1 files changed, 23 insertions, 0 deletions
diff --git a/roms/opensbi/lib/sbi/sbi_math.c b/roms/opensbi/lib/sbi/sbi_math.c
new file mode 100644
index 000000000..8ba0831d8
--- /dev/null
+++ b/roms/opensbi/lib/sbi/sbi_math.c
@@ -0,0 +1,23 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2020 Western Digital Corporation or its affiliates.
+ *
+ * Common helper functions used across OpenSBI project.
+ *
+ * Authors:
+ *   Atish Patra <atish.patra@wdc.com>
+ */
+
+unsigned long log2roundup(unsigned long x)
+{
+	unsigned long ret = 0;
+
+	while (ret < __riscv_xlen) {
+		if (x <= (1UL << ret))
+			break;
+		ret++;
+	}
+
+	return ret;
+}