mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 09:48:16 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2012 The Chromium OS Authors.
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef _HASH_H
|
|
#define _HASH_H
|
|
|
|
#if defined(CONFIG_SHA1SUM_VERIFY) || defined(CONFIG_CRC32_VERIFY)
|
|
#define CONFIG_HASH_VERIFY
|
|
#endif
|
|
|
|
struct hash_algo {
|
|
const char *name; /* Name of algorithm */
|
|
int digest_size; /* Length of digest */
|
|
/**
|
|
* hash_func_ws: Generic hashing function
|
|
*
|
|
* This is the generic prototype for a hashing function. We only
|
|
* have the watchdog version at present.
|
|
*
|
|
* @input: Input buffer
|
|
* @ilen: Input buffer length
|
|
* @output: Checksum result (length depends on algorithm)
|
|
* @chunk_sz: Trigger watchdog after processing this many bytes
|
|
*/
|
|
void (*hash_func_ws)(const unsigned char *input, unsigned int ilen,
|
|
unsigned char *output, unsigned int chunk_sz);
|
|
int chunk_size; /* Watchdog chunk size */
|
|
};
|
|
|
|
/*
|
|
* Maximum digest size for all algorithms we support. Having this value
|
|
* avoids a malloc() or C99 local declaration in common/cmd_hash.c.
|
|
*/
|
|
#define HASH_MAX_DIGEST_SIZE 32
|
|
|
|
enum {
|
|
HASH_FLAG_VERIFY = 1 << 0, /* Enable verify mode */
|
|
HASH_FLAG_ENV = 1 << 1, /* Allow env vars */
|
|
};
|
|
|
|
/**
|
|
* hash_command: Process a hash command for a particular algorithm
|
|
*
|
|
* This common function is used to implement specific hash commands.
|
|
*
|
|
* @algo_name: Hash algorithm being used (lower case!)
|
|
* @flags: Flags value (HASH_FLAG_...)
|
|
* @cmdtp: Pointer to command table entry
|
|
* @flag: Some flags normally 0 (see CMD_FLAG_.. above)
|
|
* @argc: Number of arguments (arg 0 must be the command text)
|
|
* @argv: Arguments
|
|
*/
|
|
int hash_command(const char *algo_name, int flags, cmd_tbl_t *cmdtp, int flag,
|
|
int argc, char * const argv[]);
|
|
|
|
/**
|
|
* hash_block() - Hash a block according to the requested algorithm
|
|
*
|
|
* The caller probably knows the hash length for the chosen algorithm, but
|
|
* in order to provide a general interface, and output_size parameter is
|
|
* provided.
|
|
*
|
|
* @algo_name: Hash algorithm to use
|
|
* @data: Data to hash
|
|
* @len: Lengh of data to hash in bytes
|
|
* @output: Place to put hash value
|
|
* @output_size: On entry, pointer to the number of bytes available in
|
|
* output. On exit, pointer to the number of bytes used.
|
|
* If NULL, then it is assumed that the caller has
|
|
* allocated enough space for the hash. This is possible
|
|
* since the caller is selecting the algorithm.
|
|
* @return 0 if ok, -ve on error: -EPROTONOSUPPORT for an unknown algorithm,
|
|
* -ENOSPC if the output buffer is not large enough.
|
|
*/
|
|
int hash_block(const char *algo_name, const void *data, unsigned int len,
|
|
uint8_t *output, int *output_size);
|
|
|
|
#endif
|