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  1. /*
  2.  * Copyright (C) 2005 Josef Cejka
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29.  /** @addtogroup ia32  
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef __ia32_MEMMAP_H__
  36. #define __ia32_MEMMAP_H__
  37.  
  38. /* E820h memory range types - other values*/
  39.     /* Free memory */
  40. #define MEMMAP_MEMORY_AVAILABLE 1
  41.     /* Not available for OS */
  42. #define MEMMAP_MEMORY_RESERVED  2
  43.     /* OS may use it after reading ACPI table */
  44. #define MEMMAP_MEMORY_ACPI  3
  45.     /* Unusable, required to be saved and restored across an NVS sleep */
  46. #define MEMMAP_MEMORY_NVS   4
  47.     /* Corrupted memory */
  48. #define MEMMAP_MEMORY_UNUSABLE  5
  49.  
  50.      /* size of one entry */
  51. #define MEMMAP_E820_RECORD_SIZE 20
  52.     /* maximum entries */
  53. #define MEMMAP_E820_MAX_RECORDS 32
  54.  
  55.  
  56. #ifndef __ASM__
  57.  
  58. #include <arch/types.h>
  59.  
  60. struct e820memmap_ {
  61.     uint64_t base_address;
  62.     uint64_t size;
  63.     uint32_t type;
  64. } __attribute__ ((packed));
  65.  
  66. extern struct e820memmap_ e820table[MEMMAP_E820_MAX_RECORDS];
  67.  
  68. extern uint8_t e820counter;
  69.  
  70. extern uint32_t e801memorysize; /**< Size of available memory in KB. */
  71.  
  72. #endif
  73.  
  74. #endif
  75.  
  76.  /** @}
  77.  */
  78.  
  79.