arch/arm/mm/nommu.c

   1 /*
   2  *  linux/arch/arm/mm/nommu.c
   3  *
   4  * ARM uCLinux supporting functions.
   5  */
   6 #include <linux/module.h>
   7 #include <linux/mm.h>
   8 #include <linux/pagemap.h>
   9
  10 #include <asm/cacheflush.h>
  11 #include <asm/io.h>
  12 #include <asm/page.h>
  13
  14 void flush_dcache_page(struct page *page)
  15 {
  16         __cpuc_flush_dcache_page(page_address(page));
  17 }
  18 EXPORT_SYMBOL(flush_dcache_page);
  19
  20 void __iomem *__ioremap_pfn(unsigned long pfn, unsigned long offset,
  21                             size_t size, unsigned long flags)
  22 {
  23         if (pfn >= (0x100000000ULL >> PAGE_SHIFT))
  24                 return NULL;
  25         return (void __iomem *) (offset + (pfn << PAGE_SHIFT));
  26 }
  27 EXPORT_SYMBOL(__ioremap_pfn);
  28
  29 void __iomem *__ioremap(unsigned long phys_addr, size_t size,
  30                         unsigned long flags)
  31 {
  32         return (void __iomem *)phys_addr;
  33 }
  34 EXPORT_SYMBOL(__ioremap);
  35
  36 void __iounmap(void __iomem *addr)
  37 {
  38 }
  39 EXPORT_SYMBOL(__iounmap);