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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. uintptr_t end_frame = 0;
  54.  
  55. static void init_e820_memory(pfn_t minconf)
  56. {
  57.     unsigned int i;
  58.     pfn_t start, conf;
  59.     size_t size;
  60.  
  61.     for (i = 0; i < e820counter; i++) {
  62.         if (e820table[i].type == MEMMAP_MEMORY_AVAILABLE) {
  63.             start = ADDR2PFN(ALIGN_UP(e820table[i].base_address, FRAME_SIZE));
  64.             size = SIZE2FRAMES(ALIGN_DOWN(e820table[i].size, FRAME_SIZE));
  65.            
  66.             if ((minconf < start) || (minconf >= start + size))
  67.                 conf = start;
  68.             else
  69.                 conf = minconf;
  70.            
  71.             zone_create(start, size, conf, 0);
  72.            
  73.             if (last_frame < ALIGN_UP(e820table[i].base_address +
  74.                 e820table[i].size, FRAME_SIZE))
  75.                 last_frame =
  76.                     ALIGN_UP(e820table[i].base_address + e820table[i].size, FRAME_SIZE);
  77.         }
  78.     }
  79.    
  80.     end_frame = last_frame;
  81. }
  82.  
  83. static char *e820names[] = {
  84.     "invalid",
  85.     "available",
  86.     "reserved",
  87.     "acpi",
  88.     "nvs",
  89.     "unusable"
  90. };
  91.  
  92.  
  93. void physmem_print(void)
  94. {
  95.     unsigned int i;
  96.     char *name;
  97.    
  98.     printf("Base               Size               Name\n");
  99.     printf("------------------ ------------------ ---------\n");
  100.        
  101.     for (i = 0; i < e820counter; i++) {
  102.         if (e820table[i].type <= MEMMAP_MEMORY_UNUSABLE)
  103.             name = e820names[e820table[i].type];
  104.         else
  105.             name = "invalid";
  106.        
  107.         printf("%#18llx %#18llx %s\n", e820table[i].base_address,
  108.             e820table[i].size, name);
  109.     }
  110. }
  111.  
  112.  
  113. void frame_arch_init(void)
  114. {
  115.     pfn_t minconf;
  116.    
  117.     if (config.cpu_active == 1) {
  118.         minconf = 1;
  119.        
  120. #ifdef CONFIG_SMP
  121.         minconf = max(minconf,
  122.             ADDR2PFN(AP_BOOT_OFFSET + hardcoded_unmapped_ktext_size +
  123.             hardcoded_unmapped_kdata_size));
  124. #endif
  125.         init_e820_memory(minconf);
  126.        
  127.         /* Reserve frame 0 (BIOS data) */
  128.         frame_mark_unavailable(0, 1);
  129.        
  130. #ifdef CONFIG_SMP
  131.         /* Reserve AP real mode bootstrap memory */
  132.         frame_mark_unavailable(AP_BOOT_OFFSET >> FRAME_WIDTH,
  133.             (hardcoded_unmapped_ktext_size +
  134.             hardcoded_unmapped_kdata_size) >> FRAME_WIDTH);
  135. #endif
  136.     }
  137. }
  138.  
  139. /** @}
  140.  */
  141.