mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-27 12:15:19 +01:00
181 lines
3.5 KiB
C
181 lines
3.5 KiB
C
/** @file
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Copyright (c) 2017-2018, savvas
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Copyright (c) 2018, vit9696
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All rights reserved.
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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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**/
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#include <Uefi.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/OcConsoleLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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STATIC
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EFI_STATUS
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EFIAPI
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NullTextReset (
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IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This,
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IN BOOLEAN ExtendedVerification
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)
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{
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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NullTextOutputString (
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IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This,
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IN CHAR16 *String
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)
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{
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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NullTextTestString (
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IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This,
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IN CHAR16 *String
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)
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{
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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NullTextQueryMode (
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IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This,
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IN UINTN ModeNumber,
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OUT UINTN *Columns,
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OUT UINTN *Rows
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)
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{
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return EFI_UNSUPPORTED;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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NullTextSetMode (
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IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This,
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IN UINTN ModeNumber
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)
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{
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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NullTextSetAttribute (
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IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This,
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IN UINTN Attribute
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)
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{
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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NullTextClearScreen (
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IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This
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)
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{
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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NullTextSetCursorPosition (
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IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This,
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IN UINTN Column,
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IN UINTN Row
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)
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{
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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NullTextEnableCursor (
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IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This,
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IN BOOLEAN Visible
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)
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{
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return EFI_SUCCESS;
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}
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STATIC
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EFI_SIMPLE_TEXT_OUTPUT_MODE
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mNullTextOutputMode;
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STATIC
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EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL
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mNullTextOutputProtocol = {
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NullTextReset,
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NullTextOutputString,
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NullTextTestString,
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NullTextQueryMode,
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NullTextSetMode,
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NullTextSetAttribute,
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NullTextClearScreen,
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NullTextSetCursorPosition,
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NullTextEnableCursor,
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&mNullTextOutputMode
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};
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EFI_SYSTEM_TABLE *
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AllocateNullTextOutSystemTable (
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_SYSTEM_TABLE *NewSystemTable;
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EFI_STATUS Status;
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//
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// Patch verbose
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//
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NewSystemTable = (EFI_SYSTEM_TABLE *) AllocateZeroPool (SystemTable->Hdr.HeaderSize);
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if (NewSystemTable == NULL) {
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return NULL;
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}
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CopyMem ((VOID *) NewSystemTable, SystemTable, SystemTable->Hdr.HeaderSize);
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NewSystemTable->ConOut = &mNullTextOutputProtocol;
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NewSystemTable->Hdr.CRC32 = 0;
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Status = gBS->CalculateCrc32 (
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NewSystemTable,
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NewSystemTable->Hdr.HeaderSize,
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&NewSystemTable->Hdr.CRC32
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_WARN, "OCC: Failed to calculated new system table CRC32 with Status: %r\n", Status));
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FreePool (NewSystemTable);
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return NULL;
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}
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return NewSystemTable;
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}
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