upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/include/linux/crc32.h

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/*
* crc32.h
* See linux/lib/crc32.c for license and changes
*/
#ifndef _LINUX_CRC32_H
#define _LINUX_CRC32_H
#include <linux/types.h>
/* #include <linux/bitrev.h> */
extern u32 crc32_le(u32 crc, unsigned char const *p, size_t len);
/* extern u32 crc32_be(u32 crc, unsigned char const *p, size_t len); */
#define crc32(seed, data, length) crc32_le(seed, (unsigned char const *)data, length)
/*
* Helpers for hash table generation of ethernet nics:
*
* Ethernet sends the least significant bit of a byte first, thus crc32_le
* is used. The output of crc32_le is bit reversed [most significant bit
* is in bit nr 0], thus it must be reversed before use. Except for
* nics that bit swap the result internally...
*/
/* #define ether_crc(length, data) bitrev32(crc32_le(~0, data, length)) */
/* #define ether_crc_le(length, data) crc32_le(~0, data, length) */
#endif /* _LINUX_CRC32_H */