/** @file
Dynamically update the pages.

Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#include "BootMaintenanceManager.h"

/**
 Create the global UpdateData structure.

**/
VOID
CreateUpdateData (
  VOID
  )
{
  //
  // Init OpCode Handle and Allocate space for creation of Buffer
  //
  mStartOpCodeHandle = HiiAllocateOpCodeHandle ();
  ASSERT (mStartOpCodeHandle != NULL);

  mEndOpCodeHandle = HiiAllocateOpCodeHandle ();
  ASSERT (mEndOpCodeHandle != NULL);

  //
  // Create Hii Extend Label OpCode as the start opcode
  //
  mStartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (mStartOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
  mStartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;

  //
  // Create Hii Extend Label OpCode as the end opcode
  //
  mEndLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (mEndOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
  mEndLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
  mEndLabel->Number       = LABEL_END;
}

/**
  Refresh the global UpdateData structure.

**/
VOID
RefreshUpdateData (
  VOID
  )
{
  //
  // Free current updated date
  //
  if (mStartOpCodeHandle != NULL) {
    HiiFreeOpCodeHandle (mStartOpCodeHandle);
  }

  //
  // Create new OpCode Handle
  //
  mStartOpCodeHandle = HiiAllocateOpCodeHandle ();

  //
  // Create Hii Extend Label OpCode as the start opcode
  //
  mStartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (mStartOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
  mStartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;

}

/**
  Add a "Go back to main page" tag in front of the form when there are no
  "Apply changes" and "Discard changes" tags in the end of the form.

  @param CallbackData    The BMM context data.

**/
VOID
UpdatePageStart (
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  RefreshUpdateData ();
  mStartLabel->Number = CallbackData->BmmCurrentPageId;

  if (!(CallbackData->BmmAskSaveOrNot)) {
    //
    // Add a "Go back to main page" tag in front of the form when there are no
    // "Apply changes" and "Discard changes" tags in the end of the form.
    //
    HiiCreateGotoOpCode (
      mStartOpCodeHandle,
      FORM_MAIN_ID,
      STRING_TOKEN (STR_FORM_GOTO_MAIN),
      STRING_TOKEN (STR_FORM_GOTO_MAIN),
      0,
      FORM_MAIN_ID
      );
  }
}

/**
  Create the "Apply changes" and "Discard changes" tags. And
  ensure user can return to the main page.

  @param CallbackData    The BMM context data.

**/
VOID
UpdatePageEnd (
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  //
  // Create the "Apply changes" and "Discard changes" tags.
  //
  if (CallbackData->BmmAskSaveOrNot) {
    HiiCreateSubTitleOpCode (
      mStartOpCodeHandle,
      STRING_TOKEN (STR_NULL_STRING),
      0,
      0,
      0
      );

    HiiCreateActionOpCode (
      mStartOpCodeHandle,
      KEY_VALUE_SAVE_AND_EXIT,
      STRING_TOKEN (STR_SAVE_AND_EXIT),
      STRING_TOKEN (STR_NULL_STRING),
      EFI_IFR_FLAG_CALLBACK,
      0
      );
  }

  //
  // Ensure user can return to the main page.
  //
  HiiCreateActionOpCode (
    mStartOpCodeHandle,
    KEY_VALUE_NO_SAVE_AND_EXIT,
    STRING_TOKEN (STR_NO_SAVE_AND_EXIT),
    STRING_TOKEN (STR_NULL_STRING),
    EFI_IFR_FLAG_CALLBACK,
    0
    );

  HiiUpdateForm (
    CallbackData->BmmHiiHandle,
    &mBootMaintGuid,
    CallbackData->BmmCurrentPageId,
    mStartOpCodeHandle, // Label CallbackData->BmmCurrentPageId
    mEndOpCodeHandle    // LABEL_END
    );
}

/**
  Clean up the dynamic opcode at label and form specified by both LabelId.

  @param LabelId         It is both the Form ID and Label ID for opcode deletion.
  @param CallbackData    The BMM context data.

**/
VOID
CleanUpPage (
  IN UINT16                           LabelId,
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  RefreshUpdateData ();

  //
  // Remove all op-codes from dynamic page
  //
  mStartLabel->Number = LabelId;
  HiiUpdateForm (
    CallbackData->BmmHiiHandle,
    &mBootMaintGuid,
    LabelId,
    mStartOpCodeHandle, // Label LabelId
    mEndOpCodeHandle    // LABEL_END
    );
}

/**
  Create a list of Goto Opcode for all terminal devices logged
  by TerminaMenu. This list will be inserted to form FORM_CON_COM_SETUP_ID.

  @param CallbackData    The BMM context data.
**/
VOID
UpdateConCOMPage (
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  BM_MENU_ENTRY       *NewMenuEntry;
  UINT16              Index;

  CallbackData->BmmAskSaveOrNot = TRUE;

  UpdatePageStart (CallbackData);

  for (Index = 0; Index < TerminalMenu.MenuNumber; Index++) {
    NewMenuEntry = BOpt_GetMenuEntry (&TerminalMenu, Index);

    HiiCreateGotoOpCode (
      mStartOpCodeHandle,
      FORM_CON_COM_SETUP_ID,
      NewMenuEntry->DisplayStringToken,
      STRING_TOKEN (STR_NULL_STRING),
      EFI_IFR_FLAG_CALLBACK,
      (UINT16) (TERMINAL_OPTION_OFFSET + Index)
      );
  }

  UpdatePageEnd (CallbackData);
}


/**
  Create a list of boot option from global BootOptionMenu. It
  allow user to delete the boot option.

  @param CallbackData    The BMM context data.

**/
VOID
UpdateBootDelPage (
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  BM_MENU_ENTRY   *NewMenuEntry;
  BM_LOAD_CONTEXT *NewLoadContext;
  UINT16          Index;

  CallbackData->BmmAskSaveOrNot = TRUE;

  UpdatePageStart (CallbackData);

  ASSERT (BootOptionMenu.MenuNumber <= (sizeof (CallbackData->BmmFakeNvData.BootOptionDel) / sizeof (CallbackData->BmmFakeNvData.BootOptionDel[0])));
  for (Index = 0; Index < BootOptionMenu.MenuNumber; Index++) {
    NewMenuEntry    = BOpt_GetMenuEntry (&BootOptionMenu, Index);
    NewLoadContext  = (BM_LOAD_CONTEXT *) NewMenuEntry->VariableContext;
    if (NewLoadContext->IsLegacy) {
      continue;
    }

    NewLoadContext->Deleted = FALSE;

    if (CallbackData->BmmFakeNvData.BootOptionDel[Index] && !CallbackData->BmmFakeNvData.BootOptionDelMark[Index]) {
      //
      // CallbackData->BmmFakeNvData.BootOptionDel[Index] == TRUE means browser knows this boot option is selected
      // CallbackData->BmmFakeNvData.BootOptionDelMark[Index] = FALSE means BDS knows the selected boot option has
      // deleted, browser maintains old useless info. So clear this info here, and later update this info to browser
      // through HiiSetBrowserData function.
      //
      CallbackData->BmmFakeNvData.BootOptionDel[Index] = FALSE;
      CallbackData->BmmOldFakeNVData.BootOptionDel[Index] = FALSE;
    }

    HiiCreateCheckBoxOpCode (
      mStartOpCodeHandle,
      (EFI_QUESTION_ID) (BOOT_OPTION_DEL_QUESTION_ID + Index),
      VARSTORE_ID_BOOT_MAINT,
      (UINT16) (BOOT_OPTION_DEL_VAR_OFFSET + Index),
      NewMenuEntry->DisplayStringToken,
      NewMenuEntry->HelpStringToken,
      EFI_IFR_FLAG_CALLBACK,
      0,
      NULL
      );
  }
  UpdatePageEnd (CallbackData);
}

/**
  Create a lit of driver option from global DriverMenu.

  @param CallbackData    The BMM context data.

**/
VOID
UpdateDrvAddHandlePage (
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  BM_MENU_ENTRY *NewMenuEntry;
  UINT16        Index;

  CallbackData->BmmAskSaveOrNot = FALSE;

  UpdatePageStart (CallbackData);

  for (Index = 0; Index < DriverMenu.MenuNumber; Index++) {
    NewMenuEntry = BOpt_GetMenuEntry (&DriverMenu, Index);

    HiiCreateGotoOpCode (
      mStartOpCodeHandle,
      FORM_DRV_ADD_HANDLE_DESC_ID,
      NewMenuEntry->DisplayStringToken,
      STRING_TOKEN (STR_NULL_STRING),
      EFI_IFR_FLAG_CALLBACK,
      (UINT16) (HANDLE_OPTION_OFFSET + Index)
      );
  }

  UpdatePageEnd (CallbackData);
}

/**
  Create a lit of driver option from global DriverOptionMenu. It
  allow user to delete the driver option.

  @param CallbackData    The BMM context data.

**/
VOID
UpdateDrvDelPage (
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  BM_MENU_ENTRY   *NewMenuEntry;
  BM_LOAD_CONTEXT *NewLoadContext;
  UINT16          Index;

  CallbackData->BmmAskSaveOrNot = TRUE;

  UpdatePageStart (CallbackData);

  ASSERT (DriverOptionMenu.MenuNumber <= (sizeof (CallbackData->BmmFakeNvData.DriverOptionDel) / sizeof (CallbackData->BmmFakeNvData.DriverOptionDel[0])));
  for (Index = 0; Index < DriverOptionMenu.MenuNumber; Index++) {
    NewMenuEntry            = BOpt_GetMenuEntry (&DriverOptionMenu, Index);

    NewLoadContext          = (BM_LOAD_CONTEXT *) NewMenuEntry->VariableContext;
    NewLoadContext->Deleted = FALSE;

    if (CallbackData->BmmFakeNvData.DriverOptionDel[Index] && !CallbackData->BmmFakeNvData.DriverOptionDelMark[Index]) {
      //
      // CallbackData->BmmFakeNvData.BootOptionDel[Index] == TRUE means browser knows this boot option is selected
      // CallbackData->BmmFakeNvData.BootOptionDelMark[Index] = FALSE means BDS knows the selected boot option has
      // deleted, browser maintains old useless info. So clear this info here, and later update this info to browser
      // through HiiSetBrowserData function.
      //
      CallbackData->BmmFakeNvData.DriverOptionDel[Index] = FALSE;
      CallbackData->BmmOldFakeNVData.DriverOptionDel[Index] = FALSE;
    }
    HiiCreateCheckBoxOpCode (
      mStartOpCodeHandle,
      (EFI_QUESTION_ID) (DRIVER_OPTION_DEL_QUESTION_ID + Index),
      VARSTORE_ID_BOOT_MAINT,
      (UINT16) (DRIVER_OPTION_DEL_VAR_OFFSET + Index),
      NewMenuEntry->DisplayStringToken,
      NewMenuEntry->HelpStringToken,
      EFI_IFR_FLAG_CALLBACK,
      0,
      NULL
      );
  }

  UpdatePageEnd (CallbackData);
}

/**
  Prepare the page to allow user to add description for
  a Driver Option.

  @param CallbackData    The BMM context data.

**/
VOID
UpdateDriverAddHandleDescPage (
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  BM_MENU_ENTRY *NewMenuEntry;

  CallbackData->BmmFakeNvData.DriverAddActive          = 0x01;
  CallbackData->BmmFakeNvData.DriverAddForceReconnect  = 0x00;
  CallbackData->BmmAskSaveOrNot                        = TRUE;
  NewMenuEntry = CallbackData->MenuEntry;

  UpdatePageStart (CallbackData);

  HiiCreateSubTitleOpCode (
    mStartOpCodeHandle,
    NewMenuEntry->DisplayStringToken,
    0,
    0,
    0
    );

  HiiCreateStringOpCode (
    mStartOpCodeHandle,
    (EFI_QUESTION_ID) DRV_ADD_HANDLE_DESC_QUESTION_ID,
    VARSTORE_ID_BOOT_MAINT,
    DRV_ADD_HANDLE_DESC_VAR_OFFSET,
    STRING_TOKEN (STR_LOAD_OPTION_DESC),
    STRING_TOKEN (STR_NULL_STRING),
    0,
    0,
    6,
    75,
    NULL
    );

  HiiCreateCheckBoxOpCode (
    mStartOpCodeHandle,
    (EFI_QUESTION_ID) DRV_ADD_RECON_QUESTION_ID,
    VARSTORE_ID_BOOT_MAINT,
    DRV_ADD_RECON_VAR_OFFSET,
    STRING_TOKEN (STR_LOAD_OPTION_FORCE_RECON),
    STRING_TOKEN (STR_LOAD_OPTION_FORCE_RECON),
    0,
    0,
    NULL
    );

  HiiCreateStringOpCode (
    mStartOpCodeHandle,
    (EFI_QUESTION_ID) DRIVER_ADD_OPTION_QUESTION_ID,
    VARSTORE_ID_BOOT_MAINT,
    DRIVER_ADD_OPTION_VAR_OFFSET,
    STRING_TOKEN (STR_OPTIONAL_DATA),
    STRING_TOKEN (STR_NULL_STRING),
    0,
    0,
    6,
    75,
    NULL
    );

  UpdatePageEnd (CallbackData);
}

/**
  Update console page.

  @param UpdatePageId    The form ID to be updated.
  @param ConsoleMenu     The console menu list.
  @param CallbackData    The BMM context data.

**/
VOID
UpdateConsolePage (
  IN UINT16                           UpdatePageId,
  IN BM_MENU_OPTION                   *ConsoleMenu,
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  BM_MENU_ENTRY       *NewMenuEntry;
  BM_CONSOLE_CONTEXT  *NewConsoleContext;
  BM_TERMINAL_CONTEXT *NewTerminalContext;
  UINT16              Index;
  UINT16              Index2;
  UINT8               CheckFlags;
  UINT8               *ConsoleCheck;
  EFI_QUESTION_ID     QuestionIdBase;
  UINT16              VariableOffsetBase;

  CallbackData->BmmAskSaveOrNot = TRUE;

  UpdatePageStart (CallbackData);

  ConsoleCheck       = NULL;
  QuestionIdBase     = 0;
  VariableOffsetBase = 0;

  switch (UpdatePageId) {
  case FORM_CON_IN_ID:
    ConsoleCheck       = &CallbackData->BmmFakeNvData.ConsoleInCheck[0];
    QuestionIdBase     = CON_IN_DEVICE_QUESTION_ID;
    VariableOffsetBase = CON_IN_DEVICE_VAR_OFFSET;
    break;

  case FORM_CON_OUT_ID:
    ConsoleCheck       = &CallbackData->BmmFakeNvData.ConsoleOutCheck[0];
    QuestionIdBase     = CON_OUT_DEVICE_QUESTION_ID;
    VariableOffsetBase = CON_OUT_DEVICE_VAR_OFFSET;
    break;

  case FORM_CON_ERR_ID:
    ConsoleCheck       = &CallbackData->BmmFakeNvData.ConsoleErrCheck[0];
    QuestionIdBase     = CON_ERR_DEVICE_QUESTION_ID;
    VariableOffsetBase = CON_ERR_DEVICE_VAR_OFFSET;
    break;
  }
  ASSERT (ConsoleCheck != NULL);

  for (Index = 0; ((Index < ConsoleMenu->MenuNumber) && \
       (Index < MAX_MENU_NUMBER)) ; Index++) {
    CheckFlags = 0;
    NewMenuEntry = BOpt_GetMenuEntry (ConsoleMenu, Index);
    NewConsoleContext = (BM_CONSOLE_CONTEXT *) NewMenuEntry->VariableContext;
    if (NewConsoleContext->IsActive) {
      CheckFlags |= EFI_IFR_CHECKBOX_DEFAULT;
      ConsoleCheck[Index] = TRUE;
    } else {
      ConsoleCheck[Index] = FALSE;
    }
    HiiCreateCheckBoxOpCode (
      mStartOpCodeHandle,
      (EFI_QUESTION_ID) (QuestionIdBase + Index),
      VARSTORE_ID_BOOT_MAINT,
      (UINT16) (VariableOffsetBase + Index),
      NewMenuEntry->DisplayStringToken,
      NewMenuEntry->HelpStringToken,
      EFI_IFR_FLAG_CALLBACK,
      CheckFlags,
      NULL
      );
  }

  for (Index2 = 0; ((Index2 < TerminalMenu.MenuNumber) && \
       (Index2 < MAX_MENU_NUMBER)); Index2++) {
    CheckFlags          = 0;
    NewMenuEntry        = BOpt_GetMenuEntry (&TerminalMenu, Index2);
    NewTerminalContext  = (BM_TERMINAL_CONTEXT *) NewMenuEntry->VariableContext;

    ASSERT (Index < MAX_MENU_NUMBER);
    if (((NewTerminalContext->IsConIn != 0) && (UpdatePageId == FORM_CON_IN_ID)) ||
        ((NewTerminalContext->IsConOut != 0) && (UpdatePageId == FORM_CON_OUT_ID)) ||
        ((NewTerminalContext->IsStdErr != 0) && (UpdatePageId == FORM_CON_ERR_ID))
        ) {
      CheckFlags |= EFI_IFR_CHECKBOX_DEFAULT;
      ConsoleCheck[Index] = TRUE;
    } else {
      ConsoleCheck[Index] = FALSE;
    }
    HiiCreateCheckBoxOpCode (
      mStartOpCodeHandle,
      (EFI_QUESTION_ID) (QuestionIdBase + Index),
      VARSTORE_ID_BOOT_MAINT,
      (UINT16) (VariableOffsetBase + Index),
      NewMenuEntry->DisplayStringToken,
      NewMenuEntry->HelpStringToken,
      EFI_IFR_FLAG_CALLBACK,
      CheckFlags,
      NULL
      );

    Index++;
  }

  UpdatePageEnd (CallbackData);
}

/**
  Update the page's NV Map if user has changed the order
  a list. This list can be Boot Order or Driver Order.

  @param UpdatePageId    The form ID to be updated.
  @param OptionMenu      The new list.
  @param CallbackData    The BMM context data.

**/
VOID
UpdateOrderPage (
  IN UINT16                           UpdatePageId,
  IN BM_MENU_OPTION                   *OptionMenu,
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  BM_MENU_ENTRY     *NewMenuEntry;
  UINT16            Index;
  UINT16            OptionIndex;
  VOID              *OptionsOpCodeHandle;
  BOOLEAN           BootOptionFound;
  UINT32            *OptionOrder;
  EFI_QUESTION_ID   QuestionId;
  UINT16            VarOffset;

  CallbackData->BmmAskSaveOrNot = TRUE;
  UpdatePageStart (CallbackData);

  OptionOrder = NULL;
  QuestionId = 0;
  VarOffset = 0;
  switch (UpdatePageId) {

  case FORM_BOOT_CHG_ID:
    //
    // If the BootOptionOrder in the BmmFakeNvData are same with the date in the BmmOldFakeNVData,
    // means all Boot Options has been save in BootOptionMenu, we can get the date from the menu.
    // else means browser maintains some uncommitted date which are not saved in BootOptionMenu,
    // so we should not get the data from BootOptionMenu to show it.
    //
    if (CompareMem (CallbackData->BmmFakeNvData.BootOptionOrder, CallbackData->BmmOldFakeNVData.BootOptionOrder, sizeof (CallbackData->BmmFakeNvData.BootOptionOrder)) == 0) {
      GetBootOrder (CallbackData);
    }
    OptionOrder = CallbackData->BmmFakeNvData.BootOptionOrder;
    QuestionId = BOOT_OPTION_ORDER_QUESTION_ID;
    VarOffset = BOOT_OPTION_ORDER_VAR_OFFSET;
    break;

  case FORM_DRV_CHG_ID:
    //
    // If the DriverOptionOrder in the BmmFakeNvData are same with the date in the BmmOldFakeNVData,
    // means all Driver Options has been save in DriverOptionMenu, we can get the DriverOptionOrder from the menu.
    // else means browser maintains some uncommitted date which are not saved in DriverOptionMenu,
    // so we should not get the data from DriverOptionMenu to show it.
    //
    if (CompareMem (CallbackData->BmmFakeNvData.DriverOptionOrder, CallbackData->BmmOldFakeNVData.DriverOptionOrder, sizeof (CallbackData->BmmFakeNvData.DriverOptionOrder)) == 0) {
      GetDriverOrder (CallbackData);
    }
    OptionOrder = CallbackData->BmmFakeNvData.DriverOptionOrder;
    QuestionId = DRIVER_OPTION_ORDER_QUESTION_ID;
    VarOffset = DRIVER_OPTION_ORDER_VAR_OFFSET;
    break;
  }
  ASSERT (OptionOrder != NULL);

  OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();
  ASSERT (OptionsOpCodeHandle != NULL);

  NewMenuEntry = NULL;
  for (OptionIndex = 0; (OptionOrder[OptionIndex] != 0 && OptionIndex < MAX_MENU_NUMBER); OptionIndex++) {
    BootOptionFound = FALSE;
    for (Index = 0; Index < OptionMenu->MenuNumber; Index++) {
      NewMenuEntry   = BOpt_GetMenuEntry (OptionMenu, Index);
      if ((UINT32) (NewMenuEntry->OptionNumber + 1) == OptionOrder[OptionIndex]) {
        BootOptionFound = TRUE;
        break;
      }
    }
    if (BootOptionFound) {
      HiiCreateOneOfOptionOpCode (
        OptionsOpCodeHandle,
        NewMenuEntry->DisplayStringToken,
        0,
        EFI_IFR_TYPE_NUM_SIZE_32,
        OptionOrder[OptionIndex]
        );
    }
  }

  if (OptionMenu->MenuNumber > 0) {
    HiiCreateOrderedListOpCode (
      mStartOpCodeHandle,                          // Container for dynamic created opcodes
      QuestionId,                                  // Question ID
      VARSTORE_ID_BOOT_MAINT,                      // VarStore ID
      VarOffset,                                   // Offset in Buffer Storage
      STRING_TOKEN (STR_CHANGE_ORDER),             // Question prompt text
      STRING_TOKEN (STR_CHANGE_ORDER),             // Question help text
      0,                                           // Question flag
      0,                                           // Ordered list flag, e.g. EFI_IFR_UNIQUE_SET
      EFI_IFR_TYPE_NUM_SIZE_32,                    // Data type of Question value
      100,                                         // Maximum container
      OptionsOpCodeHandle,                         // Option Opcode list
      NULL                                         // Default Opcode is NULL
      );
  }

  HiiFreeOpCodeHandle (OptionsOpCodeHandle);

  UpdatePageEnd (CallbackData);

}

/**
  Refresh the text mode page.

  @param CallbackData    The BMM context data.

**/
VOID
UpdateConModePage (
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  UINTN                         Mode;
  UINTN                         Index;
  UINTN                         Col;
  UINTN                         Row;
  CHAR16                        ModeString[50];
  CHAR16                        *PStr;
  UINTN                         MaxMode;
  UINTN                         ValidMode;
  EFI_STRING_ID                 *ModeToken;
  EFI_STATUS                    Status;
  VOID                          *OptionsOpCodeHandle;
  EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL  *ConOut;

  ConOut    = gST->ConOut;
  Index     = 0;
  ValidMode = 0;
  MaxMode   = (UINTN) (ConOut->Mode->MaxMode);

  CallbackData->BmmAskSaveOrNot = TRUE;

  UpdatePageStart (CallbackData);

  //
  // Check valid mode
  //
  for (Mode = 0; Mode < MaxMode; Mode++) {
    Status = ConOut->QueryMode (ConOut, Mode, &Col, &Row);
    if (EFI_ERROR (Status)) {
      continue;
    }
    ValidMode++;
  }

  if (ValidMode == 0) {
    return;
  }

  OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();
  ASSERT (OptionsOpCodeHandle != NULL);

  ModeToken           = AllocateZeroPool (sizeof (EFI_STRING_ID) * ValidMode);
  ASSERT(ModeToken != NULL);

  //
  // Determin which mode should be the first entry in menu
  //
  GetConsoleOutMode (CallbackData);

  //
  // Build text mode options
  //
  for (Mode = 0; Mode < MaxMode; Mode++) {
    Status = ConOut->QueryMode (ConOut, Mode, &Col, &Row);
    if (EFI_ERROR (Status)) {
      continue;
    }

    //
    // Build mode string Column x Row
    //
    UnicodeValueToStringS (ModeString, sizeof (ModeString), 0, Col, 0);
    PStr = &ModeString[0];
    StrnCatS (PStr, ARRAY_SIZE (ModeString), L" x ", StrLen(L" x ") + 1);
    PStr = PStr + StrLen (PStr);
    UnicodeValueToStringS (
      PStr,
      sizeof (ModeString) - ((UINTN)PStr - (UINTN)&ModeString[0]),
      0,
      Row,
      0
      );

    ModeToken[Index] = HiiSetString (CallbackData->BmmHiiHandle, 0, ModeString, NULL);

    if (Mode == CallbackData->BmmFakeNvData.ConsoleOutMode) {
      HiiCreateOneOfOptionOpCode (
        OptionsOpCodeHandle,
        ModeToken[Index],
        EFI_IFR_OPTION_DEFAULT,
        EFI_IFR_TYPE_NUM_SIZE_16,
        (UINT16) Mode
        );
    } else {
      HiiCreateOneOfOptionOpCode (
        OptionsOpCodeHandle,
        ModeToken[Index],
        0,
        EFI_IFR_TYPE_NUM_SIZE_16,
        (UINT16) Mode
        );
    }
    Index++;
  }

  HiiCreateOneOfOpCode (
    mStartOpCodeHandle,
    (EFI_QUESTION_ID) CON_MODE_QUESTION_ID,
    VARSTORE_ID_BOOT_MAINT,
    CON_MODE_VAR_OFFSET,
    STRING_TOKEN (STR_CON_MODE_SETUP),
    STRING_TOKEN (STR_CON_MODE_SETUP),
    EFI_IFR_FLAG_RESET_REQUIRED,
    EFI_IFR_NUMERIC_SIZE_2,
    OptionsOpCodeHandle,
    NULL
    );

  HiiFreeOpCodeHandle (OptionsOpCodeHandle);
  FreePool (ModeToken);

  UpdatePageEnd (CallbackData);
}

 /**
  Create the dynamic page which allows user to set the property such as Baud Rate, Data Bits,
  Parity, Stop Bits, Terminal Type.

  @param CallbackData    The BMM context data.

**/
VOID
UpdateTerminalPage (
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  UINT8               Index;
  UINT8               CheckFlags;
  BM_MENU_ENTRY       *NewMenuEntry;
  VOID                *OptionsOpCodeHandle;
  UINTN               CurrentTerminal;

  CallbackData->BmmAskSaveOrNot = TRUE;

  UpdatePageStart (CallbackData);

  CurrentTerminal = CallbackData->CurrentTerminal;
  NewMenuEntry = BOpt_GetMenuEntry (
                  &TerminalMenu,
                  CurrentTerminal
                  );

  if (NewMenuEntry == NULL) {
    return ;
  }

  OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();
  ASSERT (OptionsOpCodeHandle != NULL);

  for (Index = 0; Index < sizeof (BaudRateList) / sizeof (BaudRateList [0]); Index++) {
    CheckFlags = 0;
    if (BaudRateList[Index].Value == 115200) {
      CheckFlags |= EFI_IFR_OPTION_DEFAULT;
    }
    HiiCreateOneOfOptionOpCode (
      OptionsOpCodeHandle,
      BaudRateList[Index].StringToken,
      CheckFlags,
      EFI_IFR_TYPE_NUM_SIZE_8,
      Index
      );
  }

  HiiCreateOneOfOpCode (
    mStartOpCodeHandle,
    (EFI_QUESTION_ID) (COM_BAUD_RATE_QUESTION_ID + CurrentTerminal),
    VARSTORE_ID_BOOT_MAINT,
    (UINT16) (COM_BAUD_RATE_VAR_OFFSET + CurrentTerminal),
    STRING_TOKEN (STR_COM_BAUD_RATE),
    STRING_TOKEN (STR_COM_BAUD_RATE),
    EFI_IFR_FLAG_CALLBACK,
    EFI_IFR_NUMERIC_SIZE_1,
    OptionsOpCodeHandle,
    NULL
    );

  HiiFreeOpCodeHandle (OptionsOpCodeHandle);
  OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();
  ASSERT (OptionsOpCodeHandle != NULL);

  for (Index = 0; Index < ARRAY_SIZE (DataBitsList); Index++) {
    CheckFlags = 0;

    if (DataBitsList[Index].Value == 8) {
      CheckFlags |= EFI_IFR_OPTION_DEFAULT;
    }

    HiiCreateOneOfOptionOpCode (
      OptionsOpCodeHandle,
      DataBitsList[Index].StringToken,
      CheckFlags,
      EFI_IFR_TYPE_NUM_SIZE_8,
      Index
      );
  }

  HiiCreateOneOfOpCode (
    mStartOpCodeHandle,
    (EFI_QUESTION_ID) (COM_DATA_RATE_QUESTION_ID + CurrentTerminal),
    VARSTORE_ID_BOOT_MAINT,
    (UINT16) (COM_DATA_RATE_VAR_OFFSET + CurrentTerminal),
    STRING_TOKEN (STR_COM_DATA_BITS),
    STRING_TOKEN (STR_COM_DATA_BITS),
    EFI_IFR_FLAG_CALLBACK,
    EFI_IFR_NUMERIC_SIZE_1,
    OptionsOpCodeHandle,
    NULL
    );

  HiiFreeOpCodeHandle (OptionsOpCodeHandle);
  OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();
  ASSERT (OptionsOpCodeHandle != NULL);

  for (Index = 0; Index < ARRAY_SIZE (ParityList); Index++) {
    CheckFlags = 0;
    if (ParityList[Index].Value ==  NoParity) {
      CheckFlags |= EFI_IFR_OPTION_DEFAULT;
    }

    HiiCreateOneOfOptionOpCode (
      OptionsOpCodeHandle,
      ParityList[Index].StringToken,
      CheckFlags,
      EFI_IFR_TYPE_NUM_SIZE_8,
      Index
      );
  }

  HiiCreateOneOfOpCode (
    mStartOpCodeHandle,
    (EFI_QUESTION_ID) (COM_PARITY_QUESTION_ID + CurrentTerminal),
    VARSTORE_ID_BOOT_MAINT,
    (UINT16) (COM_PARITY_VAR_OFFSET + CurrentTerminal),
    STRING_TOKEN (STR_COM_PARITY),
    STRING_TOKEN (STR_COM_PARITY),
    EFI_IFR_FLAG_CALLBACK,
    EFI_IFR_NUMERIC_SIZE_1,
    OptionsOpCodeHandle,
    NULL
    );

  HiiFreeOpCodeHandle (OptionsOpCodeHandle);
  OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();
  ASSERT (OptionsOpCodeHandle != NULL);

  for (Index = 0; Index < ARRAY_SIZE (StopBitsList); Index++) {
    CheckFlags = 0;
    if (StopBitsList[Index].Value == OneStopBit) {
      CheckFlags |= EFI_IFR_OPTION_DEFAULT;
    }

    HiiCreateOneOfOptionOpCode (
      OptionsOpCodeHandle,
      StopBitsList[Index].StringToken,
      CheckFlags,
      EFI_IFR_TYPE_NUM_SIZE_8,
      Index
      );
  }

  HiiCreateOneOfOpCode (
    mStartOpCodeHandle,
    (EFI_QUESTION_ID) (COM_STOP_BITS_QUESTION_ID + CurrentTerminal),
    VARSTORE_ID_BOOT_MAINT,
    (UINT16) (COM_STOP_BITS_VAR_OFFSET + CurrentTerminal),
    STRING_TOKEN (STR_COM_STOP_BITS),
    STRING_TOKEN (STR_COM_STOP_BITS),
    EFI_IFR_FLAG_CALLBACK,
    EFI_IFR_NUMERIC_SIZE_1,
    OptionsOpCodeHandle,
    NULL
    );

  HiiFreeOpCodeHandle (OptionsOpCodeHandle);
  OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();
  ASSERT (OptionsOpCodeHandle != NULL);

  for (Index = 0; Index < ARRAY_SIZE (TerminalType); Index++) {
    CheckFlags = 0;
    if (Index == 0) {
      CheckFlags |= EFI_IFR_OPTION_DEFAULT;
    }

    HiiCreateOneOfOptionOpCode (
      OptionsOpCodeHandle,
      (EFI_STRING_ID) TerminalType[Index],
      CheckFlags,
      EFI_IFR_TYPE_NUM_SIZE_8,
      Index
      );
  }

  HiiCreateOneOfOpCode (
    mStartOpCodeHandle,
    (EFI_QUESTION_ID) (COM_TERMINAL_QUESTION_ID + CurrentTerminal),
    VARSTORE_ID_BOOT_MAINT,
    (UINT16) (COM_TERMINAL_VAR_OFFSET + CurrentTerminal),
    STRING_TOKEN (STR_COM_TERMI_TYPE),
    STRING_TOKEN (STR_COM_TERMI_TYPE),
    EFI_IFR_FLAG_CALLBACK,
    EFI_IFR_NUMERIC_SIZE_1,
    OptionsOpCodeHandle,
    NULL
    );

  HiiFreeOpCodeHandle (OptionsOpCodeHandle);
  OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();
  ASSERT (OptionsOpCodeHandle != NULL);

  for (Index = 0; Index < ARRAY_SIZE (mFlowControlType); Index++) {
  CheckFlags = 0;
    if (Index == 0) {
      CheckFlags |= EFI_IFR_OPTION_DEFAULT;
    }
    HiiCreateOneOfOptionOpCode (
      OptionsOpCodeHandle,
      (EFI_STRING_ID) mFlowControlType[Index],
      CheckFlags,
      EFI_IFR_TYPE_NUM_SIZE_8,
      mFlowControlValue[Index]
      );
  }

  HiiCreateOneOfOpCode (
    mStartOpCodeHandle,
    (EFI_QUESTION_ID) (COM_FLOWCONTROL_QUESTION_ID + CurrentTerminal),
    VARSTORE_ID_BOOT_MAINT,
    (UINT16) (COM_FLOWCONTROL_VAR_OFFSET + CurrentTerminal),
    STRING_TOKEN (STR_COM_FLOW_CONTROL),
    STRING_TOKEN (STR_COM_FLOW_CONTROL),
    EFI_IFR_FLAG_CALLBACK,
    EFI_IFR_NUMERIC_SIZE_1,
    OptionsOpCodeHandle,
    NULL
    );

  HiiFreeOpCodeHandle (OptionsOpCodeHandle);

  UpdatePageEnd (CallbackData);
}

/**
Update add boot/driver option page.

@param CallbackData    The BMM context data.
@param FormId             The form ID to be updated.
@param DevicePath       Device path.

**/
VOID
UpdateOptionPage(
  IN   BMM_CALLBACK_DATA        *CallbackData,
  IN   EFI_FORM_ID              FormId,
  IN   EFI_DEVICE_PATH_PROTOCOL *DevicePath
  )
{
  CHAR16                *String;
  EFI_STRING_ID         StringToken;

  String = NULL;

  if (DevicePath != NULL){
    String = ExtractFileNameFromDevicePath(DevicePath);
  }
  if (String == NULL) {
    String = HiiGetString (CallbackData->BmmHiiHandle, STRING_TOKEN (STR_NULL_STRING), NULL);
    ASSERT (String != NULL);
  }

  StringToken = HiiSetString (CallbackData->BmmHiiHandle, 0, String, NULL);
  FreePool (String);

  if(FormId == FORM_BOOT_ADD_ID){
    if (!CallbackData->BmmFakeNvData.BootOptionChanged) {
      ZeroMem (CallbackData->BmmFakeNvData.BootOptionalData, sizeof (CallbackData->BmmFakeNvData.BootOptionalData));
      ZeroMem (CallbackData->BmmFakeNvData.BootDescriptionData, sizeof (CallbackData->BmmFakeNvData.BootDescriptionData));
      ZeroMem (CallbackData->BmmOldFakeNVData.BootOptionalData, sizeof (CallbackData->BmmOldFakeNVData.BootOptionalData));
      ZeroMem (CallbackData->BmmOldFakeNVData.BootDescriptionData, sizeof (CallbackData->BmmOldFakeNVData.BootDescriptionData));
    }
  } else if (FormId == FORM_DRV_ADD_FILE_ID){
    if (!CallbackData->BmmFakeNvData.DriverOptionChanged) {
      ZeroMem (CallbackData->BmmFakeNvData.DriverOptionalData, sizeof (CallbackData->BmmFakeNvData.DriverOptionalData));
      ZeroMem (CallbackData->BmmFakeNvData.DriverDescriptionData, sizeof (CallbackData->BmmFakeNvData.DriverDescriptionData));
      ZeroMem (CallbackData->BmmOldFakeNVData.DriverOptionalData, sizeof (CallbackData->BmmOldFakeNVData.DriverOptionalData));
      ZeroMem (CallbackData->BmmOldFakeNVData.DriverDescriptionData, sizeof (CallbackData->BmmOldFakeNVData.DriverDescriptionData));
    }
  }

  RefreshUpdateData();
  mStartLabel->Number = FormId;

  HiiCreateSubTitleOpCode (
    mStartOpCodeHandle,
    StringToken,
    0,
    0,
    0
    );

  HiiUpdateForm (
    CallbackData->BmmHiiHandle,
    &mBootMaintGuid,
    FormId,
    mStartOpCodeHandle,// Label FormId
    mEndOpCodeHandle   // LABEL_END
    );
}

/**
  Dispatch the correct update page function to call based on
  the UpdatePageId.

  @param UpdatePageId    The form ID.
  @param CallbackData    The BMM context data.

**/
VOID
UpdatePageBody (
  IN UINT16                           UpdatePageId,
  IN BMM_CALLBACK_DATA                *CallbackData
  )
{
  CleanUpPage (UpdatePageId, CallbackData);
  switch (UpdatePageId) {
  case FORM_CON_IN_ID:
    UpdateConsolePage (UpdatePageId, &ConsoleInpMenu, CallbackData);
    break;

  case FORM_CON_OUT_ID:
    UpdateConsolePage (UpdatePageId, &ConsoleOutMenu, CallbackData);
    break;

  case FORM_CON_ERR_ID:
    UpdateConsolePage (UpdatePageId, &ConsoleErrMenu, CallbackData);
    break;

  case FORM_BOOT_CHG_ID:
    UpdateOrderPage (UpdatePageId, &BootOptionMenu, CallbackData);
    break;

  case FORM_DRV_CHG_ID:
    UpdateOrderPage (UpdatePageId, &DriverOptionMenu, CallbackData);
    break;

  default:
    break;
  }
}

/**
  Dispatch the display to the next page based on NewPageId.

  @param Private         The BMM context data.
  @param NewPageId       The original page ID.

**/
VOID
UpdatePageId (
  BMM_CALLBACK_DATA              *Private,
  UINT16                         NewPageId
  )
{
  if ((NewPageId < FILE_OPTION_OFFSET) && (NewPageId >= HANDLE_OPTION_OFFSET)) {
    //
    // If we select a handle to add driver option, advance to the add handle description page.
    //
    NewPageId = FORM_DRV_ADD_HANDLE_DESC_ID;
  } else if ((NewPageId == KEY_VALUE_SAVE_AND_EXIT) || (NewPageId == KEY_VALUE_NO_SAVE_AND_EXIT)) {
    //
    // Return to main page after "Save Changes" or "Discard Changes".
    //
    NewPageId = FORM_MAIN_ID;
  } else if ((NewPageId >= TERMINAL_OPTION_OFFSET) && (NewPageId < CONSOLE_OPTION_OFFSET)) {
    NewPageId = FORM_CON_COM_SETUP_ID;
  }

  if ((NewPageId > 0) && (NewPageId < MAXIMUM_FORM_ID)) {
    Private->BmmPreviousPageId  = Private->BmmCurrentPageId;
    Private->BmmCurrentPageId   = NewPageId;
  }
}