h>
#include <asm/machdep.h>
#include <asm/time.h>
#include <asm/udbg.h>
#include <asm/mpic.h>
#include <asm/swiotlb.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
#include "smp.h"
#include "mpc85xx.h"

static void __init qemu_e500_pic_init(void)
{
        struct mpic *mpic;
        unsigned int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU |
                MPIC_ENABLE_COREINT;

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

        BUG_ON(mpic == NULL);
        mpic_init(mpic);
}

static void __init qemu_e500_setup_arch(void)
{
        ppc_md.progress("qemu_e500_setup_arch()", 0);

        fsl_pci_assign_primary();
        swiotlb_detect_4g();
        mpc85xx_smp_init();
}

machine_arch_initcall(qemu_e500, mpc85xx_common_publish_devices);

define_machine(qemu_e500) {
        .name                   = "QEMU e500",
        .compatible             = "fsl,qemu-e500",
        .setup_arch             = qemu_e500_setup_arch,
        .init_IRQ               = qemu_e500_pic_init,
#ifdef CONFIG_PCI
        .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
        .pcibios_fixup_phb      = fsl_pcibios_fixup_phb,
#endif
        .get_irq                = mpic_get_coreint_irq,
        .progress               = udbg_progress,
        .power_save             = e500_idle,
};