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  1. /*
  2.  * Copyright (C) 2001-2004 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 <mm/frame.h>
  30. #include <arch/mm/frame.h>
  31. #include <mm/as.h>
  32. #include <config.h>
  33. #include <arch/boot/boot.h>
  34. #include <arch/boot/memmap.h>
  35. #include <panic.h>
  36. #include <debug.h>
  37. #include <align.h>
  38. #include <macros.h>
  39.  
  40. #include <print.h>
  41. #include <console/cmd.h>
  42. #include <console/kconsole.h>
  43.  
  44. size_t hardcoded_unmapped_ktext_size = 0;
  45. size_t hardcoded_unmapped_kdata_size = 0;
  46.  
  47. __address last_frame = 0;
  48.  
  49. static void init_e820_memory(pfn_t minconf)
  50. {
  51.     int i;
  52.     pfn_t start, conf;
  53.     size_t size;
  54.  
  55.     for (i = 0; i < e820counter; i++) {
  56.         if (e820table[i].type == MEMMAP_MEMORY_AVAILABLE) {
  57.             start = ADDR2PFN(ALIGN_UP(e820table[i].base_address,
  58.                           FRAME_SIZE));
  59.             size = SIZE2FRAMES(ALIGN_DOWN(e820table[i].size,
  60.                            FRAME_SIZE));
  61.             if (minconf < start || minconf >= start+size)
  62.                 conf = start;
  63.             else
  64.                 conf = minconf;
  65.             zone_create(start, size, conf, 0);
  66.             if (last_frame < ALIGN_UP(e820table[i].base_address + e820table[i].size, FRAME_SIZE))
  67.                 last_frame = ALIGN_UP(e820table[i].base_address + e820table[i].size, FRAME_SIZE);
  68.         }          
  69.     }
  70. }
  71.  
  72. static int cmd_e820mem(cmd_arg_t *argv);
  73. static cmd_info_t e820_info = {
  74.     .name = "e820list",
  75.     .description = "List e820 memory.",
  76.     .func = cmd_e820mem,
  77.     .argc = 0
  78. };
  79.  
  80. static char *e820names[] = { "invalid", "available", "reserved",
  81.                  "acpi", "nvs", "unusable" };
  82.  
  83.  
  84. static int cmd_e820mem(cmd_arg_t *argv)
  85. {
  86.     int i;
  87.     char *name;
  88.  
  89.     for (i = 0; i < e820counter; i++) {
  90.         if (e820table[i].type <= MEMMAP_MEMORY_UNUSABLE)
  91.             name = e820names[e820table[i].type];
  92.         else
  93.             name = "invalid";
  94.         printf("%P %dB %s\n", e820table[i].base_address,
  95.                e820table[i].size,
  96.                name);
  97.     }          
  98.     return 0;
  99. }
  100.  
  101.  
  102. void frame_arch_init(void)
  103. {
  104.     static pfn_t minconf;
  105.  
  106.     if (config.cpu_active == 1) {
  107.         cmd_initialize(&e820_info);
  108.         cmd_register(&e820_info);
  109.  
  110.  
  111.         minconf = 1;
  112. #ifdef CONFIG_SMP
  113.         minconf = max(minconf,
  114.                   ADDR2PFN(AP_BOOT_OFFSET+hardcoded_unmapped_ktext_size + hardcoded_unmapped_kdata_size));
  115. #endif
  116. #ifdef CONFIG_SIMICS_FIX
  117.         minconf = max(minconf, ADDR2PFN(0x10000));
  118. #endif
  119.         init_e820_memory(minconf);
  120.  
  121.         /* Reserve frame 0 (BIOS data) */
  122.         frame_mark_unavailable(0, 1);
  123.        
  124. #ifdef CONFIG_SMP
  125.         /* Reserve AP real mode bootstrap memory */
  126.         frame_mark_unavailable(AP_BOOT_OFFSET >> FRAME_WIDTH,
  127.                        (hardcoded_unmapped_ktext_size + hardcoded_unmapped_kdata_size) >> FRAME_WIDTH);
  128.        
  129. #ifdef CONFIG_SIMICS_FIX
  130.         /* Don't know why, but this addresses help */
  131.         frame_mark_unavailable(0xd000 >> FRAME_WIDTH,3);
  132. #endif
  133. #endif
  134.     }
  135. }
  136.