config DM_HASH bool "Enable Driver Model for Hash" depends on DM help If you want to use driver model for Hash, say Y. config HASH_SOFTWARE bool "Enable driver for Hash in software" depends on DM_HASH depends on MD5 depends on SHA1 depends on SHA256 depends on SHA384 depends on SHA512 help Enable driver for hashing operations in software. Currently it support multiple hash algorithm including CRC/MD5/SHA. config HASH_ASPEED bool "Enable Hash with ASPEED hash accelerator" depends on DM_HASH select ASPEED_HACE help Enable this to support HW-assisted hashing operations using ASPEED Hash and Crypto engine - HACE