1 files changed, 30 insertions, 0 deletions
diff --git a/arch/riscv64/kernel/irq.c b/arch/riscv64/kernel/irq.c
new file mode 100644
index 0000000..f844dd1
--- /dev/null
+++ b/arch/riscv64/kernel/irq.c
@@ -0,0 +1,30 @@
+#include <apos/irq.h>
+#include <apos/attrs.h>
+#include <apos/debug.h>
+#include <csr.h>
+
+void init_irq(void *fdt)
+{
+	UNUSED(fdt);
+	csr_write(CSR_STVEC, &handle_irq);
+	
+	long s = 0;
+	csr_read(CSR_SIE, s);
+	info("CSR_SIE: %lx\n", s);
+}
+
+__aligned(4) void handle_irq()
+{
+	while(1);
+}
+
+/* very simple for now */
+void enable_irq()
+{
+	csr_set(CSR_SSTATUS, CSR_SIE);
+}
+
+void disable_irq()
+{
+	csr_clear(CSR_SSTATUS, CSR_SIE);
+}