53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/*
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* (C) Copyright 2011 - Franck JULLIEN <elec4fun@gmail.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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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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#include <stdio.h>
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#include <common.h>
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#include <asm/nios2-io.h>
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#include <io.h>
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void early_putc(char ch)
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{
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struct nios_uart *uart = (struct nios_uart *)NIOS_SOPC_UART_BASE;
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while ((readl(&uart->status) & NIOS_UART_TRDY) == 0);
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writel((unsigned char)ch, &uart->txdata);
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}
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void early_puts(const char *s)
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{
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while (*s != 0)
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early_putc(*s++);
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}
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int early_printf(const char *fmt, ...)
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{
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va_list args;
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uint i;
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char printbuffer[50];
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va_start(args, fmt);
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i = vsprintf(printbuffer, fmt, args);
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va_end(args);
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early_puts(printbuffer);
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return 0;
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}
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