mirror of
https://github.com/AsahiLinux/u-boot
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139 lines
2.7 KiB
C
139 lines
2.7 KiB
C
/*
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* (C) Copyright 2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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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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* 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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#include <config.h>
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#include <common.h>
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#include "sconsole.h"
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DECLARE_GLOBAL_DATA_PTR;
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void (*sconsole_putc) (char) = 0;
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void (*sconsole_puts) (const char *) = 0;
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int (*sconsole_getc) (void) = 0;
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int (*sconsole_tstc) (void) = 0;
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void (*sconsole_setbrg) (void) = 0;
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int serial_init (void)
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{
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sconsole_buffer_t *sb = SCONSOLE_BUFFER;
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sb->pos = 0;
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sb->size = 0;
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sb->baud = gd->baudrate;
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sb->max_size = CONFIG_SYS_SCONSOLE_SIZE - sizeof (sconsole_buffer_t);
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return (0);
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}
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void serial_putc (char c)
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{
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if (sconsole_putc) {
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(*sconsole_putc) (c);
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} else {
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sconsole_buffer_t *sb = SCONSOLE_BUFFER;
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if (c) {
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sb->data[sb->pos++] = c;
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if (sb->pos == sb->max_size) {
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sb->pos = 0;
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}
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if (sb->size < sb->max_size) {
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sb->size++;
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}
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}
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}
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}
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void serial_puts (const char *s)
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{
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if (sconsole_puts) {
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(*sconsole_puts) (s);
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} else {
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sconsole_buffer_t *sb = SCONSOLE_BUFFER;
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while (*s) {
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sb->data[sb->pos++] = *s++;
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if (sb->pos == sb->max_size) {
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sb->pos = 0;
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}
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if (sb->size < sb->max_size) {
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sb->size++;
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}
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}
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}
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}
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int serial_getc (void)
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{
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if (sconsole_getc) {
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return (*sconsole_getc) ();
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} else {
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return 0;
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}
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}
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int serial_tstc (void)
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{
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if (sconsole_tstc) {
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return (*sconsole_tstc) ();
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} else {
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return 0;
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}
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}
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void serial_setbrg (void)
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{
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if (sconsole_setbrg) {
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(*sconsole_setbrg) ();
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} else {
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sconsole_buffer_t *sb = SCONSOLE_BUFFER;
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sb->baud = gd->baudrate;
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}
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}
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int sconsole_get_baudrate (void)
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{
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sconsole_buffer_t *sb = SCONSOLE_BUFFER;
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return sb->baud;
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}
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void sconsole_flush (void)
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{
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if (sconsole_putc) {
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sconsole_buffer_t *sb = SCONSOLE_BUFFER;
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unsigned int end = sb->pos < sb->size
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? sb->pos + sb->max_size - sb->size
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: sb->pos - sb->size;
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while (sb->size) {
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(*sconsole_putc) (sb->data[end++]);
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if (end == sb->max_size) {
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end = 0;
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}
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sb->size--;
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}
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}
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}
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