diff --git a/arch/mips/mach-octeon/cvmx-fau-compat.c b/arch/mips/mach-octeon/cvmx-fau-compat.c
new file mode 100644
index 00000000000..9c2ff763ad5
--- /dev/null
+++ b/arch/mips/mach-octeon/cvmx-fau-compat.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018-2022 Marvell International Ltd.
+ */
+
+#include <log.h>
+#include <time.h>
+#include <linux/delay.h>
+
+#include <mach/cvmx-regs.h>
+#include <mach/cvmx-csr.h>
+#include <mach/cvmx-bootmem.h>
+#include <mach/octeon-model.h>
+#include <mach/cvmx-fuse.h>
+#include <mach/octeon-feature.h>
+#include <mach/cvmx-qlm.h>
+#include <mach/octeon_qlm.h>
+#include <mach/cvmx-pcie.h>
+#include <mach/cvmx-coremask.h>
+
+#include <mach/cvmx-global-resources.h>
+
+#include <mach/cvmx-pki.h>
+#include <mach/cvmx-helper.h>
+#include <mach/cvmx-helper-board.h>
+#include <mach/cvmx-helper-cfg.h>
+
+#include <mach/cvmx-hwfau.h>
+
+u8 *cvmx_fau_regs_ptr;
+
+void cvmx_fau_bootmem_init(void *bootmem)
+{
+	memset(bootmem, 0, CVMX_FAU_MAX_REGISTERS_8);
+}
+
+/**
+ * Initializes FAU region for devices without FAU unit.
+ * @return 0 on success -1 on failure
+ */
+int cvmx_fau_init(void)
+{
+	cvmx_fau_regs_ptr = (u8 *)cvmx_bootmem_alloc_named_range_once(
+		CVMX_FAU_MAX_REGISTERS_8, 0, 1ull << 31, 128,
+		"cvmx_fau_registers", cvmx_fau_bootmem_init);
+
+	if (cvmx_fau_regs_ptr == 0ull) {
+		debug("ERROR: Failed to alloc named block for software FAU.\n");
+		return -1;
+	}
+
+	return 0;
+}