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      1 config RSA
      2 	bool "Use RSA Library"
      3 	select RSA_FREESCALE_EXP if FSL_CAAM && !ARCH_MX7 && !ARCH_MX6 && !ARCH_MX5
      4 	select RSA_SOFTWARE_EXP if !RSA_FREESCALE_EXP
      5 	help
      6 	  RSA support. This enables the RSA algorithm used for FIT image
      7 	  verification in U-Boot.
      8 	  See doc/uImage.FIT/signature.txt for more details.
      9 	  The Modular Exponentiation algorithm in RSA is implemented using
     10 	  driver model. So CONFIG_DM needs to be enabled by default for this
     11 	  library to function.
     12 	  The signing part is build into mkimage regardless of this
     13 	  option. The software based modular exponentiation is built into
     14 	  mkimage irrespective of this option.
     15 
     16 if RSA
     17 
     18 config SPL_RSA
     19 	bool "Use RSA Library within SPL"
     20 
     21 config RSA_SOFTWARE_EXP
     22 	bool "Enable driver for RSA Modular Exponentiation in software"
     23 	depends on DM
     24 	help
     25 	  Enables driver for modular exponentiation in software. This is a RSA
     26 	  algorithm used in FIT image verification. It required RSA Key as
     27 	  input.
     28 	  See doc/uImage.FIT/signature.txt for more details.
     29 
     30 config RSA_FREESCALE_EXP
     31 	bool "Enable RSA Modular Exponentiation with FSL crypto accelerator"
     32 	depends on DM && FSL_CAAM && !ARCH_MX7 && !ARCH_MX6 && !ARCH_MX5
     33 	help
     34 	Enables driver for RSA modular exponentiation using Freescale cryptographic
     35 	accelerator - CAAM.
     36 
     37 endif
     38