ARM plat changes to enable CryptoCell integration
This patch makes the necessary changes to enable ARM platform to
successfully integrate CryptoCell during Trusted Board Boot. The
changes are as follows:
* A new build option `ARM_CRYPTOCELL_INTEG` is introduced to select
the CryptoCell crypto driver for Trusted Board boot.
* The TrustZone filter settings for Non Secure DRAM is modified
to allow CryptoCell to read this memory. This is required to
authenticate BL33 which is loaded into the Non Secure DDR.
* The CSS platforms are modified to use coherent stacks in BL1 and BL2
when CryptoCell crypto is selected. This is because CryptoCell makes
use of DMA to transfer data and the CryptoCell SBROM library allocates
buffers on the stack during signature/hash verification.
Change-Id: I1e6f6dcd1899784f1edeabfa2a9f279bbfb90e31
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
diff --git a/plat/arm/common/arm_common.mk b/plat/arm/common/arm_common.mk
index 5cc1a0a..e0b7af4 100644
--- a/plat/arm/common/arm_common.mk
+++ b/plat/arm/common/arm_common.mk
@@ -94,6 +94,11 @@
# Use generic OID definition (tbbr_oid.h)
USE_TBBR_DEFS := 1
+# Disable ARM Cryptocell by default
+ARM_CRYPTOCELL_INTEG := 0
+$(eval $(call assert_boolean,ARM_CRYPTOCELL_INTEG))
+$(eval $(call add_define,ARM_CRYPTOCELL_INTEG))
+
PLAT_INCLUDES += -Iinclude/common/tbbr \
-Iinclude/plat/arm/common
@@ -181,7 +186,11 @@
TF_MBEDTLS_KEY_ALG := ${KEY_ALG}
# We expect to locate the *.mk files under the directories specified below
+ifeq (${ARM_CRYPTOCELL_INTEG},0)
CRYPTO_LIB_MK := drivers/auth/mbedtls/mbedtls_crypto.mk
+else
+ CRYPTO_LIB_MK := drivers/auth/cryptocell/cryptocell_crypto.mk
+endif
IMG_PARSER_LIB_MK := drivers/auth/mbedtls/mbedtls_x509.mk
$(info Including ${CRYPTO_LIB_MK})