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Aquaris-M10-4G
/
arch
/
arm
/
mach-realview
/
include
/
mach
/
memory.h

memory.h 2.1 KB
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  1. /*
    2. 

  2.  *  arch/arm/mach-realview/include/mach/memory.h
    3. 

  3.  *
    4. 

  4.  *  Copyright (C) 2003 ARM Limited
    5. 

  5.  *
    6. 

  6.  * This program is free software; you can redistribute it and/or modify
    7. 

  7.  * it under the terms of the GNU General Public License as published by
    8. 

  8.  * the Free Software Foundation; either version 2 of the License, or
    9. 

  9.  * (at your option) any later version.
    10. 

  10.  *
    11. 

  11.  * This program is distributed in the hope that it will be useful,
    12. 

  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    13. 

  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14. 

  14.  * GNU General Public License for more details.
    15. 

  15.  *
    16. 

  16.  * You should have received a copy of the GNU General Public License
    17. 

  17.  * along with this program; if not, write to the Free Software
    18. 

  18.  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    19. 

  19.  */
    20. 

  20. #ifndef __ASM_ARCH_MEMORY_H
    21. 

  21. #define __ASM_ARCH_MEMORY_H
    22. 

  22. 

  23. #ifdef CONFIG_SPARSEMEM
    24. 

  24. 

  25. /*
    26. 

  26.  * Sparsemem definitions for RealView PBX.
    27. 

  27.  *
    28. 

  28.  * The RealView PBX board has another block of 512MB of RAM at 0x20000000,
    29. 

  29.  * however only the block at 0x70000000 (or the 256MB mirror at 0x00000000)
    30. 

  30.  * may be used for DMA.
    31. 

  31.  *
    32. 

  32.  * The macros below define a section size of 256MB and a non-linear virtual to
    33. 

  33.  * physical mapping:
    34. 

  34.  *
    35. 

  35.  * 256MB @ 0x00000000 -> PAGE_OFFSET
    36. 

  36.  * 512MB @ 0x20000000 -> PAGE_OFFSET + 0x10000000
    37. 

  37.  * 256MB @ 0x80000000 -> PAGE_OFFSET + 0x30000000
    38. 

  38.  */
    39. 

  39. #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
    40. 

  40. #error "SPARSEMEM not available with REALVIEW_HIGH_PHYS_OFFSET"
    41. 

  41. #endif
    42. 

  42. 

  43. #define MAX_PHYSMEM_BITS	32
    44. 

  44. #define SECTION_SIZE_BITS	28
    45. 

  45. 

  46. /* bank page offsets */
    47. 

  47. #define PAGE_OFFSET1	(PAGE_OFFSET + 0x10000000)
    48. 

  48. #define PAGE_OFFSET2	(PAGE_OFFSET + 0x30000000)
    49. 

  49. 

  50. #define PHYS_OFFSET PLAT_PHYS_OFFSET
    51. 

  51. 

  52. #define __phys_to_virt(phys)						\
    53. 

  53. 	((phys) >= 0x80000000 ?	(phys) - 0x80000000 + PAGE_OFFSET2 :	\
    54. 

  54. 	 (phys) >= 0x20000000 ?	(phys) - 0x20000000 + PAGE_OFFSET1 :	\
    55. 

  55. 	 (phys) + PAGE_OFFSET)
    56. 

  56. 

  57. #define __virt_to_phys(virt)						\
    58. 

  58. 	 ((virt) >= PAGE_OFFSET2 ? (virt) - PAGE_OFFSET2 + 0x80000000 :	\
    59. 

  59. 	  (virt) >= PAGE_OFFSET1 ? (virt) - PAGE_OFFSET1 + 0x20000000 :	\
    60. 

  60. 	  (virt) - PAGE_OFFSET)
    61. 

  61. 

  62. #endif	/* CONFIG_SPARSEMEM */
    63. 

  63. 

  64. #endif
    65.