root/arch/unicore32/include/asm/pgtable-hwdef.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * linux/arch/unicore32/include/asm/pgtable-hwdef.h
   4  *
   5  * Code specific to PKUnity SoC and UniCore ISA
   6  *
   7  * Copyright (C) 2001-2010 GUAN Xue-tao
   8  */
   9 #ifndef __UNICORE_PGTABLE_HWDEF_H__
  10 #define __UNICORE_PGTABLE_HWDEF_H__
  11 
  12 /*
  13  * Hardware page table definitions.
  14  *
  15  * + Level 1 descriptor (PMD)
  16  *   - common
  17  */
  18 #define PMD_TYPE_MASK           (3 << 0)
  19 #define PMD_TYPE_TABLE          (0 << 0)
  20 /*#define PMD_TYPE_LARGE        (1 << 0) */
  21 #define PMD_TYPE_INVALID        (2 << 0)
  22 #define PMD_TYPE_SECT           (3 << 0)
  23 
  24 #define PMD_PRESENT             (1 << 2)
  25 #define PMD_YOUNG               (1 << 3)
  26 
  27 /*#define PMD_SECT_DIRTY        (1 << 4) */
  28 #define PMD_SECT_CACHEABLE      (1 << 5)
  29 #define PMD_SECT_EXEC           (1 << 6)
  30 #define PMD_SECT_WRITE          (1 << 7)
  31 #define PMD_SECT_READ           (1 << 8)
  32 
  33 /*
  34  * + Level 2 descriptor (PTE)
  35  *   - common
  36  */
  37 #define PTE_TYPE_MASK           (3 << 0)
  38 #define PTE_TYPE_SMALL          (0 << 0)
  39 #define PTE_TYPE_MIDDLE         (1 << 0)
  40 #define PTE_TYPE_LARGE          (2 << 0)
  41 #define PTE_TYPE_INVALID        (3 << 0)
  42 
  43 #define PTE_PRESENT             (1 << 2)
  44 #define PTE_YOUNG               (1 << 3)
  45 #define PTE_DIRTY               (1 << 4)
  46 #define PTE_CACHEABLE           (1 << 5)
  47 #define PTE_EXEC                (1 << 6)
  48 #define PTE_WRITE               (1 << 7)
  49 #define PTE_READ                (1 << 8)
  50 
  51 #endif