lib/rsa: Add Kconfig for devices supporting RSA Modular Exponentiation

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@freescale.com>
CC: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
(Removed duplicate line in Kconfig comment)

Change-Id: I7663c4d5350e2bfc3dfa2696f70ef777d6ccc6f6

diff --git a/lib/Kconfig b/lib/Kconfig
index 79b91b7747591a8192ba2e3a3b744858b3f975a4..a1f30a2c4ef0931483cf80010ef0674ea5dbbb58 100644 (file)
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -27,11 +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"
-       help
-         RSA support. This enables the RSA algorithm used for FIT image
-         verification in U-Boot.
-         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 (file)
index 0000000..1268a1b
--- /dev/null
+++ b/lib/rsa/Kconfig
@@ -0,0 +1,27 @@
+config RSA
+       bool "Use RSA Library"
+       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.
+         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
+       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