1. 根目录:
2. arch
3. arm
4. crypto
5. sha256_glue.h

#ifndef _CRYPTO_SHA256_GLUE_H
#define _CRYPTO_SHA256_GLUE_H

#include <linux/crypto.h>
#include <crypto/sha.h>

extern struct shash_alg sha256_neon_algs[2];

extern int sha256_init(struct shash_desc *desc);

extern int sha224_init(struct shash_desc *desc);

extern int __sha256_update(struct shash_desc *desc, const u8 *data,
			   unsigned int len, unsigned int partial);

extern int sha256_update(struct shash_desc *desc, const u8 *data,
			 unsigned int len);

extern int sha256_export(struct shash_desc *desc, void *out);

extern int sha256_import(struct shash_desc *desc, const void *in);

#endif /* _CRYPTO_SHA256_GLUE_H */