arm_fpga: Add support for unknown MPIDs
This patch allows the system to fallback to a default CPU library
in case the MPID does not match with any of the supported ones.
This feature can be enabled by setting SUPPORT_UNKNOWN_MPID build
option to 1 (enabled by default only on arm_fpga platform).
This feature can be very dangerous on a production image and
therefore it MUST be disabled for Release images.
Signed-off-by: Javier Almansa Sobrino <javier.almansasobrino@arm.com>
Change-Id: I0df7ef2b012d7d60a4fd5de44dea1fbbb46881ba
diff --git a/include/lib/cpus/aarch64/generic.h b/include/lib/cpus/aarch64/generic.h
new file mode 100644
index 0000000..53df587
--- /dev/null
+++ b/include/lib/cpus/aarch64/generic.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2020, Arm Limited. All rights reserverd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef AARCH64_GENERIC_H
+#define AARCH64_GENERIC_H
+
+#include <lib/utils_def.h>
+
+/*
+ * 0x0 value on the MIDR implementer value is reserved for software use,
+ * so use an MIDR value of 0 for a default CPU library.
+ */
+#define AARCH64_GENERIC_MIDR U(0)
+
+#endif /* AARCH64_GENERIC_H */