cryptocell acceleration as an option

Author: paul-szczepanek-arm

features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_NORDIC_CORDIO/TARGET_MCU_NRF52840/mbed_lib.json

@@ -16,6 +16,10 @@
         "tx-buffers": {
             "help": "Default number of send buffers",
             "value": 16
+        },
+        "cryptocell310-acceleration": {
+            "help": "Should the link layer use the Crypto Cell 310 to offload encryption.",
+            "value": 1
         }
     }
 }

features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_NORDIC_CORDIO/TARGET_NRF5x/stack/sources/pal_crypto.c

@@ -23,7 +23,7 @@
 
 #include "pal_types.h"
 #include "pal_bb_ble.h"
-#if defined(NRF52840_XXAA)
+#if defined(NRF52840_XXAA) && MBED_CONF_CORDIO_LL_NRF52840_CRYPTOCELL310_ACCELERATION
 #include "crys_rsa_kg.h"
 #include "crys_dh.h"
 #include "ssi_pal_types.h"
@@ -34,7 +34,7 @@
 /* Nordic specific definitions. */
 #include "nrf_ecb.h"
 #include "nrf.h"
-#if defined(NRF52840_XXAA)
+#if defined(NRF52840_XXAA) && MBED_CONF_CORDIO_LL_NRF52840_CRYPTOCELL310_ACCELERATION
 #include "nrf52840.h"
 #endif
 #include <string.h>
@@ -690,7 +690,7 @@ bool_t PalCryptoAesCcmDecrypt(PalCryptoEnc_t *pEnc, uint8_t *pBuf)
   return TRUE;
 }
 
-#if defined(NRF52840_XXAA)
+#if defined(NRF52840_XXAA) && MBED_CONF_CORDIO_LL_NRF52840_CRYPTOCELL310_ACCELERATION
 /*************************************************************************************************/
 /*!
  *  \brief  Execute the CCM-Mode encryption algorithm.