feat: implement hardware random number generation and early PRNG initialization

1 files changed, 21 insertions, 0 deletions

diff --git a/na/arch/riscv/lib/random.cc b/na/arch/riscv/lib/random.cc
new file mode 100644
index 0000000..afc0078
--- /dev/null
+++ b/na/arch/riscv/lib/random.cc
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (C) 2026 Richard Qin */
+
+#include <arch/random.h>
+#include <lume/klog.h>
+
+namespace arch {
+
+bool get_hw_random(uint64& value)
+{
+    /*
+     * Real implementation would check for Zkr extension and execute:
+     *   csrr x, seed
+     * 
+     * Since QEMU virt doesn't guarantee Zkr, we return false to
+     * force the MI layer to use the timer fallback.
+     */
+    return false;
+}
+
+} // namespace arch