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 /* temp */
  23 BL_TRANSLATION_TYPE MmTranslationType;
  24
  25 /* FUNCTIONS *****************************************************************/
  26
  27 /*++
  28  * @name InitializeLibrary
  29  *
  30  *     The InitializeLibrary function initializes the Boot Library.
  31  *
  32  * @param  BootParameters
  33  *         Pointer to the Boot Application Parameter Block.
  34  *
  35  * @param  LibraryParameters
  36  *         Pointer to the Boot Library Parameters.
  37  *
  38  * @return NT_SUCCESS if the boot library was loaded correctly, relevant error
  39  *         otherwise.
  40  *
  41  *--*/
  42 NTSTATUS
  43 InitializeLibrary (
  44     _In_ PBOOT_APPLICATION_PARAMETER_BLOCK BootAppParameters,
  45     _In_ PBL_LIBRARY_PARAMETERS LibraryParameters
  46     )
  47 {
  48     NTSTATUS Status;
  49     //PBL_MEMORY_DATA MemoryData;
  50     PBL_APPLICATION_ENTRY AppEntry;
  51     PBL_FIRMWARE_DESCRIPTOR FirmwareDescriptor;
  52     ULONG_PTR ParamPointer = (ULONG_PTR)BootAppParameters;
  53
  54     /* Validate correct Boot Application data */
  55     if (!(BootAppParameters) ||
  56         (BootAppParameters->Signature[0] != BOOT_APPLICATION_SIGNATURE_1) ||
  57         (BootAppParameters->Signature[1] != BOOT_APPLICATION_SIGNATURE_2) ||
  58         (BootAppParameters->Size < sizeof(*BootAppParameters)))
  59     {
  60         return STATUS_INVALID_PARAMETER;
  61     }
  62
  63     /* Get sub-structures */
  64     //MemoryData = (PBL_MEMORY_DATA)(ParamPointer + BootAppParameters->MemoryDataOffset);
  65     FirmwareDescriptor = (PBL_FIRMWARE_DESCRIPTOR)(ParamPointer + BootAppParameters->FirmwareParametersOffset);
  66     AppEntry = (PBL_APPLICATION_ENTRY)(ParamPointer + BootAppParameters->AppEntryOffset);
  67     BlpBootDevice = (PBL_DEVICE_DESCRIPTOR)(ParamPointer + BootAppParameters->BootDeviceOffset);
  68     BlpApplicationBaseDirectory = LibraryParameters->ApplicationBaseDirectory;
  69
  70     /* Initialize the firmware table */
  71     Status = BlpFwInitialize(0, FirmwareDescriptor);
  72     if (!NT_SUCCESS(Status))
  73     {
  74         goto Quickie;
  75     }
  76
  77     /* Find boot application entry */
  78     if (strncmp(AppEntry->Signature, BL_APP_ENTRY_SIGNATURE, 7))
  79     {
  80         Status = STATUS_INVALID_PARAMETER_9;
  81     }
  82
  83     /* Read parameters */
  84     BlpApplicationParameters = BootAppParameters;
  85     BlpLibraryParameters = *LibraryParameters;
  86
  87     /* Save the application entry */
  88     if (AppEntry->Flags & 2)
  89     {
  90         AppEntry->Flags = (AppEntry->Flags & ~0x2) | 0x80;
  91     }
  92     BlpApplicationEntry = *AppEntry;
  93
  94     /* Everything has been captured */
  95     BlpLibraryParametersInitialized = TRUE;
  96
  97     /* Initialize the architecture (PM or RM) switching */
  98     Status = BlpArchInitialize(0);
  99     if (!NT_SUCCESS(Status))
 100     {
 101         goto Quickie;
 102     }
 103
 104     Status = STATUS_NOT_IMPLEMENTED;
 105
 106 Quickie:
 107     return Status;
 108 }
 109
 110 /*++
 111  * @name BlInitializeLibrary
 112  *
 113  *     The BlInitializeLibrary function initializes, or re-initializes, the
 114  *     Boot Library.
 115  *
 116  * @param  BootParameters
 117  *         Pointer to the Boot Application Parameter Block.
 118  *
 119  * @param  LibraryParameters
 120  *         Pointer to the Boot Library Parameters.
 121  *
 122  * @return NT_SUCCESS if the boot library was loaded correctly, relevant error
 123  *         otherwise.
 124  *
 125  *--*/
 126 NTSTATUS
 127 BlInitializeLibrary(
 128     _In_ PBOOT_APPLICATION_PARAMETER_BLOCK BootAppParameters,
 129     _In_ PBL_LIBRARY_PARAMETERS LibraryParameters
 130     )
 131 {
 132     NTSTATUS Status;
 133
 134     /* Are we re-initializing the library? */
 135     if (LibraryParameters->LibraryFlags & 2)
 136     {
 137         /* From scratch? */
 138         BlpLibraryParameters = *LibraryParameters;
 139         if (LibraryParameters->LibraryFlags & 4)
 140         {
 141 #if 0
 142             /* Initialize all the core modules again */
 143             BlpSiInitialize(1);
 144             BlBdInitialize();
 145             BlMmRemoveBadMemory();
 146             BlpMmInitializeConstraints();
 147
 148             /* Redraw the graphics console as needed */
 149             BlpDisplayInitialize(LibraryParameters->LibraryFlags);
 150             BlpResourceInitialize();
 151 #endif
 152         }
 153
 154         /* Nothing to do, we're done */
 155         Status = STATUS_SUCCESS;
 156     }
 157     else
 158     {
 159         /* Nope, this is first time initialization */
 160         Status = InitializeLibrary(BootAppParameters, LibraryParameters);
 161     }
 162
 163     /* Return initialization status */
 164     return Status;
 165 }
 166