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  1. /*
  2.  * Copyright (c) 2005 Martin Decky
  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. #include "main.h"
  30. #include <printf.h>
  31. #include "asm.h"
  32. #include "_components.h"
  33. #include <ofw.h>
  34. #include <align.h>
  35. #include <macros.h>
  36. #include <string.h>
  37.  
  38. #define HEAP_GAP 1024000
  39.  
  40. bootinfo_t bootinfo;
  41.  
  42.  
  43. static void check_align(const void *addr, const char *desc)
  44. {
  45.     if ((unsigned int) addr % PAGE_SIZE != 0) {
  46.         printf("Error: %s not on page boundary, halting.\n", desc);
  47.         halt();
  48.     }
  49. }
  50.  
  51.  
  52. static void fix_overlap(void *va, void **pa, const char *desc, unsigned int *top)
  53. {
  54.     if ((unsigned int) *pa + PAGE_SIZE < *top) {
  55.         printf("Warning: %s overlaps kernel physical area\n", desc);
  56.        
  57.         void *new_va = (void *) (ALIGN_UP((unsigned int) KERNEL_END + HEAP_GAP, PAGE_SIZE) + *top);
  58.         void *new_pa = (void *) (HEAP_GAP + *top);
  59.         *top += PAGE_SIZE;
  60.        
  61.         if (ofw_map(new_pa, new_va, PAGE_SIZE, 0) != 0) {
  62.             printf("Error: Unable to map page aligned memory at %L (physical %L), halting.\n", new_va, new_pa);
  63.             halt();
  64.         }
  65.        
  66.         if ((unsigned int) new_pa + PAGE_SIZE < KERNEL_SIZE) {
  67.             printf("Error: %s cannot be relocated, halting.\n", desc);
  68.             halt();
  69.         }
  70.        
  71.         printf("Relocating %L -> %L (physical %L -> %L)\n", va, new_va, *pa, new_pa);
  72.         *pa = new_pa;
  73.         memcpy(new_va, va, PAGE_SIZE);
  74.     }
  75. }
  76.  
  77. char *release = STRING(RELEASE);
  78.  
  79. #ifdef REVISION
  80.     char *revision = ", revision " STRING(REVISION);
  81. #else
  82.     char *revision = "";
  83. #endif
  84.  
  85. #ifdef TIMESTAMP
  86.     char *timestamp = "\nBuilt on " STRING(TIMESTAMP);
  87. #else
  88.     char *timestamp = "";
  89. #endif
  90.  
  91. /** Print version information. */
  92. static void version_print(void)
  93. {
  94.     printf("HelenOS PPC32 Bootloader\nRelease %s%s%s\nCopyright (c) 2006 HelenOS project\n\n", release, revision, timestamp);
  95. }
  96.  
  97. void bootstrap(void)
  98. {
  99.     version_print();
  100.    
  101.     component_t components[COMPONENTS];
  102.     init_components(components);
  103.        
  104.     unsigned int i;
  105.     for (i = 0; i < COMPONENTS; i++)
  106.         check_align(components[i].start, components[i].name);
  107.    
  108.     check_align(&real_mode, "bootstrap trampoline");
  109.     check_align(&trans, "translation table");
  110.    
  111.     if (!ofw_memmap(&bootinfo.memmap)) {
  112.         printf("Error: Unable to get memory map, halting.\n");
  113.         halt();
  114.     }
  115.    
  116.     if (bootinfo.memmap.total == 0) {
  117.         printf("Error: No memory detected, halting.\n");
  118.         halt();
  119.     }
  120.    
  121.     if (!ofw_screen(&bootinfo.screen))
  122.         printf("Warning: Unable to get screen properties.\n");
  123.    
  124.     if (!ofw_macio(&bootinfo.macio))
  125.         printf("Warning: Unable to get macio properties.\n");
  126.    
  127.     printf("Device statistics\n");
  128.    
  129.     if (bootinfo.screen.addr)
  130.         printf(" screen at %L, resolution %dx%d, %d bpp (scanline %d bytes)\n", bootinfo.screen.addr, bootinfo.screen.width, bootinfo.screen.height, bootinfo.screen.bpp, bootinfo.screen.scanline);
  131.    
  132.     if (bootinfo.macio.addr)
  133.         printf(" macio at %L (size %d bytes)\n", bootinfo.macio.addr, bootinfo.macio.size);
  134.    
  135.     void *real_mode_pa = ofw_translate(&real_mode);
  136.     void *trans_pa = ofw_translate(&trans);
  137.     void *bootinfo_pa = ofw_translate(&bootinfo);
  138.    
  139.     printf("\nMemory statistics (total %d MB)\n", bootinfo.memmap.total >> 20);
  140.     printf(" %L: boot info structure (physical %L)\n", &bootinfo, bootinfo_pa);
  141.     printf(" %L: bootstrap trampoline (physical %L)\n", &real_mode, real_mode_pa);
  142.     printf(" %L: translation table (physical %L)\n", &trans, trans_pa);
  143.     for (i = 0; i < COMPONENTS; i++)
  144.         printf(" %L: %s image (size %d bytes)\n", components[i].start, components[i].name, components[i].size);
  145.    
  146.     unsigned int top = 0;
  147.     for (i = 0; i < COMPONENTS; i++)
  148.         top += ALIGN_UP(components[i].size, PAGE_SIZE);
  149.    
  150.     unsigned int pages = ALIGN_UP(KERNEL_SIZE, PAGE_SIZE) >> PAGE_WIDTH;
  151.    
  152.     for (i = 0; i < pages; i++) {
  153.         void *pa = ofw_translate(KERNEL_START + (i << PAGE_WIDTH));
  154.         fix_overlap(KERNEL_START + (i << PAGE_WIDTH), &pa, "kernel", &top);
  155.         trans[i] = pa;
  156.     }
  157.    
  158.     bootinfo.taskmap.count = 0;
  159.     for (i = 1; i < COMPONENTS; i++) {
  160.         unsigned int component_pages = ALIGN_UP(components[i].size, PAGE_SIZE) >> PAGE_WIDTH;
  161.         unsigned int j;
  162.        
  163.         for (j = 0; j < component_pages; j++) {
  164.             void *pa = ofw_translate(components[i].start + (j << PAGE_WIDTH));
  165.             fix_overlap(components[i].start + (j << PAGE_WIDTH), &pa, components[i].name, &top);
  166.             trans[pages + j] = pa;
  167.             if (j == 0) {
  168.                 bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = (void *) (pages << PAGE_WIDTH);
  169.                 bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = components[i].size;
  170.                 strncpy(bootinfo.taskmap.tasks[bootinfo.taskmap.count].name,
  171.                     components[i].name, BOOTINFO_TASK_NAME_BUFLEN);
  172.  
  173.                 bootinfo.taskmap.count++;
  174.             }
  175.         }
  176.        
  177.         pages += component_pages;
  178.     }
  179.    
  180.     fix_overlap(&real_mode, &real_mode_pa, "bootstrap trampoline", &top);
  181.     fix_overlap(&trans, &trans_pa, "translation table", &top);
  182.     fix_overlap(&bootinfo, &bootinfo_pa, "boot info", &top);
  183.    
  184.     ofw_setup_palette();
  185.    
  186.     printf("\nBooting the kernel...\n");
  187.     jump_to_kernel(bootinfo_pa, sizeof(bootinfo), trans_pa, pages << PAGE_WIDTH, real_mode_pa, (void *) bootinfo.screen.addr, bootinfo.screen.scanline);
  188. }
  189.