158 lines
3.2 KiB
C
158 lines
3.2 KiB
C
/*++
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Copyright (c) 1998 Intel Corporation
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Module Name:
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Abstract:
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Revision History
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--*/
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#include "lib.h"
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VOID
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InitializeLib (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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Initializes EFI library for use
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Arguments:
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Firmware's EFI system table
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Returns:
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None
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--*/
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{
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EFI_LOADED_IMAGE *LoadedImage;
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EFI_STATUS Status;
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CHAR8 *LangCode;
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if (!LibInitialized) {
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LibInitialized = TRUE;
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LibFwInstance = FALSE;
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/*
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* Set up global pointer to the system table, boot services table,
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* and runtime services table
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*/
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ST = SystemTable;
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BS = SystemTable->BootServices;
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RT = SystemTable->RuntimeServices;
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/* ASSERT (CheckCrc(0, &ST->Hdr));
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* ASSERT (CheckCrc(0, &BS->Hdr));
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* ASSERT (CheckCrc(0, &RT->Hdr)); */
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/*
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* Initialize pool allocation type
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*/
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if (ImageHandle) {
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Status = BS->HandleProtocol (
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ImageHandle,
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&LoadedImageProtocol,
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(VOID*)&LoadedImage
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);
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if (!EFI_ERROR(Status)) {
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PoolAllocationType = LoadedImage->ImageDataType;
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}
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}
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/*
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* Initialize Guid table
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*/
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InitializeGuid();
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InitializeLibPlatform(ImageHandle,SystemTable);
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}
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/*
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*
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*/
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if (ImageHandle && UnicodeInterface == &LibStubUnicodeInterface) {
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LangCode = LibGetVariable (VarLanguage, &EfiGlobalVariable);
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InitializeUnicodeSupport (LangCode);
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if (LangCode) {
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FreePool (LangCode);
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}
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}
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}
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VOID
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InitializeUnicodeSupport (
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CHAR8 *LangCode
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)
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{
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EFI_UNICODE_COLLATION_INTERFACE *Ui;
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EFI_STATUS Status;
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CHAR8 *Languages;
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UINTN Index, Position, Length;
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UINTN NoHandles;
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EFI_HANDLE *Handles;
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/*
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* If we don't know it, lookup the current language code
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*/
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LibLocateHandle (ByProtocol, &UnicodeCollationProtocol, NULL, &NoHandles, &Handles);
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if (!LangCode || !NoHandles) {
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goto Done;
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}
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/*
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* Check all driver's for a matching language code
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*/
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for (Index=0; Index < NoHandles; Index++) {
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Status = BS->HandleProtocol (Handles[Index], &UnicodeCollationProtocol, (VOID*)&Ui);
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if (EFI_ERROR(Status)) {
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continue;
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}
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/*
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* Check for a matching language code
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*/
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Languages = Ui->SupportedLanguages;
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Length = strlena(Languages);
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for (Position=0; Position < Length; Position += ISO_639_2_ENTRY_SIZE) {
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/*
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* If this code matches, use this driver
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*/
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if (CompareMem (Languages+Position, LangCode, ISO_639_2_ENTRY_SIZE) == 0) {
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UnicodeInterface = Ui;
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goto Done;
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}
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}
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}
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Done:
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/*
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* Cleanup
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*/
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if (Handles) {
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FreePool (Handles);
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}
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}
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