1 files changed, 27 insertions, 0 deletions
diff --git a/na/arch/riscv/include/arch/random.h b/na/arch/riscv/include/arch/random.h
new file mode 100644
index 0000000..8c8c051
--- /dev/null
+++ b/na/arch/riscv/include/arch/random.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (C) 2026 Richard Qin */
+
+#pragma once
+
+#include <lume/types.h>
+
+namespace arch {
+
+/*
+ * Get a random 64-bit value from the hardware TRNG.
+ * Returns true if supported and successful, false otherwise.
+ */
+bool get_hw_random(uint64& value);
+
+/*
+ * Get the current high-resolution hardware cycle counter.
+ * Used as an entropy fallback (Jitter/Timer).
+ */
+inline uint64 get_cycles()
+{
+    uint64 cycles;
+    __asm__ volatile("rdcycle %0" : "=r"(cycles));
+    return cycles;
+}
+
+} // namespace arch