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diff --git a/arch/mips/boards/loongson-ls1b/lowlevel.S b/arch/mips/boards/loongson-ls1b/lowlevel.S
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+/*
+ * Copyright (C) 2014 Antony Pavlov <antonynpavlov@gmail.com>
+ *
+ * This file is part of barebox.
+ * See file CREDITS for list of people who contributed to this project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#define BOARD_PBL_START start_loongson_ls1b
+
+#include <asm/pbl_macros.h>
+#include <mach/loongson1.h>
+#include <mach/debug_ll.h>
+#include <asm/pbl_nmon.h>
+
+ENTRY_FUNCTION(BOARD_PBL_START)
+
+ mips_barebox_10h
+
+ mips_disable_interrupts
+
+ debug_ll_ns16550_init
+
+ debug_ll_outc '.'
+ debug_ll_ns16550_outnl
+
+ENTRY_FUNCTION_END(BOARD_PBL_START, loongson_ls1b)