1 files changed, 54 insertions, 0 deletions
diff --git a/plat/arm/board/n1sdp/n1sdp_trusted_boot.c b/plat/arm/board/n1sdp/n1sdp_trusted_boot.c
new file mode 100644
index 0000000..c7dc47f
--- /dev/null
+++ b/plat/arm/board/n1sdp/n1sdp_trusted_boot.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2022, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdint.h>
+
+#include <plat/arm/common/plat_arm.h>
+
+/*
+ * Return the non-volatile counter value stored in the platform. The cookie
+ * will contain the OID of the counter in the certificate.
+ *
+ * Return: 0 = success, Otherwise = error
+ */
+int plat_get_nv_ctr(void *cookie, unsigned int *nv_ctr)
+{
+	*nv_ctr = N1SDP_FW_NVCTR_VAL;
+	return 0;
+}
+
+/*
+ * Store a new non-volatile counter value. By default on ARM development
+ * platforms, the non-volatile counters are RO and cannot be modified. We expect
+ * the values in the certificates to always match the RO values so that this
+ * function is never called.
+ *
+ * Return: 0 = success, Otherwise = error
+ */
+int plat_set_nv_ctr(void *cookie, unsigned int nv_ctr)
+{
+	return 1;
+}
+
+/*
+ * 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);
+}
+