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mpc834x_mds.c

/*
 * arch/powerpc/platforms/83xx/mpc834x_mds.c
 *
 * MPC834x MDS 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 <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 "mpc83xx.h"

#define BCSR5_INT_USB         0x02
static int mpc834xemds_usb_cfg(void)
{
      struct device_node *np;
      void __iomem *bcsr_regs = NULL;
      u8 bcsr5;

      mpc834x_usb_cfg();
      /* 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, res.end - res.start + 1);
            of_node_put(np);
      }
      if (!bcsr_regs)
            return -1;

      /*
       * if Processor Board is plugged into PIB board,
       * force to use the PHY on Processor Board
       */
      bcsr5 = in_8(bcsr_regs + 5);
      if (!(bcsr5 & BCSR5_INT_USB))
            out_8(bcsr_regs + 5, (bcsr5 | BCSR5_INT_USB));
      iounmap(bcsr_regs);
      return 0;
}

/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc834x_mds_setup_arch(void)
{
#ifdef CONFIG_PCI
      struct device_node *np;
#endif

      if (ppc_md.progress)
            ppc_md.progress("mpc834x_mds_setup_arch()", 0);

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

      mpc834xemds_usb_cfg();
}

static void __init mpc834x_mds_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_mds_probe(void)
{
        unsigned long root = of_get_flat_dt_root();

        return of_flat_dt_is_compatible(root, "MPC834xMDS");
}

define_machine(mpc834x_mds) {
      .name             = "MPC834x MDS",
      .probe                  = mpc834x_mds_probe,
      .setup_arch       = mpc834x_mds_setup_arch,
      .init_IRQ         = mpc834x_mds_init_IRQ,
      .get_irq          = ipic_get_irq,
      .restart          = mpc83xx_restart,
      .time_init        = mpc83xx_time_init,
      .calibrate_decr         = generic_calibrate_decr,
      .progress         = udbg_progress,
};

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