tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

CalculateSum8() and CalculateSum16() defined in BaseLib are used to calculate checksum. 

Signed-off-by: lzeng14
Reviewed-by: rsun3

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11674 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lzeng14 2011-05-17 12:13:35 +00:00
parent ef3f88727a
commit deff65a4fd
1 changed files with 4 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
MdeModulePkg/Core/Dxe/FwVol/Ffs.c
View File

@ -1,7 +1,7 @@
/** @file /** @file
FFS file access utilities. FFS file access utilities.
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License 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 which accompanies this distribution. The full text of the license may be found at
@ -105,18 +105,9 @@ VerifyFvHeaderChecksum (
IN EFI_FIRMWARE_VOLUME_HEADER *FvHeader IN EFI_FIRMWARE_VOLUME_HEADER *FvHeader
) )
{ {
UINT32 Index;
UINT32 HeaderLength;
UINT16 Checksum; UINT16 Checksum;
UINT16 *Ptr;
HeaderLength = FvHeader->HeaderLength; Checksum = CalculateSum16 ((UINT16 *) FvHeader, FvHeader->HeaderLength);
Ptr = (UINT16 *)FvHeader;
Checksum = 0;
for (Index = 0; Index < HeaderLength / sizeof (UINT16); Index++) {
Checksum = (UINT16)(Checksum + Ptr[Index]);
}
if (Checksum == 0) { if (Checksum == 0) {
return TRUE; return TRUE;
@ -140,16 +131,9 @@ VerifyHeaderChecksum (
IN EFI_FFS_FILE_HEADER *FfsHeader IN EFI_FFS_FILE_HEADER *FfsHeader
) )
{ {
UINT32 Index; UINT8 HeaderChecksum;
UINT8 *Ptr;
UINT8 HeaderChecksum;
Ptr = (UINT8 *)FfsHeader;
HeaderChecksum = 0;
for (Index = 0; Index < sizeof(EFI_FFS_FILE_HEADER); Index++) {
HeaderChecksum = (UINT8)(HeaderChecksum + Ptr[Index]);
}
HeaderChecksum = CalculateSum8 ((UINT8 *) FfsHeader, sizeof (EFI_FFS_FILE_HEADER));
HeaderChecksum = (UINT8) (HeaderChecksum - FfsHeader->State - FfsHeader->IntegrityCheck.Checksum.File); HeaderChecksum = (UINT8) (HeaderChecksum - FfsHeader->State - FfsHeader->IntegrityCheck.Checksum.File);
if (HeaderChecksum == 0) { if (HeaderChecksum == 0) {