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  1. /*
  2.  * Copyright (c) 2005 Martin Decky
  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 ppc32mm
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch/boot/boot.h>
  36. #include <arch/mm/frame.h>
  37. #include <arch/mm/memory_init.h>
  38. #include <mm/frame.h>
  39. #include <align.h>
  40. #include <macros.h>
  41.  
  42. uintptr_t last_frame = 0;
  43.  
  44. void frame_arch_init(void)
  45. {
  46.     pfn_t minconf = 2;
  47.     count_t i;
  48.     pfn_t start, conf;
  49.     size_t size;
  50.    
  51.     for (i = 0; i < bootinfo.memmap.count; i++) {
  52.         start = ADDR2PFN(ALIGN_UP(bootinfo.memmap.zones[i].start, FRAME_SIZE));
  53.         size = SIZE2FRAMES(ALIGN_DOWN(bootinfo.memmap.zones[i].size, FRAME_SIZE));
  54.        
  55.         if ((minconf < start) || (minconf >= start + size))
  56.             conf = start;
  57.         else
  58.             conf = minconf;
  59.        
  60.         zone_create(start, size, conf, 0);
  61.         if (last_frame < ALIGN_UP(bootinfo.memmap.zones[i].start + bootinfo.memmap.zones[i].size, FRAME_SIZE))
  62.             last_frame = ALIGN_UP(bootinfo.memmap.zones[i].start + bootinfo.memmap.zones[i].size, FRAME_SIZE);
  63.     }
  64.  
  65.     /* First is exception vector, second is 'implementation specific',
  66.        third and fourth is reserved, other contain real mode code */
  67.     frame_mark_unavailable(0, 8);
  68.    
  69.     /* Mark the Page Hash Table frames as unavailable */
  70.     uint32_t sdr1;
  71.     asm volatile (
  72.         "mfsdr1 %0\n"
  73.         : "=r" (sdr1)
  74.     );
  75.     frame_mark_unavailable(ADDR2PFN(sdr1 & 0xffff000), 16); // FIXME
  76. }
  77.  
  78. /** @}
  79.  */
  80.