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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. #include <string.h>
  45.  
  46. #include "mm.h"
  47.  
  48. /** Kernel entry point address. */
  49. #define KERNEL_VIRTUAL_ADDRESS 0x80200000
  50.  
  51.  
  52. char *release = STRING(RELEASE);
  53.  
  54. #ifdef REVISION
  55.     char *revision = ", revision " STRING(REVISION);
  56. #else
  57.     char *revision = "";
  58. #endif
  59.  
  60. #ifdef TIMESTAMP
  61.     char *timestamp = "\nBuilt on " STRING(TIMESTAMP);
  62. #else
  63.     char *timestamp = "";
  64. #endif
  65.  
  66.  
  67. /** Prints bootloader version information. */
  68. static void version_print(void)
  69. {
  70.     printf("HelenOS ARM32 Bootloader\nRelease %s%s%s\nCopyright (c) 2009 HelenOS project\n",
  71.         release, revision, timestamp);
  72. }
  73.  
  74.  
  75. /** Copies all images (kernel + user tasks) to #KERNEL_VIRTUAL_ADDRESS and jumps there. */
  76. void bootstrap(void)
  77. {
  78.     mmu_start();
  79.     version_print();
  80.  
  81.     component_t components[COMPONENTS];
  82.     init_components(components);
  83.    
  84.     bootinfo_t bootinfo;
  85.    
  86.     printf("\nMemory statistics\n");
  87.     printf(" kernel entry point at %L\n", KERNEL_VIRTUAL_ADDRESS);
  88.     printf(" %L: boot info structure\n", &bootinfo);
  89.  
  90.     unsigned int top = 0;
  91.     bootinfo.cnt = 0;
  92.     unsigned int i, j;
  93.     for (i = 0; i < COMPONENTS; i++) {
  94.         top = ALIGN_UP(top, KERNEL_PAGE_SIZE);
  95.         if (i > 0) {
  96.             bootinfo.tasks[bootinfo.cnt].addr = ((void *) KERNEL_VIRTUAL_ADDRESS) + top;
  97.             bootinfo.tasks[bootinfo.cnt].size = components[i].size;
  98.             strncpy(bootinfo.tasks[bootinfo.cnt].name,
  99.                 components[i].name, BOOTINFO_TASK_NAME_BUFLEN);
  100.             bootinfo.cnt++;
  101.         }
  102.         top += components[i].size;
  103.     }
  104.     j = bootinfo.cnt - 1;
  105.  
  106.     printf("\nCopying components\n");
  107.     printf("Component\tAddress\t\tSize (Bytes)\n");
  108.     printf("============================================\n");
  109.     for (i = COMPONENTS - 1; i > 0; i--, j--) {
  110.         printf("%s\t\t0x%x\t%d\n", components[i].name, bootinfo.tasks[j].addr, components[i].size);
  111.         memcpy((void *)bootinfo.tasks[j].addr, components[i].start,
  112.             components[i].size);
  113.     }
  114.     printf("KERNEL\t\t0x%x\t%d\n", KERNEL_VIRTUAL_ADDRESS, components[0].size);
  115.  
  116.     memcpy((void *)KERNEL_VIRTUAL_ADDRESS, components[0].start,
  117.         components[0].size);
  118.  
  119.     printf("\nBooting the kernel...\n");
  120.     jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, &bootinfo);
  121. }
  122.  
  123. /** @}
  124.  */
  125.  
  126.