Add lesson 72

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

1 files changed, 140 insertions, 0 deletions

diff --git a/UefiLessonsPkg/HIIFormLabel/HIIFormLabel.c b/UefiLessonsPkg/HIIFormLabel/HIIFormLabel.c
new file mode 100644
index 0000000..adf3172
--- /dev/null
+++ b/UefiLessonsPkg/HIIFormLabel/HIIFormLabel.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2021, Konstantin Aladyshev <aladyshev22@gmail.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/HiiLib.h>
+#include <Guid/MdeModuleHii.h>
+#include "Data.h"
+
+extern UINT8 FormBin[];
+
+EFI_HII_HANDLE  mHiiHandle = NULL;
+
+
+EFI_STATUS
+EFIAPI
+HIIFormLabelUnload (
+  EFI_HANDLE ImageHandle
+  )
+{
+  if (mHiiHandle != NULL)
+    HiiRemovePackages(mHiiHandle);
+
+  return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+HIIFormLabelEntryPoint (
+  IN EFI_HANDLE        ImageHandle,
+  IN EFI_SYSTEM_TABLE  *SystemTable
+  )
+{
+  mHiiHandle = HiiAddPackages(
+                 &gEfiCallerIdGuid,
+                 NULL,
+                 HIIFormLabelStrings,
+                 FormBin,
+                 NULL
+                 );
+  if (mHiiHandle == NULL) {
+    return EFI_OUT_OF_RESOURCES;
+  }
+
+  VOID* StartOpCodeHandle = HiiAllocateOpCodeHandle();
+  EFI_IFR_GUID_LABEL* StartLabel = (EFI_IFR_GUID_LABEL*) HiiCreateGuidOpCode(StartOpCodeHandle,
+                                                                             &gEfiIfrTianoGuid,
+                                                                             NULL,
+                                                                             sizeof(EFI_IFR_GUID_LABEL)
+                                                                             );
+  if (StartLabel == NULL) {
+    Print(L"Error! Can't create StartLabel opcode, not enough space\n");
+    HiiRemovePackages(mHiiHandle);
+    return EFI_BUFFER_TOO_SMALL;
+  }
+  StartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
+  StartLabel->Number = LABEL_START;
+
+
+  VOID* EndOpCodeHandle = HiiAllocateOpCodeHandle();
+  EFI_IFR_GUID_LABEL* EndLabel = (EFI_IFR_GUID_LABEL*) HiiCreateGuidOpCode(EndOpCodeHandle,
+                                                                           &gEfiIfrTianoGuid,
+                                                                           NULL,
+                                                                           sizeof(EFI_IFR_GUID_LABEL)
+                                                                           );
+  if (EndLabel == NULL) {
+    Print(L"Error! Can't create EndLabel opcode, not enough space\n");
+    HiiFreeOpCodeHandle(StartOpCodeHandle);
+    HiiFreeOpCodeHandle(EndOpCodeHandle);
+    HiiRemovePackages(mHiiHandle);
+    return EFI_BUFFER_TOO_SMALL;
+  }
+
+  EndLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
+  EndLabel->Number = LABEL_END;
+
+  EFI_STRING_ID text_prompt = HiiSetString(mHiiHandle,
+                                           0,
+                                           L"Text prompt",
+                                           NULL);
+  EFI_STRING_ID text_help = HiiSetString(mHiiHandle,
+                                         0,
+                                         L"Text help",
+                                         NULL);
+
+
+  UINT8* Result = HiiCreateTextOpCode(StartOpCodeHandle,
+                                      text_prompt,
+                                      text_help,
+                                      0);
+  if (Result == NULL) {
+    Print(L"Error! Can't create Text opcode, not enough space\n");
+    HiiFreeOpCodeHandle(StartOpCodeHandle);
+    HiiFreeOpCodeHandle(EndOpCodeHandle);
+    HiiRemovePackages(mHiiHandle);
+    return EFI_BUFFER_TOO_SMALL;
+  }
+
+  text_prompt = HiiSetString(mHiiHandle,
+                             0,
+                             L"Another text prompt",
+                             NULL);
+  text_help = HiiSetString(mHiiHandle,
+                           0,
+                           L"Another text help",
+                           NULL);
+
+  Result = HiiCreateTextOpCode(StartOpCodeHandle,
+                               text_prompt,
+                               text_help,
+                               0);
+  if (Result == NULL) {
+    Print(L"Error! Can't create Text opcode, not enough space\n");
+    HiiFreeOpCodeHandle(StartOpCodeHandle);
+    HiiFreeOpCodeHandle(EndOpCodeHandle);
+    HiiRemovePackages(mHiiHandle);
+    return EFI_BUFFER_TOO_SMALL;
+  }
+
+
+ 
+  EFI_GUID formsetGuid = FORMSET_GUID;
+  EFI_STATUS Status = HiiUpdateForm(
+                        mHiiHandle,
+                        &formsetGuid,
+                        0x1,
+                        StartOpCodeHandle,
+                        EndOpCodeHandle
+                      );
+  if (EFI_ERROR(Status)) {
+    Print(L"Error! HiiUpdateForm returned = %r\n", Status);
+  }
+
+  HiiFreeOpCodeHandle(StartOpCodeHandle);
+  HiiFreeOpCodeHandle(EndOpCodeHandle);
+  return Status;
+}