2 * (C) Copyright 2003, 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 #if defined(CONFIG_CONSOLE_JTAG)
36 static nios_jtag_t *jtag = (nios_jtag_t *)CFG_NIOS_CONSOLE;
38 void serial_setbrg( void ){ return; }
39 int serial_init( void ) { return(0);}
41 void serial_putc (char c)
43 while ((jtag->txcntl & NIOS_JTAG_TRDY) != 0)
45 jtag->txcntl = NIOS_JTAG_TRDY | (unsigned char)c;
48 void serial_puts (const char *s)
54 int serial_tstc (void)
56 return (jtag->rxcntl & NIOS_JTAG_RRDY);
59 int serial_getc (void)
62 while (serial_tstc() == 0)
64 c = jtag->rxcntl & 0x0ff;
69 /*------------------------------------------------------------------
70 * UART the serial port
71 *-----------------------------------------------------------------*/
74 static nios_uart_t *uart = (nios_uart_t *)CFG_NIOS_CONSOLE;
76 #if defined(CFG_NIOS_FIXEDBAUD)
78 /* Everything's already setup for fixed-baud PTF
81 void serial_setbrg (void){ return; }
82 int serial_init (void) { return (0);}
86 void serial_setbrg (void)
90 div = (CONFIG_SYS_CLK_FREQ/gd->baudrate)-1;
95 int serial_init (void)
101 #endif /* CFG_NIOS_FIXEDBAUD */
104 /*-----------------------------------------------------------------------
106 *---------------------------------------------------------------------*/
107 void serial_putc (char c)
111 while ((uart->status & NIOS_UART_TRDY) == 0)
113 uart->txdata = (unsigned char)c;
116 void serial_puts (const char *s)
123 int serial_tstc (void)
125 return (uart->status & NIOS_UART_RRDY);
128 int serial_getc (void)
130 while (serial_tstc () == 0)
132 return( uart->rxdata & 0x00ff );
135 #endif /* CONFIG_JTAG_CONSOLE */