text: /*
   * 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,
  };
  