reactos/boot/freeldr/freeldr/include/reactos.h

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1998-2003  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #pragma once
  21
  22 /* Base Addres of Kernel in Physical Memory */
  23 #define KERNEL_BASE_PHYS 0x800000
  24
  25 #if defined(_M_IX86)
  26
  27 /* Bits to shift to convert a Virtual Address into an Offset in the Page Table */
  28 #define PFN_SHIFT 12
  29
  30 /* Bits to shift to convert a Virtual Address into an Offset in the Page Directory */
  31 #define PDE_SHIFT 22
  32 #define PDE_SHIFT_PAE 18
  33
  34 /* Converts a Physical Address Pointer into a Page Frame Number */
  35 #define PaPtrToPfn(p) \
  36     (((ULONG_PTR)&p) >> PFN_SHIFT)
  37
  38 /* Converts a Physical Address into a Page Frame Number */
  39 #define PaToPfn(p) \
  40     ((p) >> PFN_SHIFT)
  41
  42 #define STARTUP_BASE                0xC0000000
  43 #define HAL_BASE                    0xFFC00000
  44 #define APIC_BASE                   0xFFFE0000
  45
  46 #define LowMemPageTableIndex        0
  47 #define StartupPageTableIndex       (STARTUP_BASE >> 22)
  48 #define HalPageTableIndex           (HAL_BASE >> 22)
  49
  50 typedef struct _PAGE_DIRECTORY_X86
  51 {
  52     HARDWARE_PTE Pde[1024];
  53 } PAGE_DIRECTORY_X86, *PPAGE_DIRECTORY_X86;
  54
  55 #endif
  56
  57 ///////////////////////////////////////////////////////////////////////////////////////
  58 //
  59 // ReactOS Loading Functions
  60 //
  61 ///////////////////////////////////////////////////////////////////////////////////////
  62 VOID LoadAndBootReactOS(PCSTR OperatingSystemName);
  63
  64 ///////////////////////////////////////////////////////////////////////////////////////
  65 //
  66 // ReactOS Setup Loader Functions
  67 //
  68 ///////////////////////////////////////////////////////////////////////////////////////
  69 VOID ReactOSRunSetupLoader(VOID);
  70
  71 ///////////////////////////////////////////////////////////////////////////////////////
  72 //
  73 // ARC Path Functions
  74 //
  75 ///////////////////////////////////////////////////////////////////////////////////////
  76 BOOLEAN DissectArcPath(CHAR *ArcPath, CHAR *BootPath, ULONG* BootDrive, ULONG* BootPartition);
  77 VOID ConstructArcPath(PCHAR ArcPath, PCHAR SystemFolder, ULONG Disk, ULONG Partition);
  78 ULONG ConvertArcNameToBiosDriveNumber(PCHAR ArcPath);
  79
  80 ///////////////////////////////////////////////////////////////////////////////////////
  81 //
  82 // Loader Functions And Definitions
  83 //
  84 ///////////////////////////////////////////////////////////////////////////////////////
  85 extern ROS_LOADER_PARAMETER_BLOCK LoaderBlock; /* Multiboot info structure passed to kernel */
  86 extern char                                     reactos_kernel_cmdline[255];    // Command line passed to kernel
  87 extern LOADER_MODULE            reactos_modules[64];            // Array to hold boot module info loaded for the kernel
  88 extern char                                     reactos_module_strings[64][256];        // Array to hold module names
  89 typedef struct _reactos_mem_data {
  90     unsigned long                       memory_map_descriptor_size;
  91     memory_map_t                        memory_map[32];         // Memory map
  92 } reactos_mem_data_t;
  93 extern reactos_mem_data_t reactos_mem_data;
  94 #define reactos_memory_map_descriptor_size reactos_mem_data.memory_map_descriptor_size
  95 #define reactos_memory_map reactos_mem_data.memory_map
  96
  97 VOID FASTCALL FrLdrSetupPae(ULONG Magic);
  98 VOID FASTCALL FrLdrSetupPageDirectory(VOID);
  99 VOID FASTCALL FrLdrGetPaeMode(VOID);
 100 BOOLEAN NTAPI FrLdrMapKernel(PFILE KernelImage);
 101 ULONG_PTR NTAPI FrLdrCreateModule(LPCSTR ModuleName);
 102 ULONG_PTR NTAPI FrLdrLoadModule(PFILE ModuleImage, LPCSTR ModuleName, PULONG ModuleSize);
 103 BOOLEAN NTAPI FrLdrCloseModule(ULONG_PTR ModuleBase, ULONG dwModuleSize);
 104 VOID NTAPI FrLdrStartup(ULONG Magic);
 105 typedef VOID (NTAPI *ROS_KERNEL_ENTRY_POINT)(IN PROS_LOADER_PARAMETER_BLOCK LoaderBlock);
 106
 107 PVOID
 108 NTAPI
 109 FrLdrMapImage(
 110     IN PFILE Image,
 111     IN PCHAR ShortName,
 112     IN ULONG ImageType
 113 );
 114
 115 PVOID
 116 NTAPI
 117 FrLdrReadAndMapImage(
 118     IN PFILE Image,
 119     IN PCHAR ShortName,
 120     IN ULONG ImageType
 121 );
 122
 123 PVOID
 124 NTAPI
 125 FrLdrLoadImage(
 126     IN PCHAR szFileName,
 127     IN INT nPos,
 128     IN ULONG ImageType
 129 );