diff options
Diffstat (limited to 'gnu-efi/gnu-efi-3.0/lib/init.c')
-rw-r--r-- | gnu-efi/gnu-efi-3.0/lib/init.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/gnu-efi/gnu-efi-3.0/lib/init.c b/gnu-efi/gnu-efi-3.0/lib/init.c new file mode 100644 index 0000000..fa6f893 --- /dev/null +++ b/gnu-efi/gnu-efi-3.0/lib/init.c @@ -0,0 +1,183 @@ +/*++ + +Copyright (c) 1998 Intel Corporation + +Module Name: + + +Abstract: + + + + +Revision History + +--*/ + +#include "lib.h" + +VOID +EFIDebugVariable ( + VOID + ); + +VOID +InitializeLib ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +/*++ + +Routine Description: + + Initializes EFI library for use + +Arguments: + + Firmware's EFI system table + +Returns: + + None + +--*/ +{ + EFI_LOADED_IMAGE *LoadedImage; + EFI_STATUS Status; + CHAR8 *LangCode; + + if (!LibInitialized) { + LibInitialized = TRUE; + LibFwInstance = FALSE; + + // + // Set up global pointer to the system table, boot services table, + // and runtime services table + // + + ST = SystemTable; + BS = SystemTable->BootServices; + RT = SystemTable->RuntimeServices; +// ASSERT (CheckCrc(0, &ST->Hdr)); +// ASSERT (CheckCrc(0, &BS->Hdr)); +// ASSERT (CheckCrc(0, &RT->Hdr)); + + + // + // Initialize pool allocation type + // + + if (ImageHandle) { + Status = uefi_call_wrapper( + BS->HandleProtocol, + 3, + ImageHandle, + &LoadedImageProtocol, + (VOID*)&LoadedImage + ); + + if (!EFI_ERROR(Status)) { + PoolAllocationType = LoadedImage->ImageDataType; + } + + EFIDebugVariable (); + } + + // + // Initialize Guid table + // + + InitializeGuid(); + + InitializeLibPlatform(ImageHandle,SystemTable); + } + + // + // + // + + if (ImageHandle && UnicodeInterface == &LibStubUnicodeInterface) { + LangCode = LibGetVariable (VarLanguage, &EfiGlobalVariable); + InitializeUnicodeSupport (LangCode); + if (LangCode) { + FreePool (LangCode); + } + } +} + +VOID +InitializeUnicodeSupport ( + CHAR8 *LangCode + ) +{ + EFI_UNICODE_COLLATION_INTERFACE *Ui; + EFI_STATUS Status; + CHAR8 *Languages; + UINTN Index, Position, Length; + UINTN NoHandles; + EFI_HANDLE *Handles; + + // + // If we don't know it, lookup the current language code + // + + LibLocateHandle (ByProtocol, &UnicodeCollationProtocol, NULL, &NoHandles, &Handles); + if (!LangCode || !NoHandles) { + goto Done; + } + + // + // Check all driver's for a matching language code + // + + for (Index=0; Index < NoHandles; Index++) { + Status = uefi_call_wrapper(BS->HandleProtocol, 3, Handles[Index], &UnicodeCollationProtocol, (VOID*)&Ui); + if (EFI_ERROR(Status)) { + continue; + } + + // + // Check for a matching language code + // + + Languages = Ui->SupportedLanguages; + Length = strlena(Languages); + for (Position=0; Position < Length; Position += ISO_639_2_ENTRY_SIZE) { + + // + // If this code matches, use this driver + // + + if (CompareMem (Languages+Position, LangCode, ISO_639_2_ENTRY_SIZE) == 0) { + UnicodeInterface = Ui; + goto Done; + } + } + } + +Done: + // + // Cleanup + // + + if (Handles) { + FreePool (Handles); + } +} + +VOID +EFIDebugVariable ( + VOID + ) +{ + EFI_STATUS Status; + UINT32 Attributes; + UINTN DataSize; + UINTN NewEFIDebug; + + DataSize = sizeof(EFIDebug); + Status = uefi_call_wrapper(RT->GetVariable, 5, L"EFIDebug", &EfiGlobalVariable, &Attributes, &DataSize, &NewEFIDebug); + if (!EFI_ERROR(Status)) { + EFIDebug = NewEFIDebug; + } +} |