arch/arm/include/asm/fixmap.h

   1 #ifndef _ASM_FIXMAP_H
   2 #define _ASM_FIXMAP_H
   3
   4 #define FIXADDR_START           0xffc00000UL
   5 #define FIXADDR_END             0xfff00000UL
   6 #define FIXADDR_TOP             (FIXADDR_END - PAGE_SIZE)
   7
   8 #include <asm/kmap_types.h>
   9 #include <asm/pgtable.h>
  10
  11 enum fixed_addresses {
  12         FIX_EARLYCON_MEM_BASE,
  13         __end_of_permanent_fixed_addresses,
  14
  15         FIX_KMAP_BEGIN = __end_of_permanent_fixed_addresses,
  16         FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_TYPE_NR * NR_CPUS) - 1,
  17
  18         /* Support writing RO kernel text via kprobes, jump labels, etc. */
  19         FIX_TEXT_POKE0,
  20         FIX_TEXT_POKE1,
  21
  22         __end_of_fixed_addresses
  23 };
  24
  25 #define FIXMAP_PAGE_COMMON      (L_PTE_YOUNG | L_PTE_PRESENT | L_PTE_XN | L_PTE_DIRTY)
  26
  27 #define FIXMAP_PAGE_NORMAL      (FIXMAP_PAGE_COMMON | L_PTE_MT_WRITEBACK)
  28
  29 /* Used by set_fixmap_(io|nocache), both meant for mapping a device */
  30 #define FIXMAP_PAGE_IO          (FIXMAP_PAGE_COMMON | L_PTE_MT_DEV_SHARED | L_PTE_SHARED)
  31 #define FIXMAP_PAGE_NOCACHE     FIXMAP_PAGE_IO
  32
  33 void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot);
  34 void __init early_fixmap_init(void);
  35
  36 #include <asm-generic/fixmap.h>
  37
  38 #endif