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  1. /*
  2.  * Copyright (c) 2008 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. /** @addtogroup ia32mm 
  30.  * @{
  31.  */
  32. /** @file
  33.  * @ingroup ia32mm, amd64mm
  34.  */
  35.  
  36. #include <mm/frame.h>
  37. #include <arch/mm/frame.h>
  38. #include <mm/as.h>
  39. #include <config.h>
  40. #include <arch/boot/boot.h>
  41. #include <arch/boot/memmap.h>
  42. #include <panic.h>
  43. #include <debug.h>
  44. #include <align.h>
  45. #include <macros.h>
  46.  
  47. #include <print.h>
  48.  
  49. size_t hardcoded_unmapped_ktext_size = 0;
  50. size_t hardcoded_unmapped_kdata_size = 0;
  51.  
  52. uintptr_t last_frame = 0;
  53.  
  54. static void init_e820_memory(pfn_t minconf)
  55. {
  56.     unsigned int i;
  57.     pfn_t start, conf;
  58.     size_t size;
  59.  
  60.     for (i = 0; i < e820counter; i++) {
  61.         if (e820table[i].type == MEMMAP_MEMORY_AVAILABLE) {
  62.             start = ADDR2PFN(ALIGN_UP(e820table[i].base_address, FRAME_SIZE));
  63.             size = SIZE2FRAMES(ALIGN_DOWN(e820table[i].size, FRAME_SIZE));
  64.            
  65.             if ((minconf < start) || (minconf >= start + size))
  66.                 conf = start;
  67.             else
  68.                 conf = minconf;
  69.            
  70.             zone_create(start, size, conf, 0);
  71.            
  72.             if (last_frame < ALIGN_UP(e820table[i].base_address +
  73.                 e820table[i].size, FRAME_SIZE))
  74.                 last_frame =
  75.                     ALIGN_UP(e820table[i].base_address + e820table[i].size, FRAME_SIZE);
  76.         }          
  77.     }
  78. }
  79.  
  80. static char *e820names[] = {
  81.     "invalid",
  82.     "available",
  83.     "reserved",
  84.     "acpi",
  85.     "nvs",
  86.     "unusable"
  87. };
  88.  
  89.  
  90. void physmem_print(void)
  91. {
  92.     unsigned int i;
  93.     char *name;
  94.    
  95.     printf("Base               Size               Name\n");
  96.     printf("------------------ ------------------ ---------\n");
  97.        
  98.     for (i = 0; i < e820counter; i++) {
  99.         if (e820table[i].type <= MEMMAP_MEMORY_UNUSABLE)
  100.             name = e820names[e820table[i].type];
  101.         else
  102.             name = "invalid";
  103.        
  104.         printf("%#18llx %#18llx %s\n", e820table[i].base_address,
  105.             e820table[i].size, name);
  106.     }
  107. }
  108.  
  109.  
  110. void frame_arch_init(void)
  111. {
  112.     pfn_t minconf;
  113.    
  114.     if (config.cpu_active == 1) {
  115.         minconf = 1;
  116. #ifdef CONFIG_SMP
  117.         minconf = max(minconf,
  118.             ADDR2PFN(AP_BOOT_OFFSET + hardcoded_unmapped_ktext_size +
  119.             hardcoded_unmapped_kdata_size));
  120. #endif
  121.         init_e820_memory(minconf);
  122.  
  123.         /* Reserve frame 0 (BIOS data) */
  124.         frame_mark_unavailable(0, 1);
  125.        
  126. #ifdef CONFIG_SMP
  127.         /* Reserve AP real mode bootstrap memory */
  128.         frame_mark_unavailable(AP_BOOT_OFFSET >> FRAME_WIDTH,
  129.             (hardcoded_unmapped_ktext_size +
  130.             hardcoded_unmapped_kdata_size) >> FRAME_WIDTH);
  131. #endif
  132.     }
  133. }
  134.  
  135. /** @}
  136.  */
  137.