Add applications for hidden BIOS settings lesson

Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>

1 files changed, 267 insertions, 0 deletions

diff --git a/UefiLessonsPkg/HiddenSettings/HiddenSettings.c b/UefiLessonsPkg/HiddenSettings/HiddenSettings.c
new file mode 100644
index 0000000..58a23d4
--- /dev/null
+++ b/UefiLessonsPkg/HiddenSettings/HiddenSettings.c
@@ -0,0 +1,267 @@
+/*
+ * Copyright (c) 2024, Konstantin Aladyshev <aladyshev22@gmail.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <Library/BaseMemoryLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/HiiLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PrintLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiHiiServicesLib.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Protocol/HiiConfigAccess.h>
+#include "Data.h"
+
+extern UINT8 FormBin[];
+
+#pragma pack(1)
+typedef struct {
+  VENDOR_DEVICE_PATH             VendorDevicePath;
+  EFI_DEVICE_PATH_PROTOCOL       End;
+} HII_VENDOR_DEVICE_PATH;
+#pragma pack()
+
+HII_VENDOR_DEVICE_PATH  mHiiVendorDevicePath = {
+  {
+    {
+      HARDWARE_DEVICE_PATH,
+      HW_VENDOR_DP,
+      {
+        (UINT8) (sizeof (VENDOR_DEVICE_PATH)),
+        (UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
+      }
+    },
+    DATAPATH_GUID
+  },
+  {
+    END_DEVICE_PATH_TYPE,
+    END_ENTIRE_DEVICE_PATH_SUBTYPE,
+    {
+      (UINT8) (END_DEVICE_PATH_LENGTH),
+      (UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
+    }
+  }
+};
+
+EFI_HII_HANDLE  mHiiHandle = NULL;
+EFI_HANDLE      mDriverHandle = NULL;
+EFI_HII_CONFIG_ACCESS_PROTOCOL mConfigAccess;
+EFI_GUID StorageGuid = STORAGE_GUID;
+EFI_STRING StorageName = L"FormData";
+
+VARIABLE_STRUCTURE FormStorage;
+
+STATIC
+EFI_STATUS
+EFIAPI
+ExtractConfig (
+  IN CONST  EFI_HII_CONFIG_ACCESS_PROTOCOL  *This,
+  IN CONST  EFI_STRING                      Request,
+  OUT       EFI_STRING                      *Progress,
+  OUT       EFI_STRING                      *Results
+)
+{
+  BOOLEAN AllocatedRequest = FALSE;
+
+  if (Progress == NULL || Results == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  if ((Request != NULL) && !HiiIsConfigHdrMatch(Request, &StorageGuid, StorageName)) {
+    return EFI_NOT_FOUND;
+  }
+
+  EFI_STRING ConfigRequest = Request;
+  if ((Request == NULL) || (StrStr (Request, L"OFFSET") == NULL)) {
+    EFI_STRING ConfigRequestHdr = HiiConstructConfigHdr(&StorageGuid, StorageName, mDriverHandle);
+    UINTN Size = (StrLen(ConfigRequestHdr) + StrLen(L"&OFFSET=0&WIDTH=") + sizeof(UINTN)*2 + 1) * sizeof(CHAR16);
+    ConfigRequest = AllocateZeroPool(Size);
+    AllocatedRequest = TRUE;
+    UnicodeSPrint(ConfigRequest, Size, L"%s&OFFSET=0&WIDTH=%016LX", ConfigRequestHdr, sizeof(VARIABLE_STRUCTURE));
+    FreePool(ConfigRequestHdr);
+  }
+  EFI_STATUS Status = gHiiConfigRouting->BlockToConfig(gHiiConfigRouting,
+                                                       ConfigRequest,
+                                                       (UINT8*)&FormStorage,
+                                                       sizeof(VARIABLE_STRUCTURE),
+                                                       Results,
+                                                       Progress);
+
+  if (AllocatedRequest) {
+    FreePool(ConfigRequest);
+    if (Request == NULL) {
+      *Progress = NULL;
+    } else if (StrStr(Request, L"OFFSET") == NULL) {
+      *Progress = Request + StrLen(Request);
+    }
+  }
+
+  return Status;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+RouteConfig (
+  IN CONST  EFI_HII_CONFIG_ACCESS_PROTOCOL  *This,
+  IN CONST  EFI_STRING                      Configuration,
+  OUT       EFI_STRING                      *Progress
+)
+{
+  if (Configuration == NULL || Progress == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  UINTN BlockSize = sizeof(VARIABLE_STRUCTURE);
+  EFI_STATUS Status = gHiiConfigRouting->ConfigToBlock(gHiiConfigRouting,
+                                                       Configuration,
+                                                       (UINT8*)&FormStorage,
+                                                       &BlockSize,
+                                                       Progress);
+
+  return Status;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+Callback (
+  IN     CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,
+  IN     EFI_BROWSER_ACTION                     Action,
+  IN     EFI_QUESTION_ID                        QuestionId,
+  IN     UINT8                                  Type,
+  IN OUT EFI_IFR_TYPE_VALUE                     *Value,
+  OUT    EFI_BROWSER_ACTION_REQUEST             *ActionRequest
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS
+EFIAPI
+HiddenSettingsUnload (
+  EFI_HANDLE ImageHandle
+  )
+{
+  if (mHiiHandle != NULL)
+    HiiRemovePackages(mHiiHandle);
+
+
+  EFI_STATUS Status = gBS->UninstallMultipleProtocolInterfaces(
+                             mDriverHandle,
+                             &gEfiDevicePathProtocolGuid,
+                             &mHiiVendorDevicePath,
+                             &gEfiHiiConfigAccessProtocolGuid,
+                             &mConfigAccess,
+                             NULL);
+
+  UINTN BufferSize;
+  VARIABLE_STRUCTURE EfiVarstore;
+  BufferSize = sizeof(VARIABLE_STRUCTURE);
+  EFI_GUID EfiVarGuid = STORAGE_EFI_GUID;
+  Status = gRT->GetVariable(
+                L"FormEfiData",
+                &EfiVarGuid,
+                NULL,
+                &BufferSize,
+                &EfiVarstore);
+  if (!EFI_ERROR(Status)) {
+    Status = gRT->SetVariable(
+                  L"FormEfiData",
+                  &EfiVarGuid,
+                  0,
+                  0,
+                  NULL);
+    if (EFI_ERROR(Status)) {
+      Print(L"Error! Can't delete variable! %r\n", Status);
+    }
+  }
+
+  return Status;
+}
+
+EFI_STATUS
+EFIAPI
+HiddenSettingsEntryPoint (
+  IN EFI_HANDLE        ImageHandle,
+  IN EFI_SYSTEM_TABLE  *SystemTable
+  )
+{
+  mConfigAccess.ExtractConfig = &ExtractConfig;
+  mConfigAccess.RouteConfig   = &RouteConfig;
+  mConfigAccess.Callback      = &Callback;
+
+  EFI_STATUS Status;
+  Status = gBS->InstallMultipleProtocolInterfaces(
+                  &mDriverHandle,
+                  &gEfiDevicePathProtocolGuid,
+                  &mHiiVendorDevicePath,
+                  &gEfiHiiConfigAccessProtocolGuid,
+                  &mConfigAccess,
+                  NULL
+                  );
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  mHiiHandle = HiiAddPackages(
+                 &gEfiCallerIdGuid,
+                 mDriverHandle,
+                 HiddenSettingsStrings,
+                 FormBin,
+                 NULL
+                 );
+  if (mHiiHandle == NULL) {
+    gBS->UninstallMultipleProtocolInterfaces(
+           mDriverHandle,
+           &gEfiDevicePathProtocolGuid,
+           &mHiiVendorDevicePath,
+           &gEfiHiiConfigAccessProtocolGuid,
+           &mConfigAccess,
+           NULL);
+    return EFI_OUT_OF_RESOURCES;
+  }
+
+  EFI_STRING ConfigStr;
+  UINT16 DefaultId = 0;
+
+  UINTN BufferSize;
+  VARIABLE_STRUCTURE EfiVarstore;
+  BufferSize = sizeof(VARIABLE_STRUCTURE);
+  EFI_GUID EfiVarGuid = STORAGE_EFI_GUID;
+  Status = gRT->GetVariable (
+                L"FormEfiData",
+                &EfiVarGuid,
+                NULL,
+                &BufferSize,
+                &EfiVarstore);
+  if (EFI_ERROR(Status)) {
+    ZeroMem(&EfiVarstore, sizeof(EfiVarstore));
+    Status = gRT->SetVariable(
+                  L"FormEfiData",
+                  &EfiVarGuid,
+                  EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
+                  sizeof(EfiVarstore),
+                  &EfiVarstore);
+    if (EFI_ERROR(Status)) {
+      Print(L"Error! Can't create variable! %r\n", Status);
+    }
+
+    ConfigStr = HiiConstructConfigHdr(&EfiVarGuid, L"FormEfiData", mDriverHandle);
+    UINT16 DefaultId = 0;
+    if (!HiiSetToDefaults(ConfigStr, DefaultId)) {
+      Print(L"Error! Can't set default configuration #%d\n", DefaultId);
+    }
+  }
+
+  ConfigStr = HiiConstructConfigHdr(&StorageGuid, L"FormData", mDriverHandle);
+  if (!HiiSetToDefaults(ConfigStr, DefaultId)) {
+    Print(L"Error! Can't set default configuration #%d\n", DefaultId);
+  }
+
+  return EFI_SUCCESS;
+}