Signed-off-by: Antony Pavlov <antonynpavlov@xxxxxxxxx>
---
arch/arm/Kconfig | 1 +
arch/arm/mach-uemd/include/mach/debug_ll.h | 41 ++++++++++++++++++++++++++++++
2 files changed, 42 insertions(+)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 040df54..5dc9c64 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -187,6 +187,7 @@ config ARCH_TEGRA
config ARCH_UEMD
bool "RC Module UEMD Platform"
select CPU_ARM1176
+ select HAS_DEBUG_LL
config ARCH_ZYNQ
bool "Xilinx Zynq-based boards"
diff --git a/arch/arm/mach-uemd/include/mach/debug_ll.h b/arch/arm/mach-uemd/include/mach/debug_ll.h
new file mode 100644
index 0000000..5b45f6a
--- /dev/null
+++ b/arch/arm/mach-uemd/include/mach/debug_ll.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2014 Antony Pavlov <antonynpavlov@xxxxxxxxx>
+ *
+ * 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.
+ *
+ */
+
+/** @file
+ * This File contains declaration for early output support
+ */
+#ifndef __INCLUDE_ARCH_DEBUG_LL_H__
+#define __INCLUDE_ARCH_DEBUG_LL_H__
+
+#include <asm/io.h>
+
+#define DEBUG_LL_UART_ADDR 0x2002b000
+#define DEBUG_LL_UART_RSHFT 2
+
+#define rbr (0 << DEBUG_LL_UART_RSHFT)
+#define lsr (5 << DEBUG_LL_UART_RSHFT)
+#define LSR_THRE 0x20 /* Xmit holding register empty */
+
+static inline void PUTC_LL(char ch)
+{
+ while (!(__raw_readb(DEBUG_LL_UART_ADDR + lsr) & LSR_THRE))
+ ;
+
+ __raw_writeb(ch, DEBUG_LL_UART_ADDR + rbr);
+}
+
+#endif /* __INCLUDE_ARCH_DEBUG_LL_H__ */
--
1.9.0
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