Tianocore/edk2.git/MdePkg/Library/BaseLib/CheckSum.c, branch master

MdePkg/BaseLib: Add CRC16 CCITT False Implementation.

2024-08-06T05:18:13+00:00

This change is added to incorporate basic implementation for CRC16-CCITT-FALSE algorithm. This function is useful for providing CRC16 value used in other data structures that requires CRC16 value that complies with JEDEC SPD requirements, i.e. BDAT table. The lookup table is inherited from `https://crccalc.com/` and the result values are also compared against this site. Signed-off-by: Aaron Pop

MdePkg/BaseLib: Fix CRC16-ANSI calculation

2023-12-03T02:37:26+00:00

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4609 The current CalculateCrc16Ansi implementation does the following: 1) Invert the passed checksum 2) Calculate the new checksum by going through data and using the lookup table 3) Invert it back again This emulated my design for CalculateCrc32c, where 0 is passed as the initial checksum, and it inverts in the end. However, CRC16 does not invert the checksum on input and output. So this is incorrect. Fix the problem by not inverting input checksums nor output checksums. Callers should now pass CRC16ANSI_INIT as the initial value instead of "0". This is a breaking change. This problem was found out-of-list when older ext4 filesystems (that use crc16 checksums) failed to mount with "corruption". Cc: Liming Gao Cc: Michael D Kinney Cc: Zhiguang Liu Signed-off-by: Pedro Falcato Reviewed-by: Michael D Kinney

MdePkg/BaseLib: Add CRC16-ANSI and CRC32c implementations

2022-06-13T02:41:35+00:00

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3871 Add the CRC16-ANSI and CRC32C implementations previously found at Features/Ext4Pkg/Ext4Dxe/Crc{16,32c}.c to BaseLib. Cc: Michael D Kinney Cc: Liming Gao Cc: Zhiguang Liu Signed-off-by: Pedro Falcato Reviewed-by: Liming Gao

MdePkg: Apply uncrustify changes

2021-12-07T17:24:28+00:00

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the MdePkg package Cc: Andrew Fish Cc: Leif Lindholm Cc: Michael D Kinney Signed-off-by: Michael Kubacki Reviewed-by: Liming Gao

MdePkg: Replace BSD License with BSD+Patent License

2019-04-09T17:58:13+00:00

https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney Reviewed-by: Liming Gao

MdePkg: Clean up source files

2018-06-28T03:19:47+00:00

1. Do not use tab characters 2. No trailing white space in one line 3. All files must end with CRLF Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao

MdePkg BaseLib: Add new API CalculateCrc32()

2017-10-10T10:10:15+00:00

CalculateCrc32() bases on the initialized mCrcTable. When CalculateCrc32() is used, mCrcTable will take 1KB size in the image. When CalculateCrc32() is not used, mCrcTable will not be built in the image, and no size impact. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao

Minor grammatical work--mostly adding periods. Items with ONLY period added did not have the heading date changed, but Items with content changes had heading copyright dates updated. Sending separately a list of files missing Doxygen @param and @return information. (PENDING)

2010-06-24T00:20:35+00:00

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10596 6f19259b-4bc3-4df7-8a09-765794883524

Update the copyright notice format

2010-04-23T16:00:47+00:00

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10405 6f19259b-4bc3-4df7-8a09-765794883524

Synchronize BaseLib h files to c files.

2008-12-11T02:59:41+00:00

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6983 6f19259b-4bc3-4df7-8a09-765794883524