[U-Boot] [PATCH 7/9] [v4] lib/rsa: Add Kconfig for devices supporting RSA Modular Exponentiation

[Simon Glass]

Hi Ruchika,

On 30 December 2014 at 02:30, Ruchika Gupta <ruchika.gupta at freescale.com> wrote:
> Kconfig option added for devices which support RSA Verification.
> 1. RSA_SOFTWARE_EXP
> Enables driver for supporting RSA Modular Exponentiation in Software
> 2. RSA_FREESCALE_EXP
> Enables driver for supporting RSA Modular Exponentiation using Freescale specific
> driver
>
> The above drivers use RSA uclass
>
> Signed-off-by: Ruchika Gupta <ruchika.gupta at freescale.com>
> CC: Simon Glass <sjg at chromium.org>
> ---
> Changes in v4:
> Introduced 2 options when CONFIG_RSA is selected:
> RSA_SOFTWARE_EXP
> RSA_FREESCALE_EXP
>
> Removed RSA_HW. Changes the name pf RSA_SW to RSA_SOFTWARE_EXP
>
> Changes in v3:
> New patch
>
>  lib/Kconfig     | 10 +---------
>  lib/rsa/Kconfig | 30 ++++++++++++++++++++++++++++++
>  2 files changed, 31 insertions(+), 9 deletions(-)
>  create mode 100644 lib/rsa/Kconfig
>
> diff --git a/lib/Kconfig b/lib/Kconfig
> index f317f81..a1f30a2 100644
> --- a/lib/Kconfig
> +++ b/lib/Kconfig
> @@ -27,14 +27,6 @@ config SYS_HZ
>           get_timer() must operate in milliseconds and this option must be
>           set to 1000.
>
> -config RSA
> -       bool "Use RSA Library"
> -       depends on DM
> -       help
> -         RSA support.This enables the RSA algorithm used for FIT image
> -         verification in U-Boot. RSA support for Modular exponentiation
> -         is implemented as a driver model. Driver Model should be enabled
> -         to select this option.
> -         See doc/uImage.FIT/signature.txt for more details.
> +source lib/rsa/Kconfig
>
>  endmenu
> diff --git a/lib/rsa/Kconfig b/lib/rsa/Kconfig
> new file mode 100644
> index 0000000..14155b9
> --- /dev/null
> +++ b/lib/rsa/Kconfig
> @@ -0,0 +1,30 @@
> +config RSA
> +       bool "Use RSA Library"
> +       depends on DM
> +       select RSA_FREESCALE_EXP if FSL_CAAM
> +       select RSA_SOFTWARE_EXP if !RSA_FREESCALE_EXP
> +       help
> +         RSA support.This enables the RSA algorithm used for FIT image
> +         verification in U-Boot. RSA support for Modular exponentiation
> +         is implemented as a driver model. Driver Model should be enabled
> +         to select this option.
> +         See doc/uImage.FIT/signature.txt for more details.
> +
> +if RSA
> +config RSA_SOFTWARE_EXP
> +       bool "Enable driver for RSA Modular Exponentiation in software"
> +       depends on DM && RSA
> +       help
> +         Enables driver for modular exponentiation in software. This is a RSA
> +         algorithm used in FIT image verification. It required RSA Key as
> +         input.
> +         See doc/uImage.FIT/signature.txt for more details.
> +
> +config RSA_FREESCALE_EXP

Just for clarify, I think these names are fine, it's the naming of the
uclass that I think should change. Perhaps UCLASS_MOD_EXP or
UCLASS_RSA_MOD_EXP?


> +       bool "Enable RSA Modular Exponentiation with FSL crypto accelerator"
> +       depends on DM && RSA && FSL_CAAM
> +       help
> +       Enables driver for RSA modular exponentiation using Freescale cryptographic
> +       accelerator - CAAM.
> +
> +endif
> --
> 1.8.1.4
>

Regards,
Simon