diff options
Diffstat (limited to 'EdkModulePkg/Universal/Runtime/RuntimeDxe/Crc32.c')
-rw-r--r-- | EdkModulePkg/Universal/Runtime/RuntimeDxe/Crc32.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/EdkModulePkg/Universal/Runtime/RuntimeDxe/Crc32.c b/EdkModulePkg/Universal/Runtime/RuntimeDxe/Crc32.c deleted file mode 100644 index dc22fa04fc..0000000000 --- a/EdkModulePkg/Universal/Runtime/RuntimeDxe/Crc32.c +++ /dev/null @@ -1,147 +0,0 @@ -/*++
-
-Copyright (c) 2006, Intel Corporation
-All rights reserved. This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-Module Name:
-
- Crc32.c
-
-Abstract:
-
- CalculateCrc32 Boot Services as defined in DXE CIS.
-
- This Boot Services is in the Runtime Driver because this service is
- also required by SetVirtualAddressMap() when the EFI System Table and
- EFI Runtime Services Table are converted from physical address to
- virtual addresses. This requires that the 32-bit CRC be recomputed.
-
-Revision History:
-
---*/
-
-#include "Runtime.h"
-
-UINT32 mCrcTable[256];
-
-EFI_STATUS
-EFIAPI
-RuntimeDriverCalculateCrc32 (
- IN VOID *Data,
- IN UINTN DataSize,
- OUT UINT32 *CrcOut
- )
-/*++
-
-Routine Description:
-
- Calculate CRC32 for target data
-
-Arguments:
-
- Data - The target data.
- DataSize - The target data size.
- CrcOut - The CRC32 for target data.
-
-Returns:
-
- EFI_SUCCESS - The CRC32 for target data is calculated successfully.
- EFI_INVALID_PARAMETER - Some parameter is not valid, so the CRC32 is not
- calculated.
-
---*/
-{
- UINT32 Crc;
- UINTN Index;
- UINT8 *Ptr;
-
- if (Data == NULL || DataSize == 0 || CrcOut == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Crc = 0xffffffff;
- for (Index = 0, Ptr = Data; Index < DataSize; Index++, Ptr++) {
- Crc = (Crc >> 8) ^ mCrcTable[(UINT8) Crc ^ *Ptr];
- }
-
- *CrcOut = Crc ^ 0xffffffff;
- return EFI_SUCCESS;
-}
-
-STATIC
-UINT32
-ReverseBits (
- UINT32 Value
- )
-/*++
-
-Routine Description:
-
- Reverse bits for 32bit data.
-
-Arguments:
-
- Value - the data to be reversed.
-
-Returns:
-
- UINT32 data reversed.
-
---*/
-{
- UINTN Index;
- UINT32 NewValue;
-
- NewValue = 0;
- for (Index = 0; Index < 32; Index++) {
- if (Value & (1 << Index)) {
- NewValue = NewValue | (1 << (31 - Index));
- }
- }
-
- return NewValue;
-}
-
-VOID
-RuntimeDriverInitializeCrc32Table (
- VOID
- )
-/*++
-
-Routine Description:
-
- Initialize CRC32 table.
-
-Arguments:
-
- None.
-
-Returns:
-
- None.
-
---*/
-{
- UINTN TableEntry;
- UINTN Index;
- UINT32 Value;
-
- for (TableEntry = 0; TableEntry < 256; TableEntry++) {
- Value = ReverseBits ((UINT32) TableEntry);
- for (Index = 0; Index < 8; Index++) {
- if (Value & 0x80000000) {
- Value = (Value << 1) ^ 0x04c11db7;
- } else {
- Value = Value << 1;
- }
- }
-
- mCrcTable[TableEntry] = ReverseBits (Value);
- }
-}
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