76 строки
1.9 KiB
C
76 строки
1.9 KiB
C
/*
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* arch/arm/mach-netx/include/mach/uncompress.h
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*
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* Copyright (C) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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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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* 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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/*
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* The following code assumes the serial port has already been
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* initialized by the bootloader. We search for the first enabled
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* port in the most probable order. 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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#define REG(x) (*(volatile unsigned long *)(x))
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#define UART1_BASE 0x100a00
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#define UART2_BASE 0x100a80
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#define UART_DR 0x0
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#define UART_CR 0x14
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#define CR_UART_EN (1<<0)
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#define UART_FR 0x18
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#define FR_BUSY (1<<3)
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#define FR_TXFF (1<<5)
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static void putc(char c)
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{
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unsigned long base;
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if (REG(UART1_BASE + UART_CR) & CR_UART_EN)
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base = UART1_BASE;
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else if (REG(UART2_BASE + UART_CR) & CR_UART_EN)
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base = UART2_BASE;
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else
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return;
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while (REG(base + UART_FR) & FR_TXFF);
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REG(base + UART_DR) = c;
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}
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static inline void flush(void)
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{
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unsigned long base;
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if (REG(UART1_BASE + UART_CR) & CR_UART_EN)
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base = UART1_BASE;
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else if (REG(UART2_BASE + UART_CR) & CR_UART_EN)
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base = UART2_BASE;
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else
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return;
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while (REG(base + UART_FR) & FR_BUSY);
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}
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/*
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* nothing to do
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*/
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#define arch_decomp_setup()
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