plat/arm/rddaniel: add platform function to return ROTPK
TBBR authentication framework depends on the plat_get_rotpk_info()
function to return the pointer to the Root of Trust Public Key (ROTPK)
stored in the platform along with its length. Add this function for
RD-Daniel platform to support Trusted Board Boot. The function makes use
of the wrapper function provided by the arm common trusted board boot
function to get the ROTPK hash.
Change-Id: I6c2826a7898664afea19fd62432684cfddd9319a
Signed-off-by: Vijayenthiran Subramaniam <vijayenthiran.subramaniam@arm.com>
diff --git a/plat/arm/board/rddaniel/rddaniel_trusted_boot.c b/plat/arm/board/rddaniel/rddaniel_trusted_boot.c
new file mode 100644
index 0000000..4592b8f
--- /dev/null
+++ b/plat/arm/board/rddaniel/rddaniel_trusted_boot.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <plat/arm/common/plat_arm.h>
+
+/*
+ * Return the ROTPK hash in the following ASN.1 structure in DER format:
+ *
+ * AlgorithmIdentifier ::= SEQUENCE {
+ * algorithm OBJECT IDENTIFIER,
+ * parameters ANY DEFINED BY algorithm OPTIONAL
+ * }
+ *
+ * DigestInfo ::= SEQUENCE {
+ * digestAlgorithm AlgorithmIdentifier,
+ * digest OCTET STRING
+ * }
+ */
+int plat_get_rotpk_info(void *cookie, void **key_ptr, unsigned int *key_len,
+ unsigned int *flags)
+{
+ return arm_get_rotpk_info(cookie, key_ptr, key_len, flags);
+}