nios2: set up the debug UART early
Set up the debug UART early if enabled, so that it is ready to use.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Chin Liang See <clsee@altera.com>
diff --git a/arch/nios2/cpu/start.S b/arch/nios2/cpu/start.S
index 204d0cd..3e1b0c9 100644
--- a/arch/nios2/cpu/start.S
+++ b/arch/nios2/cpu/start.S
@@ -106,6 +106,13 @@
stw r0, 4(sp)
mov fp, sp
+#ifdef CONFIG_DEBUG_UART
+ /* Set up the debug UART */
+ movhi r2, %hi(debug_uart_init@h)
+ ori r2, r2, %lo(debug_uart_init@h)
+ callr r2
+#endif
+
/* Allocate and initialize reserved area, update SP */
mov r4, sp
movhi r2, %hi(board_init_f_alloc_reserve@h)