ARM: uemd: add DEBUG_LL support
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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@ -202,6 +202,7 @@ config ARCH_UEMD
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select OFDEVICE
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select OFDEVICE
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select OFTREE
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select OFTREE
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select CLOCKSOURCE_UEMD
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select CLOCKSOURCE_UEMD
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select HAS_DEBUG_LL
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config ARCH_ZYNQ
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config ARCH_ZYNQ
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bool "Xilinx Zynq-based boards"
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bool "Xilinx Zynq-based boards"
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@ -0,0 +1,42 @@
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/*
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* Copyright (C) 2014 Antony Pavlov <antonynpavlov@gmail.com>
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*
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* This file is part of barebox.
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* See file CREDITS for list of people who contributed to this project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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/** @file
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* This File contains declaration for early output support
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*/
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#ifndef __INCLUDE_ARCH_DEBUG_LL_H__
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#define __INCLUDE_ARCH_DEBUG_LL_H__
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#include <asm/io.h>
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#include <mach/hardware.h>
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#define DEBUG_LL_UART_ADDR UEMD_UART0_BASE
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#define DEBUG_LL_UART_RSHFT 2
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#define rbr (0 << DEBUG_LL_UART_RSHFT)
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#define lsr (5 << DEBUG_LL_UART_RSHFT)
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#define LSR_THRE 0x20 /* Xmit holding register empty */
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static inline void PUTC_LL(char ch)
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{
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while (!(__raw_readb(DEBUG_LL_UART_ADDR + lsr) & LSR_THRE))
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;
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__raw_writeb(ch, DEBUG_LL_UART_ADDR + rbr);
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}
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#endif /* __INCLUDE_ARCH_DEBUG_LL_H__ */
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