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 #ifndef __REACTOS_H
  21 #define __REACTOS_H
  22
  23 /* Base Addres of Kernel in Physical Memory */
  24 #define KERNEL_BASE_PHYS 0x800000
  25
  26 #if defined(_M_IX86)
  27
  28 /* Bits to shift to convert a Virtual Address into an Offset in the Page Table */
  29 #define PFN_SHIFT 12
  30
  31 /* Bits to shift to convert a Virtual Address into an Offset in the Page Directory */
  32 #define PDE_SHIFT 22
  33 #define PDE_SHIFT_PAE 18
  34
  35 /* Converts a Physical Address Pointer into a Page Frame Number */
  36 #define PaPtrToPfn(p) \
  37     (((ULONG_PTR)&p) >> PFN_SHIFT)
  38
  39 /* Converts a Physical Address into a Page Frame Number */
  40 #define PaToPfn(p) \
  41     ((p) >> PFN_SHIFT)
  42
  43 #define STARTUP_BASE                0xC0000000
  44 #define HAL_BASE                    0xFFC00000
  45 #define APIC_BASE                   0xFFFE0000
  46
  47 #define LowMemPageTableIndex        0
  48 #define StartupPageTableIndex       (STARTUP_BASE >> 22)
  49 #define HalPageTableIndex           (HAL_BASE >> 22)
  50
  51 typedef struct _PAGE_DIRECTORY_X86
  52 {
  53     HARDWARE_PTE Pde[1024];
  54 } PAGE_DIRECTORY_X86, *PPAGE_DIRECTORY_X86;
  55
  56 #endif
  57
  58 ///////////////////////////////////////////////////////////////////////////////////////
  59 //
  60 // ReactOS Loading Functions
  61 //
  62 ///////////////////////////////////////////////////////////////////////////////////////
  63 VOID LoadAndBootReactOS(PCSTR OperatingSystemName);
  64
  65 ///////////////////////////////////////////////////////////////////////////////////////
  66 //
  67 // ReactOS Setup Loader Functions
  68 //
  69 ///////////////////////////////////////////////////////////////////////////////////////
  70 VOID ReactOSRunSetupLoader(VOID);
  71
  72 ///////////////////////////////////////////////////////////////////////////////////////
  73 //
  74 // ARC Path Functions
  75 //
  76 ///////////////////////////////////////////////////////////////////////////////////////
  77 BOOLEAN DissectArcPath(CHAR *ArcPath, CHAR *BootPath, ULONG* BootDrive, ULONG* BootPartition);
  78 VOID ConstructArcPath(PCHAR ArcPath, PCHAR SystemFolder, ULONG Disk, ULONG Partition);
  79 ULONG ConvertArcNameToBiosDriveNumber(PCHAR ArcPath);
  80
  81 ///////////////////////////////////////////////////////////////////////////////////////
  82 //
  83 // Loader Functions And Definitions
  84 //
  85 ///////////////////////////////////////////////////////////////////////////////////////
  86 extern ROS_LOADER_PARAMETER_BLOCK LoaderBlock; /* Multiboot info structure passed to kernel */
  87 extern char                                     reactos_kernel_cmdline[255];    // Command line passed to kernel
  88 extern LOADER_MODULE            reactos_modules[64];            // Array to hold boot module info loaded for the kernel
  89 extern char                                     reactos_module_strings[64][256];        // Array to hold module names
  90 typedef struct _reactos_mem_data {
  91     unsigned long                       memory_map_descriptor_size;
  92     memory_map_t                        memory_map[32];         // Memory map
  93 } reactos_mem_data_t;
  94 extern reactos_mem_data_t reactos_mem_data;
  95 #define reactos_memory_map_descriptor_size reactos_mem_data.memory_map_descriptor_size
  96 #define reactos_memory_map reactos_mem_data.memory_map
  97
  98 VOID FASTCALL FrLdrSetupPae(ULONG Magic);
  99 VOID FASTCALL FrLdrSetupPageDirectory(VOID);
 100 VOID FASTCALL FrLdrGetPaeMode(VOID);
 101 BOOLEAN NTAPI FrLdrMapKernel(PFILE KernelImage);
 102 ULONG_PTR NTAPI FrLdrCreateModule(LPCSTR ModuleName);
 103 ULONG_PTR NTAPI FrLdrLoadModule(PFILE ModuleImage, LPCSTR ModuleName, PULONG ModuleSize);
 104 BOOLEAN NTAPI FrLdrCloseModule(ULONG_PTR ModuleBase, ULONG dwModuleSize);
 105 VOID NTAPI FrLdrStartup(ULONG Magic);
 106 typedef VOID (NTAPI *ROS_KERNEL_ENTRY_POINT)(IN PROS_LOADER_PARAMETER_BLOCK LoaderBlock);
 107
 108 PVOID
 109 NTAPI
 110 FrLdrMapImage(
 111     IN PFILE Image,
 112     IN PCHAR ShortName,
 113     IN ULONG ImageType
 114 );
 115
 116 PVOID
 117 NTAPI
 118 FrLdrReadAndMapImage(
 119     IN PFILE Image,
 120     IN PCHAR ShortName,
 121     IN ULONG ImageType
 122 );
 123
 124 PVOID
 125 NTAPI
 126 FrLdrLoadImage(
 127     IN PCHAR szFileName,
 128     IN INT nPos,
 129     IN ULONG ImageType
 130 );
 131
 132 #endif // defined __REACTOS_H