text: /*
   * 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) 1999, 2000 by Silicon Graphics
   * Copyright (C) 2003 by Ralf Baechle
   */
  #include <linux/init.h>
  #include <linux/mm.h>
  #include <asm/fixmap.h>
  #include <asm/pgtable.h>
  #include <asm/pgalloc.h>
  
  void pgd_init(unsigned long page)
  {
  	unsigned long *p, *end;
  	unsigned long entry;
  
  #ifdef __PAGETABLE_PMD_FOLDED
  	entry = (unsigned long)invalid_pte_table;
  #else
  	entry = (unsigned long)invalid_pmd_table;
  #endif
  
   	p = (unsigned long *) page;
  	end = p + PTRS_PER_PGD;
  
  	while (p < end) {
  		p[0] = entry;
  		p[1] = entry;
  		p[2] = entry;
  		p[3] = entry;
  		p[4] = entry;
  		p[5] = entry;
  		p[6] = entry;
  		p[7] = entry;
  		p += 8;
  	}
  }
  
  #ifndef __PAGETABLE_PMD_FOLDED
  void pmd_init(unsigned long addr, unsigned long pagetable)
  {
  	unsigned long *p, *end;
  
   	p = (unsigned long *) addr;
  	end = p + PTRS_PER_PMD;
  
  	while (p < end) {
  		p[0] = pagetable;
  		p[1] = pagetable;
  		p[2] = pagetable;
  		p[3] = pagetable;
  		p[4] = pagetable;
  		p[5] = pagetable;
  		p[6] = pagetable;
  		p[7] = pagetable;
  		p += 8;
  	}
  }
  #endif
  
  void __init pagetable_init(void)
  {
  	unsigned long vaddr;
  	pgd_t *pgd_base;
  
  	/* Initialize the entire pgd.  */
  	pgd_init((unsigned long)swapper_pg_dir);
  #ifndef __PAGETABLE_PMD_FOLDED
  	pmd_init((unsigned long)invalid_pmd_table, (unsigned long)invalid_pte_table);
  #endif
  	pgd_base = swapper_pg_dir;
  	/*
  	 * Fixed mappings:
  	 */
  	vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
  	fixrange_init(vaddr, vaddr + FIXADDR_SIZE, pgd_base);
  }
  