mirror of https://gitee.com/openkylin/linux.git
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
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/*
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* arch/arm/mach-at91/include/mach/uncompress.h
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*
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* Copyright (C) 2003 SAN People
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __ASM_ARCH_UNCOMPRESS_H
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#define __ASM_ARCH_UNCOMPRESS_H
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#include <asm/io.h>
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#include <linux/atmel_serial.h>
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#if defined(CONFIG_AT91_EARLY_DBGU)
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#define UART_OFFSET (AT91_DBGU + AT91_BASE_SYS)
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#elif defined(CONFIG_AT91_EARLY_USART0)
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#define UART_OFFSET AT91_USART0
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#elif defined(CONFIG_AT91_EARLY_USART1)
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#define UART_OFFSET AT91_USART1
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#elif defined(CONFIG_AT91_EARLY_USART2)
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#define UART_OFFSET AT91_USART2
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#elif defined(CONFIG_AT91_EARLY_USART3)
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#define UART_OFFSET AT91_USART3
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#elif defined(CONFIG_AT91_EARLY_USART4)
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#define UART_OFFSET AT91_USART4
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#elif defined(CONFIG_AT91_EARLY_USART5)
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#define UART_OFFSET AT91_USART5
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#endif
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/*
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* The following code assumes the serial port has already been
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* initialized by the bootloader. If you didn't setup a port in
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* your bootloader then nothing will appear (which might be desired).
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*
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* This does not append a newline
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*/
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static void putc(int c)
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{
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#ifdef UART_OFFSET
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void __iomem *sys = (void __iomem *) UART_OFFSET; /* physical address */
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while (!(__raw_readl(sys + ATMEL_US_CSR) & ATMEL_US_TXRDY))
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barrier();
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__raw_writel(c, sys + ATMEL_US_THR);
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#endif
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}
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static inline void flush(void)
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{
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#ifdef UART_OFFSET
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void __iomem *sys = (void __iomem *) UART_OFFSET; /* physical address */
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/* wait for transmission to complete */
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while (!(__raw_readl(sys + ATMEL_US_CSR) & ATMEL_US_TXEMPTY))
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barrier();
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#endif
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}
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#define arch_decomp_setup()
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#define arch_decomp_wdog()
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#endif
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