--- /dev/null
+/*++\r
+ \r
+Copyright (c) 2009, Intel Corporation. All rights reserved. <BR> \r
+This software and associated documentation (if any) is furnished\r
+under a license and may only be used or copied in accordance\r
+with the terms of the license. Except as permitted by such\r
+license, no part of this software or documentation may be\r
+reproduced, stored in a retrieval system, or transmitted in any\r
+form or by any means without the express written consent of\r
+Intel Corporation.\r
+\r
+\r
+Module Name:\r
+\r
+ MiscNumberOfInstallableLanguagesFunction.c\r
+ \r
+Abstract: \r
+\r
+ This driver parses the mSmbiosMiscDataTable structure and reports\r
+ any generated data.\r
+\r
+--*/\r
+\r
+#include "MiscSubclassDriver.h"\r
+/*++\r
+ Check whether the language is supported for given HII handle\r
+\r
+ @param HiiHandle The HII package list handle.\r
+ @param Offset The offest of current lanague in the supported languages.\r
+ @param CurrentLang The language code.\r
+\r
+ @retval TRUE Supported.\r
+ @retval FALSE Not Supported.\r
+\r
+--*/\r
+VOID\r
+EFIAPI\r
+CurrentLanguageMatch (\r
+ IN EFI_HII_HANDLE HiiHandle,\r
+ OUT UINT16 *Offset,\r
+ OUT CHAR8 *CurrentLang\r
+ )\r
+{\r
+ CHAR8 *DefaultLang;\r
+ CHAR8 *BestLanguage;\r
+ CHAR8 *Languages;\r
+ CHAR8 *MatchLang;\r
+ CHAR8 *EndMatchLang;\r
+ UINTN CompareLength;\r
+ \r
+ Languages = HiiGetSupportedLanguages (HiiHandle);\r
+ if (Languages == NULL) {\r
+ return;\r
+ }\r
+\r
+ CurrentLang = GetEfiGlobalVariable (L"PlatformLang");\r
+ DefaultLang = (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang);\r
+ BestLanguage = GetBestLanguage (\r
+ Languages,\r
+ FALSE,\r
+ (CurrentLang != NULL) ? CurrentLang : "",\r
+ DefaultLang,\r
+ NULL\r
+ );\r
+ if (BestLanguage != NULL) {\r
+ //\r
+ // Find the best matching RFC 4646 language, compute the offset.\r
+ //\r
+ CompareLength = AsciiStrLen (BestLanguage);\r
+ for (MatchLang = Languages, (*Offset) = 0; MatchLang != '\0'; (*Offset)++) {\r
+ //\r
+ // Seek to the end of current match language. \r
+ //\r
+ for (EndMatchLang = MatchLang; *EndMatchLang != '\0' && *EndMatchLang != ';'; EndMatchLang++);\r
+ \r
+ if ((EndMatchLang == MatchLang + CompareLength) && AsciiStrnCmp(MatchLang, BestLanguage, CompareLength) == 0) {\r
+ //\r
+ // Find the current best Language in the supported languages\r
+ //\r
+ break;\r
+ }\r
+ //\r
+ // best language match be in the supported language.\r
+ //\r
+ ASSERT (*EndMatchLang == ';');\r
+ MatchLang = EndMatchLang + 1;\r
+ }\r
+ FreePool (BestLanguage);\r
+ }\r
+\r
+ FreePool (Languages);\r
+ if (CurrentLang != NULL) {\r
+ FreePool (CurrentLang);\r
+ }\r
+ return ;\r
+}\r
+\r
+\r
+/**\r
+ Get next language from language code list (with separator ';').\r
+\r
+ @param LangCode Input: point to first language in the list. On\r
+ Otput: point to next language in the list, or\r
+ NULL if no more language in the list.\r
+ @param Lang The first language in the list.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+GetNextLanguage (\r
+ IN OUT CHAR8 **LangCode,\r
+ OUT CHAR8 *Lang\r
+ )\r
+{\r
+ UINTN Index;\r
+ CHAR8 *StringPtr;\r
+\r
+ ASSERT (LangCode != NULL);\r
+ ASSERT (*LangCode != NULL);\r
+ ASSERT (Lang != NULL);\r
+\r
+ Index = 0;\r
+ StringPtr = *LangCode;\r
+ while (StringPtr[Index] != 0 && StringPtr[Index] != ';') {\r
+ Index++;\r
+ }\r
+\r
+ CopyMem (Lang, StringPtr, Index);\r
+ Lang[Index] = 0;\r
+\r
+ if (StringPtr[Index] == ';') {\r
+ Index++;\r
+ }\r
+ *LangCode = StringPtr + Index;\r
+}\r
+\r
+/**\r
+ This function returns the number of supported languages on HiiHandle.\r
+\r
+ @param HiiHandle The HII package list handle.\r
+\r
+ @retval The number of supported languages.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+GetSupportedLanguageNumber (\r
+ IN EFI_HII_HANDLE HiiHandle\r
+ )\r
+{\r
+ CHAR8 *Lang;\r
+ CHAR8 *Languages;\r
+ CHAR8 *LanguageString;\r
+ UINT16 LangNumber;\r
+ \r
+ Languages = HiiGetSupportedLanguages (HiiHandle);\r
+ if (Languages == NULL) {\r
+ return 0;\r
+ }\r
+\r
+ LangNumber = 0;\r
+ Lang = AllocatePool (AsciiStrSize (Languages));\r
+ if (Lang != NULL) {\r
+ LanguageString = Languages;\r
+ while (*LanguageString != 0) {\r
+ GetNextLanguage (&LanguageString, Lang);\r
+ LangNumber++;\r
+ }\r
+ FreePool (Lang);\r
+ }\r
+ FreePool (Languages);\r
+ return LangNumber;\r
+}\r
+\r
+\r
+/**\r
+ This function makes boot time changes to the contents of the\r
+ MiscNumberOfInstallableLanguages (Type 13).\r
+\r
+ @param RecordData Pointer to copy of RecordData from the Data Table.\r
+\r
+ @retval EFI_SUCCESS All parameters were valid.\r
+ @retval EFI_UNSUPPORTED Unexpected RecordType value.\r
+ @retval EFI_INVALID_PARAMETER Invalid parameter was found.\r
+\r
+**/\r
+MISC_SMBIOS_TABLE_FUNCTION(NumberOfInstallableLanguages)\r
+{\r
+ UINTN LangStrLen;\r
+ CHAR8 CurrentLang[SMBIOS_STRING_MAX_LENGTH + 1];\r
+ CHAR8 *OptionalStrStart;\r
+ UINT16 Offset;\r
+ EFI_STATUS Status;\r
+ EFI_SMBIOS_HANDLE SmbiosHandle;\r
+ SMBIOS_TABLE_TYPE13 *SmbiosRecord;\r
+ EFI_MISC_NUMBER_OF_INSTALLABLE_LANGUAGES *ForType13InputData;\r
+ \r
+ ForType13InputData = (EFI_MISC_NUMBER_OF_INSTALLABLE_LANGUAGES *)RecordData;\r
+\r
+ //\r
+ // First check for invalid parameters.\r
+ //\r
+ if (RecordData == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ \r
+ ForType13InputData->NumberOfInstallableLanguages = GetSupportedLanguageNumber (mHiiHandle);\r
+\r
+ //\r
+ // Try to check if current langcode matches with the langcodes in installed languages\r
+ //\r
+ ZeroMem(CurrentLang, SMBIOS_STRING_MAX_LENGTH + 1);\r
+ CurrentLanguageMatch (mHiiHandle, &Offset, CurrentLang);\r
+ LangStrLen = AsciiStrLen(CurrentLang);\r
+\r
+ //\r
+ // Two zeros following the last string.\r
+ //\r
+ SmbiosRecord = AllocatePool(sizeof (SMBIOS_TABLE_TYPE13) + LangStrLen + 1 + 1);\r
+ ZeroMem(SmbiosRecord, sizeof (SMBIOS_TABLE_TYPE13) + LangStrLen + 1 + 1);\r
+\r
+ SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_BIOS_LANGUAGE_INFORMATION;\r
+ SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE13);\r
+ //\r
+ // Make handle chosen by smbios protocol.add automatically.\r
+ //\r
+ SmbiosRecord->Hdr.Handle = 0; \r
+\r
+ SmbiosRecord->InstallableLanguages = (UINT8)ForType13InputData->NumberOfInstallableLanguages;\r
+ SmbiosRecord->Flags = (UINT8)ForType13InputData->LanguageFlags.AbbreviatedLanguageFormat;\r
+ SmbiosRecord->CurrentLanguages = 1;\r
+ OptionalStrStart = (CHAR8 *)(SmbiosRecord + 1);\r
+ AsciiStrCpy(OptionalStrStart, CurrentLang);\r
+ //\r
+ // Now we have got the full smbios record, call smbios protocol to add this record.\r
+ //\r
+ SmbiosHandle = 0;\r
+ Status = Smbios-> Add(\r
+ Smbios, \r
+ NULL,\r
+ &SmbiosHandle, \r
+ (EFI_SMBIOS_TABLE_HEADER *) SmbiosRecord\r
+ );\r
+ FreePool(SmbiosRecord);\r
+ return Status;\r
+}\r
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