/*
   * IP32 basic setup
   *
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   *
   * Copyright (C) 2000 Harald Koerfgen
   * Copyright (C) 2002, 2003, 2005 Ilya A. Volynets

   * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>

   */

  #include <linux/console.h>
  #include <linux/init.h>
  #include <linux/interrupt.h>
  #include <linux/mc146818rtc.h>
  #include <linux/param.h>
  #include <linux/sched.h>
  
  #include <asm/bootinfo.h>
  #include <asm/mc146818-time.h>
  #include <asm/mipsregs.h>
  #include <asm/mmu_context.h>
  #include <asm/sgialib.h>
  #include <asm/time.h>
  #include <asm/traps.h>
  #include <asm/io.h>
  #include <asm/ip32/crime.h>
  #include <asm/ip32/mace.h>
  #include <asm/ip32/ip32_ints.h>
  
  extern void ip32_be_init(void);
  extern void crime_init(void);
  
  #ifdef CONFIG_SGI_O2MACE_ETH
  /*
   * This is taken care of in here 'cause they say using Arc later on is
   * problematic
   */
  extern char o2meth_eaddr[8];
  static inline unsigned char str2hexnum(unsigned char c)
  {
  	if (c >= '0' && c <= '9')
  		return c - '0';
  	if (c >= 'a' && c <= 'f')
  		return c - 'a' + 10;
  	return 0; /* foo */
  }
  
  static inline void str2eaddr(unsigned char *ea, unsigned char *str)
  {
  	int i;
  
  	for (i = 0; i < 6; i++) {
  		unsigned char num;
  
  		if(*str == ':')
  			str++;
  		num = str2hexnum(*str++) << 4;
  		num |= (str2hexnum(*str++));
  		ea[i] = num;
  	}
  }
  #endif

  /* An arbitrary time; this can be decreased if reliability looks good */
  #define WAIT_MS 10

  void __init plat_time_init(void)

  {
  	printk(KERN_INFO "Calibrating system timer... ");
  	write_c0_count(0);
  	crime->timer = 0;
  	while (crime->timer < CRIME_MASTER_FREQ * WAIT_MS / 1000) ;
  	mips_hpt_frequency = read_c0_count() * 1000 / WAIT_MS;
  	printk("%d MHz CPU detected
  ", mips_hpt_frequency * 2 / 1000000);
  }

  void __init plat_mem_setup(void)

  {
  	board_be_init = ip32_be_init;

  #ifdef CONFIG_SGI_O2MACE_ETH
  	{
  		char *mac = ArcGetEnvironmentVariable("eaddr");
  		str2eaddr(o2meth_eaddr, mac);
  	}
  #endif
  
  #if defined(CONFIG_SERIAL_CORE_CONSOLE)
  	{
  		char* con = ArcGetEnvironmentVariable("console");
  		if (con && *con == 'd') {

  			static char options[8] __initdata;

  			char *baud = ArcGetEnvironmentVariable("dbaud");
  			if (baud)
  				strcpy(options, baud);
  			add_preferred_console("ttyS", *(con + 1) == '2' ? 1 : 0,
  					      baud ? options : NULL);
  		}
  	}
  #endif

  }