4 files changed, 20 insertions, 0 deletions
diff --git a/include/drivers/plic.h b/include/drivers/plic.h
index 11e8c8a..cdcd0ce 100644
--- a/include/drivers/plic.h
+++ b/include/drivers/plic.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/drivers/uart.h b/include/drivers/uart.h
index 85b04b0..1cdc938 100644
--- a/include/drivers/uart.h
+++ b/include/drivers/uart.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 #include "drivers/uart_color.h"
diff --git a/include/drivers/uart_color.h b/include/drivers/uart_color.h
index a63d57a..7ecc28b 100644
--- a/include/drivers/uart_color.h
+++ b/include/drivers/uart_color.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 // ANSI Escape Codes for Modern Terminal Colors
 #define ANSI_RESET "\033[0m"
 #define ANSI_RED "\033[31m"
diff --git a/include/drivers/virtio.h b/include/drivers/virtio.h
index ea2c9a6..9fda8cf 100644
--- a/include/drivers/virtio.h
+++ b/include/drivers/virtio.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"