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kernel/linux-rt-4.4.41/arch/mips/fw/arc/init.c 1.24 KB
5113f6f70   김현기   kernel add
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  /*
   * 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.
   *
   * PROM library initialisation code.
   *
   * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
   */
  #include <linux/init.h>
  #include <linux/kernel.h>
  
  #include <asm/bootinfo.h>
  #include <asm/sgialib.h>
  #include <asm/smp-ops.h>
  
  #undef DEBUG_PROM_INIT
  
  /* Master romvec interface. */
  struct linux_romvec *romvec;
  int prom_argc;
  LONG *_prom_argv, *_prom_envp;
  
  void __init prom_init(void)
  {
  	PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK;
  
  	romvec = ROMVECTOR;
  
  	prom_argc = fw_arg0;
  	_prom_argv = (LONG *) fw_arg1;
  	_prom_envp = (LONG *) fw_arg2;
  
  	if (pb->magic != 0x53435241) {
  		printk(KERN_CRIT "Aieee, bad prom vector magic %08lx
  ",
  		       (unsigned long) pb->magic);
  		while(1)
  			;
  	}
  
  	prom_init_cmdline();
  	prom_identify_arch();
  	printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d
  ",
  	       pb->ver, pb->rev);
  	prom_meminit();
  
  #ifdef DEBUG_PROM_INIT
  	pr_info("Press a key to reboot
  ");
  	ArcRead(0, &c, 1, &cnt);
  	ArcEnterInteractiveMode();
  #endif
  #ifdef CONFIG_SGI_IP27
  	{
  		extern struct plat_smp_ops ip27_smp_ops;
  
  		register_smp_ops(&ip27_smp_ops);
  	}
  #endif
  }