Introduce COT build option
Allows to select the chain of trust to use when the Trusted Boot feature
is enabled. This affects both the cert_create tool and the firmware
itself.
Right now, the only available CoT is TBBR.
Change-Id: I7ab54e66508a1416cb3fcd3dfb0f055696763b3d
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
diff --git a/plat/arm/common/arm_common.mk b/plat/arm/common/arm_common.mk
index 9d4f05e..c8b7ab4 100644
--- a/plat/arm/common/arm_common.mk
+++ b/plat/arm/common/arm_common.mk
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@@ -254,7 +254,13 @@
AUTH_SOURCES := drivers/auth/auth_mod.c \
drivers/auth/crypto_mod.c \
drivers/auth/img_parser_mod.c \
- drivers/auth/tbbr/tbbr_cot.c \
+
+ # Include the selected chain of trust sources.
+ ifeq (${COT},tbbr)
+ AUTH_SOURCES += drivers/auth/tbbr/tbbr_cot.c
+ else
+ $(error Unknown chain of trust ${COT})
+ endif
BL1_SOURCES += ${AUTH_SOURCES} \
bl1/tbbr/tbbr_img_desc.c \