diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/include/hash.h | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/include/hash.h')
-rw-r--r-- | qemu/roms/u-boot/include/hash.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/include/hash.h b/qemu/roms/u-boot/include/hash.h new file mode 100644 index 000000000..dc2167804 --- /dev/null +++ b/qemu/roms/u-boot/include/hash.h @@ -0,0 +1,128 @@ +/* + * 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 */ + /* + * hash_init: Create the context for progressive hashing + * + * @algo: Pointer to the hash_algo struct + * @ctxp: Pointer to the pointer of the context for hashing + * @return 0 if ok, -1 on error + */ + int (*hash_init)(struct hash_algo *algo, void **ctxp); + /* + * hash_update: Perform hashing on the given buffer + * + * The context is freed by this function if an error occurs. + * + * @algo: Pointer to the hash_algo struct + * @ctx: Pointer to the context for hashing + * @buf: Pointer to the buffer being hashed + * @size: Size of the buffer being hashed + * @is_last: 1 if this is the last update; 0 otherwise + * @return 0 if ok, -1 on error + */ + int (*hash_update)(struct hash_algo *algo, void *ctx, const void *buf, + unsigned int size, int is_last); + /* + * hash_finish: Write the hash result to the given buffer + * + * The context is freed by this function. + * + * @algo: Pointer to the hash_algo struct + * @ctx: Pointer to the context for hashing + * @dest_buf: Pointer to the buffer for the result + * @size: Size of the buffer for the result + * @return 0 if ok, -ENOSPC if size of the result buffer is too small + * or -1 on other errors + */ + int (*hash_finish)(struct hash_algo *algo, void *ctx, void *dest_buf, + int 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); + +/** + * hash_lookup_algo() - Look up the hash_algo struct for an algorithm + * + * The function returns the pointer to the struct or -EPROTONOSUPPORT if the + * algorithm is not available. + * + * @algo_name: Hash algorithm to look up + * @algop: Pointer to the hash_algo struct if found + * + * @return 0 if ok, -EPROTONOSUPPORT for an unknown algorithm. + */ +int hash_lookup_algo(const char *algo_name, struct hash_algo **algop); +#endif |