refactor: promote new architecture to repository root

Archive the deprecated implementation under lume-legacy, make the new kernel the default root-level build, and update repository entry points without changing kernel behavior.

1 files changed, 22 insertions, 0 deletions

diff --git a/lume-legacy/include/drivers/plic.h b/lume-legacy/include/drivers/plic.h
new file mode 100644
index 0000000..cdcd0ce
--- /dev/null
+++ b/lume-legacy/include/drivers/plic.h
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
+#pragma once
+#include "common/types.h"
+
+namespace PLIC
+{
+    // Global initialization (executed only once by hart 0)
+    void init();
+
+    // Per-core initialization (executed when each CPU starts)
+    void inithart();
+
+    // Claim interrupt: Get the currently occurring interrupt number (IRQ)
+    int claim();
+
+    // End of interrupt: notify the PLIC that this IRQ has been handled
+    void complete(int irq);
+} // namespace PILC