WSL2-Linux-Kernel/arch/powerpc/platforms/83xx/mpc834x_itx.c

/*
 * arch/powerpc/platforms/83xx/mpc834x_itx.c
 *
 * MPC834x ITX board specific routines
 *
 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/of_platform.h>

#include <asm/system.h>
#include <asm/atomic.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>

#include "mpc83xx.h"

static struct of_device_id __initdata mpc834x_itx_ids[] = {
	{ .compatible = "fsl,pq2pro-localbus", },
	{ .compatible = "simple-bus", },
	{},
};

static int __init mpc834x_itx_declare_of_platform_devices(void)
{
	return of_platform_bus_probe(NULL, mpc834x_itx_ids, NULL);
}
machine_device_initcall(mpc834x_itx, mpc834x_itx_declare_of_platform_devices);

/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc834x_itx_setup_arch(void)
{
#ifdef CONFIG_PCI
	struct device_node *np;
#endif

	if (ppc_md.progress)
		ppc_md.progress("mpc834x_itx_setup_arch()", 0);

#ifdef CONFIG_PCI
	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
		mpc83xx_add_bridge(np);
#endif

	mpc834x_usb_cfg();
}

static void __init mpc834x_itx_init_IRQ(void)
{
	struct device_node *np;

	np = of_find_node_by_type(NULL, "ipic");
	if (!np)
		return;

	ipic_init(np, 0);

	/* Initialize the default interrupt mapping priorities,
	 * in case the boot rom changed something on us.
	 */
	ipic_set_default_priority();
}

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */
static int __init mpc834x_itx_probe(void)
{
        unsigned long root = of_get_flat_dt_root();

        return of_flat_dt_is_compatible(root, "MPC834xMITX");
}

define_machine(mpc834x_itx) {
	.name			= "MPC834x ITX",
	.probe			= mpc834x_itx_probe,
	.setup_arch		= mpc834x_itx_setup_arch,
	.init_IRQ		= mpc834x_itx_init_IRQ,
	.get_irq		= ipic_get_irq,
	.restart		= mpc83xx_restart,
	.time_init		= mpc83xx_time_init,
	.calibrate_decr		= generic_calibrate_decr,
	.progress		= udbg_progress,
};