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  1. /*
  2.  * Copyright (c) 2007 Michal Kebrt
  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.  
  30. /** @addtogroup arm32boot
  31.  * @{
  32.  */
  33. /** @file
  34.  *  @brief Bootstrap.
  35.  */
  36.  
  37.  
  38. #include "main.h"
  39. #include "asm.h"
  40. #include "_components.h"
  41. #include <printf.h>
  42. #include <align.h>
  43. #include <macros.h>
  44.  
  45. #include "mm.h"
  46.  
  47. /** Kernel entry point address. */
  48. #define KERNEL_VIRTUAL_ADDRESS 0x80200000
  49.  
  50.  
  51. char *release = STRING(RELEASE);
  52.  
  53. #ifdef REVISION
  54.     char *revision = ", revision " STRING(REVISION);
  55. #else
  56.     char *revision = "";
  57. #endif
  58.  
  59. #ifdef TIMESTAMP
  60.     char *timestamp = "\nBuilt on " STRING(TIMESTAMP);
  61. #else
  62.     char *timestamp = "";
  63. #endif
  64.  
  65.  
  66. /** Prints bootloader version information. */
  67. static void version_print(void)
  68. {
  69.     printf("HelenOS ARM32 Bootloader\nRelease %s%s%s\nCopyright (c) 2007 HelenOS project\n",
  70.         release, revision, timestamp);
  71. }
  72.  
  73.  
  74. /** Copies all images (kernel + user tasks) to #KERNEL_VIRTUAL_ADDRESS and jumps there. */
  75. void bootstrap(void)
  76. {
  77.     mmu_start();
  78.     version_print();
  79.  
  80.     component_t components[COMPONENTS];
  81.     init_components(components);
  82.    
  83.     bootinfo_t bootinfo;
  84.    
  85.     printf("\nMemory statistics\n");
  86.     printf(" kernel entry point at %L\n", KERNEL_VIRTUAL_ADDRESS);
  87.     printf(" %L: boot info structure\n", &bootinfo);
  88.  
  89.     unsigned int i, j;
  90.     for (i = 0; i < COMPONENTS; i++) {
  91.         printf(" %L: %s image (size %d bytes)\n",
  92.             components[i].start, components[i].name, components[i].size);
  93.     }
  94.  
  95.     printf("\nCopying components\n");
  96.  
  97.     unsigned int top = 0;
  98.     bootinfo.cnt = 0;
  99.     for (i = 0; i < COMPONENTS; i++) {
  100.         printf(" %s...", components[i].name);
  101.         top = ALIGN_UP(top, KERNEL_PAGE_SIZE);
  102.         memcpy(((void *) KERNEL_VIRTUAL_ADDRESS) + top, components[i].start, components[i].size);
  103.         if (i > 0) {
  104.             bootinfo.tasks[bootinfo.cnt].addr = ((void *) KERNEL_VIRTUAL_ADDRESS) + top;
  105.             bootinfo.tasks[bootinfo.cnt].size = components[i].size;
  106.             bootinfo.cnt++;
  107.         }
  108.         top += components[i].size;
  109.         printf("done.\n");
  110.     }
  111.    
  112.     printf("\nBooting the kernel...\n");
  113.     jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, &bootinfo);
  114. }
  115.  
  116. /** @}
  117.  */
  118.  
  119.