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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.     for (i = 0; i < e820counter; i++) {
  58.         uint64_t base = e820table[i].base_address;
  59.         uint64_t size = e820table[i].size;
  60.        
  61. #ifdef __32_BITS__
  62.        
  63.         /* Ignore physical memory above 4 GB */
  64.         if ((base >> 32) != 0)
  65.             continue;
  66.        
  67.         /* Clip regions above 4 GB */
  68.         if (((base + size) >> 32) != 0)
  69.             size = 0xffffffff - base;
  70.        
  71. #endif
  72.         pfn_t pfn;
  73.         count_t count;
  74.        
  75.         if (e820table[i].type == MEMMAP_MEMORY_AVAILABLE) {
  76.             /* To be safe, make available zone possibly smaller */
  77.             pfn = ADDR2PFN(ALIGN_UP(base, FRAME_SIZE));
  78.             count = SIZE2FRAMES(ALIGN_DOWN(size, FRAME_SIZE));
  79.            
  80.             pfn_t conf;
  81.             if ((minconf < pfn) || (minconf >= pfn + count))
  82.                 conf = pfn;
  83.             else
  84.                 conf = minconf;
  85.            
  86.             zone_create(pfn, count, conf, ZONE_AVAILABLE);
  87.            
  88.             // XXX this has to be removed
  89.             if (last_frame < ALIGN_UP(base + size, FRAME_SIZE))
  90.                 last_frame = ALIGN_UP(base + size, FRAME_SIZE);
  91.         }
  92.        
  93.         if (e820table[i].type == MEMMAP_MEMORY_RESERVED) {
  94.             /* To be safe, make reserved zone possibly larger */
  95.             pfn = ADDR2PFN(ALIGN_DOWN(base, FRAME_SIZE));
  96.             count = SIZE2FRAMES(ALIGN_UP(size, FRAME_SIZE));
  97.            
  98.             zone_create(pfn, count, 0, ZONE_RESERVED);
  99.         }
  100.        
  101.         if (e820table[i].type == MEMMAP_MEMORY_ACPI) {
  102.             /* To be safe, make firmware zone possibly larger */
  103.             pfn = ADDR2PFN(ALIGN_DOWN(base, (uintptr_t) FRAME_SIZE));
  104.             count = SIZE2FRAMES(ALIGN_UP(size, (uintptr_t) FRAME_SIZE));
  105.            
  106.             zone_create(pfn, count, 0, ZONE_FIRMWARE);
  107.         }
  108.     }
  109. }
  110.  
  111. static char *e820names[] = {
  112.     "invalid",
  113.     "available",
  114.     "reserved",
  115.     "acpi",
  116.     "nvs",
  117.     "unusable"
  118. };
  119.  
  120.  
  121. void physmem_print(void)
  122. {
  123.     unsigned int i;
  124.     char *name;
  125.    
  126.     printf("Base               Size               Name\n");
  127.     printf("------------------ ------------------ ---------\n");
  128.        
  129.     for (i = 0; i < e820counter; i++) {
  130.         if (e820table[i].type <= MEMMAP_MEMORY_UNUSABLE)
  131.             name = e820names[e820table[i].type];
  132.         else
  133.             name = "invalid";
  134.        
  135.         printf("%#18llx %#18llx %s\n", e820table[i].base_address,
  136.             e820table[i].size, name);
  137.     }
  138. }
  139.  
  140.  
  141. void frame_arch_init(void)
  142. {
  143.     pfn_t minconf;
  144.    
  145.     if (config.cpu_active == 1) {
  146.         minconf = 1;
  147.        
  148. #ifdef CONFIG_SMP
  149.         minconf = max(minconf,
  150.             ADDR2PFN(AP_BOOT_OFFSET + hardcoded_unmapped_ktext_size +
  151.             hardcoded_unmapped_kdata_size));
  152. #endif
  153.         init_e820_memory(minconf);
  154.        
  155.         /* Reserve frame 0 (BIOS data) */
  156.         frame_mark_unavailable(0, 1);
  157.        
  158. #ifdef CONFIG_SMP
  159.         /* Reserve AP real mode bootstrap memory */
  160.         frame_mark_unavailable(AP_BOOT_OFFSET >> FRAME_WIDTH,
  161.             (hardcoded_unmapped_ktext_size +
  162.             hardcoded_unmapped_kdata_size) >> FRAME_WIDTH);
  163. #endif
  164.     }
  165. }
  166.  
  167. /** @}
  168.  */
  169.