44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/*
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* Copyright (C) 2013
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* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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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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#ifndef __MACH_DEBUG_LL_H__
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#define __MACH_DEBUG_LL_H__
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#include <io.h>
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#define UART_BASE 0xf1012000
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#define UARTn_BASE(n) (UART_BASE + ((n) * 0x100))
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#define UART_THR 0x00
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#define UART_LSR 0x14
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#define LSR_THRE BIT(5)
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#define EARLY_UART UARTn_BASE(CONFIG_MVEBU_CONSOLE_UART)
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static inline void PUTC_LL(char c)
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{
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/* Wait until there is space in the FIFO */
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while (!(readl(EARLY_UART + UART_LSR) & LSR_THRE))
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;
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/* Send the character */
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writel(c, EARLY_UART + UART_THR);
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/* Wait to make sure it hits the line */
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while (!(readl(EARLY_UART + UART_LSR) & LSR_THRE))
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;
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}
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#endif
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