UEFI HII: Merge UEFI HII support changes from branch.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4599 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qwang12
788
MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c
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788
MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c
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@@ -0,0 +1,788 @@
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/** @file
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Copyright (c) 2004 - 2007, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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DriverSample.c
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Abstract:
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This is an example of how a driver might export data to the HII protocol to be
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later utilized by the Setup Protocol
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**/
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#include "DriverSample.h"
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#define DISPLAY_ONLY_MY_ITEM 0x0002
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EFI_GUID mFormSetGuid = FORMSET_GUID;
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EFI_GUID mInventoryGuid = INVENTORY_GUID;
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CHAR16 VariableName[] = L"MyIfrNVData";
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VOID
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EncodePassword (
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IN CHAR16 *Password,
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IN UINT8 MaxSize
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)
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{
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UINTN Index;
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UINTN Loop;
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CHAR16 *Buffer;
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CHAR16 *Key;
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Key = L"MAR10648567";
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Buffer = AllocateZeroPool (MaxSize);
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ASSERT (Buffer != NULL);
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for (Index = 0; Key[Index] != 0; Index++) {
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for (Loop = 0; Loop < (UINT8) (MaxSize / 2); Loop++) {
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Buffer[Loop] = (CHAR16) (Password[Loop] ^ Key[Index]);
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}
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}
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CopyMem (Password, Buffer, MaxSize);
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gBS->FreePool (Buffer);
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return ;
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}
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EFI_STATUS
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ValidatePassword (
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DRIVER_SAMPLE_PRIVATE_DATA *PrivateData,
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EFI_STRING_ID StringId
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)
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{
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EFI_STATUS Status;
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UINTN Index;
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UINTN BufferSize;
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CHAR16 *Password;
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CHAR16 *EncodedPassword;
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BOOLEAN OldPassword;
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//
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// Get encoded password first
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//
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BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
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Status = gRT->GetVariable (
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VariableName,
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&mFormSetGuid,
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NULL,
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&BufferSize,
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&PrivateData->Configuration
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);
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if (EFI_ERROR (Status)) {
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//
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// Old password not exist, prompt for new password
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//
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return EFI_SUCCESS;
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}
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OldPassword = FALSE;
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//
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// Check whether we have any old password set
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//
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for (Index = 0; Index < 20; Index++) {
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if (PrivateData->Configuration.WhatIsThePassword2[Index] != 0) {
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OldPassword = TRUE;
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break;
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}
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}
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if (!OldPassword) {
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//
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// Old password not exist, return EFI_SUCCESS to prompt for new password
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//
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return EFI_SUCCESS;
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}
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//
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// Get user input password
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//
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BufferSize = 21 * sizeof (CHAR16);
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Password = AllocateZeroPool (BufferSize);
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ASSERT (Password != NULL);
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Status = IfrLibGetString (PrivateData->HiiHandle[0], StringId, Password, &BufferSize);
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if (EFI_ERROR (Status)) {
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gBS->FreePool (Password);
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return Status;
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}
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//
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// Validate old password
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//
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EncodedPassword = AllocateCopyPool (21 * sizeof (CHAR16), Password);
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ASSERT (EncodedPassword != NULL);
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EncodePassword (EncodedPassword, 20 * sizeof (CHAR16));
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if (CompareMem (EncodedPassword, PrivateData->Configuration.WhatIsThePassword2, 20 * sizeof (CHAR16)) != 0) {
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//
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// Old password mismatch, return EFI_NOT_READY to prompt for error message
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//
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Status = EFI_NOT_READY;
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} else {
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Status = EFI_SUCCESS;
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}
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gBS->FreePool (Password);
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gBS->FreePool (EncodedPassword);
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return Status;
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}
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EFI_STATUS
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SetPassword (
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DRIVER_SAMPLE_PRIVATE_DATA *PrivateData,
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EFI_STRING_ID StringId
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)
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{
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EFI_STATUS Status;
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UINTN BufferSize;
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CHAR16 *Password;
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DRIVER_SAMPLE_CONFIGURATION *Configuration;
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//
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// Get Buffer Storage data from EFI variable
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//
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BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
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Status = gRT->GetVariable (
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VariableName,
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&mFormSetGuid,
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NULL,
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&BufferSize,
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&PrivateData->Configuration
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Get user input password
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//
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Password = &PrivateData->Configuration.WhatIsThePassword2[0];
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ZeroMem (Password, 20 * sizeof (CHAR16));
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Status = IfrLibGetString (PrivateData->HiiHandle[0], StringId, Password, &BufferSize);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Retrive uncommitted data from Browser
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//
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BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
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Configuration = AllocateZeroPool (sizeof (DRIVER_SAMPLE_PRIVATE_DATA));
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ASSERT (Configuration != NULL);
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Status = GetBrowserData (&mFormSetGuid, VariableName, &BufferSize, (UINT8 *) Configuration);
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if (!EFI_ERROR (Status)) {
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//
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// Update password's clear text in the screen
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//
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CopyMem (Configuration->PasswordClearText, Password, 20 * sizeof (CHAR16));
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//
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// Update uncommitted data of Browser
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//
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BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
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Status = SetBrowserData (
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&mFormSetGuid,
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VariableName,
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BufferSize,
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(UINT8 *) Configuration,
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NULL
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);
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}
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gBS->FreePool (Configuration);
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//
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// Set password
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//
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EncodePassword (Password, 20 * sizeof (CHAR16));
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Status = gRT->SetVariable(
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VariableName,
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&mFormSetGuid,
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EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
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sizeof (DRIVER_SAMPLE_CONFIGURATION),
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&PrivateData->Configuration
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);
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return Status;
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}
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/**
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This function allows a caller to extract the current configuration for one
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or more named elements from the target driver.
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@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
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@param Request A null-terminated Unicode string in
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<ConfigRequest> format.
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@param Progress On return, points to a character in the Request
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string. Points to the string's null terminator if
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request was successful. Points to the most recent
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'&' before the first failing name/value pair (or
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the beginning of the string if the failure is in
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the first name/value pair) if the request was not
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successful.
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@param Results A null-terminated Unicode string in
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<ConfigAltResp> format which has all values filled
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in for the names in the Request string. String to
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be allocated by the called function.
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@retval EFI_SUCCESS The Results is filled with the requested values.
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@retval EFI_OUT_OF_RESOURCES Not enough memory to store the results.
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@retval EFI_INVALID_PARAMETER Request is NULL, illegal syntax, or unknown name.
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@retval EFI_NOT_FOUND Routing data doesn't match any storage in this
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driver.
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**/
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EFI_STATUS
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EFIAPI
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ExtractConfig (
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IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
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IN CONST EFI_STRING Request,
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OUT EFI_STRING *Progress,
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OUT EFI_STRING *Results
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)
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{
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EFI_STATUS Status;
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UINTN BufferSize;
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DRIVER_SAMPLE_PRIVATE_DATA *PrivateData;
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EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;
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PrivateData = DRIVER_SAMPLE_PRIVATE_FROM_THIS (This);
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HiiConfigRouting = PrivateData->HiiConfigRouting;
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//
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// Get Buffer Storage data from EFI variable
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//
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BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
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Status = gRT->GetVariable (
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VariableName,
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&mFormSetGuid,
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NULL,
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&BufferSize,
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&PrivateData->Configuration
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Convert buffer data to <ConfigResp> by helper function BlockToConfig()
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//
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Status = HiiConfigRouting->BlockToConfig (
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HiiConfigRouting,
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Request,
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(UINT8 *) &PrivateData->Configuration,
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BufferSize,
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Results,
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Progress
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);
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return Status;
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}
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/**
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This function processes the results of changes in configuration.
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@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
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@param Configuration A null-terminated Unicode string in <ConfigResp>
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format.
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@param Progress A pointer to a string filled in with the offset of
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the most recent '&' before the first failing
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name/value pair (or the beginning of the string if
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the failure is in the first name/value pair) or
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the terminating NULL if all was successful.
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@retval EFI_SUCCESS The Results is processed successfully.
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@retval EFI_INVALID_PARAMETER Configuration is NULL.
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@retval EFI_NOT_FOUND Routing data doesn't match any storage in this
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driver.
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**/
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EFI_STATUS
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EFIAPI
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RouteConfig (
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IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
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IN CONST EFI_STRING Configuration,
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OUT EFI_STRING *Progress
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)
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{
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EFI_STATUS Status;
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UINTN BufferSize;
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DRIVER_SAMPLE_PRIVATE_DATA *PrivateData;
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EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;
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PrivateData = DRIVER_SAMPLE_PRIVATE_FROM_THIS (This);
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HiiConfigRouting = PrivateData->HiiConfigRouting;
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//
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// Get Buffer Storage data from EFI variable
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//
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BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
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Status = gRT->GetVariable (
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VariableName,
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&mFormSetGuid,
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NULL,
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&BufferSize,
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&PrivateData->Configuration
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Convert <ConfigResp> to buffer data by helper function ConfigToBlock()
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//
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BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
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Status = HiiConfigRouting->ConfigToBlock (
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HiiConfigRouting,
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Configuration,
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(UINT8 *) &PrivateData->Configuration,
|
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&BufferSize,
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Progress
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||||
);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Store Buffer Storage back to EFI variable
|
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//
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Status = gRT->SetVariable(
|
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VariableName,
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&mFormSetGuid,
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EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
|
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sizeof (DRIVER_SAMPLE_CONFIGURATION),
|
||||
&PrivateData->Configuration
|
||||
);
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return Status;
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}
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|
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|
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/**
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This function processes the results of changes in configuration.
|
||||
|
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@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
|
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@param Action Specifies the type of action taken by the browser.
|
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@param QuestionId A unique value which is sent to the original
|
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exporting driver so that it can identify the type
|
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of data to expect.
|
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@param Type The type of value for the question.
|
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@param Value A pointer to the data being sent to the original
|
||||
exporting driver.
|
||||
@param ActionRequest On return, points to the action requested by the
|
||||
callback function.
|
||||
|
||||
@retval EFI_SUCCESS The callback successfully handled the action.
|
||||
@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the
|
||||
variable and its data.
|
||||
@retval EFI_DEVICE_ERROR The variable could not be saved.
|
||||
@retval EFI_UNSUPPORTED The specified Action is not supported by the
|
||||
callback.
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
DriverCallback (
|
||||
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
|
||||
IN EFI_BROWSER_ACTION Action,
|
||||
IN EFI_QUESTION_ID QuestionId,
|
||||
IN UINT8 Type,
|
||||
IN EFI_IFR_TYPE_VALUE *Value,
|
||||
OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
|
||||
)
|
||||
{
|
||||
DRIVER_SAMPLE_PRIVATE_DATA *PrivateData;
|
||||
EFI_STATUS Status;
|
||||
EFI_HII_UPDATE_DATA UpdateData;
|
||||
IFR_OPTION *IfrOptionList;
|
||||
|
||||
if ((Value == NULL) || (ActionRequest == NULL)) {
|
||||
return EFI_INVALID_PARAMETER;
|
||||
}
|
||||
|
||||
Status = EFI_SUCCESS;
|
||||
PrivateData = DRIVER_SAMPLE_PRIVATE_FROM_THIS (This);
|
||||
|
||||
switch (QuestionId) {
|
||||
case 0x1234:
|
||||
//
|
||||
// Create dynamic page for this interactive goto
|
||||
//
|
||||
UpdateData.BufferSize = 0x1000;
|
||||
UpdateData.Offset = 0;
|
||||
UpdateData.Data = AllocatePool (0x1000);
|
||||
ASSERT (UpdateData.Data != NULL);
|
||||
|
||||
IfrOptionList = AllocatePool (2 * sizeof (IFR_OPTION));
|
||||
ASSERT (IfrOptionList != NULL);
|
||||
|
||||
IfrOptionList[0].Flags = 0;
|
||||
IfrOptionList[0].StringToken = STRING_TOKEN (STR_BOOT_OPTION1);
|
||||
IfrOptionList[0].Value.u8 = 1;
|
||||
IfrOptionList[1].Flags = EFI_IFR_OPTION_DEFAULT;
|
||||
IfrOptionList[1].StringToken = STRING_TOKEN (STR_BOOT_OPTION2);
|
||||
IfrOptionList[1].Value.u8 = 2;
|
||||
|
||||
CreateActionOpCode (
|
||||
0x1237,
|
||||
STRING_TOKEN(STR_EXIT_TEXT),
|
||||
STRING_TOKEN(STR_EXIT_TEXT),
|
||||
EFI_IFR_FLAG_CALLBACK,
|
||||
0,
|
||||
&UpdateData
|
||||
);
|
||||
|
||||
CreateOneOfOpCode (
|
||||
0x8001,
|
||||
0,
|
||||
0,
|
||||
STRING_TOKEN (STR_ONE_OF_PROMPT),
|
||||
STRING_TOKEN (STR_ONE_OF_HELP),
|
||||
EFI_IFR_FLAG_CALLBACK,
|
||||
EFI_IFR_NUMERIC_SIZE_1,
|
||||
IfrOptionList,
|
||||
2,
|
||||
&UpdateData
|
||||
);
|
||||
|
||||
CreateOrderedListOpCode (
|
||||
0x8002,
|
||||
0,
|
||||
0,
|
||||
STRING_TOKEN (STR_BOOT_OPTIONS),
|
||||
STRING_TOKEN (STR_BOOT_OPTIONS),
|
||||
EFI_IFR_FLAG_RESET_REQUIRED,
|
||||
0,
|
||||
EFI_IFR_NUMERIC_SIZE_1,
|
||||
10,
|
||||
IfrOptionList,
|
||||
2,
|
||||
&UpdateData
|
||||
);
|
||||
|
||||
CreateGotoOpCode (
|
||||
1,
|
||||
STRING_TOKEN (STR_GOTO_FORM1),
|
||||
STRING_TOKEN (STR_GOTO_HELP),
|
||||
0,
|
||||
0x8003,
|
||||
&UpdateData
|
||||
);
|
||||
|
||||
Status = IfrLibUpdateForm (
|
||||
PrivateData->HiiHandle[0],
|
||||
&mFormSetGuid,
|
||||
0x1234,
|
||||
0x1234,
|
||||
TRUE,
|
||||
&UpdateData
|
||||
);
|
||||
gBS->FreePool (IfrOptionList);
|
||||
gBS->FreePool (UpdateData.Data);
|
||||
break;
|
||||
|
||||
case 0x1237:
|
||||
//
|
||||
// User press "Exit now", request Browser to exit
|
||||
//
|
||||
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
|
||||
break;
|
||||
|
||||
case 0x1238:
|
||||
//
|
||||
// User press "Save now", request Browser to save the uncommitted data.
|
||||
//
|
||||
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_SUBMIT;
|
||||
break;
|
||||
|
||||
case 0x2000:
|
||||
//
|
||||
// When try to set a new password, user will be chanlleged with old password.
|
||||
// The Callback is responsible for validating old password input by user,
|
||||
// If Callback return EFI_SUCCESS, it indicates validation pass.
|
||||
//
|
||||
switch (PrivateData->PasswordState) {
|
||||
case BROWSER_STATE_VALIDATE_PASSWORD:
|
||||
Status = ValidatePassword (PrivateData, Value->string);
|
||||
if (Status == EFI_SUCCESS) {
|
||||
PrivateData->PasswordState = BROWSER_STATE_SET_PASSWORD;
|
||||
}
|
||||
break;
|
||||
|
||||
case BROWSER_STATE_SET_PASSWORD:
|
||||
Status = SetPassword (PrivateData, Value->string);
|
||||
PrivateData->PasswordState = BROWSER_STATE_VALIDATE_PASSWORD;
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return Status;
|
||||
}
|
||||
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
DriverSampleInit (
|
||||
IN EFI_HANDLE ImageHandle,
|
||||
IN EFI_SYSTEM_TABLE *SystemTable
|
||||
)
|
||||
{
|
||||
EFI_STATUS Status;
|
||||
EFI_STATUS SavedStatus;
|
||||
EFI_HII_PACKAGE_LIST_HEADER *PackageList;
|
||||
EFI_HII_HANDLE HiiHandle[2];
|
||||
EFI_HANDLE DriverHandle[2];
|
||||
DRIVER_SAMPLE_PRIVATE_DATA *PrivateData;
|
||||
EFI_SCREEN_DESCRIPTOR Screen;
|
||||
EFI_HII_DATABASE_PROTOCOL *HiiDatabase;
|
||||
EFI_HII_STRING_PROTOCOL *HiiString;
|
||||
EFI_FORM_BROWSER2_PROTOCOL *FormBrowser2;
|
||||
EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;
|
||||
CHAR16 *NewString;
|
||||
UINTN BufferSize;
|
||||
DRIVER_SAMPLE_CONFIGURATION *Configuration;
|
||||
BOOLEAN ExtractIfrDefault;
|
||||
|
||||
//
|
||||
// Initialize the library and our protocol.
|
||||
//
|
||||
//@MT: EfiInitializeDriverLib (ImageHandle, SystemTable);
|
||||
|
||||
//
|
||||
// Initialize screen dimensions for SendForm().
|
||||
// Remove 3 characters from top and bottom
|
||||
//
|
||||
ZeroMem (&Screen, sizeof (EFI_SCREEN_DESCRIPTOR));
|
||||
gST->ConOut->QueryMode (gST->ConOut, gST->ConOut->Mode->Mode, &Screen.RightColumn, &Screen.BottomRow);
|
||||
|
||||
Screen.TopRow = 3;
|
||||
Screen.BottomRow = Screen.BottomRow - 3;
|
||||
|
||||
//
|
||||
// Initialize driver private data
|
||||
//
|
||||
PrivateData = AllocatePool (sizeof (DRIVER_SAMPLE_PRIVATE_DATA));
|
||||
if (PrivateData == NULL) {
|
||||
return EFI_OUT_OF_RESOURCES;
|
||||
}
|
||||
|
||||
PrivateData->Signature = DRIVER_SAMPLE_PRIVATE_SIGNATURE;
|
||||
|
||||
PrivateData->ConfigAccess.ExtractConfig = ExtractConfig;
|
||||
PrivateData->ConfigAccess.RouteConfig = RouteConfig;
|
||||
PrivateData->ConfigAccess.Callback = DriverCallback;
|
||||
PrivateData->PasswordState = BROWSER_STATE_VALIDATE_PASSWORD;
|
||||
|
||||
//
|
||||
// Locate Hii Database protocol
|
||||
//
|
||||
Status = gBS->LocateProtocol (&gEfiHiiDatabaseProtocolGuid, NULL, (VOID **) &HiiDatabase);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
PrivateData->HiiDatabase = HiiDatabase;
|
||||
|
||||
//
|
||||
// Locate HiiString protocol
|
||||
//
|
||||
Status = gBS->LocateProtocol (&gEfiHiiStringProtocolGuid, NULL, (VOID **) &HiiString);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
PrivateData->HiiString = HiiString;
|
||||
|
||||
//
|
||||
// Locate Formbrowser2 protocol
|
||||
//
|
||||
Status = gBS->LocateProtocol (&gEfiFormBrowser2ProtocolGuid, NULL, (VOID **) &FormBrowser2);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
PrivateData->FormBrowser2 = FormBrowser2;
|
||||
|
||||
//
|
||||
// Locate ConfigRouting protocol
|
||||
//
|
||||
Status = gBS->LocateProtocol (&gEfiHiiConfigRoutingProtocolGuid, NULL, (VOID **) &HiiConfigRouting);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
PrivateData->HiiConfigRouting = HiiConfigRouting;
|
||||
|
||||
//
|
||||
// Install Config Access protocol
|
||||
//
|
||||
Status = HiiLibCreateHiiDriverHandle (&DriverHandle[0]);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
PrivateData->DriverHandle[0] = DriverHandle[0];
|
||||
|
||||
Status = gBS->InstallProtocolInterface (
|
||||
&DriverHandle[0],
|
||||
&gEfiHiiConfigAccessProtocolGuid,
|
||||
EFI_NATIVE_INTERFACE,
|
||||
&PrivateData->ConfigAccess
|
||||
);
|
||||
ASSERT_EFI_ERROR (Status);
|
||||
|
||||
//
|
||||
// Publish our HII data
|
||||
//
|
||||
PackageList = PreparePackageList (
|
||||
2,
|
||||
&mFormSetGuid,
|
||||
DriverSampleStrings,
|
||||
VfrBin
|
||||
);
|
||||
if (PackageList == NULL) {
|
||||
return EFI_OUT_OF_RESOURCES;
|
||||
}
|
||||
|
||||
Status = HiiDatabase->NewPackageList (
|
||||
HiiDatabase,
|
||||
PackageList,
|
||||
DriverHandle[0],
|
||||
&HiiHandle[0]
|
||||
);
|
||||
gBS->FreePool (PackageList);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
PrivateData->HiiHandle[0] = HiiHandle[0];
|
||||
|
||||
//
|
||||
// Publish another Fromset
|
||||
//
|
||||
Status = HiiLibCreateHiiDriverHandle (&DriverHandle[1]);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
PrivateData->DriverHandle[1] = DriverHandle[1];
|
||||
|
||||
PackageList = PreparePackageList (
|
||||
2,
|
||||
&mInventoryGuid,
|
||||
DriverSampleStrings,
|
||||
InventoryBin
|
||||
);
|
||||
if (PackageList == NULL) {
|
||||
return EFI_OUT_OF_RESOURCES;
|
||||
}
|
||||
|
||||
Status = HiiDatabase->NewPackageList (
|
||||
HiiDatabase,
|
||||
PackageList,
|
||||
DriverHandle[1],
|
||||
&HiiHandle[1]
|
||||
);
|
||||
gBS->FreePool (PackageList);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
PrivateData->HiiHandle[1] = HiiHandle[1];
|
||||
|
||||
//
|
||||
// Very simple example of how one would update a string that is already
|
||||
// in the HII database
|
||||
//
|
||||
NewString = L"700 Mhz";
|
||||
|
||||
Status = IfrLibSetString (HiiHandle[0], STRING_TOKEN (STR_CPU_STRING2), NewString);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
|
||||
//
|
||||
// Initialize configuration data
|
||||
//
|
||||
Configuration = &PrivateData->Configuration;
|
||||
ZeroMem (Configuration, sizeof (DRIVER_SAMPLE_CONFIGURATION));
|
||||
|
||||
//
|
||||
// Try to read NV config EFI variable first
|
||||
//
|
||||
ExtractIfrDefault = TRUE;
|
||||
BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
|
||||
Status = gRT->GetVariable (VariableName, &mFormSetGuid, NULL, &BufferSize, Configuration);
|
||||
if (!EFI_ERROR (Status) && (BufferSize == sizeof (DRIVER_SAMPLE_CONFIGURATION))) {
|
||||
ExtractIfrDefault = FALSE;
|
||||
}
|
||||
|
||||
if (ExtractIfrDefault) {
|
||||
//
|
||||
// EFI variable for NV config doesn't exit, we should build this variable
|
||||
// based on default values stored in IFR
|
||||
//
|
||||
BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
|
||||
Status = ExtractDefault (Configuration, &BufferSize, 1, VfrMyIfrNVDataDefault0000);
|
||||
|
||||
if (!EFI_ERROR (Status)) {
|
||||
gRT->SetVariable(
|
||||
VariableName,
|
||||
&mFormSetGuid,
|
||||
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
|
||||
sizeof (DRIVER_SAMPLE_CONFIGURATION),
|
||||
Configuration
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
// Example of how to display only the item we sent to HII
|
||||
//
|
||||
if (DISPLAY_ONLY_MY_ITEM == 0x0001) {
|
||||
//
|
||||
// Have the browser pull out our copy of the data, and only display our data
|
||||
//
|
||||
// Status = FormConfig->SendForm (FormConfig, TRUE, HiiHandle, NULL, NULL, NULL, &Screen, NULL);
|
||||
//
|
||||
Status = FormBrowser2->SendForm (
|
||||
FormBrowser2,
|
||||
HiiHandle,
|
||||
1,
|
||||
NULL,
|
||||
0,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
SavedStatus = Status;
|
||||
|
||||
Status = HiiDatabase->RemovePackageList (HiiDatabase, HiiHandle[0]);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
|
||||
Status = HiiDatabase->RemovePackageList (HiiDatabase, HiiHandle[1]);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
|
||||
return SavedStatus;
|
||||
} else {
|
||||
//
|
||||
// Have the browser pull out all the data in the HII Database and display it.
|
||||
//
|
||||
// Status = FormConfig->SendForm (FormConfig, TRUE, 0, NULL, NULL, NULL, NULL, NULL);
|
||||
//
|
||||
}
|
||||
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
Reference in New Issue
Block a user