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/** @file
This driver parses the mSmbiosMiscDataTable structure and reports
any generated data.
Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "MiscSubClassDriver.h"
/*++
Check whether the language is supported for given HII handle
@param HiiHandle The HII package list handle.
@param Offset The offest of current lanague in the supported languages.
@param CurrentLang The language code.
@retval TRUE Supported.
@retval FALSE Not Supported.
**/
VOID
EFIAPI
CurrentLanguageMatch (
IN EFI_HII_HANDLE HiiHandle,
OUT UINT16 *Offset,
OUT CHAR8 *CurrentLang
)
{
CHAR8 *DefaultLang;
CHAR8 *BestLanguage;
CHAR8 *Languages;
CHAR8 *MatchLang;
CHAR8 *EndMatchLang;
UINTN CompareLength;
Languages = HiiGetSupportedLanguages (HiiHandle);
if (Languages == NULL) {
return;
}
CurrentLang = GetEfiGlobalVariable (L"PlatformLang");
DefaultLang = (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang);
BestLanguage = GetBestLanguage (
Languages,
FALSE,
(CurrentLang != NULL) ? CurrentLang : "",
DefaultLang,
NULL
);
if (BestLanguage != NULL) {
//
// Find the best matching RFC 4646 language, compute the offset.
//
CompareLength = AsciiStrLen (BestLanguage);
for (MatchLang = Languages, (*Offset) = 0; MatchLang != '\0'; (*Offset)++) {
//
// Seek to the end of current match language.
//
for (EndMatchLang = MatchLang; *EndMatchLang != '\0' && *EndMatchLang != ';'; EndMatchLang++);
if ((EndMatchLang == MatchLang + CompareLength) && AsciiStrnCmp(MatchLang, BestLanguage, CompareLength) == 0) {
//
// Find the current best Language in the supported languages
//
break;
}
//
// best language match be in the supported language.
//
ASSERT (*EndMatchLang == ';');
MatchLang = EndMatchLang + 1;
}
FreePool (BestLanguage);
}
FreePool (Languages);
if (CurrentLang != NULL) {
FreePool (CurrentLang);
}
return ;
}
/**
Get next language from language code list (with separator ';').
@param LangCode Input: point to first language in the list. On
Otput: point to next language in the list, or
NULL if no more language in the list.
@param Lang The first language in the list.
**/
VOID
EFIAPI
GetNextLanguage (
IN OUT CHAR8 **LangCode,
OUT CHAR8 *Lang
)
{
UINTN Index;
CHAR8 *StringPtr;
ASSERT (LangCode != NULL);
ASSERT (*LangCode != NULL);
ASSERT (Lang != NULL);
Index = 0;
StringPtr = *LangCode;
while (StringPtr[Index] != 0 && StringPtr[Index] != ';') {
Index++;
}
CopyMem (Lang, StringPtr, Index);
Lang[Index] = 0;
if (StringPtr[Index] == ';') {
Index++;
}
*LangCode = StringPtr + Index;
}
/**
This function returns the number of supported languages on HiiHandle.
@param HiiHandle The HII package list handle.
@retval The number of supported languages.
**/
UINT16
EFIAPI
GetSupportedLanguageNumber (
IN EFI_HII_HANDLE HiiHandle
)
{
CHAR8 *Lang;
CHAR8 *Languages;
CHAR8 *LanguageString;
UINT16 LangNumber;
Languages = HiiGetSupportedLanguages (HiiHandle);
if (Languages == NULL) {
return 0;
}
LangNumber = 0;
Lang = AllocatePool (AsciiStrSize (Languages));
if (Lang != NULL) {
LanguageString = Languages;
while (*LanguageString != 0) {
GetNextLanguage (&LanguageString, Lang);
LangNumber++;
}
FreePool (Lang);
}
FreePool (Languages);
return LangNumber;
}
/**
This function makes boot time changes to the contents of the
MiscNumberOfInstallableLanguages (Type 13).
@param RecordData Pointer to copy of RecordData from the Data Table.
@retval EFI_SUCCESS All parameters were valid.
@retval EFI_UNSUPPORTED Unexpected RecordType value.
@retval EFI_INVALID_PARAMETER Invalid parameter was found.
**/
MISC_SMBIOS_TABLE_FUNCTION(NumberOfInstallableLanguages)
{
UINTN LangStrLen;
CHAR8 CurrentLang[SMBIOS_STRING_MAX_LENGTH + 1];
CHAR8 *OptionalStrStart;
UINT16 Offset;
EFI_STATUS Status;
EFI_SMBIOS_HANDLE SmbiosHandle;
SMBIOS_TABLE_TYPE13 *SmbiosRecord;
EFI_MISC_NUMBER_OF_INSTALLABLE_LANGUAGES *ForType13InputData;
ForType13InputData = (EFI_MISC_NUMBER_OF_INSTALLABLE_LANGUAGES *)RecordData;
//
// First check for invalid parameters.
//
if (RecordData == NULL) {
return EFI_INVALID_PARAMETER;
}
ForType13InputData->NumberOfInstallableLanguages = GetSupportedLanguageNumber (mHiiHandle);
//
// Try to check if current langcode matches with the langcodes in installed languages
//
ZeroMem(CurrentLang, SMBIOS_STRING_MAX_LENGTH + 1);
CurrentLanguageMatch (mHiiHandle, &Offset, CurrentLang);
LangStrLen = AsciiStrLen(CurrentLang);
//
// Two zeros following the last string.
//
SmbiosRecord = AllocatePool(sizeof (SMBIOS_TABLE_TYPE13) + LangStrLen + 1 + 1);
ZeroMem(SmbiosRecord, sizeof (SMBIOS_TABLE_TYPE13) + LangStrLen + 1 + 1);
SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_BIOS_LANGUAGE_INFORMATION;
SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE13);
//
// Make handle chosen by smbios protocol.add automatically.
//
SmbiosRecord->Hdr.Handle = 0;
SmbiosRecord->InstallableLanguages = (UINT8)ForType13InputData->NumberOfInstallableLanguages;
SmbiosRecord->Flags = (UINT8)ForType13InputData->LanguageFlags.AbbreviatedLanguageFormat;
SmbiosRecord->CurrentLanguages = 1;
OptionalStrStart = (CHAR8 *)(SmbiosRecord + 1);
AsciiStrCpy(OptionalStrStart, CurrentLang);
//
// Now we have got the full smbios record, call smbios protocol to add this record.
//
Status = AddSmbiosRecord (Smbios, &SmbiosHandle, (EFI_SMBIOS_TABLE_HEADER *) SmbiosRecord);
FreePool(SmbiosRecord);
return Status;
}
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