text: /*
   *  Copyright (C) NEC Electronics Corporation 2004-2006
   *
   *  This file is based on the arch/mips/ddb5xxx/ddb5477/setup.c.
   *
   *	Copyright 2001 MontaVista Software 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.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, write to the Free Software
   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <linux/types.h>
  
  #include <asm/time.h>
  #include <asm/reboot.h>
  
  #include <asm/emma/emma2rh.h>
  
  #define USE_CPU_COUNTER_TIMER	/* whether we use cpu counter */
  
  extern void markeins_led(const char *);
  
  static int bus_frequency;
  
  static void markeins_machine_restart(char *command)
  {
  	static void (*back_to_prom) (void) = (void (*)(void))0xbfc00000;
  
  	printk("cannot EMMA2RH Mark-eins restart.\n");
  	markeins_led("restart.");
  	back_to_prom();
  }
  
  static void markeins_machine_halt(void)
  {
  	printk("EMMA2RH Mark-eins halted.\n");
  	markeins_led("halted.");
  	while (1) ;
  }
  
  static void markeins_machine_power_off(void)
  {
  	markeins_led("poweroff.");
  	while (1) ;
  }
  
  static unsigned long __initdata emma2rh_clock[4] = {
  	166500000, 187312500, 199800000, 210600000
  };
  
  static unsigned int __init detect_bus_frequency(unsigned long rtc_base)
  {
  	u32 reg;
  
  	/* detect from boot strap */
  	reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
  	reg = (reg >> 4) & 0x3;
  
  	return emma2rh_clock[reg];
  }
  
  void __init plat_time_init(void)
  {
  	u32 reg;
  	if (bus_frequency == 0)
  		bus_frequency = detect_bus_frequency(0);
  
  	reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
  	if ((reg & 0x3) == 0)
  		reg = (reg >> 6) & 0x3;
  	else {
  		reg = emma2rh_in32(EMMA2RH_BHIF_MAIN_CTRL);
  		reg = (reg >> 4) & 0x3;
  	}
  	mips_hpt_frequency = (bus_frequency * (4 + reg)) / 4 / 2;
  }
  
  static void markeins_board_init(void);
  extern void markeins_irq_setup(void);
  
  static inline void __init markeins_sio_setup(void)
  {
  }
  
  void __init plat_mem_setup(void)
  {
  	/* initialize board - we don't trust the loader */
  	markeins_board_init();
  
  	set_io_port_base(KSEG1ADDR(EMMA2RH_PCI_IO_BASE));
  
  	_machine_restart = markeins_machine_restart;
  	_machine_halt = markeins_machine_halt;
  	pm_power_off = markeins_machine_power_off;
  
  	/* setup resource limits */
  	ioport_resource.start = EMMA2RH_PCI_IO_BASE;
  	ioport_resource.end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1;
  	iomem_resource.start = EMMA2RH_IO_BASE;
  	iomem_resource.end = EMMA2RH_ROM_BASE - 1;
  
  	markeins_sio_setup();
  }
  
  static void __init markeins_board_init(void)
  {
  	u32 val;
  
  	val = emma2rh_in32(EMMA2RH_PBRD_INT_EN);	/* open serial interrupts. */
  	emma2rh_out32(EMMA2RH_PBRD_INT_EN, val | 0xaa);
  	val = emma2rh_in32(EMMA2RH_PBRD_CLKSEL);	/* set serial clocks. */
  	emma2rh_out32(EMMA2RH_PBRD_CLKSEL, val | 0x5);	/* 18MHz */
  	emma2rh_out32(EMMA2RH_PCI_CONTROL, 0);
  
  	markeins_led("MVL E2RH");
  }
  