/*
   * ip22-setup.c: SGI specific setup, including init of the feature struct.
   *

   * Copyright (C) 1996 David S. Miller (davem@davemloft.net)

   * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
   */

  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <linux/kdev_t.h>
  #include <linux/types.h>
  #include <linux/module.h>
  #include <linux/console.h>
  #include <linux/sched.h>
  #include <linux/tty.h>
  
  #include <asm/addrspace.h>
  #include <asm/bcache.h>
  #include <asm/bootinfo.h>
  #include <asm/irq.h>
  #include <asm/reboot.h>
  #include <asm/time.h>

  #include <asm/io.h>
  #include <asm/traps.h>
  #include <asm/sgialib.h>
  #include <asm/sgi/mc.h>
  #include <asm/sgi/hpc3.h>
  #include <asm/sgi/ip22.h>

  extern void ip22_be_init(void) __init;

  void __init plat_mem_setup(void)

  {
  	char *ctype;

  	char *cserial;

  
  	board_be_init = ip22_be_init;

  
  	/* Init the INDY HPC I/O controller.  Need to call this before
  	 * fucking with the memory controller because it needs to know the
  	 * boardID and whether this is a Guiness or a FullHouse machine.
  	 */
  	sgihpc_init();
  
  	/* Init INDY memory controller. */
  	sgimc_init();
  
  #ifdef CONFIG_BOARD_SCACHE
  	/* Now enable boardcaches, if any. */
  	indy_sc_init();
  #endif
  
  	/* Set EISA IO port base for Indigo2
  	 * ioremap cannot fail */
  	set_io_port_base((unsigned long)ioremap(0x00080000,
  						0x1fffffff - 0x00080000));
  	/* ARCS console environment variable is set to "g?" for
  	 * graphics console, it is set to "d" for the first serial
  	 * line and "d2" for the second serial line.

  	 *
  	 * Need to check if the case is 'g' but no keyboard:
  	 * (ConsoleIn/Out = serial)

  	 */
  	ctype = ArcGetEnvironmentVariable("console");

  	cserial = ArcGetEnvironmentVariable("ConsoleOut");
  
  	if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {

  		static char options[8] __initdata;

  		char *baud = ArcGetEnvironmentVariable("dbaud");
  		if (baud)
  			strcpy(options, baud);
  		add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0,
  				      baud ? options : NULL);
  	} else if (!ctype || *ctype != 'g') {

  		/* Use ARC if we don't want serial ('d') or graphics ('g'). */

  		prom_flags |= PROM_FLAG_USE_AS_CONSOLE;
  		add_preferred_console("arc", 0, NULL);
  	}

  }