diff options
Diffstat (limited to 'BraswellPlatformPkg/Common/Override/IntelFrameworkModulePkg/Library/GenericBdsLib/BdsMisc.c')
| -rw-r--r-- | BraswellPlatformPkg/Common/Override/IntelFrameworkModulePkg/Library/GenericBdsLib/BdsMisc.c | 1589 |
1 files changed, 1589 insertions, 0 deletions
diff --git a/BraswellPlatformPkg/Common/Override/IntelFrameworkModulePkg/Library/GenericBdsLib/BdsMisc.c b/BraswellPlatformPkg/Common/Override/IntelFrameworkModulePkg/Library/GenericBdsLib/BdsMisc.c new file mode 100644 index 0000000000..29854563f5 --- /dev/null +++ b/BraswellPlatformPkg/Common/Override/IntelFrameworkModulePkg/Library/GenericBdsLib/BdsMisc.c @@ -0,0 +1,1589 @@ +/** @file
+ Misc BDS library function
+
+Copyright (c) 2004 - 2015, 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 "InternalBdsLib.h"
+
+
+#define MAX_STRING_LEN 200
+
+BOOLEAN mFeaturerSwitch = TRUE;
+BOOLEAN mResetRequired = FALSE;
+
+extern UINT16 gPlatformBootTimeOutDefault;
+
+/**
+ The function will go through the driver option link list, load and start
+ every driver the driver option device path point to.
+
+ @param BdsDriverLists The header of the current driver option link list
+
+**/
+VOID
+EFIAPI
+BdsLibLoadDrivers (
+ IN LIST_ENTRY *BdsDriverLists
+ )
+{
+ EFI_STATUS Status;
+ LIST_ENTRY *Link;
+ BDS_COMMON_OPTION *Option;
+ EFI_HANDLE ImageHandle;
+ EFI_LOADED_IMAGE_PROTOCOL *ImageInfo;
+ UINTN ExitDataSize;
+ CHAR16 *ExitData;
+ BOOLEAN ReconnectAll;
+
+ ReconnectAll = FALSE;
+
+ //
+ // Process the driver option
+ //
+ for (Link = BdsDriverLists->ForwardLink; Link != BdsDriverLists; Link = Link->ForwardLink) {
+ Option = CR (Link, BDS_COMMON_OPTION, Link, BDS_LOAD_OPTION_SIGNATURE);
+
+ //
+ // If a load option is not marked as LOAD_OPTION_ACTIVE,
+ // the boot manager will not automatically load the option.
+ //
+ if (!IS_LOAD_OPTION_TYPE (Option->Attribute, LOAD_OPTION_ACTIVE)) {
+ continue;
+ }
+
+ //
+ // If a driver load option is marked as LOAD_OPTION_FORCE_RECONNECT,
+ // then all of the EFI drivers in the system will be disconnected and
+ // reconnected after the last driver load option is processed.
+ //
+ if (IS_LOAD_OPTION_TYPE (Option->Attribute, LOAD_OPTION_FORCE_RECONNECT)) {
+ ReconnectAll = TRUE;
+ }
+
+ //
+ // Make sure the driver path is connected.
+ //
+ BdsLibConnectDevicePath (Option->DevicePath);
+
+ //
+ // Load and start the image that Driver#### describes
+ //
+ Status = gBS->LoadImage (
+ FALSE,
+ gImageHandle,
+ Option->DevicePath,
+ NULL,
+ 0,
+ &ImageHandle
+ );
+
+ if (!EFI_ERROR (Status)) {
+ gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **) &ImageInfo);
+
+ //
+ // Verify whether this image is a driver, if not,
+ // exit it and continue to parse next load option
+ //
+ if (ImageInfo->ImageCodeType != EfiBootServicesCode && ImageInfo->ImageCodeType != EfiRuntimeServicesCode) {
+ gBS->Exit (ImageHandle, EFI_INVALID_PARAMETER, 0, NULL);
+ continue;
+ }
+
+ if (Option->LoadOptionsSize != 0) {
+ ImageInfo->LoadOptionsSize = Option->LoadOptionsSize;
+ ImageInfo->LoadOptions = Option->LoadOptions;
+ }
+ //
+ // Before calling the image, enable the Watchdog Timer for
+ // the 5 Minute period
+ //
+ gBS->SetWatchdogTimer (5 * 60, 0x0000, 0x00, NULL);
+
+ Status = gBS->StartImage (ImageHandle, &ExitDataSize, &ExitData);
+ DEBUG ((DEBUG_INFO | DEBUG_LOAD, "Driver Return Status = %r\n", Status));
+
+ //
+ // Clear the Watchdog Timer after the image returns
+ //
+ gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL);
+ }
+ }
+
+ //
+ // Process the LOAD_OPTION_FORCE_RECONNECT driver option
+ //
+ if (ReconnectAll) {
+ BdsLibDisconnectAllEfi ();
+ BdsLibConnectAll ();
+ }
+
+}
+
+/**
+ Get the Option Number that does not used.
+ Try to locate the specific option variable one by one utile find a free number.
+
+ @param VariableName Indicate if the boot#### or driver#### option
+
+ @return The Minimal Free Option Number
+
+**/
+UINT16
+BdsLibGetFreeOptionNumber (
+ IN CHAR16 *VariableName
+ )
+{
+ UINTN Index;
+ CHAR16 StrTemp[10];
+ UINT16 *OptionBuffer;
+ UINTN OptionSize;
+
+ //
+ // Try to find the minimum free number from 0, 1, 2, 3....
+ //
+ Index = 0;
+ do {
+ if (*VariableName == 'B') {
+ UnicodeSPrint (StrTemp, sizeof (StrTemp), L"Boot%04x", Index);
+ } else {
+ UnicodeSPrint (StrTemp, sizeof (StrTemp), L"Driver%04x", Index);
+ }
+ //
+ // try if the option number is used
+ //
+ OptionBuffer = BdsLibGetVariableAndSize (
+ StrTemp,
+ &gEfiGlobalVariableGuid,
+ &OptionSize
+ );
+ if (OptionBuffer == NULL) {
+ break;
+ }
+ FreePool(OptionBuffer);
+ Index++;
+ } while (TRUE);
+
+ return ((UINT16) Index);
+}
+
+
+/**
+ This function will register the new boot#### or driver#### option base on
+ the VariableName. The new registered boot#### or driver#### will be linked
+ to BdsOptionList and also update to the VariableName. After the boot#### or
+ driver#### updated, the BootOrder or DriverOrder will also be updated.
+
+ @param BdsOptionList The header of the boot#### or driver#### link list
+ @param DevicePath The device path which the boot#### or driver####
+ option present
+ @param String The description of the boot#### or driver####
+ @param VariableName Indicate if the boot#### or driver#### option
+
+ @retval EFI_SUCCESS The boot#### or driver#### have been success
+ registered
+ @retval EFI_STATUS Return the status of gRT->SetVariable ().
+
+**/
+EFI_STATUS
+EFIAPI
+BdsLibRegisterNewOption (
+ IN LIST_ENTRY *BdsOptionList,
+ IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
+ IN CHAR16 *String,
+ IN CHAR16 *VariableName
+ )
+{
+ EFI_STATUS Status;
+ UINTN Index;
+ UINT16 RegisterOptionNumber;
+ UINT16 *TempOptionPtr;
+ UINTN TempOptionSize;
+ UINT16 *OptionOrderPtr;
+ VOID *OptionPtr;
+ UINTN OptionSize;
+ UINT8 *TempPtr;
+ EFI_DEVICE_PATH_PROTOCOL *OptionDevicePath;
+ CHAR16 *Description;
+ CHAR16 OptionName[10];
+ BOOLEAN UpdateDescription;
+ UINT16 BootOrderEntry;
+ UINTN OrderItemNum;
+
+ if (DevicePath == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ OptionPtr = NULL;
+ OptionSize = 0;
+ TempPtr = NULL;
+ OptionDevicePath = NULL;
+ Description = NULL;
+ OptionOrderPtr = NULL;
+ UpdateDescription = FALSE;
+ Status = EFI_SUCCESS;
+ ZeroMem (OptionName, sizeof (OptionName));
+
+ TempOptionSize = 0;
+ TempOptionPtr = BdsLibGetVariableAndSize (
+ VariableName,
+ &gEfiGlobalVariableGuid,
+ &TempOptionSize
+ );
+ //
+ // Compare with current option variable if the previous option is set in global variable.
+ //
+ for (Index = 0; Index < TempOptionSize / sizeof (UINT16); Index++) {
+ //
+ // TempOptionPtr must not be NULL if we have non-zero TempOptionSize.
+ //
+ ASSERT (TempOptionPtr != NULL);
+
+ if (*VariableName == 'B') {
+ UnicodeSPrint (OptionName, sizeof (OptionName), L"Boot%04x", TempOptionPtr[Index]);
+ } else {
+ UnicodeSPrint (OptionName, sizeof (OptionName), L"Driver%04x", TempOptionPtr[Index]);
+ }
+
+ OptionPtr = BdsLibGetVariableAndSize (
+ OptionName,
+ &gEfiGlobalVariableGuid,
+ &OptionSize
+ );
+ if (OptionPtr == NULL) {
+ continue;
+ }
+
+ //
+ // Validate the variable.
+ //
+ if (!ValidateOption(OptionPtr, OptionSize)) {
+ FreePool(OptionPtr);
+ continue;
+ }
+
+ TempPtr = OptionPtr;
+ TempPtr += sizeof (UINT32) + sizeof (UINT16);
+ Description = (CHAR16 *) TempPtr;
+ TempPtr += StrSize ((CHAR16 *) TempPtr);
+ OptionDevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr;
+
+ //
+ // Notes: the description may will change base on the GetStringToken
+ //
+ if (CompareMem (OptionDevicePath, DevicePath, GetDevicePathSize (OptionDevicePath)) == 0) {
+ if (CompareMem (Description, String, StrSize (Description)) == 0) {
+ //
+ // Got the option, so just return
+ //
+ FreePool (OptionPtr);
+ FreePool (TempOptionPtr);
+ return EFI_SUCCESS;
+ } else {
+ //
+ // Option description changed, need update.
+ //
+ UpdateDescription = TRUE;
+ FreePool (OptionPtr);
+ break;
+ }
+ }
+
+ FreePool (OptionPtr);
+ }
+
+ OptionSize = sizeof (UINT32) + sizeof (UINT16) + StrSize (String);
+ OptionSize += GetDevicePathSize (DevicePath);
+ OptionPtr = AllocateZeroPool (OptionSize);
+ ASSERT (OptionPtr != NULL);
+
+ TempPtr = OptionPtr;
+ *(UINT32 *) TempPtr = LOAD_OPTION_ACTIVE;
+ TempPtr += sizeof (UINT32);
+ *(UINT16 *) TempPtr = (UINT16) GetDevicePathSize (DevicePath);
+ TempPtr += sizeof (UINT16);
+ CopyMem (TempPtr, String, StrSize (String));
+ TempPtr += StrSize (String);
+ CopyMem (TempPtr, DevicePath, GetDevicePathSize (DevicePath));
+
+ if (UpdateDescription) {
+ //
+ // The number in option#### to be updated.
+ // In this case, we must have non-NULL TempOptionPtr.
+ //
+ ASSERT (TempOptionPtr != NULL);
+ RegisterOptionNumber = TempOptionPtr[Index];
+ } else {
+ //
+ // The new option#### number
+ //
+ RegisterOptionNumber = BdsLibGetFreeOptionNumber(VariableName);
+ }
+
+ if (*VariableName == 'B') {
+ UnicodeSPrint (OptionName, sizeof (OptionName), L"Boot%04x", RegisterOptionNumber);
+ } else {
+ UnicodeSPrint (OptionName, sizeof (OptionName), L"Driver%04x", RegisterOptionNumber);
+ }
+
+ Status = gRT->SetVariable (
+ OptionName,
+ &gEfiGlobalVariableGuid,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
+ OptionSize,
+ OptionPtr
+ );
+ //
+ // Return if only need to update a changed description or fail to set option.
+ //
+ if (EFI_ERROR (Status) || UpdateDescription) {
+ FreePool (OptionPtr);
+ if (TempOptionPtr != NULL) {
+ FreePool (TempOptionPtr);
+ }
+ return Status;
+ }
+
+ FreePool (OptionPtr);
+
+ //
+ // Update the option order variable
+ //
+
+ //
+ // If no option order
+ //
+ if (TempOptionSize == 0) {
+ BootOrderEntry = 0;
+ Status = gRT->SetVariable (
+ VariableName,
+ &gEfiGlobalVariableGuid,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
+ sizeof (UINT16),
+ &BootOrderEntry
+ );
+ if (TempOptionPtr != NULL) {
+ FreePool (TempOptionPtr);
+ }
+ return Status;
+ }
+
+ //
+ // TempOptionPtr must not be NULL if TempOptionSize is not zero.
+ //
+ ASSERT (TempOptionPtr != NULL);
+ //
+ // Append the new option number to the original option order
+ //
+ OrderItemNum = (TempOptionSize / sizeof (UINT16)) + 1 ;
+ OptionOrderPtr = AllocateZeroPool ( OrderItemNum * sizeof (UINT16));
+ ASSERT (OptionOrderPtr!= NULL);
+ CopyMem (OptionOrderPtr, TempOptionPtr, (OrderItemNum - 1) * sizeof (UINT16));
+
+ OptionOrderPtr[Index] = RegisterOptionNumber;
+
+ Status = gRT->SetVariable (
+ VariableName,
+ &gEfiGlobalVariableGuid,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
+ OrderItemNum * sizeof (UINT16),
+ OptionOrderPtr
+ );
+ FreePool (TempOptionPtr);
+ FreePool (OptionOrderPtr);
+
+ return Status;
+}
+
+/**
+ Returns the size of a device path in bytes.
+
+ This function returns the size, in bytes, of the device path data structure
+ specified by DevicePath including the end of device path node. If DevicePath
+ is NULL, then 0 is returned. If the length of the device path is bigger than
+ MaxSize, also return 0 to indicate this is an invalidate device path.
+
+ @param DevicePath A pointer to a device path data structure.
+ @param MaxSize Max valid device path size. If big than this size,
+ return error.
+
+ @retval 0 An invalid device path.
+ @retval Others The size of a device path in bytes.
+
+**/
+UINTN
+GetDevicePathSizeEx (
+ IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
+ IN UINTN MaxSize
+ )
+{
+ UINTN Size;
+ UINTN NodeSize;
+
+ if (DevicePath == NULL) {
+ return 0;
+ }
+
+ //
+ // Search for the end of the device path structure
+ //
+ Size = 0;
+ while (!IsDevicePathEnd (DevicePath)) {
+ NodeSize = DevicePathNodeLength (DevicePath);
+ if (NodeSize < END_DEVICE_PATH_LENGTH) {
+ return 0;
+ }
+ Size += NodeSize;
+ if (Size > MaxSize) {
+ return 0;
+ }
+ DevicePath = NextDevicePathNode (DevicePath);
+ }
+ Size += DevicePathNodeLength (DevicePath);
+ if (Size > MaxSize) {
+ return 0;
+ }
+
+ return Size;
+}
+
+/**
+ Returns the length of a Null-terminated Unicode string. If the length is
+ bigger than MaxStringLen, return length 0 to indicate that this is an
+ invalidate string.
+
+ This function returns the byte length of Unicode characters in the Null-terminated
+ Unicode string specified by String.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned on a 16-bit boundary, then ASSERT().
+
+ @param String A pointer to a Null-terminated Unicode string.
+ @param MaxStringLen Max string len in this string.
+
+ @retval 0 An invalid string.
+ @retval Others The length of String.
+
+**/
+UINTN
+StrSizeEx (
+ IN CONST CHAR16 *String,
+ IN UINTN MaxStringLen
+ )
+{
+ UINTN Length;
+
+ ASSERT (String != NULL && MaxStringLen != 0);
+ ASSERT (((UINTN) String & BIT0) == 0);
+
+ for (Length = 0; *String != L'\0' && MaxStringLen != Length; String++, Length+=2);
+
+ if (*String != L'\0' && MaxStringLen == Length) {
+ return 0;
+ }
+
+ return Length + 2;
+}
+
+/**
+ Validate the EFI Boot#### variable (VendorGuid/Name)
+
+ @param Variable Boot#### variable data.
+ @param VariableSize Returns the size of the EFI variable that was read
+
+ @retval TRUE The variable data is correct.
+ @retval FALSE The variable data is corrupted.
+
+**/
+BOOLEAN
+ValidateOption (
+ UINT8 *Variable,
+ UINTN VariableSize
+ )
+{
+ UINT16 FilePathSize;
+ UINT8 *TempPtr;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ UINTN TempSize;
+
+ if (VariableSize <= sizeof (UINT16) + sizeof (UINT32)) {
+ return FALSE;
+ }
+
+ //
+ // Skip the option attribute
+ //
+ TempPtr = Variable;
+ TempPtr += sizeof (UINT32);
+
+ //
+ // Get the option's device path size
+ //
+ FilePathSize = *(UINT16 *) TempPtr;
+ TempPtr += sizeof (UINT16);
+
+ //
+ // Get the option's description string size
+ //
+ TempSize = StrSizeEx ((CHAR16 *) TempPtr, VariableSize - sizeof (UINT16) - sizeof (UINT32));
+ TempPtr += TempSize;
+
+ //
+ // Get the option's device path
+ //
+ DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr;
+ TempPtr += FilePathSize;
+
+ //
+ // Validation boot option variable.
+ //
+ if ((FilePathSize == 0) || (TempSize == 0)) {
+ return FALSE;
+ }
+
+ if (TempSize + FilePathSize + sizeof (UINT16) + sizeof (UINT32) > VariableSize) {
+ return FALSE;
+ }
+
+ return (BOOLEAN) (GetDevicePathSizeEx (DevicePath, FilePathSize) != 0);
+}
+
+/**
+ Convert a single character to number.
+ It assumes the input Char is in the scope of L'0' ~ L'9' and L'A' ~ L'F'
+
+ @param Char The input char which need to change to a hex number.
+
+**/
+UINTN
+CharToUint (
+ IN CHAR16 Char
+ )
+{
+ if ((Char >= L'0') && (Char <= L'9')) {
+ return (UINTN) (Char - L'0');
+ }
+
+ if ((Char >= L'A') && (Char <= L'F')) {
+ return (UINTN) (Char - L'A' + 0xA);
+ }
+
+ ASSERT (FALSE);
+ return 0;
+}
+
+/**
+ Build the boot#### or driver#### option from the VariableName, the
+ build boot#### or driver#### will also be linked to BdsCommonOptionList.
+
+ @param BdsCommonOptionList The header of the boot#### or driver#### option
+ link list
+ @param VariableName EFI Variable name indicate if it is boot#### or
+ driver####
+
+ @retval BDS_COMMON_OPTION Get the option just been created
+ @retval NULL Failed to get the new option
+
+**/
+BDS_COMMON_OPTION *
+EFIAPI
+BdsLibVariableToOption (
+ IN OUT LIST_ENTRY *BdsCommonOptionList,
+ IN CHAR16 *VariableName
+ )
+{
+ UINT32 Attribute;
+ UINT16 FilePathSize;
+ UINT8 *Variable;
+ UINT8 *TempPtr;
+ UINTN VariableSize;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ BDS_COMMON_OPTION *Option;
+ VOID *LoadOptions;
+ UINT32 LoadOptionsSize;
+ CHAR16 *Description;
+ UINT8 NumOff;
+
+ //
+ // Read the variable. We will never free this data.
+ //
+ Variable = BdsLibGetVariableAndSize (
+ VariableName,
+ &gEfiGlobalVariableGuid,
+ &VariableSize
+ );
+ if (Variable == NULL) {
+ return NULL;
+ }
+
+ //
+ // Validate Boot#### variable data.
+ //
+ if (!ValidateOption(Variable, VariableSize)) {
+ FreePool (Variable);
+ return NULL;
+ }
+
+ //
+ // Notes: careful defined the variable of Boot#### or
+ // Driver####, consider use some macro to abstract the code
+ //
+ //
+ // Get the option attribute
+ //
+ TempPtr = Variable;
+ Attribute = *(UINT32 *) Variable;
+ TempPtr += sizeof (UINT32);
+
+ //
+ // Get the option's device path size
+ //
+ FilePathSize = *(UINT16 *) TempPtr;
+ TempPtr += sizeof (UINT16);
+
+ //
+ // Get the option's description string
+ //
+ Description = (CHAR16 *) TempPtr;
+
+ //
+ // Get the option's description string size
+ //
+ TempPtr += StrSize((CHAR16 *) TempPtr);
+
+ //
+ // Get the option's device path
+ //
+ DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr;
+ TempPtr += FilePathSize;
+
+ //
+ // Get load opion data.
+ //
+ LoadOptions = TempPtr;
+ LoadOptionsSize = (UINT32) (VariableSize - (UINTN) (TempPtr - Variable));
+
+ //
+ // The Console variables may have multiple device paths, so make
+ // an Entry for each one.
+ //
+ Option = AllocateZeroPool (sizeof (BDS_COMMON_OPTION));
+ if (Option == NULL) {
+ FreePool (Variable);
+ return NULL;
+ }
+
+ Option->Signature = BDS_LOAD_OPTION_SIGNATURE;
+ Option->DevicePath = AllocateZeroPool (GetDevicePathSize (DevicePath));
+ ASSERT(Option->DevicePath != NULL);
+ CopyMem (Option->DevicePath, DevicePath, GetDevicePathSize (DevicePath));
+
+ Option->Attribute = Attribute;
+ Option->Description = AllocateZeroPool (StrSize (Description));
+ ASSERT(Option->Description != NULL);
+ CopyMem (Option->Description, Description, StrSize (Description));
+
+ Option->LoadOptions = AllocateZeroPool (LoadOptionsSize);
+ ASSERT(Option->LoadOptions != NULL);
+ CopyMem (Option->LoadOptions, LoadOptions, LoadOptionsSize);
+ Option->LoadOptionsSize = LoadOptionsSize;
+
+ //
+ // Get the value from VariableName Unicode string
+ // since the ISO standard assumes ASCII equivalent abbreviations, we can be safe in converting this
+ // Unicode stream to ASCII without any loss in meaning.
+ //
+ if (*VariableName == 'B') {
+ NumOff = (UINT8) (sizeof (L"Boot") / sizeof (CHAR16) - 1);
+ Option->BootCurrent = (UINT16) (CharToUint (VariableName[NumOff+0]) * 0x1000)
+ + (UINT16) (CharToUint (VariableName[NumOff+1]) * 0x100)
+ + (UINT16) (CharToUint (VariableName[NumOff+2]) * 0x10)
+ + (UINT16) (CharToUint (VariableName[NumOff+3]) * 0x1);
+ }
+ InsertTailList (BdsCommonOptionList, &Option->Link);
+ FreePool (Variable);
+ return Option;
+}
+
+/**
+ Process BootOrder, or DriverOrder variables, by calling
+ BdsLibVariableToOption () for each UINT16 in the variables.
+
+ @param BdsCommonOptionList The header of the option list base on variable
+ VariableName
+ @param VariableName EFI Variable name indicate the BootOrder or
+ DriverOrder
+
+ @retval EFI_SUCCESS Success create the boot option or driver option
+ list
+ @retval EFI_OUT_OF_RESOURCES Failed to get the boot option or driver option list
+
+**/
+EFI_STATUS
+EFIAPI
+BdsLibBuildOptionFromVar (
+ IN LIST_ENTRY *BdsCommonOptionList,
+ IN CHAR16 *VariableName
+ )
+{
+ UINT16 *OptionOrder;
+ UINTN OptionOrderSize;
+ UINTN Index;
+ BDS_COMMON_OPTION *Option;
+ CHAR16 OptionName[20];
+
+ //
+ // Zero Buffer in order to get all BOOT#### variables
+ //
+ ZeroMem (OptionName, sizeof (OptionName));
+
+ //
+ // Read the BootOrder, or DriverOrder variable.
+ //
+ OptionOrder = BdsLibGetVariableAndSize (
+ VariableName,
+ &gEfiGlobalVariableGuid,
+ &OptionOrderSize
+ );
+ if (OptionOrder == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ for (Index = 0; Index < OptionOrderSize / sizeof (UINT16); Index++) {
+ if (*VariableName == 'B') {
+ UnicodeSPrint (OptionName, sizeof (OptionName), L"Boot%04x", OptionOrder[Index]);
+ } else {
+ UnicodeSPrint (OptionName, sizeof (OptionName), L"Driver%04x", OptionOrder[Index]);
+ }
+
+ Option = BdsLibVariableToOption (BdsCommonOptionList, OptionName);
+ if (Option != NULL) {
+ Option->BootCurrent = OptionOrder[Index];
+ }
+ }
+
+ FreePool (OptionOrder);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Get boot mode by looking up configuration table and parsing HOB list
+
+ @param BootMode Boot mode from PEI handoff HOB.
+
+ @retval EFI_SUCCESS Successfully get boot mode
+
+**/
+EFI_STATUS
+EFIAPI
+BdsLibGetBootMode (
+ OUT EFI_BOOT_MODE *BootMode
+ )
+{
+ *BootMode = GetBootModeHob ();
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Read the EFI variable (VendorGuid/Name) and return a dynamically allocated
+ buffer, and the size of the buffer. If failure return NULL.
+
+ @param Name String part of EFI variable name
+ @param VendorGuid GUID part of EFI variable name
+ @param VariableSize Returns the size of the EFI variable that was read
+
+ @return Dynamically allocated memory that contains a copy of the EFI variable
+ Caller is responsible freeing the buffer.
+ @retval NULL Variable was not read
+
+**/
+VOID *
+EFIAPI
+BdsLibGetVariableAndSize (
+ IN CHAR16 *Name,
+ IN EFI_GUID *VendorGuid,
+ OUT UINTN *VariableSize
+ )
+{
+ EFI_STATUS Status;
+ UINTN BufferSize;
+ VOID *Buffer;
+
+ Buffer = NULL;
+
+ //
+ // Pass in a zero size buffer to find the required buffer size.
+ //
+ BufferSize = 0;
+ Status = gRT->GetVariable (Name, VendorGuid, NULL, &BufferSize, Buffer);
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ //
+ // Allocate the buffer to return
+ //
+ Buffer = AllocateZeroPool (BufferSize);
+ if (Buffer == NULL) {
+ *VariableSize = 0;
+ return NULL;
+ }
+ //
+ // Read variable into the allocated buffer.
+ //
+ Status = gRT->GetVariable (Name, VendorGuid, NULL, &BufferSize, Buffer);
+ if (EFI_ERROR (Status)) {
+ FreePool (Buffer);
+ BufferSize = 0;
+ Buffer = NULL;
+ }
+ }
+
+ ASSERT (((Buffer == NULL) && (BufferSize == 0)) ||
+ ((Buffer != NULL) && (BufferSize != 0))
+ );
+ *VariableSize = BufferSize;
+ return Buffer;
+}
+
+/**
+ Delete the instance in Multi which matches partly with Single instance
+
+ @param Multi A pointer to a multi-instance device path data
+ structure.
+ @param Single A pointer to a single-instance device path data
+ structure.
+
+ @return This function will remove the device path instances in Multi which partly
+ match with the Single, and return the result device path. If there is no
+ remaining device path as a result, this function will return NULL.
+
+**/
+EFI_DEVICE_PATH_PROTOCOL *
+EFIAPI
+BdsLibDelPartMatchInstance (
+ IN EFI_DEVICE_PATH_PROTOCOL *Multi,
+ IN EFI_DEVICE_PATH_PROTOCOL *Single
+ )
+{
+ EFI_DEVICE_PATH_PROTOCOL *Instance;
+ EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *TempNewDevicePath;
+ UINTN InstanceSize;
+ UINTN SingleDpSize;
+ UINTN Size;
+
+ NewDevicePath = NULL;
+ TempNewDevicePath = NULL;
+
+ if (Multi == NULL || Single == NULL) {
+ return Multi;
+ }
+
+ Instance = GetNextDevicePathInstance (&Multi, &InstanceSize);
+ SingleDpSize = GetDevicePathSize (Single) - END_DEVICE_PATH_LENGTH;
+ InstanceSize -= END_DEVICE_PATH_LENGTH;
+
+ while (Instance != NULL) {
+
+ Size = (SingleDpSize < InstanceSize) ? SingleDpSize : InstanceSize;
+
+ if ((CompareMem (Instance, Single, Size) != 0)) {
+ //
+ // Append the device path instance which does not match with Single
+ //
+ TempNewDevicePath = NewDevicePath;
+ NewDevicePath = AppendDevicePathInstance (NewDevicePath, Instance);
+ if (TempNewDevicePath != NULL) {
+ FreePool(TempNewDevicePath);
+ }
+ }
+ FreePool(Instance);
+ Instance = GetNextDevicePathInstance (&Multi, &InstanceSize);
+ InstanceSize -= END_DEVICE_PATH_LENGTH;
+ }
+
+ return NewDevicePath;
+}
+
+/**
+ Function compares a device path data structure to that of all the nodes of a
+ second device path instance.
+
+ @param Multi A pointer to a multi-instance device path data
+ structure.
+ @param Single A pointer to a single-instance device path data
+ structure.
+
+ @retval TRUE If the Single device path is contained within Multi device path.
+ @retval FALSE The Single device path is not match within Multi device path.
+
+**/
+BOOLEAN
+EFIAPI
+BdsLibMatchDevicePaths (
+ IN EFI_DEVICE_PATH_PROTOCOL *Multi,
+ IN EFI_DEVICE_PATH_PROTOCOL *Single
+ )
+{
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePathInst;
+ UINTN Size;
+
+ if (Multi == NULL || Single == NULL) {
+ return FALSE;
+ }
+
+ DevicePath = Multi;
+ DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);
+
+ //
+ // Search for the match of 'Single' in 'Multi'
+ //
+ while (DevicePathInst != NULL) {
+ //
+ // If the single device path is found in multiple device paths,
+ // return success
+ //
+ if (CompareMem (Single, DevicePathInst, Size) == 0) {
+ FreePool (DevicePathInst);
+ return TRUE;
+ }
+
+ FreePool (DevicePathInst);
+ DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);
+ }
+
+ return FALSE;
+}
+
+/**
+ This function prints a series of strings.
+
+ @param ConOut Pointer to EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL
+ @param ... A variable argument list containing series of
+ strings, the last string must be NULL.
+
+ @retval EFI_SUCCESS Success print out the string using ConOut.
+ @retval EFI_STATUS Return the status of the ConOut->OutputString ().
+
+**/
+EFI_STATUS
+EFIAPI
+BdsLibOutputStrings (
+ IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *ConOut,
+ ...
+ )
+{
+ VA_LIST Args;
+ EFI_STATUS Status;
+ CHAR16 *String;
+
+ Status = EFI_SUCCESS;
+ VA_START (Args, ConOut);
+
+ while (!EFI_ERROR (Status)) {
+ //
+ // If String is NULL, then it's the end of the list
+ //
+ String = VA_ARG (Args, CHAR16 *);
+ if (String == NULL) {
+ break;
+ }
+
+ Status = ConOut->OutputString (ConOut, String);
+
+ if (EFI_ERROR (Status)) {
+ break;
+ }
+ }
+
+ VA_END(Args);
+ return Status;
+}
+
+//
+// Following are BDS Lib functions which contain all the code about setup browser reset reminder feature.
+// Setup Browser reset reminder feature is that an reset reminder will be given before user leaves the setup browser if
+// user change any option setting which needs a reset to be effective, and the reset will be applied according to the user selection.
+//
+
+
+/**
+ Enable the setup browser reset reminder feature.
+ This routine is used in platform tip. If the platform policy need the feature, use the routine to enable it.
+
+**/
+VOID
+EFIAPI
+EnableResetReminderFeature (
+ VOID
+ )
+{
+ mFeaturerSwitch = TRUE;
+}
+
+
+/**
+ Disable the setup browser reset reminder feature.
+ This routine is used in platform tip. If the platform policy do not want the feature, use the routine to disable it.
+
+**/
+VOID
+EFIAPI
+DisableResetReminderFeature (
+ VOID
+ )
+{
+ mFeaturerSwitch = FALSE;
+}
+
+
+/**
+ Record the info that a reset is required.
+ A module boolean variable is used to record whether a reset is required.
+
+**/
+VOID
+EFIAPI
+EnableResetRequired (
+ VOID
+ )
+{
+ mResetRequired = TRUE;
+}
+
+
+/**
+ Record the info that no reset is required.
+ A module boolean variable is used to record whether a reset is required.
+
+**/
+VOID
+EFIAPI
+DisableResetRequired (
+ VOID
+ )
+{
+ mResetRequired = FALSE;
+}
+
+
+/**
+ Check whether platform policy enable the reset reminder feature. The default is enabled.
+
+**/
+BOOLEAN
+EFIAPI
+IsResetReminderFeatureEnable (
+ VOID
+ )
+{
+ return mFeaturerSwitch;
+}
+
+
+/**
+ Check if user changed any option setting which needs a system reset to be effective.
+
+**/
+BOOLEAN
+EFIAPI
+IsResetRequired (
+ VOID
+ )
+{
+ return mResetRequired;
+}
+
+
+/**
+ Check whether a reset is needed, and finish the reset reminder feature.
+ If a reset is needed, Popup a menu to notice user, and finish the feature
+ according to the user selection.
+
+**/
+VOID
+EFIAPI
+SetupResetReminder (
+ VOID
+ )
+{
+ EFI_INPUT_KEY Key;
+ CHAR16 *StringBuffer1;
+ CHAR16 *StringBuffer2;
+
+
+ //
+ //check any reset required change is applied? if yes, reset system
+ //
+ if (IsResetReminderFeatureEnable ()) {
+ if (IsResetRequired ()) {
+
+ StringBuffer1 = AllocateZeroPool (MAX_STRING_LEN * sizeof (CHAR16));
+ ASSERT (StringBuffer1 != NULL);
+ StringBuffer2 = AllocateZeroPool (MAX_STRING_LEN * sizeof (CHAR16));
+ ASSERT (StringBuffer2 != NULL);
+ StrCpyS (
+ StringBuffer1,
+ MAX_STRING_LEN,
+ L"Configuration changed. Reset to apply it Now."
+ );
+ StrCpyS (
+ StringBuffer2,
+ MAX_STRING_LEN,
+ L"Press ENTER to reset"
+ );
+ //
+ // Popup a menu to notice user
+ //
+ do {
+ CreatePopUp (EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE, &Key, StringBuffer1, StringBuffer2, NULL);
+ } while (Key.UnicodeChar != CHAR_CARRIAGE_RETURN);
+
+ FreePool (StringBuffer1);
+ FreePool (StringBuffer2);
+
+ gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);
+ }
+ }
+}
+
+/**
+ Get the headers (dos, image, optional header) from an image
+
+ @param Device SimpleFileSystem device handle
+ @param FileName File name for the image
+ @param DosHeader Pointer to dos header
+ @param Hdr The buffer in which to return the PE32, PE32+, or TE header.
+
+ @retval EFI_SUCCESS Successfully get the machine type.
+ @retval EFI_NOT_FOUND The file is not found.
+ @retval EFI_LOAD_ERROR File is not a valid image file.
+
+**/
+EFI_STATUS
+EFIAPI
+BdsLibGetImageHeader (
+ IN EFI_HANDLE Device,
+ IN CHAR16 *FileName,
+ OUT EFI_IMAGE_DOS_HEADER *DosHeader,
+ OUT EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
+ )
+{
+ EFI_STATUS Status;
+ EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Volume;
+ EFI_FILE_HANDLE Root;
+ EFI_FILE_HANDLE ThisFile;
+ UINTN BufferSize;
+ UINT64 FileSize;
+ EFI_FILE_INFO *Info;
+
+ Root = NULL;
+ ThisFile = NULL;
+ //
+ // Handle the file system interface to the device
+ //
+ Status = gBS->HandleProtocol (
+ Device,
+ &gEfiSimpleFileSystemProtocolGuid,
+ (VOID *) &Volume
+ );
+ if (EFI_ERROR (Status)) {
+ goto Done;
+ }
+
+ Status = Volume->OpenVolume (
+ Volume,
+ &Root
+ );
+ if (EFI_ERROR (Status)) {
+ Root = NULL;
+ goto Done;
+ }
+ ASSERT (Root != NULL);
+ Status = Root->Open (Root, &ThisFile, FileName, EFI_FILE_MODE_READ, 0);
+ if (EFI_ERROR (Status)) {
+ goto Done;
+ }
+ ASSERT (ThisFile != NULL);
+
+ //
+ // Get file size
+ //
+ BufferSize = SIZE_OF_EFI_FILE_INFO + 200;
+ do {
+ Info = NULL;
+ Status = gBS->AllocatePool (EfiBootServicesData, BufferSize, (VOID **) &Info);
+ if (EFI_ERROR (Status)) {
+ goto Done;
+ }
+ Status = ThisFile->GetInfo (
+ ThisFile,
+ &gEfiFileInfoGuid,
+ &BufferSize,
+ Info
+ );
+ if (!EFI_ERROR (Status)) {
+ break;
+ }
+ if (Status != EFI_BUFFER_TOO_SMALL) {
+ FreePool (Info);
+ goto Done;
+ }
+ FreePool (Info);
+ } while (TRUE);
+
+ FileSize = Info->FileSize;
+ FreePool (Info);
+
+ //
+ // Read dos header
+ //
+ BufferSize = sizeof (EFI_IMAGE_DOS_HEADER);
+ Status = ThisFile->Read (ThisFile, &BufferSize, DosHeader);
+ if (EFI_ERROR (Status) ||
+ BufferSize < sizeof (EFI_IMAGE_DOS_HEADER) ||
+ FileSize <= DosHeader->e_lfanew ||
+ DosHeader->e_magic != EFI_IMAGE_DOS_SIGNATURE) {
+ Status = EFI_LOAD_ERROR;
+ goto Done;
+ }
+
+ //
+ // Move to PE signature
+ //
+ Status = ThisFile->SetPosition (ThisFile, DosHeader->e_lfanew);
+ if (EFI_ERROR (Status)) {
+ Status = EFI_LOAD_ERROR;
+ goto Done;
+ }
+
+ //
+ // Read and check PE signature
+ //
+ BufferSize = sizeof (EFI_IMAGE_OPTIONAL_HEADER_UNION);
+ Status = ThisFile->Read (ThisFile, &BufferSize, Hdr.Pe32);
+ if (EFI_ERROR (Status) ||
+ BufferSize < sizeof (EFI_IMAGE_OPTIONAL_HEADER_UNION) ||
+ Hdr.Pe32->Signature != EFI_IMAGE_NT_SIGNATURE) {
+ Status = EFI_LOAD_ERROR;
+ goto Done;
+ }
+
+ //
+ // Check PE32 or PE32+ magic
+ //
+ if (Hdr.Pe32->OptionalHeader.Magic != EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC &&
+ Hdr.Pe32->OptionalHeader.Magic != EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
+ Status = EFI_LOAD_ERROR;
+ goto Done;
+ }
+
+ Done:
+ if (ThisFile != NULL) {
+ ThisFile->Close (ThisFile);
+ }
+ if (Root != NULL) {
+ Root->Close (Root);
+ }
+ return Status;
+}
+
+/**
+ This routine adjust the memory information for different memory type and
+ save them into the variables for next boot.
+**/
+VOID
+BdsSetMemoryTypeInformationVariable (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ EFI_MEMORY_TYPE_INFORMATION *PreviousMemoryTypeInformation;
+ EFI_MEMORY_TYPE_INFORMATION *CurrentMemoryTypeInformation;
+ UINTN VariableSize;
+ UINTN Index;
+ UINTN Index1;
+ UINT32 Previous;
+ UINT32 Current;
+ UINT32 Next;
+ EFI_HOB_GUID_TYPE *GuidHob;
+ BOOLEAN MemoryTypeInformationModified;
+ BOOLEAN MemoryTypeInformationVariableExists;
+ EFI_BOOT_MODE BootMode;
+
+ MemoryTypeInformationModified = FALSE;
+ MemoryTypeInformationVariableExists = FALSE;
+
+
+ BootMode = GetBootModeHob ();
+ //
+ // In BOOT_IN_RECOVERY_MODE, Variable region is not reliable.
+ //
+ if (BootMode == BOOT_IN_RECOVERY_MODE) {
+ return;
+ }
+
+ //
+ // Only check the the Memory Type Information variable in the boot mode
+ // other than BOOT_WITH_DEFAULT_SETTINGS because the Memory Type
+ // Information is not valid in this boot mode.
+ //
+ if (BootMode != BOOT_WITH_DEFAULT_SETTINGS) {
+ VariableSize = 0;
+ Status = gRT->GetVariable (
+ EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
+ &gEfiMemoryTypeInformationGuid,
+ NULL,
+ &VariableSize,
+ NULL
+ );
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ MemoryTypeInformationVariableExists = TRUE;
+ }
+ }
+
+ //
+ // Retrieve the current memory usage statistics. If they are not found, then
+ // no adjustments can be made to the Memory Type Information variable.
+ //
+ Status = EfiGetSystemConfigurationTable (
+ &gEfiMemoryTypeInformationGuid,
+ (VOID **) &CurrentMemoryTypeInformation
+ );
+ if (EFI_ERROR (Status) || CurrentMemoryTypeInformation == NULL) {
+ return;
+ }
+
+ //
+ // Get the Memory Type Information settings from Hob if they exist,
+ // PEI is responsible for getting them from variable and build a Hob to save them.
+ // If the previous Memory Type Information is not available, then set defaults
+ //
+ GuidHob = GetFirstGuidHob (&gEfiMemoryTypeInformationGuid);
+ if (GuidHob == NULL) {
+ //
+ // If Platform has not built Memory Type Info into the Hob, just return.
+ //
+ return;
+ }
+ PreviousMemoryTypeInformation = GET_GUID_HOB_DATA (GuidHob);
+ VariableSize = GET_GUID_HOB_DATA_SIZE (GuidHob);
+
+ //
+ // Use a heuristic to adjust the Memory Type Information for the next boot
+ //
+ DEBUG ((EFI_D_INFO, "Memory Previous Current Next \n"));
+ DEBUG ((EFI_D_INFO, " Type Pages Pages Pages \n"));
+ DEBUG ((EFI_D_INFO, "====== ======== ======== ========\n"));
+
+ for (Index = 0; PreviousMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {
+
+ for (Index1 = 0; CurrentMemoryTypeInformation[Index1].Type != EfiMaxMemoryType; Index1++) {
+ if (PreviousMemoryTypeInformation[Index].Type == CurrentMemoryTypeInformation[Index1].Type) {
+ break;
+ }
+ }
+ if (CurrentMemoryTypeInformation[Index1].Type == EfiMaxMemoryType) {
+ continue;
+ }
+
+ //
+ // Previous is the number of pages pre-allocated
+ // Current is the number of pages actually needed
+ //
+ Previous = PreviousMemoryTypeInformation[Index].NumberOfPages;
+ Current = CurrentMemoryTypeInformation[Index1].NumberOfPages;
+ Next = Previous;
+
+ //
+ // Inconsistent Memory Reserved across bootings may lead to S4 fail
+ // Write next varible to 125% * current when the pre-allocated memory is:
+ // 1. More than 150% of needed memory and boot mode is BOOT_WITH_DEFAULT_SETTING
+ // 2. Less than the needed memory
+ //
+ if ((Current + (Current >> 1)) < Previous) {
+ if (BootMode == BOOT_WITH_DEFAULT_SETTINGS) {
+ Next = Current + (Current >> 2);
+ }
+ } else if (Current > Previous) {
+ Next = Current + (Current >> 2);
+ }
+ if (Next > 0 && Next < 4) {
+ Next = 4;
+ }
+
+ if (Next != Previous) {
+ PreviousMemoryTypeInformation[Index].NumberOfPages = Next;
+ MemoryTypeInformationModified = TRUE;
+ }
+
+ DEBUG ((EFI_D_INFO, " %02x %08x %08x %08x\n", PreviousMemoryTypeInformation[Index].Type, Previous, Current, Next));
+ }
+
+ //
+ // If any changes were made to the Memory Type Information settings, then set the new variable value;
+ // Or create the variable in first boot.
+ //
+ if (MemoryTypeInformationModified || !MemoryTypeInformationVariableExists) {
+ Status = SetVariableAndReportStatusCodeOnError (
+ EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
+ &gEfiMemoryTypeInformationGuid,
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
+ VariableSize,
+ PreviousMemoryTypeInformation
+ );
+
+ if (!EFI_ERROR (Status)) {
+ //
+ // If the Memory Type Information settings have been modified, then reset the platform
+ // so the new Memory Type Information setting will be used to guarantee that an S4
+ // entry/resume cycle will not fail.
+ //
+ if (MemoryTypeInformationModified && PcdGetBool (PcdResetOnMemoryTypeInformationChange)) {
+ DEBUG ((EFI_D_INFO, "Memory Type Information settings change. Warm Reset!!!\n"));
+ gRT->ResetSystem (EfiResetWarm, EFI_SUCCESS, 0, NULL);
+ }
+ } else {
+ DEBUG ((EFI_D_ERROR, "Memory Type Information settings cannot be saved. OS S4 may fail!\n"));
+ }
+ }
+}
+
+/**
+ This routine is kept for backward compatibility.
+**/
+VOID
+EFIAPI
+BdsLibSaveMemoryTypeInformation (
+ VOID
+ )
+{
+}
+
+
+/**
+ Identify a user and, if authenticated, returns the current user profile handle.
+
+ @param[out] User Point to user profile handle.
+
+ @retval EFI_SUCCESS User is successfully identified, or user identification
+ is not supported.
+ @retval EFI_ACCESS_DENIED User is not successfully identified
+
+**/
+EFI_STATUS
+EFIAPI
+BdsLibUserIdentify (
+ OUT EFI_USER_PROFILE_HANDLE *User
+ )
+{
+ EFI_STATUS Status;
+ EFI_USER_MANAGER_PROTOCOL *Manager;
+
+ Status = gBS->LocateProtocol (
+ &gEfiUserManagerProtocolGuid,
+ NULL,
+ (VOID **) &Manager
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_SUCCESS;
+ }
+
+ return Manager->Identify (Manager, User);
+}
+
+/**
+ Set the variable and report the error through status code upon failure.
+
+ @param VariableName A Null-terminated string that is the name of the vendor's variable.
+ Each VariableName is unique for each VendorGuid. VariableName must
+ contain 1 or more characters. If VariableName is an empty 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. Unless the EFI_VARIABLE_APPEND_WRITE,
+ EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS, or
+ EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS attribute is set, a size of zero
+ causes the variable to be deleted. When the EFI_VARIABLE_APPEND_WRITE attribute is
+ set, then a SetVariable() call with a DataSize of zero will not cause any change to
+ the variable value (the timestamp associated with the variable may be updated however
+ even if no new data value is provided,see the description of the
+ EFI_VARIABLE_AUTHENTICATION_2 descriptor below. In this case the DataSize will not
+ be zero since the EFI_VARIABLE_AUTHENTICATION_2 descriptor will be populated).
+ @param Data The contents for the 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, name, and GUID was supplied, or the
+ DataSize exceeds the maximum allowed.
+ @retval EFI_INVALID_PARAMETER VariableName is an empty string.
+ @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 retrieved due to a hardware error.
+ @retval EFI_WRITE_PROTECTED The variable in question is read-only.
+ @retval EFI_WRITE_PROTECTED The variable in question cannot be deleted.
+ @retval EFI_SECURITY_VIOLATION The variable could not be written due to EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS
+ or EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACESS being set, but the AuthInfo
+ does NOT pass the validation check carried out by the firmware.
+
+ @retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.
+**/
+EFI_STATUS
+SetVariableAndReportStatusCodeOnError (
+ IN CHAR16 *VariableName,
+ IN EFI_GUID *VendorGuid,
+ IN UINT32 Attributes,
+ IN UINTN DataSize,
+ IN VOID *Data
+ )
+{
+ EFI_STATUS Status;
+ EDKII_SET_VARIABLE_STATUS *SetVariableStatus;
+ UINTN NameSize;
+
+ Status = gRT->SetVariable (
+ VariableName,
+ VendorGuid,
+ Attributes,
+ DataSize,
+ Data
+ );
+ if (EFI_ERROR (Status)) {
+ NameSize = StrSize (VariableName);
+ SetVariableStatus = AllocatePool (sizeof (EDKII_SET_VARIABLE_STATUS) + NameSize + DataSize);
+ if (SetVariableStatus != NULL) {
+ CopyGuid (&SetVariableStatus->Guid, VendorGuid);
+ SetVariableStatus->NameSize = NameSize;
+ SetVariableStatus->DataSize = DataSize;
+ SetVariableStatus->SetStatus = Status;
+ SetVariableStatus->Attributes = Attributes;
+ CopyMem (SetVariableStatus + 1, VariableName, NameSize);
+ if ((Data != NULL) && (DataSize != 0)) {
+ CopyMem (((UINT8 *) (SetVariableStatus + 1)) + NameSize, Data, DataSize);
+ }
+
+ REPORT_STATUS_CODE_EX (
+ EFI_ERROR_CODE,
+ PcdGet32 (PcdErrorCodeSetVariable),
+ 0,
+ NULL,
+ &gEdkiiStatusCodeDataTypeVariableGuid,
+ SetVariableStatus,
+ sizeof (EDKII_SET_VARIABLE_STATUS) + NameSize + DataSize
+ );
+
+ FreePool (SetVariableStatus);
+ }
+ }
+
+ return Status;
+}
+
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