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 --- lib/rsa/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/rsa/Kconfig b/lib/rsa/Kconfig index 09ec358242..fde1ac108d 100644 --- 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.