Kconfig: Don't use RSA_FREESCALE_EXP on IMX

The CAAM in IMX parts doesn't support public key hardware acceleration
(PKHA), so don't use RSA_FREESCALE_EXP. If you try to use it on IMX
(assuming you have the clocks enabled first) you will get back an
"Invalid KEY Command" error since PKHA isn't a valid key destination for
these parts.

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

diff --git a/lib/rsa/Kconfig b/lib/rsa/Kconfig
index 09ec358..fde1ac1 100644 (file)
--- a/lib/rsa/Kconfig
+++ b/lib/rsa/Kconfig
@@ -1,6 +1,6 @@
 config RSA
        bool "Use RSA Library"
-       select RSA_FREESCALE_EXP if FSL_CAAM
+       select RSA_FREESCALE_EXP if FSL_CAAM && !ARCH_MX7 && !ARCH_MX6 && !ARCH_MX5
        select RSA_SOFTWARE_EXP if !RSA_FREESCALE_EXP
        help
          RSA support. This enables the RSA algorithm used for FIT image
@@ -29,7 +29,7 @@ config RSA_SOFTWARE_EXP
 
 config RSA_FREESCALE_EXP
        bool "Enable RSA Modular Exponentiation with FSL crypto accelerator"
-       depends on DM && RSA && FSL_CAAM
+       depends on DM && RSA && FSL_CAAM && !ARCH_MX7 && !ARCH_MX6 && !ARCH_MX5
        help
        Enables driver for RSA modular exponentiation using Freescale cryptographic
        accelerator - CAAM.