2 * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
3 * Scott McNutt <smcnutt@psyent.com>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 DECLARE_GLOBAL_DATA_PTR;
31 /*------------------------------------------------------------------
32 * JTAG acts as the serial port
33 *-----------------------------------------------------------------*/
34 static nios_jtag_t *jtag = (nios_jtag_t *)CONFIG_SYS_NIOS_CONSOLE;
36 void serial_setbrg( void ){ return; }
37 int serial_init( void ) { return(0);}
39 void serial_putc (char c)
42 unsigned st = readl(&jtag->control);
43 if (NIOS_JTAG_WSPACE(st))
45 #ifdef CONFIG_ALTERA_JTAG_UART_BYPASS
46 if (!(st & NIOS_JTAG_AC)) /* no connection */
51 writel ((unsigned char)c, &jtag->data);
54 void serial_puts (const char *s)
60 int serial_tstc (void)
62 return ( readl (&jtag->control) & NIOS_JTAG_RRDY);
65 int serial_getc (void)
72 val = readl (&jtag->data);
73 if (val & NIOS_JTAG_RVALID)