mpc832x_mds.c

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/*
 * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.
 *
 * Description:
 * MPC832xE MDS board specific routines.
 *
 * 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/initrd.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>

#include <linux/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 <asm/qe.h>
#include <asm/qe_ic.h>

#include "mpc83xx.h"

#undef DEBUG
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif

/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc832x_sys_setup_arch(void)
{
    struct device_node *np;
    u8 __iomem *bcsr_regs = NULL;

    if (ppc_md.progress)
        ppc_md.progress("mpc832x_sys_setup_arch()", 0);

    /* Map BCSR area */
    np = of_find_node_by_name(NULL, "bcsr");
    if (np) {
        struct resource res;

        of_address_to_resource(np, 0, &res);
        bcsr_regs = ioremap(res.start, resource_size(&res));
        of_node_put(np);
    }

    mpc83xx_setup_pci();

#ifdef CONFIG_QUICC_ENGINE
    qe_reset();

    if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
        par_io_init(np);
        of_node_put(np);

        for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
            par_io_of_config(np);
    }

    if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
            != NULL){
        /* Reset the Ethernet PHYs */
#define BCSR8_FETH_RST 0x50
        clrbits8(&bcsr_regs[8], BCSR8_FETH_RST);
        udelay(1000);
        setbits8(&bcsr_regs[8], BCSR8_FETH_RST);
        iounmap(bcsr_regs);
        of_node_put(np);
    }
#endif              /* CONFIG_QUICC_ENGINE */
}

machine_device_initcall(mpc832x_mds, mpc83xx_declare_of_platform_devices);

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */
static int __init mpc832x_sys_probe(void)
{
        unsigned long root = of_get_flat_dt_root();

        return of_flat_dt_is_compatible(root, "MPC832xMDS");
}

define_machine(mpc832x_mds) {
    .name       = "MPC832x MDS",
    .probe      = mpc832x_sys_probe,
    .setup_arch     = mpc832x_sys_setup_arch,
    .init_IRQ   = mpc83xx_ipic_and_qe_init_IRQ,
    .get_irq    = ipic_get_irq,
    .restart    = mpc83xx_restart,
    .time_init  = mpc83xx_time_init,
    .calibrate_decr = generic_calibrate_decr,
    .progress   = udbg_progress,
};