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  1. /*
  2.  * Copyright (C) 2005 Jakub Jermar
  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. #include <arch/mm/frame.h>
  30. #include <mm/frame.h>
  31. #include <arch/asm/boot.h>
  32. #include <arch/mm/page.h>
  33. #include <config.h>
  34. #include <panic.h>
  35. #include <print.h>
  36. #include <arch/drivers/arc.h>
  37.  
  38. /** Create memory zones
  39.  *
  40.  * If ARC is known, read information from ARC, otherwise
  41.  * assume some defaults.
  42.  * - blacklist first FRAME because there is an exception vector
  43.  */
  44. void frame_arch_init(void)
  45. {
  46.     /* Blacklist first 4KB, exception vector */
  47.     frame_region_not_free(0, FRAME_SIZE);
  48.  
  49.     if (arc_enabled())
  50.         arc_frame_init();
  51.     else
  52.         zone_create_in_region(KA2PA(KERNEL_LOAD_ADDRESS),
  53.                       config.memory_size & ~(FRAME_SIZE-1));
  54. }
  55.