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