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
   8 #include <asm/io.h>
   9 #include <asm/page.h>
  10
  11 void __iomem *__ioremap_pfn(unsigned long pfn, unsigned long offset,
  12                             size_t size, unsigned long flags)
  13 {
  14         if (pfn >= (0x100000000ULL >> PAGE_SHIFT))
  15                 return NULL;
  16         return (void __iomem *) (offset + (pfn << PAGE_SHIFT));
  17 }
  18 EXPORT_SYMBOL(__ioremap_pfn);
  19
  20 void __iomem *__ioremap(unsigned long phys_addr, size_t size,
  21                         unsigned long flags)
  22 {
  23         return (void __iomem *)phys_addr;
  24 }
  25 EXPORT_SYMBOL(__ioremap);
  26
  27 void __iounmap(void __iomem *addr)
  28 {
  29 }
  30 EXPORT_SYMBOL(__iounmap);