/** @file
Entry and initialization module for the browser.
Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.
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 "Setup.h"
SETUP_DRIVER_PRIVATE_DATA mPrivateData = {
SETUP_DRIVER_SIGNATURE,
NULL,
{
SendForm,
BrowserCallback
}
};
EFI_HII_DATABASE_PROTOCOL *mHiiDatabase;
EFI_HII_STRING_PROTOCOL *mHiiString;
EFI_HII_CONFIG_ROUTING_PROTOCOL *mHiiConfigRouting;
UINTN gBrowserContextCount = 0;
LIST_ENTRY gBrowserContextList = INITIALIZE_LIST_HEAD_VARIABLE (gBrowserContextList);
BANNER_DATA *gBannerData;
EFI_HII_HANDLE gFrontPageHandle;
UINTN gClassOfVfr;
UINTN gFunctionKeySetting;
BOOLEAN gResetRequired;
BOOLEAN gNvUpdateRequired;
EFI_HII_HANDLE gHiiHandle;
UINT16 gDirection;
EFI_SCREEN_DESCRIPTOR gScreenDimensions;
//
// Browser Global Strings
//
CHAR16 *gFunctionNineString;
CHAR16 *gFunctionTenString;
CHAR16 *gEnterString;
CHAR16 *gEnterCommitString;
CHAR16 *gEnterEscapeString;
CHAR16 *gEscapeString;
CHAR16 *gSaveFailed;
CHAR16 *gMoveHighlight;
CHAR16 *gMakeSelection;
CHAR16 *gDecNumericInput;
CHAR16 *gHexNumericInput;
CHAR16 *gToggleCheckBox;
CHAR16 *gPromptForData;
CHAR16 *gPromptForPassword;
CHAR16 *gPromptForNewPassword;
CHAR16 *gConfirmPassword;
CHAR16 *gConfirmError;
CHAR16 *gPassowordInvalid;
CHAR16 *gPressEnter;
CHAR16 *gEmptyString;
CHAR16 *gAreYouSure;
CHAR16 *gYesResponse;
CHAR16 *gNoResponse;
CHAR16 *gMiniString;
CHAR16 *gPlusString;
CHAR16 *gMinusString;
CHAR16 *gAdjustNumber;
CHAR16 *gSaveChanges;
CHAR16 *gOptionMismatch;
CHAR16 *gFormSuppress;
CHAR16 *mUnknownString = L"!";
CHAR16 gPromptBlockWidth;
CHAR16 gOptionBlockWidth;
CHAR16 gHelpBlockWidth;
EFI_GUID gZeroGuid = {0, 0, 0, {0, 0, 0, 0, 0, 0, 0, 0}};
EFI_GUID gSetupBrowserGuid = {
0xab368524, 0xb60c, 0x495b, {0xa0, 0x9, 0x12, 0xe8, 0x5b, 0x1a, 0xea, 0x32}
};
FORM_BROWSER_FORMSET *gOldFormSet;
FUNCTIION_KEY_SETTING gFunctionKeySettingTable[] = {
//
// Boot Manager
//
{
{
0x847bc3fe,
0xb974,
0x446d,
{
0x94,
0x49,
0x5a,
0xd5,
0x41,
0x2e,
0x99,
0x3b
}
},
NONE_FUNCTION_KEY_SETTING
},
//
// Device Manager
//
{
{
0x3ebfa8e6,
0x511d,
0x4b5b,
{
0xa9,
0x5f,
0xfb,
0x38,
0x26,
0xf,
0x1c,
0x27
}
},
NONE_FUNCTION_KEY_SETTING
},
//
// BMM FormSet.
//
{
{
0x642237c7,
0x35d4,
0x472d,
{
0x83,
0x65,
0x12,
0xe0,
0xcc,
0xf2,
0x7a,
0x22
}
},
NONE_FUNCTION_KEY_SETTING
},
//
// BMM File Explorer FormSet.
//
{
{
0x1f2d63e1,
0xfebd,
0x4dc7,
{
0x9c,
0xc5,
0xba,
0x2b,
0x1c,
0xef,
0x9c,
0x5b
}
},
NONE_FUNCTION_KEY_SETTING
},
};
/**
This is the routine which an external caller uses to direct the browser
where to obtain it's information.
@param This The Form Browser protocol instanse.
@param Handles A pointer to an array of Handles. If HandleCount > 1 we
display a list of the formsets for the handles specified.
@param HandleCount The number of Handles specified in Handle.
@param FormSetGuid This field points to the EFI_GUID which must match the Guid
field in the EFI_IFR_FORM_SET op-code for the specified
forms-based package. If FormSetGuid is NULL, then this
function will display the first found forms package.
@param FormId This field specifies which EFI_IFR_FORM to render as the first
displayable page. If this field has a value of 0x0000, then
the forms browser will render the specified forms in their encoded order.
@param ScreenDimensions Points to recommended form dimensions, including any non-content area, in
characters.
@param ActionRequest Points to the action recommended by the form.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
@retval EFI_NOT_FOUND No valid forms could be found to display.
**/
EFI_STATUS
EFIAPI
SendForm (
IN CONST EFI_FORM_BROWSER2_PROTOCOL *This,
IN EFI_HII_HANDLE *Handles,
IN UINTN HandleCount,
IN EFI_GUID *FormSetGuid, OPTIONAL
IN UINT16 FormId, OPTIONAL
IN CONST EFI_SCREEN_DESCRIPTOR *ScreenDimensions, OPTIONAL
OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest OPTIONAL
)
{
EFI_STATUS Status;
UI_MENU_SELECTION *Selection;
UINTN Index;
FORM_BROWSER_FORMSET *FormSet;
//
// Save globals used by SendForm()
//
SaveBrowserContext ();
Status = EFI_SUCCESS;
ZeroMem (&gScreenDimensions, sizeof (EFI_SCREEN_DESCRIPTOR));
//
// Seed the dimensions in the global
//
gST->ConOut->QueryMode (
gST->ConOut,
gST->ConOut->Mode->Mode,
&gScreenDimensions.RightColumn,
&gScreenDimensions.BottomRow
);
if (ScreenDimensions != NULL) {
//
// Check local dimension vs. global dimension.
//
if ((gScreenDimensions.RightColumn < ScreenDimensions->RightColumn) ||
(gScreenDimensions.BottomRow < ScreenDimensions->BottomRow)
) {
Status = EFI_INVALID_PARAMETER;
goto Done;
} else {
//
// Local dimension validation.
//
if ((ScreenDimensions->RightColumn > ScreenDimensions->LeftColumn) &&
(ScreenDimensions->BottomRow > ScreenDimensions->TopRow) &&
((ScreenDimensions->RightColumn - ScreenDimensions->LeftColumn) > 2) &&
(
(ScreenDimensions->BottomRow - ScreenDimensions->TopRow) > STATUS_BAR_HEIGHT +
SCROLL_ARROW_HEIGHT *
2 +
FRONT_PAGE_HEADER_HEIGHT +
FOOTER_HEIGHT +
1
)
) {
CopyMem (&gScreenDimensions, (VOID *) ScreenDimensions, sizeof (EFI_SCREEN_DESCRIPTOR));
} else {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
}
}
gOptionBlockWidth = (CHAR16) ((gScreenDimensions.RightColumn - gScreenDimensions.LeftColumn) / 3);
gPromptBlockWidth = (CHAR16) (gOptionBlockWidth + LEFT_SKIPPED_COLUMNS);
gHelpBlockWidth = (CHAR16) (gOptionBlockWidth - LEFT_SKIPPED_COLUMNS);
//
// Initialize the strings for the browser, upon exit of the browser, the strings will be freed
//
InitializeBrowserStrings ();
gFunctionKeySetting = DEFAULT_FUNCTION_KEY_SETTING;
//
// Ensure we are in Text mode
//
gST->ConOut->SetAttribute (gST->ConOut, EFI_TEXT_ATTR (EFI_LIGHTGRAY, EFI_BLACK));
for (Index = 0; Index < HandleCount; Index++) {
Selection = AllocateZeroPool (sizeof (UI_MENU_SELECTION));
ASSERT (Selection != NULL);
Selection->Handle = Handles[Index];
if (FormSetGuid != NULL) {
CopyMem (&Selection->FormSetGuid, FormSetGuid, sizeof (EFI_GUID));
Selection->FormId = FormId;
}
gOldFormSet = NULL;
gNvUpdateRequired = FALSE;
do {
FormSet = AllocateZeroPool (sizeof (FORM_BROWSER_FORMSET));
ASSERT (FormSet != NULL);
//
// Initialize internal data structures of FormSet
//
Status = InitializeFormSet (Selection->Handle, &Selection->FormSetGuid, FormSet);
if (EFI_ERROR (Status) || IsListEmpty (&FormSet->FormListHead)) {
DestroyFormSet (FormSet);
break;
}
Selection->FormSet = FormSet;
//
// Display this formset
//
gCurrentSelection = Selection;
Status = SetupBrowser (Selection);
gCurrentSelection = NULL;
if (EFI_ERROR (Status)) {
break;
}
} while (Selection->Action == UI_ACTION_REFRESH_FORMSET);
if (gOldFormSet != NULL) {
DestroyFormSet (gOldFormSet);
gOldFormSet = NULL;
}
FreePool (Selection);
}
if (ActionRequest != NULL) {
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_NONE;
if (gResetRequired) {
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_RESET;
}
}
FreeBrowserStrings ();
gST->ConOut->SetAttribute (gST->ConOut, EFI_TEXT_ATTR (EFI_LIGHTGRAY, EFI_BLACK));
gST->ConOut->ClearScreen (gST->ConOut);
Done:
//
// Restore globals used by SendForm()
//
RestoreBrowserContext ();
return Status;
}
/**
This function is called by a callback handler to retrieve uncommitted state
data from the browser.
@param This A pointer to the EFI_FORM_BROWSER2_PROTOCOL
instance.
@param ResultsDataSize A pointer to the size of the buffer associated
with ResultsData.
@param ResultsData A string returned from an IFR browser or
equivalent. The results string will have no
routing information in them.
@param RetrieveData A BOOLEAN field which allows an agent to retrieve
(if RetrieveData = TRUE) data from the uncommitted
browser state information or set (if RetrieveData
= FALSE) data in the uncommitted browser state
information.
@param VariableGuid An optional field to indicate the target variable
GUID name to use.
@param VariableName An optional field to indicate the target
human-readable variable name.
@retval EFI_SUCCESS The results have been distributed or are awaiting
distribution.
@retval EFI_BUFFER_TOO_SMALL The ResultsDataSize specified was too small to
contain the results data.
**/
EFI_STATUS
EFIAPI
BrowserCallback (
IN CONST EFI_FORM_BROWSER2_PROTOCOL *This,
IN OUT UINTN *ResultsDataSize,
IN OUT EFI_STRING ResultsData,
IN BOOLEAN RetrieveData,
IN CONST EFI_GUID *VariableGuid, OPTIONAL
IN CONST CHAR16 *VariableName OPTIONAL
)
{
EFI_STATUS Status;
LIST_ENTRY *Link;
FORMSET_STORAGE *Storage;
FORM_BROWSER_FORMSET *FormSet;
BOOLEAN Found;
CHAR16 *ConfigResp;
CHAR16 *StrPtr;
UINTN BufferSize;
UINTN TmpSize;
if (ResultsDataSize == NULL || ResultsData == NULL) {
return EFI_INVALID_PARAMETER;
}
if (gCurrentSelection == NULL) {
return EFI_NOT_READY;
}
Storage = NULL;
ConfigResp = NULL;
FormSet = gCurrentSelection->FormSet;
//
// Find target storage
//
Link = GetFirstNode (&FormSet->StorageListHead);
if (IsNull (&FormSet->StorageListHead, Link)) {
return EFI_UNSUPPORTED;
}
if (VariableGuid != NULL) {
//
// Try to find target storage
//
Found = FALSE;
while (!IsNull (&FormSet->StorageListHead, Link)) {
Storage = FORMSET_STORAGE_FROM_LINK (Link);
Link = GetNextNode (&FormSet->StorageListHead, Link);
if (CompareGuid (&Storage->Guid, (EFI_GUID *) VariableGuid)) {
if (Storage->Type == EFI_HII_VARSTORE_BUFFER) {
//
// Buffer storage require both GUID and Name
//
if (VariableName == NULL) {
return EFI_NOT_FOUND;
}
if (StrCmp (Storage->Name, (CHAR16 *) VariableName) != 0) {
continue;
}
}
Found = TRUE;
break;
}
}
if (!Found) {
return EFI_NOT_FOUND;
}
} else {
//
// GUID/Name is not specified, take the first storage in FormSet
//
Storage = FORMSET_STORAGE_FROM_LINK (Link);
}
if (RetrieveData) {
//
// Skip if there is no RequestElement
//
if (Storage->ElementCount == 0) {
return EFI_SUCCESS;
}
//
// Generate
//
Status = StorageToConfigResp (Storage, &ConfigResp);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Skip and '&' to point to
//
StrPtr = ConfigResp + StrLen (Storage->ConfigHdr) + 1;
BufferSize = StrSize (StrPtr);
if (*ResultsDataSize < BufferSize) {
*ResultsDataSize = BufferSize;
FreePool (ConfigResp);
return EFI_BUFFER_TOO_SMALL;
}
*ResultsDataSize = BufferSize;
CopyMem (ResultsData, StrPtr, BufferSize);
FreePool (ConfigResp);
} else {
//
// Prepare
//
TmpSize = StrLen (ResultsData);
BufferSize = (TmpSize + StrLen (Storage->ConfigHdr) + 2) * sizeof (CHAR16);
ConfigResp = AllocateZeroPool (BufferSize);
ASSERT (ConfigResp != NULL);
StrCpy (ConfigResp, Storage->ConfigHdr);
StrCat (ConfigResp, L"&");
StrCat (ConfigResp, ResultsData);
//
// Update Browser uncommited data
//
Status = ConfigRespToStorage (Storage, ConfigResp);
if (EFI_ERROR (Status)) {
return Status;
}
}
return EFI_SUCCESS;
}
/**
Initialize Setup Browser driver.
@param ImageHandle The image handle.
@param SystemTable The system table.
@retval EFI_SUCCESS The Setup Browser module is initialized correctly..
@return Other value if failed to initialize the Setup Browser module.
**/
EFI_STATUS
EFIAPI
InitializeSetup (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
//
// Locate required Hii relative protocols
//
Status = gBS->LocateProtocol (
&gEfiHiiDatabaseProtocolGuid,
NULL,
(VOID **) &mHiiDatabase
);
ASSERT_EFI_ERROR (Status);
Status = gBS->LocateProtocol (
&gEfiHiiStringProtocolGuid,
NULL,
(VOID **) &mHiiString
);
ASSERT_EFI_ERROR (Status);
Status = gBS->LocateProtocol (
&gEfiHiiConfigRoutingProtocolGuid,
NULL,
(VOID **) &mHiiConfigRouting
);
ASSERT_EFI_ERROR (Status);
//
// Publish our HII data
//
gHiiHandle = HiiAddPackages (
&gSetupBrowserGuid,
ImageHandle,
SetupBrowserStrings,
NULL
);
ASSERT (gHiiHandle != NULL);
//
// Initialize Driver private data
//
gBannerData = AllocateZeroPool (sizeof (BANNER_DATA));
ASSERT (gBannerData != NULL);
//
// Install FormBrowser2 protocol
//
mPrivateData.Handle = NULL;
Status = gBS->InstallProtocolInterface (
&mPrivateData.Handle,
&gEfiFormBrowser2ProtocolGuid,
EFI_NATIVE_INTERFACE,
&mPrivateData.FormBrowser2
);
ASSERT_EFI_ERROR (Status);
return Status;
}
/**
Create a new string in HII Package List.
@param String The String to be added
@param HiiHandle The package list in the HII database to insert the
specified string.
@return The output string.
**/
EFI_STRING_ID
NewString (
IN CHAR16 *String,
IN EFI_HII_HANDLE HiiHandle
)
{
EFI_STRING_ID StringId;
StringId = HiiSetString (HiiHandle, 0, String, NULL);
ASSERT (StringId != 0);
return StringId;
}
/**
Delete a string from HII Package List.
@param StringId Id of the string in HII database.
@param HiiHandle The HII package list handle.
@retval EFI_SUCCESS The string was deleted successfully.
**/
EFI_STATUS
DeleteString (
IN EFI_STRING_ID StringId,
IN EFI_HII_HANDLE HiiHandle
)
{
CHAR16 NullChar;
NullChar = CHAR_NULL;
HiiSetString (HiiHandle, StringId, &NullChar, NULL);
return EFI_SUCCESS;
}
/**
Get the string based on the StringId and HII Package List Handle.
@param Token The String's ID.
@param HiiHandle The package list in the HII database to search for
the specified string.
@return The output string.
**/
CHAR16 *
GetToken (
IN EFI_STRING_ID Token,
IN EFI_HII_HANDLE HiiHandle
)
{
EFI_STRING String;
if (HiiHandle == NULL) {
return NULL;
}
String = HiiGetString (HiiHandle, Token, NULL);
if (String == NULL) {
String = AllocateCopyPool (sizeof (mUnknownString), mUnknownString);
ASSERT (String != NULL);
}
return (CHAR16 *) String;
}
/**
Allocate new memory and then copy the Unicode string Source to Destination.
@param Dest Location to copy string
@param Src String to copy
**/
VOID
NewStringCpy (
IN OUT CHAR16 **Dest,
IN CHAR16 *Src
)
{
if (*Dest != NULL) {
FreePool (*Dest);
}
*Dest = AllocateCopyPool (StrSize (Src), Src);
ASSERT (*Dest != NULL);
}
/**
Allocate new memory and concatinate Source on the end of Destination.
@param Dest String to added to the end of.
@param Src String to concatinate.
**/
VOID
NewStringCat (
IN OUT CHAR16 **Dest,
IN CHAR16 *Src
)
{
CHAR16 *NewString;
UINTN TmpSize;
if (*Dest == NULL) {
NewStringCpy (Dest, Src);
return;
}
TmpSize = StrSize (*Dest);
NewString = AllocateZeroPool (TmpSize + StrSize (Src) - 1);
ASSERT (NewString != NULL);
StrCpy (NewString, *Dest);
StrCat (NewString, Src);
FreePool (*Dest);
*Dest = NewString;
}
/**
Synchronize Storage's Edit copy to Shadow copy.
@param Storage The Storage to be synchronized.
**/
VOID
SynchronizeStorage (
IN FORMSET_STORAGE *Storage
)
{
LIST_ENTRY *Link;
NAME_VALUE_NODE *Node;
switch (Storage->Type) {
case EFI_HII_VARSTORE_BUFFER:
CopyMem (Storage->Buffer, Storage->EditBuffer, Storage->Size);
break;
case EFI_HII_VARSTORE_NAME_VALUE:
Link = GetFirstNode (&Storage->NameValueListHead);
while (!IsNull (&Storage->NameValueListHead, Link)) {
Node = NAME_VALUE_NODE_FROM_LINK (Link);
NewStringCpy (&Node->Value, Node->EditValue);
Link = GetNextNode (&Storage->NameValueListHead, Link);
}
break;
case EFI_HII_VARSTORE_EFI_VARIABLE:
default:
break;
}
}
/**
Get Value for given Name from a NameValue Storage.
@param Storage The NameValue Storage.
@param Name The Name.
@param Value The retured Value.
@retval EFI_SUCCESS Value found for given Name.
@retval EFI_NOT_FOUND No such Name found in NameValue storage.
**/
EFI_STATUS
GetValueByName (
IN FORMSET_STORAGE *Storage,
IN CHAR16 *Name,
IN OUT CHAR16 **Value
)
{
LIST_ENTRY *Link;
NAME_VALUE_NODE *Node;
*Value = NULL;
Link = GetFirstNode (&Storage->NameValueListHead);
while (!IsNull (&Storage->NameValueListHead, Link)) {
Node = NAME_VALUE_NODE_FROM_LINK (Link);
if (StrCmp (Name, Node->Name) == 0) {
NewStringCpy (Value, Node->EditValue);
return EFI_SUCCESS;
}
Link = GetNextNode (&Storage->NameValueListHead, Link);
}
return EFI_NOT_FOUND;
}
/**
Set Value of given Name in a NameValue Storage.
@param Storage The NameValue Storage.
@param Name The Name.
@param Value The Value to set.
@retval EFI_SUCCESS Value found for given Name.
@retval EFI_NOT_FOUND No such Name found in NameValue storage.
**/
EFI_STATUS
SetValueByName (
IN FORMSET_STORAGE *Storage,
IN CHAR16 *Name,
IN CHAR16 *Value
)
{
LIST_ENTRY *Link;
NAME_VALUE_NODE *Node;
Link = GetFirstNode (&Storage->NameValueListHead);
while (!IsNull (&Storage->NameValueListHead, Link)) {
Node = NAME_VALUE_NODE_FROM_LINK (Link);
if (StrCmp (Name, Node->Name) == 0) {
if (Node->EditValue != NULL) {
FreePool (Node->EditValue);
}
Node->EditValue = AllocateCopyPool (StrSize (Value), Value);
ASSERT (Node->EditValue != NULL);
return EFI_SUCCESS;
}
Link = GetNextNode (&Storage->NameValueListHead, Link);
}
return EFI_NOT_FOUND;
}
/**
Convert setting of Buffer Storage or NameValue Storage to .
@param Storage The Storage to be conveted.
@param ConfigResp The returned .
@retval EFI_SUCCESS Convert success.
@retval EFI_INVALID_PARAMETER Incorrect storage type.
**/
EFI_STATUS
StorageToConfigResp (
IN FORMSET_STORAGE *Storage,
IN CHAR16 **ConfigResp
)
{
EFI_STATUS Status;
EFI_STRING Progress;
LIST_ENTRY *Link;
NAME_VALUE_NODE *Node;
Status = EFI_SUCCESS;
switch (Storage->Type) {
case EFI_HII_VARSTORE_BUFFER:
Status = mHiiConfigRouting->BlockToConfig (
mHiiConfigRouting,
Storage->ConfigRequest,
Storage->EditBuffer,
Storage->Size,
ConfigResp,
&Progress
);
break;
case EFI_HII_VARSTORE_NAME_VALUE:
*ConfigResp = NULL;
NewStringCat (ConfigResp, Storage->ConfigHdr);
Link = GetFirstNode (&Storage->NameValueListHead);
while (!IsNull (&Storage->NameValueListHead, Link)) {
Node = NAME_VALUE_NODE_FROM_LINK (Link);
NewStringCat (ConfigResp, L"&");
NewStringCat (ConfigResp, Node->Name);
NewStringCat (ConfigResp, L"=");
NewStringCat (ConfigResp, Node->EditValue);
Link = GetNextNode (&Storage->NameValueListHead, Link);
}
break;
case EFI_HII_VARSTORE_EFI_VARIABLE:
default:
Status = EFI_INVALID_PARAMETER;
break;
}
return Status;
}
/**
Convert to settings in Buffer Storage or NameValue Storage.
@param Storage The Storage to receive the settings.
@param ConfigResp The to be converted.
@retval EFI_SUCCESS Convert success.
@retval EFI_INVALID_PARAMETER Incorrect storage type.
**/
EFI_STATUS
ConfigRespToStorage (
IN FORMSET_STORAGE *Storage,
IN CHAR16 *ConfigResp
)
{
EFI_STATUS Status;
EFI_STRING Progress;
UINTN BufferSize;
CHAR16 *StrPtr;
CHAR16 *Name;
CHAR16 *Value;
Status = EFI_SUCCESS;
switch (Storage->Type) {
case EFI_HII_VARSTORE_BUFFER:
BufferSize = Storage->Size;
Status = mHiiConfigRouting->ConfigToBlock (
mHiiConfigRouting,
ConfigResp,
Storage->EditBuffer,
&BufferSize,
&Progress
);
break;
case EFI_HII_VARSTORE_NAME_VALUE:
StrPtr = StrStr (ConfigResp, L"PATH");
if (StrPtr == NULL) {
break;
}
StrPtr = StrStr (ConfigResp, L"&");
while (StrPtr != NULL) {
//
// Skip '&'
//
StrPtr = StrPtr + 1;
Name = StrPtr;
StrPtr = StrStr (StrPtr, L"=");
if (StrPtr == NULL) {
break;
}
*StrPtr = 0;
//
// Skip '='
//
StrPtr = StrPtr + 1;
Value = StrPtr;
StrPtr = StrStr (StrPtr, L"&");
if (StrPtr != NULL) {
*StrPtr = 0;
}
SetValueByName (Storage, Name, Value);
}
break;
case EFI_HII_VARSTORE_EFI_VARIABLE:
default:
Status = EFI_INVALID_PARAMETER;
break;
}
return Status;
}
/**
Get Question's current Value.
@param FormSet FormSet data structure.
@param Form Form data structure.
@param Question Question to be initialized.
@param Cached TRUE: get from Edit copy FALSE: get from original
Storage
@retval EFI_SUCCESS The function completed successfully.
**/
EFI_STATUS
GetQuestionValue (
IN FORM_BROWSER_FORMSET *FormSet,
IN FORM_BROWSER_FORM *Form,
IN OUT FORM_BROWSER_STATEMENT *Question,
IN BOOLEAN Cached
)
{
EFI_STATUS Status;
BOOLEAN Enabled;
BOOLEAN Pending;
UINT8 *Dst;
UINTN StorageWidth;
EFI_TIME EfiTime;
FORMSET_STORAGE *Storage;
EFI_IFR_TYPE_VALUE *QuestionValue;
CHAR16 *ConfigRequest;
CHAR16 *Progress;
CHAR16 *Result;
CHAR16 *Value;
CHAR16 *StringPtr;
UINTN Length;
UINTN Index;
UINTN LengthStr;
BOOLEAN IsBufferStorage;
BOOLEAN IsString;
CHAR16 TemStr[5];
UINT8 DigitUint8;
Status = EFI_SUCCESS;
//
// Statement don't have storage, skip them
//
if (Question->QuestionId == 0) {
return Status;
}
//
// Question value is provided by an Expression, evaluate it
//
if (Question->ValueExpression != NULL) {
Status = EvaluateExpression (FormSet, Form, Question->ValueExpression);
if (!EFI_ERROR (Status)) {
CopyMem (&Question->HiiValue, &Question->ValueExpression->Result, sizeof (EFI_HII_VALUE));
}
return Status;
}
//
// Get question value by read expression.
//
if (Question->ReadExpression != NULL && Form->FormType == STANDARD_MAP_FORM_TYPE) {
Status = EvaluateExpression (FormSet, Form, Question->ReadExpression);
if (!EFI_ERROR (Status) && (Question->ReadExpression->Result.Type < EFI_IFR_TYPE_OTHER)) {
//
// Only update question value to the valid result.
//
CopyMem (&Question->HiiValue, &Question->ReadExpression->Result, sizeof (EFI_HII_VALUE));
return EFI_SUCCESS;
}
}
//
// Question value is provided by RTC
//
Storage = Question->Storage;
QuestionValue = &Question->HiiValue.Value;
if (Storage == NULL) {
//
// It's a Question without storage, or RTC date/time
//
if (Question->Operand == EFI_IFR_DATE_OP || Question->Operand == EFI_IFR_TIME_OP) {
//
// Date and time define the same Flags bit
//
switch (Question->Flags & EFI_QF_DATE_STORAGE) {
case QF_DATE_STORAGE_TIME:
Status = gRT->GetTime (&EfiTime, NULL);
break;
case QF_DATE_STORAGE_WAKEUP:
Status = gRT->GetWakeupTime (&Enabled, &Pending, &EfiTime);
break;
case QF_DATE_STORAGE_NORMAL:
default:
//
// For date/time without storage
//
return EFI_SUCCESS;
}
if (EFI_ERROR (Status)) {
return Status;
}
if (Question->Operand == EFI_IFR_DATE_OP) {
QuestionValue->date.Year = EfiTime.Year;
QuestionValue->date.Month = EfiTime.Month;
QuestionValue->date.Day = EfiTime.Day;
} else {
QuestionValue->time.Hour = EfiTime.Hour;
QuestionValue->time.Minute = EfiTime.Minute;
QuestionValue->time.Second = EfiTime.Second;
}
}
return EFI_SUCCESS;
}
//
// Question value is provided by EFI variable
//
StorageWidth = Question->StorageWidth;
if (Storage->Type == EFI_HII_VARSTORE_EFI_VARIABLE) {
if (Question->BufferValue != NULL) {
Dst = Question->BufferValue;
} else {
Dst = (UINT8 *) QuestionValue;
}
Status = gRT->GetVariable (
Question->VariableName,
&Storage->Guid,
NULL,
&StorageWidth,
Dst
);
//
// Always return success, even this EFI variable doesn't exist
//
return EFI_SUCCESS;
}
//
// Question Value is provided by Buffer Storage or NameValue Storage
//
if (Question->BufferValue != NULL) {
//
// This Question is password or orderedlist
//
Dst = Question->BufferValue;
} else {
//
// Other type of Questions
//
Dst = (UINT8 *) &Question->HiiValue.Value;
}
IsBufferStorage = (BOOLEAN) ((Storage->Type == EFI_HII_VARSTORE_BUFFER) ? TRUE : FALSE);
IsString = (BOOLEAN) ((Question->HiiValue.Type == EFI_IFR_TYPE_STRING) ? TRUE : FALSE);
if (Cached) {
if (IsBufferStorage) {
//
// Copy from storage Edit buffer
//
CopyMem (Dst, Storage->EditBuffer + Question->VarStoreInfo.VarOffset, StorageWidth);
} else {
Value = NULL;
Status = GetValueByName (Storage, Question->VariableName, &Value);
if (EFI_ERROR (Status)) {
return Status;
}
ASSERT (Value != NULL);
LengthStr = StrLen (Value);
Status = EFI_SUCCESS;
if (IsString) {
//
// Convert Config String to Unicode String, e.g "0041004200430044" => "ABCD"
// Add string tail char L'\0' into Length
//
Length = StorageWidth + sizeof (CHAR16);
if (Length < ((LengthStr / 4 + 1) * 2)) {
Status = EFI_BUFFER_TOO_SMALL;
} else {
StringPtr = (CHAR16 *) Dst;
ZeroMem (TemStr, sizeof (TemStr));
for (Index = 0; Index < LengthStr; Index += 4) {
StrnCpy (TemStr, Value + Index, 4);
StringPtr[Index/4] = (CHAR16) StrHexToUint64 (TemStr);
}
//
// Add tailing L'\0' character
//
StringPtr[Index/4] = L'\0';
}
} else {
if (StorageWidth < ((LengthStr + 1) / 2)) {
Status = EFI_BUFFER_TOO_SMALL;
} else {
ZeroMem (TemStr, sizeof (TemStr));
for (Index = 0; Index < LengthStr; Index ++) {
TemStr[0] = Value[LengthStr - Index - 1];
DigitUint8 = (UINT8) StrHexToUint64 (TemStr);
if ((Index & 1) == 0) {
Dst [Index/2] = DigitUint8;
} else {
Dst [Index/2] = (UINT8) ((DigitUint8 << 4) + Dst [Index/2]);
}
}
}
}
FreePool (Value);
}
} else {
//
// Request current settings from Configuration Driver
//
if (FormSet->ConfigAccess == NULL) {
return EFI_NOT_FOUND;
}
//
// ::= + ||
// + "&" +
//
if (IsBufferStorage) {
Length = StrLen (Storage->ConfigHdr);
Length += StrLen (Question->BlockName);
} else {
Length = StrLen (Storage->ConfigHdr);
Length += StrLen (Question->VariableName) + 1;
}
ConfigRequest = AllocateZeroPool ((Length + 1) * sizeof (CHAR16));
ASSERT (ConfigRequest != NULL);
StrCpy (ConfigRequest, Storage->ConfigHdr);
if (IsBufferStorage) {
StrCat (ConfigRequest, Question->BlockName);
} else {
StrCat (ConfigRequest, L"&");
StrCat (ConfigRequest, Question->VariableName);
}
Status = FormSet->ConfigAccess->ExtractConfig (
FormSet->ConfigAccess,
ConfigRequest,
&Progress,
&Result
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Skip
//
Value = Result + Length;
if (IsBufferStorage) {
//
// Skip "&VALUE"
//
Value = Value + 6;
}
if (*Value != '=') {
FreePool (Result);
return EFI_NOT_FOUND;
}
//
// Skip '=', point to value
//
Value = Value + 1;
//
// Suppress if any
//
StringPtr = Value;
while (*StringPtr != L'\0' && *StringPtr != L'&') {
StringPtr++;
}
*StringPtr = L'\0';
LengthStr = StrLen (Value);
Status = EFI_SUCCESS;
if (!IsBufferStorage && IsString) {
//
// Convert Config String to Unicode String, e.g "0041004200430044" => "ABCD"
// Add string tail char L'\0' into Length
//
Length = StorageWidth + sizeof (CHAR16);
if (Length < ((LengthStr / 4 + 1) * 2)) {
Status = EFI_BUFFER_TOO_SMALL;
} else {
StringPtr = (CHAR16 *) Dst;
ZeroMem (TemStr, sizeof (TemStr));
for (Index = 0; Index < LengthStr; Index += 4) {
StrnCpy (TemStr, Value + Index, 4);
StringPtr[Index/4] = (CHAR16) StrHexToUint64 (TemStr);
}
//
// Add tailing L'\0' character
//
StringPtr[Index/4] = L'\0';
}
} else {
if (StorageWidth < ((LengthStr + 1) / 2)) {
Status = EFI_BUFFER_TOO_SMALL;
} else {
ZeroMem (TemStr, sizeof (TemStr));
for (Index = 0; Index < LengthStr; Index ++) {
TemStr[0] = Value[LengthStr - Index - 1];
DigitUint8 = (UINT8) StrHexToUint64 (TemStr);
if ((Index & 1) == 0) {
Dst [Index/2] = DigitUint8;
} else {
Dst [Index/2] = (UINT8) ((DigitUint8 << 4) + Dst [Index/2]);
}
}
}
}
if (EFI_ERROR (Status)) {
FreePool (Result);
return Status;
}
//
// Synchronize Edit Buffer
//
if (IsBufferStorage) {
CopyMem (Storage->EditBuffer + Question->VarStoreInfo.VarOffset, Dst, StorageWidth);
} else {
SetValueByName (Storage, Question->VariableName, Value);
}
FreePool (Result);
}
return Status;
}
/**
Save Question Value to edit copy(cached) or Storage(uncached).
@param FormSet FormSet data structure.
@param Form Form data structure.
@param Question Pointer to the Question.
@param Cached TRUE: set to Edit copy FALSE: set to original
Storage
@retval EFI_SUCCESS The function completed successfully.
**/
EFI_STATUS
SetQuestionValue (
IN FORM_BROWSER_FORMSET *FormSet,
IN FORM_BROWSER_FORM *Form,
IN OUT FORM_BROWSER_STATEMENT *Question,
IN BOOLEAN Cached
)
{
EFI_STATUS Status;
BOOLEAN Enabled;
BOOLEAN Pending;
UINT8 *Src;
EFI_TIME EfiTime;
UINTN BufferLen;
UINTN StorageWidth;
FORMSET_STORAGE *Storage;
EFI_IFR_TYPE_VALUE *QuestionValue;
CHAR16 *ConfigResp;
CHAR16 *Progress;
CHAR16 *Value;
UINTN Length;
BOOLEAN IsBufferStorage;
BOOLEAN IsString;
UINT8 *TemBuffer;
CHAR16 *TemName;
CHAR16 *TemString;
UINTN Index;
Status = EFI_SUCCESS;
//
// Statement don't have storage, skip them
//
if (Question->QuestionId == 0) {
return Status;
}
//
// If Question value is provided by an Expression, then it is read only
//
if (Question->ValueExpression != NULL) {
return Status;
}
//
// Before set question value, evaluate its write expression.
//
if (Question->WriteExpression != NULL && Form->FormType == STANDARD_MAP_FORM_TYPE) {
Status = EvaluateExpression (FormSet, Form, Question->WriteExpression);
if (EFI_ERROR (Status)) {
return Status;
}
}
//
// Question value is provided by RTC
//
Storage = Question->Storage;
QuestionValue = &Question->HiiValue.Value;
if (Storage == NULL) {
//
// It's a Question without storage, or RTC date/time
//
if (Question->Operand == EFI_IFR_DATE_OP || Question->Operand == EFI_IFR_TIME_OP) {
//
// Date and time define the same Flags bit
//
switch (Question->Flags & EFI_QF_DATE_STORAGE) {
case QF_DATE_STORAGE_TIME:
Status = gRT->GetTime (&EfiTime, NULL);
break;
case QF_DATE_STORAGE_WAKEUP:
Status = gRT->GetWakeupTime (&Enabled, &Pending, &EfiTime);
break;
case QF_DATE_STORAGE_NORMAL:
default:
//
// For date/time without storage
//
return EFI_SUCCESS;
}
if (EFI_ERROR (Status)) {
return Status;
}
if (Question->Operand == EFI_IFR_DATE_OP) {
EfiTime.Year = QuestionValue->date.Year;
EfiTime.Month = QuestionValue->date.Month;
EfiTime.Day = QuestionValue->date.Day;
} else {
EfiTime.Hour = QuestionValue->time.Hour;
EfiTime.Minute = QuestionValue->time.Minute;
EfiTime.Second = QuestionValue->time.Second;
}
if ((Question->Flags & EFI_QF_DATE_STORAGE) == QF_DATE_STORAGE_TIME) {
Status = gRT->SetTime (&EfiTime);
} else {
Status = gRT->SetWakeupTime (TRUE, &EfiTime);
}
}
return Status;
}
//
// Question value is provided by EFI variable
//
StorageWidth = Question->StorageWidth;
if (Storage->Type == EFI_HII_VARSTORE_EFI_VARIABLE) {
if (Question->BufferValue != NULL) {
Src = Question->BufferValue;
} else {
Src = (UINT8 *) QuestionValue;
}
Status = gRT->SetVariable (
Question->VariableName,
&Storage->Guid,
Storage->Attributes,
StorageWidth,
Src
);
return Status;
}
//
// Question Value is provided by Buffer Storage or NameValue Storage
//
if (Question->BufferValue != NULL) {
Src = Question->BufferValue;
} else {
Src = (UINT8 *) &Question->HiiValue.Value;
}
IsBufferStorage = (BOOLEAN) ((Storage->Type == EFI_HII_VARSTORE_BUFFER) ? TRUE : FALSE);
IsString = (BOOLEAN) ((Question->HiiValue.Type == EFI_IFR_TYPE_STRING) ? TRUE : FALSE);
if (IsBufferStorage) {
//
// Copy to storage edit buffer
//
CopyMem (Storage->EditBuffer + Question->VarStoreInfo.VarOffset, Src, StorageWidth);
} else {
if (IsString) {
//
// Allocate enough string buffer.
//
Value = NULL;
BufferLen = ((StrLen ((CHAR16 *) Src) * 4) + 1) * sizeof (CHAR16);
Value = AllocateZeroPool (BufferLen);
ASSERT (Value != NULL);
//
// Convert Unicode String to Config String, e.g. "ABCD" => "0041004200430044"
//
TemName = (CHAR16 *) Src;
TemString = Value;
for (; *TemName != L'\0'; TemName++) {
TemString += UnicodeValueToString (TemString, PREFIX_ZERO | RADIX_HEX, *TemName, 4);
}
} else {
BufferLen = StorageWidth * 2 + 1;
Value = AllocateZeroPool (BufferLen * sizeof (CHAR16));
ASSERT (Value != NULL);
//
// Convert Buffer to Hex String
//
TemBuffer = Src + StorageWidth - 1;
TemString = Value;
for (Index = 0; Index < StorageWidth; Index ++, TemBuffer --) {
TemString += UnicodeValueToString (TemString, PREFIX_ZERO | RADIX_HEX, *TemBuffer, 2);
}
}
Status = SetValueByName (Storage, Question->VariableName, Value);
FreePool (Value);
}
if (!Cached) {
//
// ::= + + "&VALUE=" + "StorageWidth * 2" ||
// + "&" + + "=" + ""
//
if (IsBufferStorage) {
Length = StrLen (Question->BlockName) + 7;
} else {
Length = StrLen (Question->VariableName) + 2;
}
if (!IsBufferStorage && IsString) {
Length += (StrLen ((CHAR16 *) Src) * 4);
} else {
Length += (StorageWidth * 2);
}
ConfigResp = AllocateZeroPool ((StrLen (Storage->ConfigHdr) + Length + 1) * sizeof (CHAR16));
ASSERT (ConfigResp != NULL);
StrCpy (ConfigResp, Storage->ConfigHdr);
if (IsBufferStorage) {
StrCat (ConfigResp, Question->BlockName);
StrCat (ConfigResp, L"&VALUE=");
} else {
StrCat (ConfigResp, L"&");
StrCat (ConfigResp, Question->VariableName);
StrCat (ConfigResp, L"=");
}
Value = ConfigResp + StrLen (ConfigResp);
if (!IsBufferStorage && IsString) {
//
// Convert Unicode String to Config String, e.g. "ABCD" => "0041004200430044"
//
TemName = (CHAR16 *) Src;
TemString = Value;
for (; *TemName != L'\0'; TemName++) {
TemString += UnicodeValueToString (TemString, PREFIX_ZERO | RADIX_HEX, *TemName, 4);
}
} else {
//
// Convert Buffer to Hex String
//
TemBuffer = Src + StorageWidth - 1;
TemString = Value;
for (Index = 0; Index < StorageWidth; Index ++, TemBuffer --) {
TemString += UnicodeValueToString (TemString, PREFIX_ZERO | RADIX_HEX, *TemBuffer, 2);
}
}
//
// Convert to lower char.
//
for (TemString = Value; *Value != L'\0'; Value++) {
if (*Value >= L'A' && *Value <= L'Z') {
*Value = (CHAR16) (*Value - L'A' + L'a');
}
}
//
// Submit Question Value to Configuration Driver
//
if (FormSet->ConfigAccess != NULL) {
Status = FormSet->ConfigAccess->RouteConfig (
FormSet->ConfigAccess,
ConfigResp,
&Progress
);
if (EFI_ERROR (Status)) {
FreePool (ConfigResp);
return Status;
}
}
FreePool (ConfigResp);
//
// Synchronize shadow Buffer
//
SynchronizeStorage (Storage);
}
return Status;
}
/**
Perform inconsistent check for a Form.
@param FormSet FormSet data structure.
@param Form Form data structure.
@param Question The Question to be validated.
@param Type Validation type: InConsistent or NoSubmit
@retval EFI_SUCCESS Form validation pass.
@retval other Form validation failed.
**/
EFI_STATUS
ValidateQuestion (
IN FORM_BROWSER_FORMSET *FormSet,
IN FORM_BROWSER_FORM *Form,
IN FORM_BROWSER_STATEMENT *Question,
IN UINTN Type
)
{
EFI_STATUS Status;
LIST_ENTRY *Link;
LIST_ENTRY *ListHead;
EFI_STRING PopUp;
EFI_INPUT_KEY Key;
FORM_EXPRESSION *Expression;
if (Type == EFI_HII_EXPRESSION_INCONSISTENT_IF) {
ListHead = &Question->InconsistentListHead;
} else if (Type == EFI_HII_EXPRESSION_NO_SUBMIT_IF) {
ListHead = &Question->NoSubmitListHead;
} else {
return EFI_UNSUPPORTED;
}
Link = GetFirstNode (ListHead);
while (!IsNull (ListHead, Link)) {
Expression = FORM_EXPRESSION_FROM_LINK (Link);
//
// Evaluate the expression
//
Status = EvaluateExpression (FormSet, Form, Expression);
if (EFI_ERROR (Status)) {
return Status;
}
if (Expression->Result.Value.b) {
//
// Condition meet, show up error message
//
if (Expression->Error != 0) {
PopUp = GetToken (Expression->Error, FormSet->HiiHandle);
do {
CreateDialog (4, TRUE, 0, NULL, &Key, gEmptyString, PopUp, gPressEnter, gEmptyString);
} while (Key.UnicodeChar != CHAR_CARRIAGE_RETURN);
FreePool (PopUp);
}
return EFI_NOT_READY;
}
Link = GetNextNode (ListHead, Link);
}
return EFI_SUCCESS;
}
/**
Perform NoSubmit check for each Form in FormSet.
@param FormSet FormSet data structure.
@retval EFI_SUCCESS Form validation pass.
@retval other Form validation failed.
**/
EFI_STATUS
NoSubmitCheck (
IN FORM_BROWSER_FORMSET *FormSet
)
{
EFI_STATUS Status;
LIST_ENTRY *Link;
FORM_BROWSER_STATEMENT *Question;
FORM_BROWSER_FORM *Form;
LIST_ENTRY *LinkForm;
LinkForm = GetFirstNode (&FormSet->FormListHead);
while (!IsNull (&FormSet->FormListHead, LinkForm)) {
Form = FORM_BROWSER_FORM_FROM_LINK (LinkForm);
Link = GetFirstNode (&Form->StatementListHead);
while (!IsNull (&Form->StatementListHead, Link)) {
Question = FORM_BROWSER_STATEMENT_FROM_LINK (Link);
Status = ValidateQuestion (FormSet, Form, Question, EFI_HII_EXPRESSION_NO_SUBMIT_IF);
if (EFI_ERROR (Status)) {
return Status;
}
Link = GetNextNode (&Form->StatementListHead, Link);
}
LinkForm = GetNextNode (&FormSet->FormListHead, LinkForm);
}
return EFI_SUCCESS;
}
/**
Submit a Form.
@param FormSet FormSet data structure.
@param Form Form data structure.
@retval EFI_SUCCESS The function completed successfully.
**/
EFI_STATUS
SubmitForm (
IN FORM_BROWSER_FORMSET *FormSet,
IN FORM_BROWSER_FORM *Form
)
{
EFI_STATUS Status;
LIST_ENTRY *Link;
EFI_STRING ConfigResp;
EFI_STRING Progress;
FORMSET_STORAGE *Storage;
//
// Validate the Form by NoSubmit check
//
Status = NoSubmitCheck (FormSet);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Submit Buffer storage or Name/Value storage
//
Link = GetFirstNode (&FormSet->StorageListHead);
while (!IsNull (&FormSet->StorageListHead, Link)) {
Storage = FORMSET_STORAGE_FROM_LINK (Link);
Link = GetNextNode (&FormSet->StorageListHead, Link);
if (Storage->Type == EFI_HII_VARSTORE_EFI_VARIABLE) {
continue;
}
//
// Skip if there is no RequestElement
//
if (Storage->ElementCount == 0) {
continue;
}
//
// Prepare
//
Status = StorageToConfigResp (Storage, &ConfigResp);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Send to Configuration Driver
//
if (FormSet->ConfigAccess != NULL) {
Status = FormSet->ConfigAccess->RouteConfig (
FormSet->ConfigAccess,
ConfigResp,
&Progress
);
if (EFI_ERROR (Status)) {
FreePool (ConfigResp);
return Status;
}
}
FreePool (ConfigResp);
//
// Config success, update storage shadow Buffer
//
SynchronizeStorage (Storage);
}
gNvUpdateRequired = FALSE;
return EFI_SUCCESS;
}
/**
Reset Question to its default value.
@param FormSet The form set.
@param Form The form.
@param Question The question.
@param DefaultId The Class of the default.
@retval EFI_SUCCESS Question is reset to default value.
**/
EFI_STATUS
GetQuestionDefault (
IN FORM_BROWSER_FORMSET *FormSet,
IN FORM_BROWSER_FORM *Form,
IN FORM_BROWSER_STATEMENT *Question,
IN UINT16 DefaultId
)
{
EFI_STATUS Status;
LIST_ENTRY *Link;
QUESTION_DEFAULT *Default;
QUESTION_OPTION *Option;
EFI_HII_VALUE *HiiValue;
UINT8 Index;
EFI_STRING StrValue;
Status = EFI_SUCCESS;
StrValue = NULL;
//
// Statement don't have storage, skip them
//
if (Question->QuestionId == 0) {
return Status;
}
//
// There are three ways to specify default value for a Question:
// 1, use nested EFI_IFR_DEFAULT (highest priority)
// 2, set flags of EFI_ONE_OF_OPTION (provide Standard and Manufacturing default)
// 3, set flags of EFI_IFR_CHECKBOX (provide Standard and Manufacturing default) (lowest priority)
//
HiiValue = &Question->HiiValue;
//
// EFI_IFR_DEFAULT has highest priority
//
if (!IsListEmpty (&Question->DefaultListHead)) {
Link = GetFirstNode (&Question->DefaultListHead);
while (!IsNull (&Question->DefaultListHead, Link)) {
Default = QUESTION_DEFAULT_FROM_LINK (Link);
if (Default->DefaultId == DefaultId) {
if (Default->ValueExpression != NULL) {
//
// Default is provided by an Expression, evaluate it
//
Status = EvaluateExpression (FormSet, Form, Default->ValueExpression);
if (EFI_ERROR (Status)) {
return Status;
}
CopyMem (HiiValue, &Default->ValueExpression->Result, sizeof (EFI_HII_VALUE));
} else {
//
// Default value is embedded in EFI_IFR_DEFAULT
//
CopyMem (HiiValue, &Default->Value, sizeof (EFI_HII_VALUE));
}
if (HiiValue->Type == EFI_IFR_TYPE_STRING) {
StrValue = HiiGetString (FormSet->HiiHandle, HiiValue->Value.string, NULL);
if (StrValue == NULL) {
return EFI_NOT_FOUND;
}
Question->BufferValue = AllocateCopyPool (StrSize (StrValue), StrValue);
}
return EFI_SUCCESS;
}
Link = GetNextNode (&Question->DefaultListHead, Link);
}
}
//
// EFI_ONE_OF_OPTION
//
if ((Question->Operand == EFI_IFR_ONE_OF_OP) && !IsListEmpty (&Question->OptionListHead)) {
if (DefaultId <= EFI_HII_DEFAULT_CLASS_MANUFACTURING) {
//
// OneOfOption could only provide Standard and Manufacturing default
//
Link = GetFirstNode (&Question->OptionListHead);
while (!IsNull (&Question->OptionListHead, Link)) {
Option = QUESTION_OPTION_FROM_LINK (Link);
if (((DefaultId == EFI_HII_DEFAULT_CLASS_STANDARD) && ((Option->Flags & EFI_IFR_OPTION_DEFAULT) != 0)) ||
((DefaultId == EFI_HII_DEFAULT_CLASS_MANUFACTURING) && ((Option->Flags & EFI_IFR_OPTION_DEFAULT_MFG) != 0))
) {
CopyMem (HiiValue, &Option->Value, sizeof (EFI_HII_VALUE));
return EFI_SUCCESS;
}
Link = GetNextNode (&Question->OptionListHead, Link);
}
}
}
//
// EFI_IFR_CHECKBOX - lowest priority
//
if (Question->Operand == EFI_IFR_CHECKBOX_OP) {
if (DefaultId <= EFI_HII_DEFAULT_CLASS_MANUFACTURING) {
//
// Checkbox could only provide Standard and Manufacturing default
//
if (((DefaultId == EFI_HII_DEFAULT_CLASS_STANDARD) && ((Question->Flags & EFI_IFR_CHECKBOX_DEFAULT) != 0)) ||
((DefaultId == EFI_HII_DEFAULT_CLASS_MANUFACTURING) && ((Question->Flags & EFI_IFR_CHECKBOX_DEFAULT_MFG) != 0))
) {
HiiValue->Value.b = TRUE;
} else {
HiiValue->Value.b = FALSE;
}
return EFI_SUCCESS;
}
}
//
// For Questions without default
//
switch (Question->Operand) {
case EFI_IFR_ONE_OF_OP:
//
// Take first oneof option as oneof's default value
//
if (ValueToOption (Question, HiiValue) == NULL) {
Link = GetFirstNode (&Question->OptionListHead);
if (!IsNull (&Question->OptionListHead, Link)) {
Option = QUESTION_OPTION_FROM_LINK (Link);
CopyMem (HiiValue, &Option->Value, sizeof (EFI_HII_VALUE));
}
}
break;
case EFI_IFR_ORDERED_LIST_OP:
//
// Take option sequence in IFR as ordered list's default value
//
Index = 0;
Link = GetFirstNode (&Question->OptionListHead);
while (!IsNull (&Question->OptionListHead, Link)) {
Option = QUESTION_OPTION_FROM_LINK (Link);
SetArrayData (Question->BufferValue, Question->ValueType, Index, Option->Value.Value.u64);
Index++;
if (Index >= Question->MaxContainers) {
break;
}
Link = GetNextNode (&Question->OptionListHead, Link);
}
break;
default:
Status = EFI_NOT_FOUND;
break;
}
return Status;
}
/**
Reset Questions in a Form to their default value.
@param FormSet FormSet data structure.
@param Form The Form which to be reset.
@param DefaultId The Class of the default.
@retval EFI_SUCCESS The function completed successfully.
**/
EFI_STATUS
ExtractFormDefault (
IN FORM_BROWSER_FORMSET *FormSet,
IN FORM_BROWSER_FORM *Form,
IN UINT16 DefaultId
)
{
EFI_STATUS Status;
LIST_ENTRY *Link;
FORM_BROWSER_STATEMENT *Question;
Link = GetFirstNode (&Form->StatementListHead);
while (!IsNull (&Form->StatementListHead, Link)) {
Question = FORM_BROWSER_STATEMENT_FROM_LINK (Link);
Link = GetNextNode (&Form->StatementListHead, Link);
//
// If Question is disabled, don't reset it to default
//
if (Question->DisableExpression != NULL) {
Status = EvaluateExpression (FormSet, Form, Question->DisableExpression);
if (!EFI_ERROR (Status) && Question->DisableExpression->Result.Value.b) {
continue;
}
}
//
// Reset Question to its default value
//
Status = GetQuestionDefault (FormSet, Form, Question, DefaultId);
if (EFI_ERROR (Status)) {
continue;
}
//
// Synchronize Buffer storage's Edit buffer
//
if ((Question->Storage != NULL) &&
(Question->Storage->Type != EFI_HII_VARSTORE_EFI_VARIABLE)) {
SetQuestionValue (FormSet, Form, Question, TRUE);
}
}
return EFI_SUCCESS;
}
/**
Initialize Question's Edit copy from Storage.
@param Selection Selection contains the information about
the Selection, form and formset to be displayed.
Selection action may be updated in retrieve callback.
@param FormSet FormSet data structure.
@param Form Form data structure.
@retval EFI_SUCCESS The function completed successfully.
**/
EFI_STATUS
LoadFormConfig (
IN OUT UI_MENU_SELECTION *Selection,
IN FORM_BROWSER_FORMSET *FormSet,
IN FORM_BROWSER_FORM *Form
)
{
EFI_STATUS Status;
LIST_ENTRY *Link;
FORM_BROWSER_STATEMENT *Question;
UINT8 *BufferValue;
UINTN StorageWidth;
EFI_HII_VALUE *HiiValue;
EFI_BROWSER_ACTION_REQUEST ActionRequest;
Link = GetFirstNode (&Form->StatementListHead);
while (!IsNull (&Form->StatementListHead, Link)) {
Question = FORM_BROWSER_STATEMENT_FROM_LINK (Link);
//
// Initialize local copy of Value for each Question
//
Status = GetQuestionValue (FormSet, Form, Question, TRUE);
if (EFI_ERROR (Status)) {
return Status;
}
if ((Question->Operand == EFI_IFR_STRING_OP) || (Question->Operand == EFI_IFR_PASSWORD_OP)) {
HiiSetString (FormSet->HiiHandle, Question->HiiValue.Value.string, (CHAR16*)Question->BufferValue, NULL);
}
//
// Check whether EfiVarstore with CallBack can be got.
//
if ((FormSet->ConfigAccess != NULL) &&
(Selection->Action != UI_ACTION_REFRESH_FORMSET) &&
(Question->QuestionId != 0) &&
(Question->Storage != NULL) &&
(Question->Storage->Type == EFI_HII_VARSTORE_EFI_VARIABLE) &&
((Question->QuestionFlags & EFI_IFR_FLAG_CALLBACK) == EFI_IFR_FLAG_CALLBACK)) {
//
// Check QuestionValue does exist.
//
StorageWidth = Question->StorageWidth;
if (Question->BufferValue != NULL) {
BufferValue = Question->BufferValue;
} else {
BufferValue = (UINT8 *) &Question->HiiValue.Value;
}
Status = gRT->GetVariable (
Question->VariableName,
&Question->Storage->Guid,
NULL,
&StorageWidth,
BufferValue
);
if (!EFI_ERROR (Status)) {
ActionRequest = EFI_BROWSER_ACTION_REQUEST_NONE;
HiiValue = &Question->HiiValue;
BufferValue = (UINT8 *) &Question->HiiValue.Value;
if (HiiValue->Type == EFI_IFR_TYPE_BUFFER) {
BufferValue = Question->BufferValue;
}
Status = FormSet->ConfigAccess->Callback (
FormSet->ConfigAccess,
EFI_BROWSER_ACTION_RETRIEVE,
Question->QuestionId,
HiiValue->Type,
(EFI_IFR_TYPE_VALUE *) BufferValue,
&ActionRequest
);
if (!EFI_ERROR (Status)) {
switch (ActionRequest) {
case EFI_BROWSER_ACTION_REQUEST_RESET:
gResetRequired = TRUE;
break;
case EFI_BROWSER_ACTION_REQUEST_SUBMIT:
//
// Till now there is no uncommitted data, so ignore this request
//
break;
case EFI_BROWSER_ACTION_REQUEST_EXIT:
Selection->Action = UI_ACTION_EXIT;
break;
default:
break;
}
}
}
}
Link = GetNextNode (&Form->StatementListHead, Link);
}
return EFI_SUCCESS;
}
/**
Initialize Question's Edit copy from Storage for the whole Formset.
@param Selection Selection contains the information about
the Selection, form and formset to be displayed.
Selection action may be updated in retrieve callback.
@param FormSet FormSet data structure.
@retval EFI_SUCCESS The function completed successfully.
**/
EFI_STATUS
LoadFormSetConfig (
IN OUT UI_MENU_SELECTION *Selection,
IN FORM_BROWSER_FORMSET *FormSet
)
{
EFI_STATUS Status;
LIST_ENTRY *Link;
FORM_BROWSER_FORM *Form;
Link = GetFirstNode (&FormSet->FormListHead);
while (!IsNull (&FormSet->FormListHead, Link)) {
Form = FORM_BROWSER_FORM_FROM_LINK (Link);
//
// Initialize local copy of Value for each Form
//
Status = LoadFormConfig (Selection, FormSet, Form);
if (EFI_ERROR (Status)) {
return Status;
}
Link = GetNextNode (&FormSet->FormListHead, Link);
}
return EFI_SUCCESS;
}
/**
Fill storage's edit copy with settings requested from Configuration Driver.
@param FormSet FormSet data structure.
@param Storage Buffer Storage.
@retval EFI_SUCCESS The function completed successfully.
**/
EFI_STATUS
LoadStorage (
IN FORM_BROWSER_FORMSET *FormSet,
IN FORMSET_STORAGE *Storage
)
{
EFI_STATUS Status;
EFI_STRING Progress;
EFI_STRING Result;
CHAR16 *StrPtr;
if (Storage->Type == EFI_HII_VARSTORE_EFI_VARIABLE) {
return EFI_SUCCESS;
}
if (FormSet->ConfigAccess == NULL) {
return EFI_NOT_FOUND;
}
if (Storage->ElementCount == 0) {
//
// Skip if there is no RequestElement
//
return EFI_SUCCESS;
}
//
// Request current settings from Configuration Driver
//
Status = FormSet->ConfigAccess->ExtractConfig (
FormSet->ConfigAccess,
Storage->ConfigRequest,
&Progress,
&Result
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Convert Result from to
//
StrPtr = StrStr (Result, L"ALTCFG");
if (StrPtr != NULL) {
*StrPtr = L'\0';
}
Status = ConfigRespToStorage (Storage, Result);
FreePool (Result);
return Status;
}
/**
Copy uncommitted data from source Storage to destination Storage.
@param Dst Target Storage for uncommitted data.
@param Src Source Storage for uncommitted data.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_INVALID_PARAMETER Source and destination Storage is not the same type.
**/
EFI_STATUS
CopyStorage (
IN OUT FORMSET_STORAGE *Dst,
IN FORMSET_STORAGE *Src
)
{
LIST_ENTRY *Link;
NAME_VALUE_NODE *Node;
if ((Dst->Type != Src->Type) || (Dst->Size != Src->Size)) {
return EFI_INVALID_PARAMETER;
}
switch (Src->Type) {
case EFI_HII_VARSTORE_BUFFER:
CopyMem (Dst->EditBuffer, Src->EditBuffer, Src->Size);
break;
case EFI_HII_VARSTORE_NAME_VALUE:
Link = GetFirstNode (&Src->NameValueListHead);
while (!IsNull (&Src->NameValueListHead, Link)) {
Node = NAME_VALUE_NODE_FROM_LINK (Link);
SetValueByName (Dst, Node->Name, Node->EditValue);
Link = GetNextNode (&Src->NameValueListHead, Link);
}
break;
case EFI_HII_VARSTORE_EFI_VARIABLE:
default:
break;
}
return EFI_SUCCESS;
}
/**
Get current setting of Questions.
@param FormSet FormSet data structure.
@retval EFI_SUCCESS The function completed successfully.
**/
EFI_STATUS
InitializeCurrentSetting (
IN OUT FORM_BROWSER_FORMSET *FormSet
)
{
LIST_ENTRY *Link;
LIST_ENTRY *Link2;
FORMSET_STORAGE *Storage;
FORMSET_STORAGE *StorageSrc;
FORMSET_STORAGE *OldStorage;
FORM_BROWSER_FORM *Form;
EFI_STATUS Status;
//
// Extract default from IFR binary
//
Link = GetFirstNode (&FormSet->FormListHead);
while (!IsNull (&FormSet->FormListHead, Link)) {
Form = FORM_BROWSER_FORM_FROM_LINK (Link);
Status = ExtractFormDefault (FormSet, Form, EFI_HII_DEFAULT_CLASS_STANDARD);
Link = GetNextNode (&FormSet->FormListHead, Link);
}
//
// Request current settings from Configuration Driver
//
Link = GetFirstNode (&FormSet->StorageListHead);
while (!IsNull (&FormSet->StorageListHead, Link)) {
Storage = FORMSET_STORAGE_FROM_LINK (Link);
OldStorage = NULL;
if (gOldFormSet != NULL) {
//
// Try to find the Storage in backup formset gOldFormSet
//
Link2 = GetFirstNode (&gOldFormSet->StorageListHead);
while (!IsNull (&gOldFormSet->StorageListHead, Link2)) {
StorageSrc = FORMSET_STORAGE_FROM_LINK (Link2);
if (StorageSrc->VarStoreId == Storage->VarStoreId) {
OldStorage = StorageSrc;
break;
}
Link2 = GetNextNode (&gOldFormSet->StorageListHead, Link2);
}
}
if (OldStorage == NULL) {
//
// Storage is not found in backup formset, request it from ConfigDriver
//
Status = LoadStorage (FormSet, Storage);
} else {
//
// Storage found in backup formset, use it
//
Status = CopyStorage (Storage, OldStorage);
}
//
// Now Edit Buffer is filled with default values(lower priority) and current
// settings(higher priority), sychronize it to shadow Buffer
//
if (!EFI_ERROR (Status)) {
SynchronizeStorage (Storage);
}
Link = GetNextNode (&FormSet->StorageListHead, Link);
}
return EFI_SUCCESS;
}
/**
Fetch the Ifr binary data of a FormSet.
@param Handle PackageList Handle
@param FormSetGuid On input, GUID or class GUID of a formset. If not
specified (NULL or zero GUID), take the first
FormSet with class GUID EFI_HII_PLATFORM_SETUP_FORMSET_GUID
found in package list.
On output, GUID of the formset found(if not NULL).
@param BinaryLength The length of the FormSet IFR binary.
@param BinaryData The buffer designed to receive the FormSet.
@retval EFI_SUCCESS Buffer filled with the requested FormSet.
BufferLength was updated.
@retval EFI_INVALID_PARAMETER The handle is unknown.
@retval EFI_NOT_FOUND A form or FormSet on the requested handle cannot
be found with the requested FormId.
**/
EFI_STATUS
GetIfrBinaryData (
IN EFI_HII_HANDLE Handle,
IN OUT EFI_GUID *FormSetGuid,
OUT UINTN *BinaryLength,
OUT UINT8 **BinaryData
)
{
EFI_STATUS Status;
EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList;
UINTN BufferSize;
UINT8 *Package;
UINT8 *OpCodeData;
UINT32 Offset;
UINT32 Offset2;
UINT32 PackageListLength;
EFI_HII_PACKAGE_HEADER PackageHeader;
UINT8 Index;
UINT8 NumberOfClassGuid;
BOOLEAN ClassGuidMatch;
EFI_GUID *ClassGuid;
EFI_GUID *ComparingGuid;
OpCodeData = NULL;
Package = NULL;
ZeroMem (&PackageHeader, sizeof (EFI_HII_PACKAGE_HEADER));
//
// if FormSetGuid is NULL or zero GUID, return first Setup FormSet in the package list
//
if (FormSetGuid == NULL || CompareGuid (FormSetGuid, &gZeroGuid)) {
ComparingGuid = &gEfiHiiPlatformSetupFormsetGuid;
} else {
ComparingGuid = FormSetGuid;
}
//
// Get HII PackageList
//
BufferSize = 0;
HiiPackageList = NULL;
Status = mHiiDatabase->ExportPackageLists (mHiiDatabase, Handle, &BufferSize, HiiPackageList);
if (Status == EFI_BUFFER_TOO_SMALL) {
HiiPackageList = AllocatePool (BufferSize);
ASSERT (HiiPackageList != NULL);
Status = mHiiDatabase->ExportPackageLists (mHiiDatabase, Handle, &BufferSize, HiiPackageList);
}
if (EFI_ERROR (Status)) {
return Status;
}
ASSERT (HiiPackageList != NULL);
//
// Get Form package from this HII package List
//
Offset = sizeof (EFI_HII_PACKAGE_LIST_HEADER);
Offset2 = 0;
CopyMem (&PackageListLength, &HiiPackageList->PackageLength, sizeof (UINT32));
ClassGuidMatch = FALSE;
while (Offset < PackageListLength) {
Package = ((UINT8 *) HiiPackageList) + Offset;
CopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));
if (PackageHeader.Type == EFI_HII_PACKAGE_FORMS) {
//
// Search FormSet in this Form Package
//
Offset2 = sizeof (EFI_HII_PACKAGE_HEADER);
while (Offset2 < PackageHeader.Length) {
OpCodeData = Package + Offset2;
if (((EFI_IFR_OP_HEADER *) OpCodeData)->OpCode == EFI_IFR_FORM_SET_OP) {
//
// Try to compare against formset GUID
//
if (CompareGuid (ComparingGuid, (EFI_GUID *)(OpCodeData + sizeof (EFI_IFR_OP_HEADER)))) {
break;
}
if (((EFI_IFR_OP_HEADER *) OpCodeData)->Length > OFFSET_OF (EFI_IFR_FORM_SET, Flags)) {
//
// Try to compare against formset class GUID
//
NumberOfClassGuid = (UINT8) (((EFI_IFR_FORM_SET *) OpCodeData)->Flags & 0x3);
ClassGuid = (EFI_GUID *) (OpCodeData + sizeof (EFI_IFR_FORM_SET));
for (Index = 0; Index < NumberOfClassGuid; Index++) {
if (CompareGuid (ComparingGuid, ClassGuid + Index)) {
ClassGuidMatch = TRUE;
break;
}
}
if (ClassGuidMatch) {
break;
}
} else if (ComparingGuid == &gEfiHiiPlatformSetupFormsetGuid) {
ClassGuidMatch = TRUE;
break;
}
}
Offset2 += ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;
}
if (Offset2 < PackageHeader.Length) {
//
// Target formset found
//
break;
}
}
Offset += PackageHeader.Length;
}
if (Offset >= PackageListLength) {
//
// Form package not found in this Package List
//
FreePool (HiiPackageList);
return EFI_NOT_FOUND;
}
if (ClassGuidMatch && (FormSetGuid != NULL)) {
//
// Return the FormSet GUID
//
CopyMem (FormSetGuid, &((EFI_IFR_FORM_SET *) OpCodeData)->Guid, sizeof (EFI_GUID));
}
//
// To determine the length of a whole FormSet IFR binary, one have to parse all the Opcodes
// in this FormSet; So, here just simply copy the data from start of a FormSet to the end
// of the Form Package.
//
*BinaryLength = PackageHeader.Length - Offset2;
*BinaryData = AllocateCopyPool (*BinaryLength, OpCodeData);
FreePool (HiiPackageList);
if (*BinaryData == NULL) {
return EFI_OUT_OF_RESOURCES;
}
return EFI_SUCCESS;
}
/**
Initialize the internal data structure of a FormSet.
@param Handle PackageList Handle
@param FormSetGuid On input, GUID or class GUID of a formset. If not
specified (NULL or zero GUID), take the first
FormSet with class GUID EFI_HII_PLATFORM_SETUP_FORMSET_GUID
found in package list.
On output, GUID of the formset found(if not NULL).
@param FormSet FormSet data structure.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_NOT_FOUND The specified FormSet could not be found.
**/
EFI_STATUS
InitializeFormSet (
IN EFI_HII_HANDLE Handle,
IN OUT EFI_GUID *FormSetGuid,
OUT FORM_BROWSER_FORMSET *FormSet
)
{
EFI_STATUS Status;
EFI_HANDLE DriverHandle;
UINT16 Index;
Status = GetIfrBinaryData (Handle, FormSetGuid, &FormSet->IfrBinaryLength, &FormSet->IfrBinaryData);
if (EFI_ERROR (Status)) {
return Status;
}
FormSet->HiiHandle = Handle;
CopyMem (&FormSet->Guid, FormSetGuid, sizeof (EFI_GUID));
//
// Retrieve ConfigAccess Protocol associated with this HiiPackageList
//
Status = mHiiDatabase->GetPackageListHandle (mHiiDatabase, Handle, &DriverHandle);
if (EFI_ERROR (Status)) {
return Status;
}
FormSet->DriverHandle = DriverHandle;
Status = gBS->HandleProtocol (
DriverHandle,
&gEfiHiiConfigAccessProtocolGuid,
(VOID **) &FormSet->ConfigAccess
);
if (EFI_ERROR (Status)) {
//
// Configuration Driver don't attach ConfigAccess protocol to its HII package
// list, then there will be no configuration action required
//
FormSet->ConfigAccess = NULL;
}
//
// Parse the IFR binary OpCodes
//
Status = ParseOpCodes (FormSet);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Set VFR type by FormSet SubClass field
//
gClassOfVfr = FORMSET_CLASS_PLATFORM_SETUP;
if (FormSet->SubClass == EFI_FRONT_PAGE_SUBCLASS) {
gClassOfVfr = FORMSET_CLASS_FRONT_PAGE;
}
//
// Set VFR type by FormSet class guid
//
for (Index = 0; Index < 3; Index ++) {
if (CompareGuid (&FormSet->ClassGuid[Index], &gEfiHiiPlatformSetupFormsetGuid)) {
gClassOfVfr |= FORMSET_CLASS_PLATFORM_SETUP;
break;
}
}
if ((gClassOfVfr & FORMSET_CLASS_FRONT_PAGE) == FORMSET_CLASS_FRONT_PAGE) {
gFrontPageHandle = FormSet->HiiHandle;
}
//
// Match GUID to find out the function key setting. If match fail, use the default setting.
//
for (Index = 0; Index < sizeof (gFunctionKeySettingTable) / sizeof (FUNCTIION_KEY_SETTING); Index++) {
if (CompareGuid (&FormSet->Guid, &(gFunctionKeySettingTable[Index].FormSetGuid))) {
//
// Update the function key setting.
//
gFunctionKeySetting = gFunctionKeySettingTable[Index].KeySetting;
//
// Function key prompt can not be displayed if the function key has been disabled.
//
if ((gFunctionKeySetting & FUNCTION_NINE) != FUNCTION_NINE) {
gFunctionNineString = GetToken (STRING_TOKEN (EMPTY_STRING), gHiiHandle);
}
if ((gFunctionKeySetting & FUNCTION_TEN) != FUNCTION_TEN) {
gFunctionTenString = GetToken (STRING_TOKEN (EMPTY_STRING), gHiiHandle);
}
}
}
return Status;
}
/**
Save globals used by previous call to SendForm(). SendForm() may be called from
HiiConfigAccess.Callback(), this will cause SendForm() be reentried.
So, save globals of previous call to SendForm() and restore them upon exit.
**/
VOID
SaveBrowserContext (
VOID
)
{
BROWSER_CONTEXT *Context;
gBrowserContextCount++;
if (gBrowserContextCount == 1) {
//
// This is not reentry of SendForm(), no context to save
//
return;
}
Context = AllocatePool (sizeof (BROWSER_CONTEXT));
ASSERT (Context != NULL);
Context->Signature = BROWSER_CONTEXT_SIGNATURE;
//
// Save FormBrowser context
//
Context->BannerData = gBannerData;
Context->ClassOfVfr = gClassOfVfr;
Context->FunctionKeySetting = gFunctionKeySetting;
Context->ResetRequired = gResetRequired;
Context->NvUpdateRequired = gNvUpdateRequired;
Context->Direction = gDirection;
Context->FunctionNineString = gFunctionNineString;
Context->FunctionTenString = gFunctionTenString;
Context->EnterString = gEnterString;
Context->EnterCommitString = gEnterCommitString;
Context->EnterEscapeString = gEnterEscapeString;
Context->EscapeString = gEscapeString;
Context->SaveFailed = gSaveFailed;
Context->MoveHighlight = gMoveHighlight;
Context->MakeSelection = gMakeSelection;
Context->DecNumericInput = gDecNumericInput;
Context->HexNumericInput = gHexNumericInput;
Context->ToggleCheckBox = gToggleCheckBox;
Context->PromptForData = gPromptForData;
Context->PromptForPassword = gPromptForPassword;
Context->PromptForNewPassword = gPromptForNewPassword;
Context->ConfirmPassword = gConfirmPassword;
Context->ConfirmError = gConfirmError;
Context->PassowordInvalid = gPassowordInvalid;
Context->PressEnter = gPressEnter;
Context->EmptyString = gEmptyString;
Context->AreYouSure = gAreYouSure;
Context->YesResponse = gYesResponse;
Context->NoResponse = gNoResponse;
Context->MiniString = gMiniString;
Context->PlusString = gPlusString;
Context->MinusString = gMinusString;
Context->AdjustNumber = gAdjustNumber;
Context->SaveChanges = gSaveChanges;
Context->OptionMismatch = gOptionMismatch;
Context->FormSuppress = gFormSuppress;
Context->PromptBlockWidth = gPromptBlockWidth;
Context->OptionBlockWidth = gOptionBlockWidth;
Context->HelpBlockWidth = gHelpBlockWidth;
Context->OldFormSet = gOldFormSet;
Context->MenuRefreshHead = gMenuRefreshHead;
CopyMem (&Context->ScreenDimensions, &gScreenDimensions, sizeof (gScreenDimensions));
CopyMem (&Context->MenuOption, &gMenuOption, sizeof (gMenuOption));
//
// Insert to FormBrowser context list
//
InsertHeadList (&gBrowserContextList, &Context->Link);
}
/**
Restore globals used by previous call to SendForm().
**/
VOID
RestoreBrowserContext (
VOID
)
{
LIST_ENTRY *Link;
BROWSER_CONTEXT *Context;
ASSERT (gBrowserContextCount != 0);
gBrowserContextCount--;
if (gBrowserContextCount == 0) {
//
// This is not reentry of SendForm(), no context to restore
//
return;
}
ASSERT (!IsListEmpty (&gBrowserContextList));
Link = GetFirstNode (&gBrowserContextList);
Context = BROWSER_CONTEXT_FROM_LINK (Link);
//
// Restore FormBrowser context
//
gBannerData = Context->BannerData;
gClassOfVfr = Context->ClassOfVfr;
gFunctionKeySetting = Context->FunctionKeySetting;
gResetRequired = Context->ResetRequired;
gNvUpdateRequired = Context->NvUpdateRequired;
gDirection = Context->Direction;
gFunctionNineString = Context->FunctionNineString;
gFunctionTenString = Context->FunctionTenString;
gEnterString = Context->EnterString;
gEnterCommitString = Context->EnterCommitString;
gEnterEscapeString = Context->EnterEscapeString;
gEscapeString = Context->EscapeString;
gSaveFailed = Context->SaveFailed;
gMoveHighlight = Context->MoveHighlight;
gMakeSelection = Context->MakeSelection;
gDecNumericInput = Context->DecNumericInput;
gHexNumericInput = Context->HexNumericInput;
gToggleCheckBox = Context->ToggleCheckBox;
gPromptForData = Context->PromptForData;
gPromptForPassword = Context->PromptForPassword;
gPromptForNewPassword = Context->PromptForNewPassword;
gConfirmPassword = Context->ConfirmPassword;
gConfirmError = Context->ConfirmError;
gPassowordInvalid = Context->PassowordInvalid;
gPressEnter = Context->PressEnter;
gEmptyString = Context->EmptyString;
gAreYouSure = Context->AreYouSure;
gYesResponse = Context->YesResponse;
gNoResponse = Context->NoResponse;
gMiniString = Context->MiniString;
gPlusString = Context->PlusString;
gMinusString = Context->MinusString;
gAdjustNumber = Context->AdjustNumber;
gSaveChanges = Context->SaveChanges;
gOptionMismatch = Context->OptionMismatch;
gFormSuppress = Context->FormSuppress;
gPromptBlockWidth = Context->PromptBlockWidth;
gOptionBlockWidth = Context->OptionBlockWidth;
gHelpBlockWidth = Context->HelpBlockWidth;
gOldFormSet = Context->OldFormSet;
gMenuRefreshHead = Context->MenuRefreshHead;
CopyMem (&gScreenDimensions, &Context->ScreenDimensions, sizeof (gScreenDimensions));
CopyMem (&gMenuOption, &Context->MenuOption, sizeof (gMenuOption));
//
// Remove from FormBrowser context list
//
RemoveEntryList (&Context->Link);
gBS->FreePool (Context);
}