config SPU_VERIFY
	tristate "SPU Sign Verify Driver"
	default n
        select ASYMMETRIC_KEY_TYPE
        select ASYMMETRIC_PUBLIC_KEY_SUBTYPE
        select CRYPTO_RSA
	help
	  This option enables SPU sign verify driver.
	  When SPU fireware update, image signature verify.
	  Each firmware is checked by calling a function before updating.
	  If disable config, maybe Signature checking cause problems.