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https://github.com/brain-hackers/u-boot-brain
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0dd9c7a924
This patch adds the bitrev library from the linux kernel. This is a simple algorithm that uses an 8 bit look-up table to reverse the bits in data types of 8, 16, or 32 bit widths. The docg4 nand flash driver uses it. [port from linux kernel v3.9 commit 7ee32a6d30d1c8a3b7a07a6269da8f0a08662927] [originally added: v2.6.20 by commit a5cfc1ec58a07074dacb6aa8c79eff864c966d12] Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
24 lines
477 B
C
24 lines
477 B
C
/*
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* This file is released under the terms of GPL v2 and any later version.
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* See the file COPYING in the root directory of the source tree for details.
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*
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* Based on bitrev from the Linux kernel, by Akinobu Mita
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*/
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#ifndef _LINUX_BITREV_H
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#define _LINUX_BITREV_H
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#include <linux/types.h>
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extern u8 const byte_rev_table[256];
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static inline u8 bitrev8(u8 byte)
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{
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return byte_rev_table[byte];
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}
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u16 bitrev16(u16 in);
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u32 bitrev32(u32 in);
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#endif /* _LINUX_BITREV_H */
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