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  1. /*
  2.  * Copyright (c) 2009 Jiri Svoboda
  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. /** @addtogroup genarch
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_MULTIBOOT_H_
  36. #define KERN_MULTIBOOT_H_
  37.  
  38. #include <arch/types.h>
  39. #include <arch/boot/memmap.h>
  40.  
  41. /** Multiboot 32-bit address. */
  42. typedef uint32_t mbaddr_t;
  43.  
  44. /** Multiboot mod structure */
  45. typedef struct {
  46.     mbaddr_t start;
  47.     mbaddr_t end;
  48.     mbaddr_t string;
  49.     uint32_t reserved;
  50. } __attribute__ ((packed)) multiboot_mod_t;
  51.  
  52. /** Multiboot mmap structure */
  53. typedef struct {
  54.     uint32_t size;
  55.     e820memmap_t mm_info;
  56. } __attribute__ ((packed)) multiboot_mmap_t;
  57.  
  58. /** Multiboot information structure */
  59. typedef struct {
  60.     uint32_t flags;
  61.     uint32_t mem_lower;
  62.     uint32_t mem_upper;
  63.    
  64.     uint32_t boot_device;
  65.     uint32_t cmdline;
  66.    
  67.     uint32_t mods_count;
  68.     mbaddr_t mods_addr;
  69.    
  70.     uint32_t syms[4];
  71.    
  72.     uint32_t mmap_length;
  73.     mbaddr_t mmap_addr;
  74.    
  75.     /* ... */
  76. } __attribute__ ((packed)) multiboot_info_t;
  77.  
  78. enum multiboot_info_flags {
  79.     MBINFO_FLAGS_MEM     = 0x01,
  80.     MBINFO_FLAGS_BOOT    = 0x02,
  81.     MBINFO_FLAGS_CMDLINE = 0x04,
  82.     MBINFO_FLAGS_MODS    = 0x08,
  83.     MBINFO_FLAGS_SYMS1   = 0x10,
  84.     MBINFO_FLAGS_SYMS2   = 0x20,
  85.     MBINFO_FLAGS_MMAP    = 0x40
  86.    
  87.     /* ... */
  88. };
  89.  
  90. #define MULTIBOOT_LOADER_MAGIC  0x2BADB002
  91.  
  92. /** Convert 32-bit multiboot address to a pointer. */
  93. #define MULTIBOOT_PTR(mba) ((void *)(uintptr_t) (mba))
  94.  
  95. extern void multiboot_info_parse(uint32_t, const multiboot_info_t *);
  96.  
  97. #endif
  98.  
  99. /** @}
  100.  */
  101.