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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.  */
  35.  
  36.  
  37. #include "main.h"
  38. #include "asm.h"
  39. #include "_components.h"
  40. #include <printf.h>
  41.  
  42. #include "mm.h"
  43.  
  44. /** Kernel entry point address. */
  45. #define KERNEL_VIRTUAL_ADDRESS 0x80150000
  46.  
  47.  
  48. char *release = RELEASE;
  49.  
  50. #ifdef REVISION
  51.     char *revision = ", revision " REVISION;
  52. #else
  53.     char *revision = "";
  54. #endif
  55.  
  56. #ifdef TIMESTAMP
  57.     char *timestamp = "\nBuilt on " TIMESTAMP;
  58. #else
  59.     char *timestamp = "";
  60. #endif
  61.  
  62.  
  63. /** Prints bootloader version information. */
  64. static void version_print(void)
  65. {
  66.     printf("HelenOS ARM32 Bootloader\nRelease %s%s%s\nCopyright (c) 2007 HelenOS project\n",
  67.         release, revision, timestamp);
  68. }
  69.  
  70. /** Copies all images (kernel + user tasks) to #KERNEL_VIRTUAL_ADDRESS and jumps there. */
  71. void bootstrap(void)
  72. {
  73.     mmu_start();
  74.     version_print();
  75.  
  76.     component_t components[COMPONENTS];
  77.     bootinfo_t bootinfo;
  78.     init_components(components);
  79.    
  80.     printf("\nMemory statistics\n");
  81.     printf(" kernel entry point at %L\n", KERNEL_VIRTUAL_ADDRESS);
  82.     printf(" %L: boot info structure\n", &bootinfo);
  83.  
  84.     unsigned int i, j;
  85.     for (i = 0; i < COMPONENTS; i++) {
  86.         printf(" %L: %s image (size %d bytes)\n",
  87.             components[i].start, components[i].name, components[i].size);
  88.     }
  89.  
  90.     printf("\nCopying components\n");
  91.  
  92.     unsigned int top = 0;
  93.     bootinfo.cnt = 0;
  94.     for (i = 0; i < COMPONENTS; i++) {
  95.         printf(" %s...", components[i].name);
  96.         top = ALIGN_UP(top, PAGE_SIZE);
  97.         memcpy(((void *) KERNEL_VIRTUAL_ADDRESS) + top, components[i].start, components[i].size);
  98.         if (i > 0) {
  99.             bootinfo.tasks[bootinfo.cnt].addr = ((void *) KERNEL_VIRTUAL_ADDRESS) + top;
  100.             bootinfo.tasks[bootinfo.cnt].size = components[i].size;
  101.             bootinfo.cnt++;
  102.         }
  103.         top += components[i].size;
  104.         printf("done.\n");
  105.     }
  106.    
  107.     printf("\nBooting the kernel...\n");
  108.     jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, &bootinfo, sizeof(bootinfo));
  109. }
  110.  
  111. /** @}
  112.  */
  113.  
  114.