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https://github.com/AsahiLinux/u-boot
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7accb6ea56
This uart simply writes to stdout and reads from stdin. We might imagine instead buffering the data so that a test interface can check output and inject input. Signed-off-by: Simon Glass <sjg@chromium.org>
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/*
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* Copyright (c) 2011 The Chromium OS Authors.
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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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* 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,
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* MA 02111-1307 USA
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*/
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/*
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* This provide a test serial port. It provides an emulated serial port where
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* a test program and read out the serial output and inject serial input for
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* U-Boot.
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*/
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#include <common.h>
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#include <os.h>
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int serial_init(void)
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{
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return 0;
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}
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void serial_setbrg(void)
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{
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}
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void serial_putc(const char ch)
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{
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os_write(1, &ch, 1);
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}
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void serial_puts(const char *str)
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{
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while (*str)
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serial_putc(*str++);
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}
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int serial_getc(void)
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{
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char buf;
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int count;
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count = os_read(0, &buf, 1);
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return count == 1 ? buf : 0;
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}
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int serial_tstc(void)
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{
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return 0;
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}
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