riscv: hang on unhandled exceptions

Hang on unhandled exceptions to prevent execution in a faulty state.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>

diff --git a/arch/riscv/lib/interrupts.c b/arch/riscv/lib/interrupts.c
index d0d8de500ee65e31a32a61ad7638f4bc2d47348d..903a1c4cd55766f7383b6c3eb93fff67c72ef652 100644 (file)
--- a/arch/riscv/lib/interrupts.c
+++ b/arch/riscv/lib/interrupts.c
@@ -87,4 +87,6 @@ static void _exit_trap(ulong code, ulong epc, struct pt_regs *regs)
        } else {
                printf("Reserved\n");
        }
+
+       hang();
 }