Subversion Repositories HelenOS

Rev

Rev 2927 | Rev 4344 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  1. /*
  2.  * Copyright (c) 2007 Pavel Jancik, Michal Kebrt
  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 arm32mm
  30.  * @{
  31.  */
  32. /** @file
  33.  *  @brief Frame related functions.
  34.  */
  35.  
  36. #include <mm/frame.h>
  37. #include <arch/mm/frame.h>
  38. #include <arch/machine.h>
  39. #include <config.h>
  40. #include <arch/debug/print.h>
  41.  
  42. /** Address of the last frame in the memory. */
  43. uintptr_t last_frame = 0;
  44. uintptr_t end_frame = 0;
  45.  
  46. /** Creates memory zones. */
  47. void frame_arch_init(void)
  48. {
  49.     /* all memory as one zone */
  50.     zone_create(0, ADDR2PFN(machine_get_memory_size()),
  51.         BOOT_PAGE_TABLE_START_FRAME + BOOT_PAGE_TABLE_SIZE_IN_FRAMES, 0);
  52.     last_frame = machine_get_memory_size();
  53.     end_frame = last_frame;
  54.    
  55.     /* blacklist boot page table */
  56.     frame_mark_unavailable(BOOT_PAGE_TABLE_START_FRAME,
  57.         BOOT_PAGE_TABLE_SIZE_IN_FRAMES);
  58. }
  59.  
  60. /** Frees the boot page table. */
  61. void boot_page_table_free(void)
  62. {
  63.     int i;
  64.     for (i = 0; i < BOOT_PAGE_TABLE_SIZE_IN_FRAMES; i++) {
  65.         frame_free(i * FRAME_SIZE + BOOT_PAGE_TABLE_ADDRESS);
  66.     }
  67. }
  68.  
  69. /** @}
  70.  */
  71.