socrates.c

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/*
 * Copyright (c) 2008 Emcraft Systems
 * Sergei Poselenov <[email protected]>
 *
 * Based on MPC8560 ADS and arch/ppc tqm85xx ports
 *
 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
 *
 * Copyright 2008 Freescale Semiconductor Inc.
 *
 * Copyright (c) 2005-2006 DENX Software Engineering
 * Stefan Roese <[email protected]>
 *
 * Based on original work by
 *  Kumar Gala <[email protected]>
 *      Copyright 2004 Freescale Semiconductor Inc.
 *
 * 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/pci.h>
#include <linux/kdev_t.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/of_platform.h>

#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/mpic.h>
#include <asm/prom.h>
#include <mm/mmu_decl.h>
#include <asm/udbg.h>

#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>

#include "mpc85xx.h"
#include "socrates_fpga_pic.h"

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

    struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
            0, 256, " OpenPIC  ");
    BUG_ON(mpic == NULL);
    mpic_init(mpic);

    np = of_find_compatible_node(NULL, NULL, "abb,socrates-fpga-pic");
    if (!np) {
        printk(KERN_ERR "Could not find socrates-fpga-pic node\n");
        return;
    }
    socrates_fpga_pic_init(np);
    of_node_put(np);
}

/*
 * Setup the architecture
 */
static void __init socrates_setup_arch(void)
{
    if (ppc_md.progress)
        ppc_md.progress("socrates_setup_arch()", 0);

    fsl_pci_assign_primary();
}

machine_arch_initcall(socrates, mpc85xx_common_publish_devices);

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

    if (of_flat_dt_is_compatible(root, "abb,socrates"))
        return 1;

    return 0;
}

define_machine(socrates) {
    .name           = "Socrates",
    .probe          = socrates_probe,
    .setup_arch     = socrates_setup_arch,
    .init_IRQ       = socrates_pic_init,
    .get_irq        = mpic_get_irq,
    .restart        = fsl_rstcr_restart,
    .calibrate_decr     = generic_calibrate_decr,
    .progress       = udbg_progress,
};