REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1323
Merge EmuVariable and Real variable driver.
The real variable driver has been updated to support emulated
variable NV mode.
This patch removes EmuVariableRuntimeDxe after platforms are
migrated to use the merged variable driver.
Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Hao Wu <hao.a...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.z...@intel.com>
---
MdeModulePkg/MdeModulePkg.dsc | 5 +-
.../Universal/Variable/EmuRuntimeDxe/EmuVariable.c | 1820 --------------------
.../EmuRuntimeDxe/EmuVariableRuntimeDxe.inf | 88 -
.../EmuRuntimeDxe/EmuVariableRuntimeDxe.uni | 22 -
.../EmuRuntimeDxe/EmuVariableRuntimeDxeExtra.uni | 19 -
.../Variable/EmuRuntimeDxe/InitVariable.c | 259 ---
.../Universal/Variable/EmuRuntimeDxe/Variable.h | 277 ---
7 files changed, 1 insertion(+), 2489 deletions(-)
delete mode 100644 MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c
delete mode 100644
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
delete mode 100644
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.uni
delete mode 100644
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxeExtra.uni
delete mode 100644 MdeModulePkg/Universal/Variable/EmuRuntimeDxe/InitVariable.c
delete mode 100644 MdeModulePkg/Universal/Variable/EmuRuntimeDxe/Variable.h
diff --git a/MdeModulePkg/MdeModulePkg.dsc b/MdeModulePkg/MdeModulePkg.dsc
index 5d042be3a862..3186f35a1a48 100644
--- a/MdeModulePkg/MdeModulePkg.dsc
+++ b/MdeModulePkg/MdeModulePkg.dsc
@@ -2,7 +2,7 @@
# EFI/PI Reference Module Package for All Architectures
#
# (C) Copyright 2014 Hewlett-Packard Development Company, L.P.<BR>
-# Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.<BR>
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD
License
@@ -433,9 +433,6 @@ [Components.IA32, Components.X64, Components.ARM,
Components.AARCH64]
NULL|MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib/DxeCrc32GuidedSectionExtractLib.inf
}
-[Components.IA32, Components.X64, Components.Ebc]
- MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
-
[Components.IA32, Components.X64]
MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.inf
MdeModulePkg/Core/PiSmmCore/PiSmmIpl.inf
diff --git a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c
b/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c
deleted file mode 100644
index 1bcf931b96a6..000000000000
--- a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c
+++ /dev/null
@@ -1,1820 +0,0 @@
-/** @file
-
- Emulation Variable services operate on the runtime volatile memory.
- The nonvolatile variable space doesn't exist.
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD
License
-which accompanies this distribution. The full text of the license may be
found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "Variable.h"
-
-///
-/// Don't use module globals after the SetVirtualAddress map is signaled
-///
-ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;
-
-VARIABLE_INFO_ENTRY *gVariableInfo = NULL;
-
-///
-/// The size of a 3 character ISO639 language code.
-///
-#define ISO_639_2_ENTRY_SIZE 3
-
-/**
- Update the variable region with Variable information. These are the same
- arguments as the EFI Variable services.
-
- @param[in] VariableName Name of variable
-
- @param[in] VendorGuid Guid of variable
-
- @param[in] Data Variable data
-
- @param[in] DataSize Size of data. 0 means delete
-
- @param[in] Attributes Attribues of the variable
-
- @param[in] Variable The variable information which is used to keep
track of variable usage.
-
- @retval EFI_SUCCESS The update operation is success.
-
- @retval EFI_OUT_OF_RESOURCES Variable region is full, can not write other
data into this region.
-
-**/
-EFI_STATUS
-EFIAPI
-UpdateVariable (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- IN VOID *Data,
- IN UINTN DataSize,
- IN UINT32 Attributes OPTIONAL,
- IN VARIABLE_POINTER_TRACK *Variable
- );
-
-/**
- Finds variable in storage blocks of volatile and non-volatile storage areas.
-
- This code finds variable in storage blocks of volatile and non-volatile
storage areas.
- If VariableName is an empty string, then we just return the first
- qualified variable without comparing VariableName and VendorGuid.
- Otherwise, VariableName and VendorGuid are compared.
-
- @param VariableName Name of the variable to be found.
- @param VendorGuid Vendor GUID to be found.
- @param PtrTrack VARIABLE_POINTER_TRACK structure for
output,
- including the range searched and the
target position.
- @param Global Pointer to VARIABLE_GLOBAL structure,
including
- base of volatile variable storage area,
base of
- NV variable storage area, and a lock.
-
- @retval EFI_INVALID_PARAMETER If VariableName is not an empty string,
while
- VendorGuid is NULL.
- @retval EFI_SUCCESS Variable successfully found.
- @retval EFI_NOT_FOUND Variable not found.
-
-**/
-EFI_STATUS
-FindVariable (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- OUT VARIABLE_POINTER_TRACK *PtrTrack,
- IN VARIABLE_GLOBAL *Global
- );
-
-/**
- Acquires lock only at boot time. Simply returns at runtime.
-
- This is a temperary function which will be removed when
- EfiAcquireLock() in UefiLib can handle the call in UEFI
- Runtimer driver in RT phase.
- It calls EfiAcquireLock() at boot time, and simply returns
- at runtime
-
- @param Lock A pointer to the lock to acquire
-
-**/
-VOID
-AcquireLockOnlyAtBootTime (
- IN EFI_LOCK *Lock
- )
-{
- if (!EfiAtRuntime ()) {
- EfiAcquireLock (Lock);
- }
-}
-
-/**
- Releases lock only at boot time. Simply returns at runtime.
-
- This is a temperary function which will be removed when
- EfiReleaseLock() in UefiLib can handle the call in UEFI
- Runtimer driver in RT phase.
- It calls EfiReleaseLock() at boot time, and simply returns
- at runtime
-
- @param Lock A pointer to the lock to release
-
-**/
-VOID
-ReleaseLockOnlyAtBootTime (
- IN EFI_LOCK *Lock
- )
-{
- if (!EfiAtRuntime ()) {
- EfiReleaseLock (Lock);
- }
-}
-
-/**
- Gets pointer to the variable data.
-
- This function gets the pointer to the variable data according
- to the input pointer to the variable header.
-
- @param Variable Pointer to the variable header.
-
- @return Pointer to variable data
-
-**/
-UINT8 *
-GetVariableDataPtr (
- IN VARIABLE_HEADER *Variable
- )
-{
- if (Variable->StartId != VARIABLE_DATA) {
- return NULL;
- }
- //
- // Be careful about pad size for alignment
- //
- return (UINT8 *) ((UINTN) GET_VARIABLE_NAME_PTR (Variable) +
Variable->NameSize + GET_PAD_SIZE (Variable->NameSize));
-}
-
-/**
- Gets pointer to header of the next potential variable.
-
- This function gets the pointer to the next potential variable header
- according to the input point to the variable header. The return value
- is not a valid variable if the input variable was the last variable
- in the variabl store.
-
- @param Variable Pointer to header of the next variable
-
- @return Pointer to next variable header.
- @retval NULL Input was not a valid variable header.
-
-**/
-VARIABLE_HEADER *
-GetNextPotentialVariablePtr (
- IN VARIABLE_HEADER *Variable
- )
-{
- VARIABLE_HEADER *VarHeader;
-
- if (Variable->StartId != VARIABLE_DATA) {
- return NULL;
- }
- //
- // Be careful about pad size for alignment
- //
- VarHeader = (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) GetVariableDataPtr
(Variable) + Variable->DataSize + GET_PAD_SIZE (Variable->DataSize));
-
- return VarHeader;
-}
-
-/**
- Gets pointer to header of the next variable.
-
- This function gets the pointer to the next variable header according
- to the input point to the variable header.
-
- @param Variable Pointer to header of the next variable
-
- @return Pointer to next variable header.
-
-**/
-VARIABLE_HEADER *
-GetNextVariablePtr (
- IN VARIABLE_HEADER *Variable
- )
-{
- VARIABLE_HEADER *VarHeader;
-
- VarHeader = GetNextPotentialVariablePtr (Variable);
-
- if ((VarHeader == NULL) || (VarHeader->StartId != VARIABLE_DATA)) {
- return NULL;
- }
-
- return VarHeader;
-}
-
-/**
- Updates LastVariableOffset variable for the given variable store.
-
- LastVariableOffset points to the offset to use for the next variable
- when updating the variable store.
-
- @param[in] VariableStore Pointer to the start of the variable store
- @param[out] LastVariableOffset Offset to put the next new variable in
-
-**/
-VOID
-InitializeLocationForLastVariableOffset (
- IN VARIABLE_STORE_HEADER *VariableStore,
- OUT UINTN *LastVariableOffset
- )
-{
- VARIABLE_HEADER *VarHeader;
-
- *LastVariableOffset = sizeof (VARIABLE_STORE_HEADER);
- VarHeader = (VARIABLE_HEADER*) ((UINT8*)VariableStore + *LastVariableOffset);
- while (VarHeader->StartId == VARIABLE_DATA) {
- VarHeader = GetNextPotentialVariablePtr (VarHeader);
-
- if (VarHeader != NULL) {
- *LastVariableOffset = (UINTN) VarHeader - (UINTN) VariableStore;
- } else {
- return;
- }
- }
-}
-
-/**
- Gets pointer to the end of the variable storage area.
-
- This function gets pointer to the end of the variable storage
- area, according to the input variable store header.
-
- @param VolHeader Pointer to the variale store header
-
- @return Pointer to the end of the variable storage area.
-
-**/
-VARIABLE_HEADER *
-GetEndPointer (
- IN VARIABLE_STORE_HEADER *VolHeader
- )
-{
- //
- // The end of variable store
- //
- return (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) VolHeader +
VolHeader->Size);
-}
-
-/**
- Routine used to track statistical information about variable usage.
- The data is stored in the EFI system table so it can be accessed later.
- VariableInfo.efi can dump out the table. Only Boot Services variable
- accesses are tracked by this code. The PcdVariableCollectStatistics
- build flag controls if this feature is enabled.
-
- A read that hits in the cache will have Read and Cache true for
- the transaction. Data is allocated by this routine, but never
- freed.
-
- @param[in] VariableName Name of the Variable to track
- @param[in] VendorGuid Guid of the Variable to track
- @param[in] Volatile TRUE if volatile FALSE if non-volatile
- @param[in] Read TRUE if GetVariable() was called
- @param[in] Write TRUE if SetVariable() was called
- @param[in] Delete TRUE if deleted via SetVariable()
- @param[in] Cache TRUE for a cache hit.
-
-**/
-VOID
-UpdateVariableInfo (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- IN BOOLEAN Volatile,
- IN BOOLEAN Read,
- IN BOOLEAN Write,
- IN BOOLEAN Delete,
- IN BOOLEAN Cache
- )
-{
- VARIABLE_INFO_ENTRY *Entry;
-
- if (FeaturePcdGet (PcdVariableCollectStatistics)) {
-
- if (EfiAtRuntime ()) {
- // Don't collect statistics at runtime
- return;
- }
-
- if (gVariableInfo == NULL) {
- //
- // on the first call allocate a entry and place a pointer to it in
- // the EFI System Table
- //
- gVariableInfo = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));
- ASSERT (gVariableInfo != NULL);
-
- CopyGuid (&gVariableInfo->VendorGuid, VendorGuid);
- gVariableInfo->Name = AllocateZeroPool (StrSize (VariableName));
- ASSERT (gVariableInfo->Name != NULL);
- StrCpyS (gVariableInfo->Name, StrSize(VariableName)/sizeof(CHAR16),
VariableName);
- gVariableInfo->Volatile = Volatile;
-
- gBS->InstallConfigurationTable (&gEfiVariableGuid, gVariableInfo);
- }
-
-
- for (Entry = gVariableInfo; Entry != NULL; Entry = Entry->Next) {
- if (CompareGuid (VendorGuid, &Entry->VendorGuid)) {
- if (StrCmp (VariableName, Entry->Name) == 0) {
- if (Read) {
- Entry->ReadCount++;
- }
- if (Write) {
- Entry->WriteCount++;
- }
- if (Delete) {
- Entry->DeleteCount++;
- }
- if (Cache) {
- Entry->CacheCount++;
- }
-
- return;
- }
- }
-
- if (Entry->Next == NULL) {
- //
- // If the entry is not in the table add it.
- // Next iteration of the loop will fill in the data
- //
- Entry->Next = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));
- ASSERT (Entry->Next != NULL);
-
- CopyGuid (&Entry->Next->VendorGuid, VendorGuid);
- Entry->Next->Name = AllocateZeroPool (StrSize (VariableName));
- ASSERT (Entry->Next->Name != NULL);
- StrCpyS (Entry->Next->Name, StrSize(VariableName)/sizeof(CHAR16),
VariableName);
- Entry->Next->Volatile = Volatile;
- }
-
- }
- }
-}
-
-/**
- Get index from supported language codes according to language string.
-
- This code is used to get corresponding index in supported language codes. It
can handle
- RFC4646 and ISO639 language tags.
- In ISO639 language tags, take 3-characters as a delimitation to find matched
string and calculate the index.
- In RFC4646 language tags, take semicolon as a delimitation to find matched
string and calculate the index.
-
- For example:
- SupportedLang = "engfraengfra"
- Lang = "eng"
- Iso639Language = TRUE
- The return value is "0".
- Another example:
- SupportedLang = "en;fr;en-US;fr-FR"
- Lang = "fr-FR"
- Iso639Language = FALSE
- The return value is "3".
-
- @param SupportedLang Platform supported language codes.
- @param Lang Configured language.
- @param Iso639Language A bool value to signify if the handler
is operated on ISO639 or RFC4646.
-
- @retval the index of language in the language codes.
-
-**/
-UINTN
-GetIndexFromSupportedLangCodes(
- IN CHAR8 *SupportedLang,
- IN CHAR8 *Lang,
- IN BOOLEAN Iso639Language
- )
-{
- UINTN Index;
- UINTN CompareLength;
- UINTN LanguageLength;
-
- if (Iso639Language) {
- CompareLength = ISO_639_2_ENTRY_SIZE;
- for (Index = 0; Index < AsciiStrLen (SupportedLang); Index +=
CompareLength) {
- if (AsciiStrnCmp (Lang, SupportedLang + Index, CompareLength) == 0) {
- //
- // Successfully find the index of Lang string in SupportedLang string.
- //
- Index = Index / CompareLength;
- return Index;
- }
- }
- ASSERT (FALSE);
- return 0;
- } else {
- //
- // Compare RFC4646 language code
- //
- Index = 0;
- for (LanguageLength = 0; Lang[LanguageLength] != '\0'; LanguageLength++);
-
- for (Index = 0; *SupportedLang != '\0'; Index++, SupportedLang +=
CompareLength) {
- //
- // Skip ';' characters in SupportedLang
- //
- for (; *SupportedLang != '\0' && *SupportedLang == ';'; SupportedLang++);
- //
- // Determine the length of the next language code in SupportedLang
- //
- for (CompareLength = 0; SupportedLang[CompareLength] != '\0' &&
SupportedLang[CompareLength] != ';'; CompareLength++);
-
- if ((CompareLength == LanguageLength) &&
- (AsciiStrnCmp (Lang, SupportedLang, CompareLength) == 0)) {
- //
- // Successfully find the index of Lang string in SupportedLang string.
- //
- return Index;
- }
- }
- ASSERT (FALSE);
- return 0;
- }
-}
-
-/**
- Get language string from supported language codes according to index.
-
- This code is used to get corresponding language string in supported language
codes. It can handle
- RFC4646 and ISO639 language tags.
- In ISO639 language tags, take 3-characters as a delimitation. Find language
string according to the index.
- In RFC4646 language tags, take semicolon as a delimitation. Find language
string according to the index.
-
- For example:
- SupportedLang = "engfraengfra"
- Index = "1"
- Iso639Language = TRUE
- The return value is "fra".
- Another example:
- SupportedLang = "en;fr;en-US;fr-FR"
- Index = "1"
- Iso639Language = FALSE
- The return value is "fr".
-
- @param SupportedLang Platform supported language codes.
- @param Index the index in supported language codes.
- @param Iso639Language A bool value to signify if the handler
is operated on ISO639 or RFC4646.
-
- @retval the language string in the language codes.
-
-**/
-CHAR8 *
-GetLangFromSupportedLangCodes (
- IN CHAR8 *SupportedLang,
- IN UINTN Index,
- IN BOOLEAN Iso639Language
-)
-{
- UINTN SubIndex;
- UINTN CompareLength;
- CHAR8 *Supported;
-
- SubIndex = 0;
- Supported = SupportedLang;
- if (Iso639Language) {
- //
- // according to the index of Lang string in SupportedLang string to get
the language.
- // As this code will be invoked in RUNTIME, therefore there is not memory
allocate/free operation.
- // In driver entry, it pre-allocates a runtime attribute memory to
accommodate this string.
- //
- CompareLength = ISO_639_2_ENTRY_SIZE;
- mVariableModuleGlobal->Lang[CompareLength] = '\0';
- return CopyMem (mVariableModuleGlobal->Lang, SupportedLang + Index *
CompareLength, CompareLength);
-
- } else {
- while (TRUE) {
- //
- // take semicolon as delimitation, sequentially traverse supported
language codes.
- //
- for (CompareLength = 0; *Supported != ';' && *Supported != '\0';
CompareLength++) {
- Supported++;
- }
- if ((*Supported == '\0') && (SubIndex != Index)) {
- //
- // Have completed the traverse, but not find corrsponding string.
- // This case is not allowed to happen.
- //
- ASSERT(FALSE);
- return NULL;
- }
- if (SubIndex == Index) {
- //
- // according to the index of Lang string in SupportedLang string to
get the language.
- // As this code will be invoked in RUNTIME, therefore there is not
memory allocate/free operation.
- // In driver entry, it pre-allocates a runtime attribute memory to
accommodate this string.
- //
- mVariableModuleGlobal->PlatformLang[CompareLength] = '\0';
- return CopyMem (mVariableModuleGlobal->PlatformLang, Supported -
CompareLength, CompareLength);
- }
- SubIndex++;
-
- //
- // Skip ';' characters in Supported
- //
- for (; *Supported != '\0' && *Supported == ';'; Supported++);
- }
- }
-}
-
-/**
- Returns a pointer to an allocated buffer that contains the best matching
language
- from a set of supported languages.
-
- This function supports both ISO 639-2 and RFC 4646 language codes, but
language
- code types may not be mixed in a single call to this function. This function
- supports a variable argument list that allows the caller to pass in a
prioritized
- list of language codes to test against all the language codes in
SupportedLanguages.
-
- If SupportedLanguages is NULL, then ASSERT().
-
- @param[in] SupportedLanguages A pointer to a Null-terminated ASCII string
that
- contains a set of language codes in the
format
- specified by Iso639Language.
- @param[in] Iso639Language If not zero, then all language codes are
assumed to be
- in ISO 639-2 format. If zero, then all
language
- codes are assumed to be in RFC 4646 language
format
- @param[in] ... A variable argument list that contains
pointers to
- Null-terminated ASCII strings that contain
one or more
- language codes in the format specified by
Iso639Language.
- The first language code from each of these
language
- code lists is used to determine if it is an
exact or
- close match to any of the language codes in
- SupportedLanguages. Close matches only
apply to RFC 4646
- language codes, and the matching algorithm
from RFC 4647
- is used to determine if a close match is
present. If
- an exact or close match is found, then the
matching
- language code from SupportedLanguages is
returned. If
- no matches are found, then the next variable
argument
- parameter is evaluated. The variable
argument list
- is terminated by a NULL.
-
- @retval NULL The best matching language could not be found in
SupportedLanguages.
- @retval NULL There are not enough resources available to return the best
matching
- language.
- @retval Other A pointer to a Null-terminated ASCII string that is the best
matching
- language in SupportedLanguages.
-
-**/
-CHAR8 *
-EFIAPI
-VariableGetBestLanguage (
- IN CONST CHAR8 *SupportedLanguages,
- IN UINTN Iso639Language,
- ...
- )
-{
- VA_LIST Args;
- CHAR8 *Language;
- UINTN CompareLength;
- UINTN LanguageLength;
- CONST CHAR8 *Supported;
- CHAR8 *Buffer;
-
- ASSERT (SupportedLanguages != NULL);
-
- VA_START (Args, Iso639Language);
- while ((Language = VA_ARG (Args, CHAR8 *)) != NULL) {
- //
- // Default to ISO 639-2 mode
- //
- CompareLength = 3;
- LanguageLength = MIN (3, AsciiStrLen (Language));
-
- //
- // If in RFC 4646 mode, then determine the length of the first RFC 4646
language code in Language
- //
- if (Iso639Language == 0) {
- for (LanguageLength = 0; Language[LanguageLength] != 0 &&
Language[LanguageLength] != ';'; LanguageLength++);
- }
-
- //
- // Trim back the length of Language used until it is empty
- //
- while (LanguageLength > 0) {
- //
- // Loop through all language codes in SupportedLanguages
- //
- for (Supported = SupportedLanguages; *Supported != '\0'; Supported +=
CompareLength) {
- //
- // In RFC 4646 mode, then Loop through all language codes in
SupportedLanguages
- //
- if (Iso639Language == 0) {
- //
- // Skip ';' characters in Supported
- //
- for (; *Supported != '\0' && *Supported == ';'; Supported++);
- //
- // Determine the length of the next language code in Supported
- //
- for (CompareLength = 0; Supported[CompareLength] != 0 &&
Supported[CompareLength] != ';'; CompareLength++);
- //
- // If Language is longer than the Supported, then skip to the next
language
- //
- if (LanguageLength > CompareLength) {
- continue;
- }
- }
- //
- // See if the first LanguageLength characters in Supported match
Language
- //
- if (AsciiStrnCmp (Supported, Language, LanguageLength) == 0) {
- VA_END (Args);
-
- Buffer = (Iso639Language != 0) ? mVariableModuleGlobal->Lang :
mVariableModuleGlobal->PlatformLang;
- Buffer[CompareLength] = '\0';
- return CopyMem (Buffer, Supported, CompareLength);
- }
- }
-
- if (Iso639Language != 0) {
- //
- // If ISO 639 mode, then each language can only be tested once
- //
- LanguageLength = 0;
- } else {
- //
- // If RFC 4646 mode, then trim Language from the right to the next '-'
character
- //
- for (LanguageLength--; LanguageLength > 0 && Language[LanguageLength]
!= '-'; LanguageLength--);
- }
- }
- }
- VA_END (Args);
-
- //
- // No matches were found
- //
- return NULL;
-}
-
-/**
- Hook the operations in PlatformLangCodes, LangCodes, PlatformLang and Lang.
-
- When setting Lang/LangCodes, simultaneously update
PlatformLang/PlatformLangCodes.
-
- According to UEFI spec, PlatformLangCodes/LangCodes are only set once in
firmware initialization,
- and are read-only. Therefore, in variable driver, only store the original
value for other use.
-
- @param[in] VariableName Name of variable
-
- @param[in] Data Variable data
-
- @param[in] DataSize Size of data. 0 means delete
-
-**/
-VOID
-AutoUpdateLangVariable(
- IN CHAR16 *VariableName,
- IN VOID *Data,
- IN UINTN DataSize
- )
-{
- EFI_STATUS Status;
- CHAR8 *BestPlatformLang;
- CHAR8 *BestLang;
- UINTN Index;
- UINT32 Attributes;
- VARIABLE_POINTER_TRACK Variable;
- BOOLEAN SetLanguageCodes;
-
- //
- // Don't do updates for delete operation
- //
- if (DataSize == 0) {
- return;
- }
-
- SetLanguageCodes = FALSE;
-
- if (StrCmp (VariableName, L"PlatformLangCodes") == 0) {
- //
- // PlatformLangCodes is a volatile variable, so it can not be updated at
runtime.
- //
- if (EfiAtRuntime ()) {
- return;
- }
-
- SetLanguageCodes = TRUE;
-
- //
- // According to UEFI spec, PlatformLangCodes is only set once in firmware
initialization, and is read-only
- // Therefore, in variable driver, only store the original value for other
use.
- //
- if (mVariableModuleGlobal->PlatformLangCodes != NULL) {
- FreePool (mVariableModuleGlobal->PlatformLangCodes);
- }
- mVariableModuleGlobal->PlatformLangCodes = AllocateRuntimeCopyPool
(DataSize, Data);
- ASSERT (mVariableModuleGlobal->PlatformLangCodes != NULL);
-
- //
- // PlatformLang holds a single language from PlatformLangCodes,
- // so the size of PlatformLangCodes is enough for the PlatformLang.
- //
- if (mVariableModuleGlobal->PlatformLang != NULL) {
- FreePool (mVariableModuleGlobal->PlatformLang);
- }
- mVariableModuleGlobal->PlatformLang = AllocateRuntimePool (DataSize);
- ASSERT (mVariableModuleGlobal->PlatformLang != NULL);
-
- } else if (StrCmp (VariableName, L"LangCodes") == 0) {
- //
- // LangCodes is a volatile variable, so it can not be updated at runtime.
- //
- if (EfiAtRuntime ()) {
- return;
- }
-
- SetLanguageCodes = TRUE;
-
- //
- // According to UEFI spec, LangCodes is only set once in firmware
initialization, and is read-only
- // Therefore, in variable driver, only store the original value for other
use.
- //
- if (mVariableModuleGlobal->LangCodes != NULL) {
- FreePool (mVariableModuleGlobal->LangCodes);
- }
- mVariableModuleGlobal->LangCodes = AllocateRuntimeCopyPool (DataSize,
Data);
- ASSERT (mVariableModuleGlobal->LangCodes != NULL);
- }
-
- if (SetLanguageCodes
- && (mVariableModuleGlobal->PlatformLangCodes != NULL)
- && (mVariableModuleGlobal->LangCodes != NULL)) {
- //
- // Update Lang if PlatformLang is already set
- // Update PlatformLang if Lang is already set
- //
- Status = FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid,
&Variable, (VARIABLE_GLOBAL *) mVariableModuleGlobal);
- if (!EFI_ERROR (Status)) {
- //
- // Update Lang
- //
- VariableName = L"PlatformLang";
- Data = GetVariableDataPtr (Variable.CurrPtr);
- DataSize = Variable.CurrPtr->DataSize;
- } else {
- Status = FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable,
(VARIABLE_GLOBAL *) mVariableModuleGlobal);
- if (!EFI_ERROR (Status)) {
- //
- // Update PlatformLang
- //
- VariableName = L"Lang";
- Data = GetVariableDataPtr (Variable.CurrPtr);
- DataSize = Variable.CurrPtr->DataSize;
- } else {
- //
- // Neither PlatformLang nor Lang is set, directly return
- //
- return;
- }
- }
- }
-
- //
- // According to UEFI spec, "Lang" and "PlatformLang" is NV|BS|RT
attributions.
- //
- Attributes = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS;
-
- if (StrCmp (VariableName, L"PlatformLang") == 0) {
- //
- // Update Lang when PlatformLangCodes/LangCodes were set.
- //
- if ((mVariableModuleGlobal->PlatformLangCodes != NULL) &&
(mVariableModuleGlobal->LangCodes != NULL)) {
- //
- // When setting PlatformLang, firstly get most matched language string
from supported language codes.
- //
- BestPlatformLang = VariableGetBestLanguage
(mVariableModuleGlobal->PlatformLangCodes, FALSE, Data, NULL);
- if (BestPlatformLang != NULL) {
- //
- // Get the corresponding index in language codes.
- //
- Index = GetIndexFromSupportedLangCodes
(mVariableModuleGlobal->PlatformLangCodes, BestPlatformLang, FALSE);
-
- //
- // Get the corresponding ISO639 language tag according to RFC4646
language tag.
- //
- BestLang = GetLangFromSupportedLangCodes
(mVariableModuleGlobal->LangCodes, Index, TRUE);
-
- //
- // Successfully convert PlatformLang to Lang, and set the BestLang
value into Lang variable simultaneously.
- //
- FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable,
(VARIABLE_GLOBAL *)mVariableModuleGlobal);
-
- Status = UpdateVariable (L"Lang", &gEfiGlobalVariableGuid, BestLang,
ISO_639_2_ENTRY_SIZE + 1, Attributes, &Variable);
-
- DEBUG ((EFI_D_INFO, "Variable Driver Auto Update PlatformLang,
PlatformLang:%a, Lang:%a\n", BestPlatformLang, BestLang));
-
- ASSERT_EFI_ERROR(Status);
- }
- }
-
- } else if (StrCmp (VariableName, L"Lang") == 0) {
- //
- // Update PlatformLang when PlatformLangCodes/LangCodes were set.
- //
- if ((mVariableModuleGlobal->PlatformLangCodes != NULL) &&
(mVariableModuleGlobal->LangCodes != NULL)) {
- //
- // When setting Lang, firstly get most matched language string from
supported language codes.
- //
- BestLang = VariableGetBestLanguage (mVariableModuleGlobal->LangCodes,
TRUE, Data, NULL);
- if (BestLang != NULL) {
- //
- // Get the corresponding index in language codes.
- //
- Index = GetIndexFromSupportedLangCodes
(mVariableModuleGlobal->LangCodes, BestLang, TRUE);
-
- //
- // Get the corresponding RFC4646 language tag according to ISO639
language tag.
- //
- BestPlatformLang = GetLangFromSupportedLangCodes
(mVariableModuleGlobal->PlatformLangCodes, Index, FALSE);
-
- //
- // Successfully convert Lang to PlatformLang, and set the
BestPlatformLang value into PlatformLang variable simultaneously.
- //
- FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable,
(VARIABLE_GLOBAL *)mVariableModuleGlobal);
-
- Status = UpdateVariable (L"PlatformLang", &gEfiGlobalVariableGuid,
BestPlatformLang,
- AsciiStrSize (BestPlatformLang), Attributes,
&Variable);
-
- DEBUG ((EFI_D_INFO, "Variable Driver Auto Update Lang, Lang:%a,
PlatformLang:%a\n", BestLang, BestPlatformLang));
- ASSERT_EFI_ERROR (Status);
- }
- }
- }
-}
-
-/**
- Update the variable region with Variable information. These are the same
- arguments as the EFI Variable services.
-
- @param[in] VariableName Name of variable
-
- @param[in] VendorGuid Guid of variable
-
- @param[in] Data Variable data
-
- @param[in] DataSize Size of data. 0 means delete
-
- @param[in] Attributes Attribues of the variable
-
- @param[in] Variable The variable information which is used to keep
track of variable usage.
-
- @retval EFI_SUCCESS The update operation is success.
-
- @retval EFI_OUT_OF_RESOURCES Variable region is full, can not write other
data into this region.
-
-**/
-EFI_STATUS
-EFIAPI
-UpdateVariable (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- IN VOID *Data,
- IN UINTN DataSize,
- IN UINT32 Attributes OPTIONAL,
- IN VARIABLE_POINTER_TRACK *Variable
- )
-{
- EFI_STATUS Status;
- VARIABLE_HEADER *NextVariable;
- UINTN VarNameSize;
- UINTN VarNameOffset;
- UINTN VarDataOffset;
- UINTN VarSize;
- VARIABLE_GLOBAL *Global;
- UINTN NonVolatileVarableStoreSize;
-
- Global = &mVariableModuleGlobal->VariableGlobal[Physical];
-
- if (Variable->CurrPtr != NULL) {
- //
- // Update/Delete existing variable
- //
-
- if (EfiAtRuntime ()) {
- //
- // If EfiAtRuntime and the variable is Volatile and Runtime Access,
- // the volatile is ReadOnly, and SetVariable should be aborted and
- // return EFI_WRITE_PROTECTED.
- //
- if (Variable->Volatile) {
- Status = EFI_WRITE_PROTECTED;
- goto Done;
- }
- //
- // Only variable have NV attribute can be updated/deleted in Runtime
- //
- if ((Variable->CurrPtr->Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {
- Status = EFI_INVALID_PARAMETER;
- goto Done;
- }
- }
-
- //
- // Setting a data variable with no access, or zero DataSize attributes
- // specified causes it to be deleted.
- //
- if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS |
EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {
- Variable->CurrPtr->State &= VAR_DELETED;
- UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE,
FALSE, TRUE, FALSE);
- Status = EFI_SUCCESS;
- goto Done;
- }
-
- //
- // If the variable is marked valid and the same data has been passed in
- // then return to the caller immediately.
- //
- if (Variable->CurrPtr->DataSize == DataSize &&
- CompareMem (Data, GetVariableDataPtr (Variable->CurrPtr), DataSize) == 0
- ) {
- Status = EFI_SUCCESS;
- goto Done;
- } else if (Variable->CurrPtr->State == VAR_ADDED) {
- //
- // Mark the old variable as in delete transition
- //
- Variable->CurrPtr->State &= VAR_IN_DELETED_TRANSITION;
- }
-
- } else {
- //
- // No found existing variable, Create a new variable
- //
-
- //
- // Make sure we are trying to create a new variable.
- // Setting a data variable with no access, or zero DataSize attributes
means to delete it.
- //
- if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS |
EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {
- Status = EFI_NOT_FOUND;
- goto Done;
- }
-
- //
- // Only variable have NV|RT attribute can be created in Runtime
- //
- if (EfiAtRuntime () &&
- (((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Attributes &
EFI_VARIABLE_NON_VOLATILE) == 0))) {
- Status = EFI_INVALID_PARAMETER;
- goto Done;
- }
- }
-
- //
- // Function part - create a new variable and copy the data.
- // Both update a variable and create a variable will come here.
- //
-
- VarNameOffset = sizeof (VARIABLE_HEADER);
- VarNameSize = StrSize (VariableName);
- VarDataOffset = VarNameOffset + VarNameSize + GET_PAD_SIZE (VarNameSize);
- VarSize = VarDataOffset + DataSize + GET_PAD_SIZE (DataSize);
-
- if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {
- NonVolatileVarableStoreSize = ((VARIABLE_STORE_HEADER
*)(UINTN)(Global->NonVolatileVariableBase))->Size;
- if ((((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0)
- && ((HEADER_ALIGN (VarSize) +
mVariableModuleGlobal->HwErrVariableTotalSize) > PcdGet32
(PcdHwErrStorageSize)))
- || (((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == 0)
- && ((HEADER_ALIGN (VarSize) +
mVariableModuleGlobal->CommonVariableTotalSize) > NonVolatileVarableStoreSize -
sizeof (VARIABLE_STORE_HEADER) - PcdGet32 (PcdHwErrStorageSize)))) {
- Status = EFI_OUT_OF_RESOURCES;
- goto Done;
- }
-
- NextVariable = (VARIABLE_HEADER *) (UINT8 *)
(mVariableModuleGlobal->NonVolatileLastVariableOffset
- + (UINTN) Global->NonVolatileVariableBase);
- mVariableModuleGlobal->NonVolatileLastVariableOffset += HEADER_ALIGN
(VarSize);
-
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) {
- mVariableModuleGlobal->HwErrVariableTotalSize += HEADER_ALIGN (VarSize);
- } else {
- mVariableModuleGlobal->CommonVariableTotalSize += HEADER_ALIGN (VarSize);
- }
- } else {
- if ((UINT32) (HEADER_ALIGN (VarSize) +
mVariableModuleGlobal->VolatileLastVariableOffset) >
- ((VARIABLE_STORE_HEADER *) ((UINTN)
(Global->VolatileVariableBase)))->Size
- ) {
- Status = EFI_OUT_OF_RESOURCES;
- goto Done;
- }
-
- NextVariable = (VARIABLE_HEADER *) (UINT8 *)
(mVariableModuleGlobal->VolatileLastVariableOffset
- + (UINTN) Global->VolatileVariableBase);
- mVariableModuleGlobal->VolatileLastVariableOffset += HEADER_ALIGN
(VarSize);
- }
-
- NextVariable->StartId = VARIABLE_DATA;
- NextVariable->Attributes = Attributes;
- NextVariable->State = VAR_ADDED;
- NextVariable->Reserved = 0;
-
- //
- // There will be pad bytes after Data, the NextVariable->NameSize and
- // NextVariable->NameSize should not include pad size so that variable
- // service can get actual size in GetVariable
- //
- NextVariable->NameSize = (UINT32)VarNameSize;
- NextVariable->DataSize = (UINT32)DataSize;
-
- CopyMem (&NextVariable->VendorGuid, VendorGuid, sizeof (EFI_GUID));
- CopyMem (
- (UINT8 *) ((UINTN) NextVariable + VarNameOffset),
- VariableName,
- VarNameSize
- );
- CopyMem (
- (UINT8 *) ((UINTN) NextVariable + VarDataOffset),
- Data,
- DataSize
- );
-
- //
- // Mark the old variable as deleted
- //
- if (Variable->CurrPtr != NULL) {
- Variable->CurrPtr->State &= VAR_DELETED;
- }
-
- UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE,
TRUE, FALSE, FALSE);
-
- Status = EFI_SUCCESS;
-
-Done:
- return Status;
-}
-
-/**
- Finds variable in storage blocks of volatile and non-volatile storage areas.
-
- This code finds variable in storage blocks of volatile and non-volatile
storage areas.
- If VariableName is an empty string, then we just return the first
- qualified variable without comparing VariableName and VendorGuid.
- Otherwise, VariableName and VendorGuid are compared.
-
- @param VariableName Name of the variable to be found.
- @param VendorGuid Vendor GUID to be found.
- @param PtrTrack VARIABLE_POINTER_TRACK structure for
output,
- including the range searched and the
target position.
- @param Global Pointer to VARIABLE_GLOBAL structure,
including
- base of volatile variable storage area,
base of
- NV variable storage area, and a lock.
-
- @retval EFI_INVALID_PARAMETER If VariableName is not an empty string,
while
- VendorGuid is NULL.
- @retval EFI_SUCCESS Variable successfully found.
- @retval EFI_NOT_FOUND Variable not found.
-
-**/
-EFI_STATUS
-FindVariable (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- OUT VARIABLE_POINTER_TRACK *PtrTrack,
- IN VARIABLE_GLOBAL *Global
- )
-{
- VARIABLE_HEADER *Variable[2];
- VARIABLE_STORE_HEADER *VariableStoreHeader[2];
- UINTN Index;
-
- //
- // 0: Non-Volatile, 1: Volatile
- //
- VariableStoreHeader[0] = (VARIABLE_STORE_HEADER *) ((UINTN)
Global->NonVolatileVariableBase);
- VariableStoreHeader[1] = (VARIABLE_STORE_HEADER *) ((UINTN)
Global->VolatileVariableBase);
-
- //
- // Start Pointers for the variable.
- // Actual Data Pointer where data can be written.
- //
- Variable[0] = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader[0] + 1);
- Variable[1] = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader[1] + 1);
-
- if (VariableName[0] != 0 && VendorGuid == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- //
- // Find the variable by walk through non-volatile and volatile variable store
- //
- for (Index = 0; Index < 2; Index++) {
- PtrTrack->StartPtr = (VARIABLE_HEADER *) HEADER_ALIGN
(VariableStoreHeader[Index] + 1);
- PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Index]);
-
- while ((Variable[Index] < GetEndPointer (VariableStoreHeader[Index])) &&
(Variable[Index] != NULL)) {
- if (Variable[Index]->StartId == VARIABLE_DATA && Variable[Index]->State
== VAR_ADDED) {
- if (!(EfiAtRuntime () && ((Variable[Index]->Attributes &
EFI_VARIABLE_RUNTIME_ACCESS) == 0))) {
- if (VariableName[0] == 0) {
- PtrTrack->CurrPtr = Variable[Index];
- PtrTrack->Volatile = (BOOLEAN) Index;
- return EFI_SUCCESS;
- } else {
- if (CompareGuid (VendorGuid, &Variable[Index]->VendorGuid)) {
- if (CompareMem (VariableName, GET_VARIABLE_NAME_PTR
(Variable[Index]), Variable[Index]->NameSize) == 0) {
- PtrTrack->CurrPtr = Variable[Index];
- PtrTrack->Volatile = (BOOLEAN) Index;
- return EFI_SUCCESS;
- }
- }
- }
- }
- }
-
- Variable[Index] = GetNextVariablePtr (Variable[Index]);
- }
- }
- PtrTrack->CurrPtr = NULL;
- return EFI_NOT_FOUND;
-}
-
-/**
- This code finds variable in storage blocks (Volatile or Non-Volatile).
-
- @param VariableName A Null-terminated Unicode string that is the
name of
- the vendor's variable.
- @param VendorGuid A unique identifier for the vendor.
- @param Attributes If not NULL, a pointer to the memory location
to return the
- attributes bitmask for the variable.
- @param DataSize Size of Data found. If size is less than the
- data, this value contains the required size.
- @param Data On input, the size in bytes of the return
Data buffer.
- On output, the size of data returned in Data.
- @param Global Pointer to VARIABLE_GLOBAL structure
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_NOT_FOUND The variable was not found.
- @retval EFI_BUFFER_TOO_SMALL DataSize is too small for the result.
DataSize has
- been updated with the size needed to complete
the request.
- @retval EFI_INVALID_PARAMETER VariableName or VendorGuid or DataSize is
NULL.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuGetVariable (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- OUT UINT32 *Attributes OPTIONAL,
- IN OUT UINTN *DataSize,
- OUT VOID *Data,
- IN VARIABLE_GLOBAL *Global
- )
-{
- VARIABLE_POINTER_TRACK Variable;
- UINTN VarDataSize;
- EFI_STATUS Status;
- UINT8 *VariableDataPtr;
-
- if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (VariableName[0] == 0) {
- return EFI_NOT_FOUND;
- }
-
- AcquireLockOnlyAtBootTime(&Global->VariableServicesLock);
-
- //
- // Find existing variable
- //
- Status = FindVariable (VariableName, VendorGuid, &Variable, Global);
-
- if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {
- goto Done;
- }
- //
- // Get data size
- //
- VarDataSize = Variable.CurrPtr->DataSize;
- if (*DataSize >= VarDataSize) {
- if (Data == NULL) {
- Status = EFI_INVALID_PARAMETER;
- goto Done;
- }
- VariableDataPtr = GetVariableDataPtr (Variable.CurrPtr);
- ASSERT (VariableDataPtr != NULL);
-
- CopyMem (Data, VariableDataPtr, VarDataSize);
- if (Attributes != NULL) {
- *Attributes = Variable.CurrPtr->Attributes;
- }
-
- *DataSize = VarDataSize;
- UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE,
FALSE, FALSE, FALSE);
- Status = EFI_SUCCESS;
- goto Done;
- } else {
- *DataSize = VarDataSize;
- Status = EFI_BUFFER_TOO_SMALL;
- goto Done;
- }
-
-Done:
- ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);
- return Status;
-}
-
-/**
-
- This code Finds the Next available variable.
-
- @param VariableNameSize The size of the VariableName buffer. The size
must be large enough to fit input
- string supplied in VariableName buffer.
- @param VariableName On input, supplies the last VariableName that
was returned by GetNextVariableName().
- On output, returns the Null-terminated
Unicode string of the current variable.
- @param VendorGuid On input, supplies the last VendorGuid that
was returned by GetNextVariableName().
- On output, returns the VendorGuid of the
current variable.
- @param Global Pointer to VARIABLE_GLOBAL structure.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_NOT_FOUND The next variable was not found.
- @retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the
result.
- VariableNameSize has been updated with the
size needed to complete the request.
- @retval EFI_INVALID_PARAMETER VariableNameSize or VariableName or
VendorGuid is NULL.
- @retval EFI_INVALID_PARAMETER The input values of VariableName and
VendorGuid are not a name and
- GUID of an existing variable.
- @retval EFI_INVALID_PARAMETER Null-terminator is not found in the first
VariableNameSize bytes of
- the input VariableName buffer.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuGetNextVariableName (
- IN OUT UINTN *VariableNameSize,
- IN OUT CHAR16 *VariableName,
- IN OUT EFI_GUID *VendorGuid,
- IN VARIABLE_GLOBAL *Global
- )
-{
- VARIABLE_POINTER_TRACK Variable;
- UINTN VarNameSize;
- EFI_STATUS Status;
- UINTN MaxLen;
-
- if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Calculate the possible maximum length of name string, including the Null
terminator.
- //
- MaxLen = *VariableNameSize / sizeof (CHAR16);
- if ((MaxLen == 0) || (StrnLenS (VariableName, MaxLen) == MaxLen)) {
- //
- // Null-terminator is not found in the first VariableNameSize bytes of the
input VariableName buffer,
- // follow spec to return EFI_INVALID_PARAMETER.
- //
- return EFI_INVALID_PARAMETER;
- }
-
- AcquireLockOnlyAtBootTime(&Global->VariableServicesLock);
-
- Status = FindVariable (VariableName, VendorGuid, &Variable, Global);
-
- if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {
- //
- // For VariableName is an empty string, FindVariable() will try to find
and return
- // the first qualified variable, and if FindVariable() returns error
(EFI_NOT_FOUND)
- // as no any variable is found, still go to return the error
(EFI_NOT_FOUND).
- //
- if (VariableName[0] != 0) {
- //
- // For VariableName is not an empty string, and FindVariable() returns
error as
- // VariableName and VendorGuid are not a name and GUID of an existing
variable,
- // there is no way to get next variable, follow spec to return
EFI_INVALID_PARAMETER.
- //
- Status = EFI_INVALID_PARAMETER;
- }
- goto Done;
- }
-
- while (TRUE) {
- if (VariableName[0] != 0) {
- //
- // If variable name is not NULL, get next variable
- //
- Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);
- }
- //
- // If both volatile and non-volatile variable store are parsed,
- // return not found
- //
- if (Variable.CurrPtr >= Variable.EndPtr || Variable.CurrPtr == NULL) {
- Variable.Volatile = (BOOLEAN) (Variable.Volatile ^ ((BOOLEAN) 0x1));
- if (Variable.Volatile) {
- Variable.StartPtr = (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN)
(Global->VolatileVariableBase + sizeof (VARIABLE_STORE_HEADER)));
- Variable.EndPtr = (VARIABLE_HEADER *) GetEndPointer
((VARIABLE_STORE_HEADER *) ((UINTN) Global->VolatileVariableBase));
- } else {
- Status = EFI_NOT_FOUND;
- goto Done;
- }
-
- Variable.CurrPtr = Variable.StartPtr;
- if (Variable.CurrPtr->StartId != VARIABLE_DATA) {
- continue;
- }
- }
- //
- // Variable is found
- //
- if (Variable.CurrPtr->StartId == VARIABLE_DATA && Variable.CurrPtr->State
== VAR_ADDED) {
- if (!(EfiAtRuntime () && ((Variable.CurrPtr->Attributes &
EFI_VARIABLE_RUNTIME_ACCESS) == 0))) {
- VarNameSize = Variable.CurrPtr->NameSize;
- if (VarNameSize <= *VariableNameSize) {
- CopyMem (
- VariableName,
- GET_VARIABLE_NAME_PTR (Variable.CurrPtr),
- VarNameSize
- );
- CopyMem (
- VendorGuid,
- &Variable.CurrPtr->VendorGuid,
- sizeof (EFI_GUID)
- );
- Status = EFI_SUCCESS;
- } else {
- Status = EFI_BUFFER_TOO_SMALL;
- }
-
- *VariableNameSize = VarNameSize;
- goto Done;
- }
- }
- }
-
-Done:
- ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);
- return Status;
-
-}
-
-/**
-
- This code sets variable in storage blocks (Volatile or Non-Volatile).
-
- @param VariableName A Null-terminated Unicode string that is the
name of the vendor's
- variable. Each VariableName is unique for
each
- VendorGuid. VariableName must contain 1 or
more
- Unicode characters. If VariableName is an
empty Unicode
- string, then EFI_INVALID_PARAMETER is
returned.
- @param VendorGuid A unique identifier for the vendor
- @param Attributes Attributes bitmask to set for the variable
- @param DataSize The size in bytes of the Data buffer. A size
of zero causes the
- variable to be deleted.
- @param Data The contents for the variable
- @param Global Pointer to VARIABLE_GLOBAL structure
- @param VolatileOffset The offset of last volatile variable
- @param NonVolatileOffset The offset of last non-volatile variable
-
- @retval EFI_SUCCESS The firmware has successfully stored the
variable and its data as
- defined by the Attributes.
- @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was
supplied, or the
- DataSize exceeds the maximum allowed, or
VariableName is an empty
- Unicode string, or VendorGuid is NULL.
- @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the
variable and its data.
- @retval EFI_DEVICE_ERROR The variable could not be saved due to a
hardware failure.
- @retval EFI_WRITE_PROTECTED The variable in question is read-only or
cannot be deleted.
- @retval EFI_NOT_FOUND The variable trying to be updated or deleted
was not found.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSetVariable (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- IN UINT32 Attributes,
- IN UINTN DataSize,
- IN VOID *Data,
- IN VARIABLE_GLOBAL *Global,
- IN UINTN *VolatileOffset,
- IN UINTN *NonVolatileOffset
- )
-{
- VARIABLE_POINTER_TRACK Variable;
- EFI_STATUS Status;
-
- //
- // Check input parameters
- //
- if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (DataSize != 0 && Data == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Not support authenticated variable write yet.
- //
- if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Make sure if runtime bit is set, boot service bit is set also
- //
- if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS |
EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {
- return EFI_INVALID_PARAMETER;
- }
-
-
- if ((UINTN)(~0) - DataSize < StrSize(VariableName)){
- //
- // Prevent whole variable size overflow
- //
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // The size of the VariableName, including the Unicode Null in bytes plus
- // the DataSize is limited to maximum size of PcdGet32
(PcdMaxHardwareErrorVariableSize)
- // bytes for HwErrRec, and PcdGet32 (PcdMaxVariableSize) bytes for the
others.
- //
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) ==
EFI_VARIABLE_HARDWARE_ERROR_RECORD) {
- if (StrSize (VariableName) + DataSize > PcdGet32
(PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER)) {
- return EFI_INVALID_PARAMETER;
- }
- //
- // According to UEFI spec, HARDWARE_ERROR_RECORD variable name convention
should be L"HwErrRecXXXX"
- //
- if (StrnCmp(VariableName, L"HwErrRec", StrLen(L"HwErrRec")) != 0) {
- return EFI_INVALID_PARAMETER;
- }
- } else {
- //
- // The size of the VariableName, including the Unicode Null in bytes plus
- // the DataSize is limited to maximum size of PcdGet32 (PcdMaxVariableSize)
bytes.
- //
- if (StrSize (VariableName) + DataSize > PcdGet32 (PcdMaxVariableSize) -
sizeof (VARIABLE_HEADER)) {
- return EFI_INVALID_PARAMETER;
- }
- }
-
- AcquireLockOnlyAtBootTime(&Global->VariableServicesLock);
-
- //
- // Check whether the input variable is already existed
- //
-
- Status = FindVariable (VariableName, VendorGuid, &Variable, Global);
-
- //
- // Hook the operation of setting PlatformLangCodes/PlatformLang and
LangCodes/Lang
- //
- AutoUpdateLangVariable (VariableName, Data, DataSize);
-
- Status = UpdateVariable (VariableName, VendorGuid, Data, DataSize,
Attributes, &Variable);
-
- ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);
- return Status;
-}
-
-/**
-
- This code returns information about the EFI variables.
-
- @param Attributes Attributes bitmask to specify the type
of variables
- on which to return information.
- @param MaximumVariableStorageSize On output the maximum size of the
storage space available for
- the EFI variables associated with the
attributes specified.
- @param RemainingVariableStorageSize Returns the remaining size of the
storage space available for EFI
- variables associated with the
attributes specified.
- @param MaximumVariableSize Returns the maximum size of an
individual EFI variable
- associated with the attributes
specified.
- @param Global Pointer to VARIABLE_GLOBAL structure.
-
- @retval EFI_SUCCESS Valid answer returned.
- @retval EFI_INVALID_PARAMETER An invalid combination of attribute
bits was supplied
- @retval EFI_UNSUPPORTED The attribute is not supported on this
platform, and the
- MaximumVariableStorageSize,
RemainingVariableStorageSize,
- MaximumVariableSize are undefined.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuQueryVariableInfo (
- IN UINT32 Attributes,
- OUT UINT64 *MaximumVariableStorageSize,
- OUT UINT64 *RemainingVariableStorageSize,
- OUT UINT64 *MaximumVariableSize,
- IN VARIABLE_GLOBAL *Global
- )
-{
- VARIABLE_HEADER *Variable;
- VARIABLE_HEADER *NextVariable;
- UINT64 VariableSize;
- VARIABLE_STORE_HEADER *VariableStoreHeader;
- UINT64 CommonVariableTotalSize;
- UINT64 HwErrVariableTotalSize;
-
- CommonVariableTotalSize = 0;
- HwErrVariableTotalSize = 0;
-
- if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize ==
NULL || MaximumVariableSize == NULL || Attributes == 0) {
- return EFI_INVALID_PARAMETER;
- }
-
- if((Attributes & (EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS |
EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == 0) {
- //
- // Make sure the Attributes combination is supported by the platform.
- //
- return EFI_UNSUPPORTED;
- } else if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS |
EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {
- //
- // Make sure if runtime bit is set, boot service bit is set also.
- //
- return EFI_INVALID_PARAMETER;
- } else if (EfiAtRuntime () && ((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) ==
0)) {
- //
- // Make sure RT Attribute is set if we are in Runtime phase.
- //
- return EFI_INVALID_PARAMETER;
- } else if ((Attributes & (EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {
- //
- // Make sure Hw Attribute is set with NV.
- //
- return EFI_INVALID_PARAMETER;
- } else if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) {
- //
- // Not support authentiated variable write yet.
- //
- return EFI_UNSUPPORTED;
- }
-
- AcquireLockOnlyAtBootTime(&Global->VariableServicesLock);
-
- if((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {
- //
- // Query is Volatile related.
- //
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN)
Global->VolatileVariableBase);
- } else {
- //
- // Query is Non-Volatile related.
- //
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN)
Global->NonVolatileVariableBase);
- }
-
- //
- // Now let's fill *MaximumVariableStorageSize *RemainingVariableStorageSize
- // with the storage size (excluding the storage header size)
- //
- *MaximumVariableStorageSize = VariableStoreHeader->Size - sizeof
(VARIABLE_STORE_HEADER);
-
- //
- // Harware error record variable needs larger size.
- //
- if ((Attributes & (EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {
- *MaximumVariableStorageSize = PcdGet32 (PcdHwErrStorageSize);
- *MaximumVariableSize = PcdGet32 (PcdMaxHardwareErrorVariableSize) - sizeof
(VARIABLE_HEADER);
- } else {
- if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {
- ASSERT (PcdGet32 (PcdHwErrStorageSize) < VariableStoreHeader->Size);
- *MaximumVariableStorageSize = VariableStoreHeader->Size - sizeof
(VARIABLE_STORE_HEADER) - PcdGet32 (PcdHwErrStorageSize);
- }
-
- //
- // Let *MaximumVariableSize be PcdGet32 (PcdMaxVariableSize) with the
exception of the variable header size.
- //
- *MaximumVariableSize = PcdGet32 (PcdMaxVariableSize) - sizeof
(VARIABLE_HEADER);
- }
-
- //
- // Point to the starting address of the variables.
- //
- Variable = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader + 1);
-
- //
- // Now walk through the related variable store.
- //
- while (Variable < GetEndPointer (VariableStoreHeader)) {
- NextVariable = GetNextVariablePtr(Variable);
- if (NextVariable == NULL) {
- break;
- }
- VariableSize = (UINT64) (UINTN) NextVariable - (UINT64) (UINTN) Variable;
-
- if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) ==
EFI_VARIABLE_HARDWARE_ERROR_RECORD) {
- HwErrVariableTotalSize += VariableSize;
- } else {
- CommonVariableTotalSize += VariableSize;
- }
-
- //
- // Go to the next one.
- //
- Variable = NextVariable;
- }
-
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) ==
EFI_VARIABLE_HARDWARE_ERROR_RECORD){
- *RemainingVariableStorageSize = *MaximumVariableStorageSize -
HwErrVariableTotalSize;
- } else {
- *RemainingVariableStorageSize = *MaximumVariableStorageSize -
CommonVariableTotalSize;
- }
-
- if (*RemainingVariableStorageSize < sizeof (VARIABLE_HEADER)) {
- *MaximumVariableSize = 0;
- } else if ((*RemainingVariableStorageSize - sizeof (VARIABLE_HEADER)) <
*MaximumVariableSize) {
- *MaximumVariableSize = *RemainingVariableStorageSize - sizeof
(VARIABLE_HEADER);
- }
-
- ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);
- return EFI_SUCCESS;
-}
-
-/**
- Initializes variable store area.
-
- This function allocates memory space for variable store area and initializes
its attributes.
-
- @param VolatileStore Indicates if the variable store is volatile.
-
-**/
-EFI_STATUS
-InitializeVariableStore (
- IN BOOLEAN VolatileStore
- )
-{
- EFI_STATUS Status;
- VARIABLE_STORE_HEADER *VariableStore;
- BOOLEAN FullyInitializeStore;
- EFI_PHYSICAL_ADDRESS *VariableBase;
- UINTN *LastVariableOffset;
- VARIABLE_STORE_HEADER *VariableStoreHeader;
- VARIABLE_HEADER *Variable;
- VOID *VariableData;
- EFI_HOB_GUID_TYPE *GuidHob;
-
- FullyInitializeStore = TRUE;
-
- if (VolatileStore) {
- VariableBase =
&mVariableModuleGlobal->VariableGlobal[Physical].VolatileVariableBase;
- LastVariableOffset = &mVariableModuleGlobal->VolatileLastVariableOffset;
- } else {
- VariableBase =
&mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase;
- LastVariableOffset = &mVariableModuleGlobal->NonVolatileLastVariableOffset;
- }
-
- //
- // Note that in EdkII variable driver implementation, Hardware Error Record
type variable
- // is stored with common variable in the same NV region. So the platform
integrator should
- // ensure that the value of PcdHwErrStorageSize is less than or equal to the
value of
- // PcdVariableStoreSize.
- //
- ASSERT (PcdGet32 (PcdHwErrStorageSize) <= PcdGet32 (PcdVariableStoreSize));
-
- //
- // Allocate memory for variable store.
- //
- if (VolatileStore || (PcdGet64 (PcdEmuVariableNvStoreReserved) == 0)) {
- VariableStore = (VARIABLE_STORE_HEADER *) AllocateRuntimePool (PcdGet32
(PcdVariableStoreSize));
- } else {
- //
- // A memory location has been reserved for the NV variable store. Certain
- // platforms may be able to preserve a memory range across system resets,
- // thereby providing better NV variable emulation.
- //
- VariableStore =
- (VARIABLE_STORE_HEADER *)(VOID*)(UINTN)
- PcdGet64 (PcdEmuVariableNvStoreReserved);
- if (
- (VariableStore->Size == PcdGet32 (PcdVariableStoreSize)) &&
- (VariableStore->Format == VARIABLE_STORE_FORMATTED) &&
- (VariableStore->State == VARIABLE_STORE_HEALTHY)
- ) {
- DEBUG((
- EFI_D_INFO,
- "Variable Store reserved at %p appears to be valid\n",
- VariableStore
- ));
- FullyInitializeStore = FALSE;
- }
- }
-
- if (NULL == VariableStore) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- if (FullyInitializeStore) {
- SetMem (VariableStore, PcdGet32 (PcdVariableStoreSize), 0xff);
- }
-
- //
- // Variable Specific Data
- //
- *VariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VariableStore;
- InitializeLocationForLastVariableOffset (VariableStore, LastVariableOffset);
-
- CopyGuid (&VariableStore->Signature, &gEfiVariableGuid);
- VariableStore->Size = PcdGet32 (PcdVariableStoreSize);
- VariableStore->Format = VARIABLE_STORE_FORMATTED;
- VariableStore->State = VARIABLE_STORE_HEALTHY;
- VariableStore->Reserved = 0;
- VariableStore->Reserved1 = 0;
-
- if (!VolatileStore) {
- //
- // Get HOB variable store.
- //
- GuidHob = GetFirstGuidHob (&gEfiVariableGuid);
- if (GuidHob != NULL) {
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) GET_GUID_HOB_DATA
(GuidHob);
- if (CompareGuid (&VariableStoreHeader->Signature, &gEfiVariableGuid) &&
- (VariableStoreHeader->Format == VARIABLE_STORE_FORMATTED) &&
- (VariableStoreHeader->State == VARIABLE_STORE_HEALTHY)
- ) {
- DEBUG ((EFI_D_INFO, "HOB Variable Store appears to be valid.\n"));
- //
- // Flush the HOB variable to Emulation Variable storage.
- //
- for ( Variable = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader
+ 1)
- ; (Variable < GetEndPointer (VariableStoreHeader) && (Variable !=
NULL))
- ; Variable = GetNextVariablePtr (Variable)
- ) {
- ASSERT (Variable->State == VAR_ADDED);
- ASSERT ((Variable->Attributes & EFI_VARIABLE_NON_VOLATILE) != 0);
- VariableData = GetVariableDataPtr (Variable);
- Status = EmuSetVariable (
- GET_VARIABLE_NAME_PTR (Variable),
- &Variable->VendorGuid,
- Variable->Attributes,
- Variable->DataSize,
- VariableData,
- &mVariableModuleGlobal->VariableGlobal[Physical],
- &mVariableModuleGlobal->VolatileLastVariableOffset,
- &mVariableModuleGlobal->NonVolatileLastVariableOffset
- );
- ASSERT_EFI_ERROR (Status);
- }
- }
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Initializes variable store area for non-volatile and volatile variable.
-
- This function allocates and initializes memory space for global context of
ESAL
- variable service and variable store area for non-volatile and volatile
variable.
-
- @param ImageHandle The Image handle of this driver.
- @param SystemTable The pointer of EFI_SYSTEM_TABLE.
-
- @retval EFI_SUCCESS Function successfully executed.
- @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.
-
-**/
-EFI_STATUS
-EFIAPI
-VariableCommonInitialize (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_STATUS Status;
-
- //
- // Allocate memory for mVariableModuleGlobal
- //
- mVariableModuleGlobal = (ESAL_VARIABLE_GLOBAL *) AllocateRuntimeZeroPool (
- sizeof
(ESAL_VARIABLE_GLOBAL)
- );
- if (NULL == mVariableModuleGlobal) {
- return EFI_OUT_OF_RESOURCES;
- }
-
-
EfiInitializeLock(&mVariableModuleGlobal->VariableGlobal[Physical].VariableServicesLock,
TPL_NOTIFY);
-
- //
- // Intialize volatile variable store
- //
- Status = InitializeVariableStore (TRUE);
- if (EFI_ERROR (Status)) {
- FreePool(mVariableModuleGlobal);
- return Status;
- }
- //
- // Intialize non volatile variable store
- //
- Status = InitializeVariableStore (FALSE);
-
- return Status;
-}
diff --git
a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
b/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
deleted file mode 100644
index 12d52dd130e3..000000000000
--- a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
+++ /dev/null
@@ -1,88 +0,0 @@
-## @file
-# Emulation Variable for EFI_RUNTIME_SERVICES.
-#
-# This module installs variable arch protocol and variable write arch protocol
to provide
-# four EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName and
QueryVariableInfo.
-#
-# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-#
-# This program and the accompanying materials
-# are licensed and made available under the terms and conditions of the BSD
License
-# which accompanies this distribution. The full text of the license may be
found at
-# http://opensource.org/licenses/bsd-license.php
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
IMPLIED.
-#
-#
-##
-
-[Defines]
- INF_VERSION = 0x00010005
- BASE_NAME = EmuVariableRuntimeDxe
- MODULE_UNI_FILE = EmuVariableRuntimeDxe.uni
- FILE_GUID = 02B01AD5-7E59-43e8-A6D8-238180613A5A
- MODULE_TYPE = DXE_RUNTIME_DRIVER
- VERSION_STRING = 1.0
- ENTRY_POINT = VariableServiceInitialize
-
-#
-# The following information is for reference only and not required by the
build tools.
-#
-# VALID_ARCHITECTURES = IA32 X64 EBC
-#
-
-[Sources]
- InitVariable.c
- EmuVariable.c
- Variable.h
-
-
-[Packages]
- MdePkg/MdePkg.dec
- MdeModulePkg/MdeModulePkg.dec
-
-
-[LibraryClasses]
- BaseLib
- UefiLib
- UefiBootServicesTableLib
- UefiDriverEntryPoint
- UefiRuntimeLib
- DebugLib
- MemoryAllocationLib
- BaseMemoryLib
- HobLib
- PcdLib
-
-[Protocols]
- gEfiVariableArchProtocolGuid ## PRODUCES
- gEfiVariableWriteArchProtocolGuid ## PRODUCES
-
-[Guids]
- gEfiEventVirtualAddressChangeGuid ## CONSUMES ##
Event
- ## SOMETIMES_CONSUMES ## Variable:L"PlatformLang"
- ## SOMETIMES_PRODUCES ## Variable:L"PlatformLang"
- ## SOMETIMES_CONSUMES ## Variable:L"Lang"
- ## SOMETIMES_PRODUCES ## Variable:L"Lang"
- gEfiGlobalVariableGuid
- ## PRODUCES ## GUID # Signature of Variable store header
- ## CONSUMES ## GUID # Signature of Variable store header
- ## SOMETIMES_CONSUMES ## HOB
- ## SOMETIMES_PRODUCES ## SystemTable
- gEfiVariableGuid
-
-[Pcd]
- gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved ## CONSUMES
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize ## CONSUMES
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize ## CONSUMES
- gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize ## CONSUMES
- gEfiMdeModulePkgTokenSpaceGuid.PcdHwErrStorageSize ## CONSUMES
-
-[FeaturePcd]
- gEfiMdeModulePkgTokenSpaceGuid.PcdVariableCollectStatistics ## CONSUMES #
statistic the information of variable.
-
-[Depex]
- TRUE
-
-[UserExtensions.TianoCore."ExtraFiles"]
- EmuVariableRuntimeDxeExtra.uni
diff --git
a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.uni
b/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.uni
deleted file mode 100644
index 6ad601812169..000000000000
--- a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.uni
+++ /dev/null
@@ -1,22 +0,0 @@
-// /** @file
-// Emulation Variable for EFI_RUNTIME_SERVICES.
-//
-// This module installs variable arch protocol and variable write arch
protocol to provide
-// four EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName
and QueryVariableInfo.
-//
-// Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
-//
-// This program and the accompanying materials
-// are licensed and made available under the terms and conditions of the BSD
License
-// which accompanies this distribution. The full text of the license may be
found at
-// http://opensource.org/licenses/bsd-license.php
-// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
IMPLIED.
-//
-// **/
-
-
-#string STR_MODULE_ABSTRACT #language en-US "Emulation Variable
for EFI_RUNTIME_SERVICES"
-
-#string STR_MODULE_DESCRIPTION #language en-US "This module installs
variable arch protocol and variable write arch protocol to provide four
EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName and
QueryVariableInfo."
-
diff --git
a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxeExtra.uni
b/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxeExtra.uni
deleted file mode 100644
index a5000373733e..000000000000
---
a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxeExtra.uni
+++ /dev/null
@@ -1,19 +0,0 @@
-// /** @file
-// EmuVariableRuntimeDxe Localized Strings and Content
-//
-// Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>
-//
-// This program and the accompanying materials
-// are licensed and made available under the terms and conditions of the BSD
License
-// which accompanies this distribution. The full text of the license may be
found at
-// http://opensource.org/licenses/bsd-license.php
-// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
IMPLIED.
-//
-// **/
-
-#string STR_PROPERTIES_MODULE_NAME
-#language en-US
-"Emulation Variable DXE Driver"
-
-
diff --git a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/InitVariable.c
b/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/InitVariable.c
deleted file mode 100644
index dac0464253d6..000000000000
--- a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/InitVariable.c
+++ /dev/null
@@ -1,259 +0,0 @@
-/** @file
-
- Implment all four UEFI runtime variable services and
- install variable architeture protocol.
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD
License
-which accompanies this distribution. The full text of the license may be
found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "Variable.h"
-
-EFI_EVENT mVirtualAddressChangeEvent = NULL;
-
-/**
-
- This code finds variable in storage blocks (Volatile or Non-Volatile).
-
- @param VariableName Name of Variable to be found.
- @param VendorGuid Variable vendor GUID.
- @param Attributes Attribute value of the variable found.
- @param DataSize Size of Data found. If size is less than
the
- data, this value contains the required
size.
- @param Data The buffer to return the contents of the
variable. May be NULL
- with a zero DataSize in order to determine
the size buffer needed.
-
- @return EFI_INVALID_PARAMETER Invalid parameter
- @return EFI_SUCCESS Find the specified variable
- @return EFI_NOT_FOUND Not found
- @return EFI_BUFFER_TO_SMALL DataSize is too small for the result
-
-**/
-EFI_STATUS
-EFIAPI
-RuntimeServiceGetVariable (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- OUT UINT32 *Attributes OPTIONAL,
- IN OUT UINTN *DataSize,
- OUT VOID *Data OPTIONAL
- )
-{
- return EmuGetVariable (
- VariableName,
- VendorGuid,
- Attributes OPTIONAL,
- DataSize,
- Data,
- &mVariableModuleGlobal->VariableGlobal[Physical]
- );
-}
-
-/**
-
- This code Finds the Next available variable.
-
- @param VariableNameSize The size of the VariableName buffer. The size
must be large enough to fit input
- string supplied in VariableName buffer.
- @param VariableName On input, supplies the last VariableName that
was returned by GetNextVariableName().
- On output, returns the Null-terminated
Unicode string of the current variable.
- @param VendorGuid On input, supplies the last VendorGuid that
was returned by GetNextVariableName().
- On output, returns the VendorGuid of the
current variable.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_NOT_FOUND The next variable was not found.
- @retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the
result.
- VariableNameSize has been updated with the
size needed to complete the request.
- @retval EFI_INVALID_PARAMETER VariableNameSize or VariableName or
VendorGuid is NULL.
- @retval EFI_INVALID_PARAMETER The input values of VariableName and
VendorGuid are not a name and
- GUID of an existing variable.
- @retval EFI_INVALID_PARAMETER Null-terminator is not found in the first
VariableNameSize bytes of
- the input VariableName buffer.
-
-**/
-EFI_STATUS
-EFIAPI
-RuntimeServiceGetNextVariableName (
- IN OUT UINTN *VariableNameSize,
- IN OUT CHAR16 *VariableName,
- IN OUT EFI_GUID *VendorGuid
- )
-{
- return EmuGetNextVariableName (
- VariableNameSize,
- VariableName,
- VendorGuid,
- &mVariableModuleGlobal->VariableGlobal[Physical]
- );
-}
-
-/**
-
- This code sets variable in storage blocks (Volatile or Non-Volatile).
-
- @param VariableName Name of Variable to be found
- @param VendorGuid Variable vendor GUID
- @param Attributes Attribute value of the variable found
- @param DataSize Size of Data found. If size is less
than the
- data, this value contains the
required size.
- @param Data Data pointer
-
- @return EFI_INVALID_PARAMETER Invalid parameter
- @return EFI_SUCCESS Set successfully
- @return EFI_OUT_OF_RESOURCES Resource not enough to set variable
- @return EFI_NOT_FOUND Not found
- @return EFI_WRITE_PROTECTED Variable is read-only
-
-**/
-EFI_STATUS
-EFIAPI
-RuntimeServiceSetVariable (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- IN UINT32 Attributes,
- IN UINTN DataSize,
- IN VOID *Data
- )
-{
- return EmuSetVariable (
- VariableName,
- VendorGuid,
- Attributes,
- DataSize,
- Data,
- &mVariableModuleGlobal->VariableGlobal[Physical],
- &mVariableModuleGlobal->VolatileLastVariableOffset,
- &mVariableModuleGlobal->NonVolatileLastVariableOffset
- );
-}
-
-/**
-
- This code returns information about the EFI variables.
-
- @param Attributes Attributes bitmask to specify the type
of variables
- on which to return information.
- @param MaximumVariableStorageSize Pointer to the maximum size of the
storage space available
- for the EFI variables associated with
the attributes specified.
- @param RemainingVariableStorageSize Pointer to the remaining size of the
storage space available
- for EFI variables associated with the
attributes specified.
- @param MaximumVariableSize Pointer to the maximum size of an
individual EFI variables
- associated with the attributes
specified.
-
- @return EFI_INVALID_PARAMETER An invalid combination of attribute
bits was supplied.
- @return EFI_SUCCESS Query successfully.
- @return EFI_UNSUPPORTED The attribute is not supported on this
platform.
-
-**/
-EFI_STATUS
-EFIAPI
-RuntimeServiceQueryVariableInfo (
- IN UINT32 Attributes,
- OUT UINT64 *MaximumVariableStorageSize,
- OUT UINT64 *RemainingVariableStorageSize,
- OUT UINT64 *MaximumVariableSize
- )
-{
- return EmuQueryVariableInfo (
- Attributes,
- MaximumVariableStorageSize,
- RemainingVariableStorageSize,
- MaximumVariableSize,
- &mVariableModuleGlobal->VariableGlobal[Physical]
- );
-}
-
-/**
- Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.
-
- This is a notification function registered on
EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
- It convers pointer to new virtual address.
-
- @param Event Event whose notification function is being invoked.
- @param Context Pointer to the notification function's context.
-
-**/
-VOID
-EFIAPI
-VariableClassAddressChangeEvent (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-{
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLangCodes);
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->LangCodes);
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLang);
- EfiConvertPointer (
- 0x0,
- (VOID **)
&mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase
- );
- EfiConvertPointer (
- 0x0,
- (VOID **)
&mVariableModuleGlobal->VariableGlobal[Physical].VolatileVariableBase
- );
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal);
-}
-
-/**
- EmuVariable Driver main entry point. The Variable driver places the 4 EFI
- runtime services in the EFI System Table and installs arch protocols
- for variable read and write services being available. It also registers
- notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
-
- @param[in] ImageHandle The firmware allocated handle for the EFI image.
- @param[in] SystemTable A pointer to the EFI System Table.
-
- @retval EFI_SUCCESS Variable service successfully initialized.
-
-**/
-EFI_STATUS
-EFIAPI
-VariableServiceInitialize (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_HANDLE NewHandle;
- EFI_STATUS Status;
-
- Status = VariableCommonInitialize (ImageHandle, SystemTable);
- ASSERT_EFI_ERROR (Status);
-
- SystemTable->RuntimeServices->GetVariable =
RuntimeServiceGetVariable;
- SystemTable->RuntimeServices->GetNextVariableName =
RuntimeServiceGetNextVariableName;
- SystemTable->RuntimeServices->SetVariable =
RuntimeServiceSetVariable;
- SystemTable->RuntimeServices->QueryVariableInfo =
RuntimeServiceQueryVariableInfo;
-
- //
- // Now install the Variable Runtime Architectural Protocol on a new handle
- //
- NewHandle = NULL;
- Status = gBS->InstallMultipleProtocolInterfaces (
- &NewHandle,
- &gEfiVariableArchProtocolGuid,
- NULL,
- &gEfiVariableWriteArchProtocolGuid,
- NULL,
- NULL
- );
- ASSERT_EFI_ERROR (Status);
-
- Status = gBS->CreateEventEx (
- EVT_NOTIFY_SIGNAL,
- TPL_NOTIFY,
- VariableClassAddressChangeEvent,
- NULL,
- &gEfiEventVirtualAddressChangeGuid,
- &mVirtualAddressChangeEvent
- );
- ASSERT_EFI_ERROR (Status);
-
- return EFI_SUCCESS;
-}
diff --git a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/Variable.h
b/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/Variable.h
deleted file mode 100644
index 2851582d0dc0..000000000000
--- a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/Variable.h
+++ /dev/null
@@ -1,277 +0,0 @@
-/** @file
-
- The internal header file includes the common header files, defines
- internal structure and functions used by EmuVariable module.
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD
License
-which accompanies this distribution. The full text of the license may be
found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#ifndef _VARIABLE_H_
-#define _VARIABLE_H_
-
-#include <Uefi.h>
-
-#include <Protocol/VariableWrite.h>
-#include <Protocol/Variable.h>
-
-#include <Library/BaseMemoryLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/DebugLib.h>
-#include <Library/UefiRuntimeLib.h>
-#include <Library/UefiDriverEntryPoint.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/UefiLib.h>
-#include <Library/BaseLib.h>
-#include <Library/PcdLib.h>
-#include <Library/HobLib.h>
-#include <Guid/VariableFormat.h>
-#include <Guid/GlobalVariable.h>
-
-#include <Guid/EventGroup.h>
-
-#define GET_VARIABLE_NAME_PTR(a) (CHAR16 *) ((UINTN) (a) + sizeof
(VARIABLE_HEADER))
-
-///
-/// The size of a 3 character ISO639 language code.
-///
-#define ISO_639_2_ENTRY_SIZE 3
-
-typedef enum {
- Physical,
- Virtual
-} VARIABLE_POINTER_TYPE;
-
-typedef struct {
- VARIABLE_HEADER *CurrPtr;
- VARIABLE_HEADER *EndPtr;
- VARIABLE_HEADER *StartPtr;
- BOOLEAN Volatile;
-} VARIABLE_POINTER_TRACK;
-
-typedef struct {
- EFI_PHYSICAL_ADDRESS VolatileVariableBase;
- EFI_PHYSICAL_ADDRESS NonVolatileVariableBase;
- EFI_LOCK VariableServicesLock;
-} VARIABLE_GLOBAL;
-
-typedef struct {
- VARIABLE_GLOBAL VariableGlobal[2];
- UINTN VolatileLastVariableOffset;
- UINTN NonVolatileLastVariableOffset;
- UINTN CommonVariableTotalSize;
- UINTN HwErrVariableTotalSize;
- CHAR8 *PlatformLangCodes;
- CHAR8 *LangCodes;
- CHAR8 *PlatformLang;
- CHAR8 Lang[ISO_639_2_ENTRY_SIZE + 1];
-} ESAL_VARIABLE_GLOBAL;
-
-///
-/// Don't use module globals after the SetVirtualAddress map is signaled
-///
-extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;
-
-/**
- Initializes variable store area for non-volatile and volatile variable.
-
- This function allocates and initializes memory space for global context of
ESAL
- variable service and variable store area for non-volatile and volatile
variable.
-
- @param ImageHandle The Image handle of this driver.
- @param SystemTable The pointer of EFI_SYSTEM_TABLE.
-
- @retval EFI_SUCCESS Function successfully executed.
- @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.
-
-**/
-EFI_STATUS
-EFIAPI
-VariableCommonInitialize (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- );
-
-/**
- Entry point of EmuVariable service module.
-
- This function is the entry point of EmuVariable service module.
- It registers all interfaces of Variable Services, initializes
- variable store for non-volatile and volatile variables, and registers
- notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
-
- @param ImageHandle The Image handle of this driver.
- @param SystemTable The pointer of EFI_SYSTEM_TABLE.
-
- @retval EFI_SUCCESS Variable service successfully initialized.
-
-**/
-EFI_STATUS
-EFIAPI
-VariableServiceInitialize (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- );
-
-/**
- Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.
-
- This is a notification function registered on
EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
- It convers pointer to new virtual address.
-
- @param Event Event whose notification function is being invoked.
- @param Context Pointer to the notification function's context.
-
-**/
-VOID
-EFIAPI
-VariableClassAddressChangeEvent (
- IN EFI_EVENT Event,
- IN VOID *Context
- );
-
-/**
- This code finds variable in storage blocks (Volatile or Non-Volatile).
-
- @param VariableName A Null-terminated Unicode string that is the
name of
- the vendor's variable.
- @param VendorGuid A unique identifier for the vendor.
- @param Attributes If not NULL, a pointer to the memory location
to return the
- attributes bitmask for the variable.
- @param DataSize Size of Data found. If size is less than the
- data, this value contains the required size.
- @param Data On input, the size in bytes of the return
Data buffer.
- On output, the size of data returned in Data.
- @param Global Pointer to VARIABLE_GLOBAL structure
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_NOT_FOUND The variable was not found.
- @retval EFI_BUFFER_TOO_SMALL DataSize is too small for the result.
DataSize has
- been updated with the size needed to complete
the request.
- @retval EFI_INVALID_PARAMETER VariableName or VendorGuid or DataSize is
NULL.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuGetVariable (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- OUT UINT32 *Attributes OPTIONAL,
- IN OUT UINTN *DataSize,
- OUT VOID *Data,
- IN VARIABLE_GLOBAL *Global
- );
-
-/**
-
- This code finds the next available variable.
-
- @param VariableNameSize The size of the VariableName buffer. The size
must be large enough to fit input
- string supplied in VariableName buffer.
- @param VariableName On input, supplies the last VariableName that
was returned by GetNextVariableName().
- On output, returns the Null-terminated
Unicode string of the current variable.
- @param VendorGuid On input, supplies the last VendorGuid that
was returned by GetNextVariableName().
- On output, returns the VendorGuid of the
current variable.
- @param Global Pointer to VARIABLE_GLOBAL structure.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_NOT_FOUND The next variable was not found.
- @retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the
result.
- VariableNameSize has been updated with the
size needed to complete the request.
- @retval EFI_INVALID_PARAMETER VariableNameSize or VariableName or
VendorGuid is NULL.
- @retval EFI_INVALID_PARAMETER The input values of VariableName and
VendorGuid are not a name and
- GUID of an existing variable.
- @retval EFI_INVALID_PARAMETER Null-terminator is not found in the first
VariableNameSize bytes of
- the input VariableName buffer.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuGetNextVariableName (
- IN OUT UINTN *VariableNameSize,
- IN OUT CHAR16 *VariableName,
- IN OUT EFI_GUID *VendorGuid,
- IN VARIABLE_GLOBAL *Global
- );
-
-/**
-
- This code sets variable in storage blocks (Volatile or Non-Volatile).
-
- @param VariableName A Null-terminated Unicode string that is the
name of the vendor's
- variable. Each VariableName is unique for
each
- VendorGuid. VariableName must contain 1 or
more
- Unicode characters. If VariableName is an
empty Unicode
- string, then EFI_INVALID_PARAMETER is
returned.
- @param VendorGuid A unique identifier for the vendor
- @param Attributes Attributes bitmask to set for the variable
- @param DataSize The size in bytes of the Data buffer. A size
of zero causes the
- variable to be deleted.
- @param Data The contents for the variable
- @param Global Pointer to VARIABLE_GLOBAL structure
- @param VolatileOffset The offset of last volatile variable
- @param NonVolatileOffset The offset of last non-volatile variable
-
- @retval EFI_SUCCESS The firmware has successfully stored the
variable and its data as
- defined by the Attributes.
- @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was
supplied, or the
- DataSize exceeds the maximum allowed, or
VariableName is an empty
- Unicode string, or VendorGuid is NULL.
- @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the
variable and its data.
- @retval EFI_DEVICE_ERROR The variable could not be saved due to a
hardware failure.
- @retval EFI_WRITE_PROTECTED The variable in question is read-only or
cannot be deleted.
- @retval EFI_NOT_FOUND The variable trying to be updated or deleted
was not found.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSetVariable (
- IN CHAR16 *VariableName,
- IN EFI_GUID *VendorGuid,
- IN UINT32 Attributes,
- IN UINTN DataSize,
- IN VOID *Data,
- IN VARIABLE_GLOBAL *Global,
- IN UINTN *VolatileOffset,
- IN UINTN *NonVolatileOffset
- );
-
-/**
-
- This code returns information about the EFI variables.
-
- @param Attributes Attributes bitmask to specify the type
of variables
- on which to return information.
- @param MaximumVariableStorageSize On output the maximum size of the
storage space available for
- the EFI variables associated with the
attributes specified.
- @param RemainingVariableStorageSize Returns the remaining size of the
storage space available for EFI
- variables associated with the
attributes specified.
- @param MaximumVariableSize Returns the maximum size of an
individual EFI variable
- associated with the attributes
specified.
- @param Global Pointer to VARIABLE_GLOBAL structure.
-
- @retval EFI_SUCCESS Valid answer returned.
- @retval EFI_INVALID_PARAMETER An invalid combination of attribute
bits was supplied
- @retval EFI_UNSUPPORTED The attribute is not supported on this
platform, and the
- MaximumVariableStorageSize,
RemainingVariableStorageSize,
- MaximumVariableSize are undefined.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuQueryVariableInfo (
- IN UINT32 Attributes,
- OUT UINT64 *MaximumVariableStorageSize,
- OUT UINT64 *RemainingVariableStorageSize,
- OUT UINT64 *MaximumVariableSize,
- IN VARIABLE_GLOBAL *Global
- );
-
-#endif
--
2.7.0.windows.1
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