/*

   * arch/sh/mm/nommu.c

   *

   * Various helper routines and stubs for MMUless SH.

   *

   * Copyright (C) 2002 - 2009 Paul Mundt

   *
   * Released under the terms of the GNU GPL v2.0.
   */
  #include <linux/kernel.h>

  #include <linux/init.h>
  #include <linux/string.h>

  #include <linux/mm.h>

  #include <asm/pgtable.h>

  #include <asm/tlbflush.h>

  #include <asm/page.h>
  #include <asm/uaccess.h>

  
  /*
   * Nothing too terribly exciting here ..
   */

  void copy_page(void *to, void *from)
  {
  	memcpy(to, from, PAGE_SIZE);
  }
  
  __kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n)
  {
  	memcpy(to, from, n);
  	return 0;
  }
  
  __kernel_size_t __clear_user(void *to, __kernel_size_t n)
  {
  	memset(to, 0, n);
  	return 0;
  }

  void local_flush_tlb_all(void)

  {
  	BUG();
  }

  void local_flush_tlb_mm(struct mm_struct *mm)

  {
  	BUG();
  }

  void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,

  			    unsigned long end)
  {
  	BUG();
  }

  void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)

  {
  	BUG();
  }

  void local_flush_tlb_one(unsigned long asid, unsigned long page)

  {
  	BUG();
  }

  void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)

  {
  	BUG();
  }

  void __flush_tlb_global(void)
  {
  }

  void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
  {
  }

  void __init kmap_coherent_init(void)
  {
  }
  
  void *kmap_coherent(struct page *page, unsigned long addr)
  {
  	BUG();
  	return NULL;
  }

  void kunmap_coherent(void *kvaddr)

  {
  	BUG();
  }

  void __init page_table_range_init(unsigned long start, unsigned long end,
  				  pgd_t *pgd_base)
  {
  }

  
  void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
  {
  }

  
  void pgtable_cache_init(void)
  {
  }