diff options
| author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
|---|---|---|
| committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
| commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
| tree | 65ca85f13617aee1dce474596800950f266a456c /roms/u-boot/lib/crc8.c | |
| download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip | |
Diffstat (limited to 'roms/u-boot/lib/crc8.c')
| -rw-r--r-- | roms/u-boot/lib/crc8.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/roms/u-boot/lib/crc8.c b/roms/u-boot/lib/crc8.c new file mode 100644 index 00000000..8b68a29e --- /dev/null +++ b/roms/u-boot/lib/crc8.c @@ -0,0 +1,25 @@ +/* + * Copyright (c) 2013 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include "linux/crc8.h" + +unsigned int crc8(const unsigned char *vptr, int len) +{ + const unsigned char *data = vptr; + unsigned int crc = 0; + int i, j; + + for (j = len; j; j--, data++) { + crc ^= (*data << 8); + for (i = 8; i; i--) { + if (crc & 0x8000) + crc ^= (0x1070 << 3); + crc <<= 1; + } + } + + return (crc >> 8) & 0xff; +} |