3 * Rob Taylor, Flying Pig Systems. robt@flyingpig.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,
26 #ifdef CFG_NS16550_SERIAL
33 DECLARE_GLOBAL_DATA_PTR;
35 #if !defined(CONFIG_CONS_INDEX)
36 #error "No console index specified."
37 #elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 4)
38 #error "Invalid console index value."
41 #if CONFIG_CONS_INDEX == 1 && !defined(CFG_NS16550_COM1)
42 #error "Console port 1 defined but not configured."
43 #elif CONFIG_CONS_INDEX == 2 && !defined(CFG_NS16550_COM2)
44 #error "Console port 2 defined but not configured."
45 #elif CONFIG_CONS_INDEX == 3 && !defined(CFG_NS16550_COM3)
46 #error "Console port 3 defined but not configured."
47 #elif CONFIG_CONS_INDEX == 4 && !defined(CFG_NS16550_COM4)
48 #error "Console port 4 defined but not configured."
51 /* Note: The port number specified in the functions is 1 based.
52 * the array is 0 based.
54 static NS16550_t serial_ports[4] = {
55 #ifdef CFG_NS16550_COM1
56 (NS16550_t)CFG_NS16550_COM1,
60 #ifdef CFG_NS16550_COM2
61 (NS16550_t)CFG_NS16550_COM2,
65 #ifdef CFG_NS16550_COM3
66 (NS16550_t)CFG_NS16550_COM3,
70 #ifdef CFG_NS16550_COM4
71 (NS16550_t)CFG_NS16550_COM4
77 #define PORT serial_ports[port-1]
78 #define CONSOLE (serial_ports[CONFIG_CONS_INDEX-1])
80 static int calc_divisor (NS16550_t port)
82 #ifdef CONFIG_OMAP1510
83 /* If can't cleanly clock 115200 set div to 1 */
84 if ((CFG_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) {
85 port->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */
86 return (1); /* return 1 for base divisor */
88 port->osc_12m_sel = 0; /* clear if previsouly set */
90 #ifdef CONFIG_OMAP1610
91 /* If can't cleanly clock 115200 set div to 1 */
92 if ((CFG_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) {
93 return (26); /* return 26 for base divisor */
100 #define MODE_X_DIV 16
102 return (CFG_NS16550_CLK / MODE_X_DIV / gd->baudrate);
106 int serial_init (void)
111 initialise_ns87308();
114 #ifdef CFG_NS16550_COM1
115 clock_divisor = calc_divisor(serial_ports[0]);
116 NS16550_init(serial_ports[0], clock_divisor);
118 #ifdef CFG_NS16550_COM2
119 clock_divisor = calc_divisor(serial_ports[1]);
120 NS16550_init(serial_ports[1], clock_divisor);
122 #ifdef CFG_NS16550_COM3
123 clock_divisor = calc_divisor(serial_ports[2]);
124 NS16550_init(serial_ports[2], clock_divisor);
126 #ifdef CFG_NS16550_COM4
127 clock_divisor = calc_divisor(serial_ports[3]);
128 NS16550_init(serial_ports[3], clock_divisor);
135 _serial_putc(const char c,const int port)
138 NS16550_putc(PORT, '\r');
140 NS16550_putc(PORT, c);
144 _serial_putc_raw(const char c,const int port)
146 NS16550_putc(PORT, c);
150 _serial_puts (const char *s,const int port)
153 _serial_putc (*s++,port);
159 _serial_getc(const int port)
161 return NS16550_getc(PORT);
165 _serial_tstc(const int port)
167 return NS16550_tstc(PORT);
171 _serial_setbrg (const int port)
175 clock_divisor = calc_divisor(PORT);
176 NS16550_reinit(PORT, clock_divisor);
180 serial_putc(const char c)
182 _serial_putc(c,CONFIG_CONS_INDEX);
186 serial_putc_raw(const char c)
188 _serial_putc_raw(c,CONFIG_CONS_INDEX);
192 serial_puts(const char *s)
194 _serial_puts(s,CONFIG_CONS_INDEX);
200 return _serial_getc(CONFIG_CONS_INDEX);
206 return _serial_tstc(CONFIG_CONS_INDEX);
212 _serial_setbrg(CONFIG_CONS_INDEX);