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