reactos/boot/environ/lib/bootlib.c

   1 /*
   2  * COPYRIGHT:       See COPYING.ARM in the top level directory
   3  * PROJECT:         ReactOS UEFI Boot Library
   4  * FILE:            boot/environ/lib/bootlib.c
   5  * PURPOSE:         Boot Library Initialization
   6  * PROGRAMMER:      Alex Ionescu (alex.ionescu@reactos.org)
   7  */
   8
   9 /* INCLUDES ******************************************************************/
  10
  11 #include "bl.h"
  12
  13 /* DATA VARIABLES ************************************************************/
  14
  15 BL_LIBRARY_PARAMETERS BlpLibraryParameters;
  16 PBL_DEVICE_DESCRIPTOR BlpBootDevice;
  17 PWCHAR BlpApplicationBaseDirectory;
  18 PBOOT_APPLICATION_PARAMETER_BLOCK BlpApplicationParameters;
  19 BL_APPLICATION_ENTRY BlpApplicationEntry;
  20 BOOLEAN BlpLibraryParametersInitialized;
  21
  22 /* FUNCTIONS *****************************************************************/
  23
  24 /* HACKKKYYY */
  25 EFI_SYSTEM_TABLE* g_SystemTable;
  26
  27 VOID
  28 EarlyPrint(_In_ PWCHAR Format, ...)
  29 {
  30     WCHAR buffer[1024];
  31     va_list args;
  32
  33     va_start(args, Format);
  34
  35     vswprintf(buffer, Format, args);
  36
  37     g_SystemTable->ConOut->OutputString(g_SystemTable->ConOut, L"\r");
  38     g_SystemTable->ConOut->OutputString(g_SystemTable->ConOut, buffer);
  39
  40     g_SystemTable->BootServices->Stall(1000000);
  41
  42     va_end(args);
  43 }
  44 /* END HACKKKYYY */
  45
  46 /*++
  47  * @name InitializeLibrary
  48  *
  49  *     The InitializeLibrary function initializes the Boot Library.
  50  *
  51  * @param  BootParameters
  52  *         Pointer to the Boot Application Parameter Block.
  53  *
  54  * @param  LibraryParameters
  55  *         Pointer to the Boot Library Parameters.
  56  *
  57  * @return NT_SUCCESS if the boot library was loaded correctly, relevant error
  58  *         otherwise.
  59  *
  60  *--*/
  61 NTSTATUS
  62 InitializeLibrary (
  63     _In_ PBOOT_APPLICATION_PARAMETER_BLOCK BootAppParameters,
  64     _In_ PBL_LIBRARY_PARAMETERS LibraryParameters
  65     )
  66 {
  67     NTSTATUS Status;
  68     PBL_MEMORY_DATA MemoryData;
  69     PBL_APPLICATION_ENTRY AppEntry;
  70     PBL_FIRMWARE_DESCRIPTOR FirmwareDescriptor;
  71     ULONG_PTR ParamPointer = (ULONG_PTR)BootAppParameters;
  72
  73     /* Validate correct Boot Application data */
  74     if (!(BootAppParameters) ||
  75         (BootAppParameters->Signature[0] != BOOT_APPLICATION_SIGNATURE_1) ||
  76         (BootAppParameters->Signature[1] != BOOT_APPLICATION_SIGNATURE_2) ||
  77         (BootAppParameters->Size < sizeof(*BootAppParameters)))
  78     {
  79         Status = STATUS_INVALID_PARAMETER;
  80         goto Quickie;
  81     }
  82
  83     /* Get sub-structures */
  84     MemoryData = (PBL_MEMORY_DATA)(ParamPointer + BootAppParameters->MemoryDataOffset);
  85     FirmwareDescriptor = (PBL_FIRMWARE_DESCRIPTOR)(ParamPointer + BootAppParameters->FirmwareParametersOffset);
  86     AppEntry = (PBL_APPLICATION_ENTRY)(ParamPointer + BootAppParameters->AppEntryOffset);
  87     BlpBootDevice = (PBL_DEVICE_DESCRIPTOR)(ParamPointer + BootAppParameters->BootDeviceOffset);
  88     BlpApplicationBaseDirectory = LibraryParameters->ApplicationBaseDirectory;
  89
  90     /* Initialize the firmware table */
  91     Status = BlpFwInitialize(0, FirmwareDescriptor);
  92     if (!NT_SUCCESS(Status))
  93     {
  94         goto Quickie;
  95     }
  96
  97     /* Find boot application entry */
  98     if (strncmp(AppEntry->Signature, BL_APP_ENTRY_SIGNATURE, 7))
  99     {
 100         Status = STATUS_INVALID_PARAMETER_9;
 101         goto Quickie;
 102     }
 103
 104     /* Read parameters */
 105     BlpApplicationParameters = BootAppParameters;
 106     BlpLibraryParameters = *LibraryParameters;
 107
 108     /* Save the application entry */
 109     if (AppEntry->Flags & 2)
 110     {
 111         AppEntry->Flags = (AppEntry->Flags & ~0x2) | 0x80;
 112     }
 113     BlpApplicationEntry = *AppEntry;
 114
 115     /* Everything has been captured */
 116     BlpLibraryParametersInitialized = TRUE;
 117
 118     /* Initialize the architecture (PM or RM) switching */
 119     Status = BlpArchInitialize(0);
 120     if (!NT_SUCCESS(Status))
 121     {
 122         goto Quickie;
 123     }
 124
 125     /* Initialize the memory manager */
 126     Status = BlpMmInitialize(MemoryData,
 127                              BootAppParameters->MemoryTranslationType,
 128                              LibraryParameters);
 129     if (!NT_SUCCESS(Status))
 130     {
 131         EarlyPrint(L"MM init failed!\n");
 132         goto Quickie;
 133     }
 134
 135     EarlyPrint(L"TODO!\n");
 136     Status = STATUS_NOT_IMPLEMENTED;
 137
 138 Quickie:
 139     EarlyPrint(L"Exiting init: %lx\n", Status);
 140     return Status;
 141 }
 142
 143 /*++
 144  * @name BlInitializeLibrary
 145  *
 146  *     The BlInitializeLibrary function initializes, or re-initializes, the
 147  *     Boot Library.
 148  *
 149  * @param  BootParameters
 150  *         Pointer to the Boot Application Parameter Block.
 151  *
 152  * @param  LibraryParameters
 153  *         Pointer to the Boot Library Parameters.
 154  *
 155  * @return NT_SUCCESS if the boot library was loaded correctly, relevant error
 156  *         otherwise.
 157  *
 158  *--*/
 159 NTSTATUS
 160 BlInitializeLibrary(
 161     _In_ PBOOT_APPLICATION_PARAMETER_BLOCK BootAppParameters,
 162     _In_ PBL_LIBRARY_PARAMETERS LibraryParameters
 163     )
 164 {
 165     NTSTATUS Status;
 166
 167     /* Are we re-initializing the library? */
 168     if (LibraryParameters->LibraryFlags & 2)
 169     {
 170         /* From scratch? */
 171         BlpLibraryParameters = *LibraryParameters;
 172         if (LibraryParameters->LibraryFlags & 4)
 173         {
 174 #if 0
 175             /* Initialize all the core modules again */
 176             BlpSiInitialize(1);
 177             BlBdInitialize();
 178             BlMmRemoveBadMemory();
 179             BlpMmInitializeConstraints();
 180
 181             /* Redraw the graphics console as needed */
 182             BlpDisplayInitialize(LibraryParameters->LibraryFlags);
 183             BlpResourceInitialize();
 184 #endif
 185         }
 186
 187         /* Nothing to do, we're done */
 188         Status = STATUS_SUCCESS;
 189     }
 190     else
 191     {
 192         /* Nope, this is first time initialization */
 193         Status = InitializeLibrary(BootAppParameters, LibraryParameters);
 194     }
 195
 196     /* Return initialization status */
 197     return Status;
 198 }
 199