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,
30 #ifdef CONFIG_KIRKWOOD
31 #include <asm/arch/kirkwood.h>
34 #include <asm/arch/orion5x.h>
37 #if defined (CONFIG_SERIAL_MULTI)
41 DECLARE_GLOBAL_DATA_PTR;
43 #if !defined(CONFIG_CONS_INDEX)
44 #if defined (CONFIG_SERIAL_MULTI)
45 /* with CONFIG_SERIAL_MULTI we might have no console
49 #error "No console index specified."
50 #endif /* CONFIG_SERIAL_MULTI */
51 #elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 4)
52 #error "Invalid console index value."
55 #if CONFIG_CONS_INDEX == 1 && !defined(CONFIG_SYS_NS16550_COM1)
56 #error "Console port 1 defined but not configured."
57 #elif CONFIG_CONS_INDEX == 2 && !defined(CONFIG_SYS_NS16550_COM2)
58 #error "Console port 2 defined but not configured."
59 #elif CONFIG_CONS_INDEX == 3 && !defined(CONFIG_SYS_NS16550_COM3)
60 #error "Console port 3 defined but not configured."
61 #elif CONFIG_CONS_INDEX == 4 && !defined(CONFIG_SYS_NS16550_COM4)
62 #error "Console port 4 defined but not configured."
65 /* Note: The port number specified in the functions is 1 based.
66 * the array is 0 based.
68 static NS16550_t serial_ports[4] = {
69 #ifdef CONFIG_SYS_NS16550_COM1
70 (NS16550_t)CONFIG_SYS_NS16550_COM1,
74 #ifdef CONFIG_SYS_NS16550_COM2
75 (NS16550_t)CONFIG_SYS_NS16550_COM2,
79 #ifdef CONFIG_SYS_NS16550_COM3
80 (NS16550_t)CONFIG_SYS_NS16550_COM3,
84 #ifdef CONFIG_SYS_NS16550_COM4
85 (NS16550_t)CONFIG_SYS_NS16550_COM4
91 #define PORT serial_ports[port-1]
92 #if defined(CONFIG_CONS_INDEX)
93 #define CONSOLE (serial_ports[CONFIG_CONS_INDEX-1])
96 #if defined(CONFIG_SERIAL_MULTI)
98 /* Multi serial device functions */
99 #define DECLARE_ESERIAL_FUNCTIONS(port) \
100 int eserial##port##_init (void) {\
102 clock_divisor = calc_divisor(serial_ports[port-1]); \
103 NS16550_init(serial_ports[port-1], clock_divisor); \
105 void eserial##port##_setbrg (void) {\
106 serial_setbrg_dev(port);}\
107 int eserial##port##_getc (void) {\
108 return serial_getc_dev(port);}\
109 int eserial##port##_tstc (void) {\
110 return serial_tstc_dev(port);}\
111 void eserial##port##_putc (const char c) {\
112 serial_putc_dev(port, c);}\
113 void eserial##port##_puts (const char *s) {\
114 serial_puts_dev(port, s);}
116 /* Serial device descriptor */
117 #define INIT_ESERIAL_STRUCTURE(port,name,bus) {\
120 eserial##port##_init,\
122 eserial##port##_setbrg,\
123 eserial##port##_getc,\
124 eserial##port##_tstc,\
125 eserial##port##_putc,\
126 eserial##port##_puts, }
128 #endif /* CONFIG_SERIAL_MULTI */
130 static int calc_divisor (NS16550_t port)
132 #ifdef CONFIG_OMAP1510
133 /* If can't cleanly clock 115200 set div to 1 */
134 if ((CONFIG_SYS_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) {
135 port->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */
136 return (1); /* return 1 for base divisor */
138 port->osc_12m_sel = 0; /* clear if previsouly set */
140 #ifdef CONFIG_OMAP1610
141 /* If can't cleanly clock 115200 set div to 1 */
142 if ((CONFIG_SYS_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) {
143 return (26); /* return 26 for base divisor */
148 #define MODE_X_DIV 13
150 #define MODE_X_DIV 16
153 /* Compute divisor value. Normally, we should simply return:
154 * CONFIG_SYS_NS16550_CLK) / MODE_X_DIV / gd->baudrate
155 * but we need to round that value by adding 0.5.
156 * Rounding is especially important at high baud rates.
158 return (CONFIG_SYS_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) /
159 (MODE_X_DIV * gd->baudrate);
162 #if !defined(CONFIG_SERIAL_MULTI)
163 int serial_init (void)
167 #ifdef CONFIG_NS87308
168 initialise_ns87308();
171 #ifdef CONFIG_SYS_NS16550_COM1
172 clock_divisor = calc_divisor(serial_ports[0]);
173 NS16550_init(serial_ports[0], clock_divisor);
175 #ifdef CONFIG_SYS_NS16550_COM2
176 clock_divisor = calc_divisor(serial_ports[1]);
177 NS16550_init(serial_ports[1], clock_divisor);
179 #ifdef CONFIG_SYS_NS16550_COM3
180 clock_divisor = calc_divisor(serial_ports[2]);
181 NS16550_init(serial_ports[2], clock_divisor);
183 #ifdef CONFIG_SYS_NS16550_COM4
184 clock_divisor = calc_divisor(serial_ports[3]);
185 NS16550_init(serial_ports[3], clock_divisor);
193 _serial_putc(const char c,const int port)
196 NS16550_putc(PORT, '\r');
198 NS16550_putc(PORT, c);
202 _serial_putc_raw(const char c,const int port)
204 NS16550_putc(PORT, c);
208 _serial_puts (const char *s,const int port)
211 _serial_putc (*s++,port);
217 _serial_getc(const int port)
219 return NS16550_getc(PORT);
223 _serial_tstc(const int port)
225 return NS16550_tstc(PORT);
229 _serial_setbrg (const int port)
233 clock_divisor = calc_divisor(PORT);
234 NS16550_reinit(PORT, clock_divisor);
237 #if defined(CONFIG_SERIAL_MULTI)
239 serial_putc_dev(unsigned int dev_index,const char c)
241 _serial_putc(c,dev_index);
245 serial_putc(const char c)
247 _serial_putc(c,CONFIG_CONS_INDEX);
251 #if defined(CONFIG_SERIAL_MULTI)
253 serial_putc_raw_dev(unsigned int dev_index,const char c)
255 _serial_putc_raw(c,dev_index);
259 serial_putc_raw(const char c)
261 _serial_putc_raw(c,CONFIG_CONS_INDEX);
265 #if defined(CONFIG_SERIAL_MULTI)
267 serial_puts_dev(unsigned int dev_index,const char *s)
269 _serial_puts(s,dev_index);
273 serial_puts(const char *s)
275 _serial_puts(s,CONFIG_CONS_INDEX);
279 #if defined(CONFIG_SERIAL_MULTI)
281 serial_getc_dev(unsigned int dev_index)
283 return _serial_getc(dev_index);
289 return _serial_getc(CONFIG_CONS_INDEX);
293 #if defined(CONFIG_SERIAL_MULTI)
295 serial_tstc_dev(unsigned int dev_index)
297 return _serial_tstc(dev_index);
303 return _serial_tstc(CONFIG_CONS_INDEX);
307 #if defined(CONFIG_SERIAL_MULTI)
309 serial_setbrg_dev(unsigned int dev_index)
311 _serial_setbrg(dev_index);
317 _serial_setbrg(CONFIG_CONS_INDEX);
321 #if defined(CONFIG_SERIAL_MULTI)
323 DECLARE_ESERIAL_FUNCTIONS(1);
324 struct serial_device eserial1_device =
325 INIT_ESERIAL_STRUCTURE(1,"eserial0","EUART1");
326 DECLARE_ESERIAL_FUNCTIONS(2);
327 struct serial_device eserial2_device =
328 INIT_ESERIAL_STRUCTURE(2,"eserial1","EUART2");
329 DECLARE_ESERIAL_FUNCTIONS(3);
330 struct serial_device eserial3_device =
331 INIT_ESERIAL_STRUCTURE(3,"eserial2","EUART3");
332 DECLARE_ESERIAL_FUNCTIONS(4);
333 struct serial_device eserial4_device =
334 INIT_ESERIAL_STRUCTURE(4,"eserial3","EUART4");
335 #endif /* CONFIG_SERIAL_MULTI */