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-rw-r--r--UefiLessonsPkg/HIIFormDataElementsVarstore/HIIFormDataElementsVarstore.c216
1 files changed, 216 insertions, 0 deletions
diff --git a/UefiLessonsPkg/HIIFormDataElementsVarstore/HIIFormDataElementsVarstore.c b/UefiLessonsPkg/HIIFormDataElementsVarstore/HIIFormDataElementsVarstore.c
new file mode 100644
index 0000000..27c7b1a
--- /dev/null
+++ b/UefiLessonsPkg/HIIFormDataElementsVarstore/HIIFormDataElementsVarstore.c
@@ -0,0 +1,216 @@
+/*
+ * Copyright (c) 2022, Konstantin Aladyshev <aladyshev22@gmail.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <Library/BaseMemoryLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/HiiLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiHiiServicesLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PrintLib.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
+HIIFormDataElementsVarstoreUnload (
+ EFI_HANDLE ImageHandle
+ )
+{
+ if (mHiiHandle != NULL)
+ HiiRemovePackages(mHiiHandle);
+
+ EFI_STATUS Status = gBS->UninstallMultipleProtocolInterfaces(
+ mDriverHandle,
+ &gEfiDevicePathProtocolGuid,
+ &mHiiVendorDevicePath,
+ &gEfiHiiConfigAccessProtocolGuid,
+ &mConfigAccess,
+ NULL);
+
+ return Status;
+}
+
+EFI_STATUS
+EFIAPI
+HIIFormDataElementsVarstoreEntryPoint (
+ 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,
+ HIIFormDataElementsVarstoreStrings,
+ FormBin,
+ NULL
+ );
+ if (mHiiHandle == NULL) {
+ gBS->UninstallMultipleProtocolInterfaces(
+ mDriverHandle,
+ &gEfiDevicePathProtocolGuid,
+ &mHiiVendorDevicePath,
+ &gEfiHiiConfigAccessProtocolGuid,
+ &mConfigAccess,
+ NULL);
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ EFI_STRING ConfigStr = HiiConstructConfigHdr(&StorageGuid, StorageName, mDriverHandle);
+ UINT16 DefaultId = 1;
+ if (!HiiSetToDefaults(ConfigStr, DefaultId)) {
+ Print(L"Error! Can't set default configuration #%d\n", DefaultId);
+ }
+
+ return EFI_SUCCESS;
+}