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wdenk78f66222002-08-27 10:27:51 +00001/*
2 * (C) Copyright 2000
3 * Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25
26#ifdef CFG_NS16550_SERIAL
27
28#include <ns16550.h>
29#ifdef CFG_NS87308
30#include <ns87308.h>
31#endif
32
Wolfgang Denk0fd30252006-08-30 23:02:10 +020033#if defined (CONFIG_SERIAL_MULTI)
34#include <serial.h>
35#endif
36
Wolfgang Denkd87080b2006-03-31 18:32:53 +020037DECLARE_GLOBAL_DATA_PTR;
38
wdenk756f5862005-04-03 15:51:42 +000039#if !defined(CONFIG_CONS_INDEX)
Wolfgang Denk0fd30252006-08-30 23:02:10 +020040#if defined (CONFIG_SERIAL_MULTI)
41/* with CONFIG_SERIAL_MULTI we might have no console
Wolfgang Denk511d0c72006-10-09 00:42:01 +020042 * on these devices
Wolfgang Denk0fd30252006-08-30 23:02:10 +020043 */
44#else
wdenk756f5862005-04-03 15:51:42 +000045#error "No console index specified."
Wolfgang Denk0fd30252006-08-30 23:02:10 +020046#endif /* CONFIG_SERIAL_MULTI */
wdenk756f5862005-04-03 15:51:42 +000047#elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 4)
48#error "Invalid console index value."
wdenk78f66222002-08-27 10:27:51 +000049#endif
50
wdenk756f5862005-04-03 15:51:42 +000051#if CONFIG_CONS_INDEX == 1 && !defined(CFG_NS16550_COM1)
52#error "Console port 1 defined but not configured."
53#elif CONFIG_CONS_INDEX == 2 && !defined(CFG_NS16550_COM2)
54#error "Console port 2 defined but not configured."
55#elif CONFIG_CONS_INDEX == 3 && !defined(CFG_NS16550_COM3)
56#error "Console port 3 defined but not configured."
57#elif CONFIG_CONS_INDEX == 4 && !defined(CFG_NS16550_COM4)
58#error "Console port 4 defined but not configured."
59#endif
60
61/* Note: The port number specified in the functions is 1 based.
62 * the array is 0 based.
63 */
64static NS16550_t serial_ports[4] = {
65#ifdef CFG_NS16550_COM1
66 (NS16550_t)CFG_NS16550_COM1,
67#else
68 NULL,
69#endif
70#ifdef CFG_NS16550_COM2
71 (NS16550_t)CFG_NS16550_COM2,
72#else
73 NULL,
74#endif
75#ifdef CFG_NS16550_COM3
76 (NS16550_t)CFG_NS16550_COM3,
77#else
78 NULL,
79#endif
80#ifdef CFG_NS16550_COM4
81 (NS16550_t)CFG_NS16550_COM4
82#else
83 NULL
84#endif
85};
86
87#define PORT serial_ports[port-1]
Wolfgang Denk0fd30252006-08-30 23:02:10 +020088#if defined(CONFIG_CONS_INDEX)
wdenk756f5862005-04-03 15:51:42 +000089#define CONSOLE (serial_ports[CONFIG_CONS_INDEX-1])
Wolfgang Denk0fd30252006-08-30 23:02:10 +020090#endif
91
92#if defined(CONFIG_SERIAL_MULTI)
93
94/* Multi serial device functions */
95#define DECLARE_ESERIAL_FUNCTIONS(port) \
96 int eserial##port##_init (void) {\
97 int clock_divisor; \
98 clock_divisor = calc_divisor(serial_ports[port-1]); \
99 NS16550_init(serial_ports[port-1], clock_divisor); \
100 return(0);}\
101 void eserial##port##_setbrg (void) {\
102 serial_setbrg_dev(port);}\
103 int eserial##port##_getc (void) {\
104 return serial_getc_dev(port);}\
105 int eserial##port##_tstc (void) {\
106 return serial_tstc_dev(port);}\
107 void eserial##port##_putc (const char c) {\
108 serial_putc_dev(port, c);}\
109 void eserial##port##_puts (const char *s) {\
110 serial_puts_dev(port, s);}
111
112/* Serial device descriptor */
113#define INIT_ESERIAL_STRUCTURE(port,name,bus) {\
114 name,\
115 bus,\
116 eserial##port##_init,\
117 eserial##port##_setbrg,\
118 eserial##port##_getc,\
119 eserial##port##_tstc,\
120 eserial##port##_putc,\
121 eserial##port##_puts, }
122
123#endif /* CONFIG_SERIAL_MULTI */
wdenk756f5862005-04-03 15:51:42 +0000124
125static int calc_divisor (NS16550_t port)
wdenk78f66222002-08-27 10:27:51 +0000126{
wdenk2e5983d2003-07-15 20:04:06 +0000127#ifdef CONFIG_OMAP1510
128 /* If can't cleanly clock 115200 set div to 1 */
129 if ((CFG_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) {
wdenk756f5862005-04-03 15:51:42 +0000130 port->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */
wdenk2e5983d2003-07-15 20:04:06 +0000131 return (1); /* return 1 for base divisor */
132 }
wdenk756f5862005-04-03 15:51:42 +0000133 port->osc_12m_sel = 0; /* clear if previsouly set */
wdenk2e5983d2003-07-15 20:04:06 +0000134#endif
wdenk6f213472003-08-29 22:00:43 +0000135#ifdef CONFIG_OMAP1610
136 /* If can't cleanly clock 115200 set div to 1 */
137 if ((CFG_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) {
138 return (26); /* return 26 for base divisor */
139 }
140#endif
wdenk8ed96042005-01-09 23:16:25 +0000141
142#ifdef CONFIG_APTIX
143#define MODE_X_DIV 13
144#else
145#define MODE_X_DIV 16
146#endif
wdenk8ed96042005-01-09 23:16:25 +0000147
Hugo Villeneuve89134ea2008-07-08 14:54:58 -0400148 /* Compute divisor value. Normally, we should simply return:
149 * CFG_NS16550_CLK) / MODE_X_DIV / gd->baudrate
Hugo Villeneuvebcab74b2008-07-15 11:23:02 -0400150 * but we need to round that value by adding 0.5.
Hugo Villeneuve89134ea2008-07-08 14:54:58 -0400151 * Rounding is especially important at high baud rates.
152 */
Hugo Villeneuvebcab74b2008-07-15 11:23:02 -0400153 return (CFG_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) /
154 (MODE_X_DIV * gd->baudrate);
wdenk2e5983d2003-07-15 20:04:06 +0000155}
wdenk78f66222002-08-27 10:27:51 +0000156
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200157#if !defined(CONFIG_SERIAL_MULTI)
wdenk2e5983d2003-07-15 20:04:06 +0000158int serial_init (void)
159{
wdenk756f5862005-04-03 15:51:42 +0000160 int clock_divisor;
wdenk78f66222002-08-27 10:27:51 +0000161
162#ifdef CFG_NS87308
163 initialise_ns87308();
164#endif
165
wdenk756f5862005-04-03 15:51:42 +0000166#ifdef CFG_NS16550_COM1
167 clock_divisor = calc_divisor(serial_ports[0]);
168 NS16550_init(serial_ports[0], clock_divisor);
169#endif
170#ifdef CFG_NS16550_COM2
171 clock_divisor = calc_divisor(serial_ports[1]);
172 NS16550_init(serial_ports[1], clock_divisor);
173#endif
174#ifdef CFG_NS16550_COM3
175 clock_divisor = calc_divisor(serial_ports[2]);
176 NS16550_init(serial_ports[2], clock_divisor);
177#endif
178#ifdef CFG_NS16550_COM4
179 clock_divisor = calc_divisor(serial_ports[3]);
180 NS16550_init(serial_ports[3], clock_divisor);
181#endif
wdenk78f66222002-08-27 10:27:51 +0000182
183 return (0);
184}
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200185#endif
wdenk78f66222002-08-27 10:27:51 +0000186
187void
wdenk756f5862005-04-03 15:51:42 +0000188_serial_putc(const char c,const int port)
wdenk78f66222002-08-27 10:27:51 +0000189{
190 if (c == '\n')
wdenk756f5862005-04-03 15:51:42 +0000191 NS16550_putc(PORT, '\r');
wdenk78f66222002-08-27 10:27:51 +0000192
wdenk756f5862005-04-03 15:51:42 +0000193 NS16550_putc(PORT, c);
wdenk78f66222002-08-27 10:27:51 +0000194}
195
196void
wdenk756f5862005-04-03 15:51:42 +0000197_serial_putc_raw(const char c,const int port)
198{
199 NS16550_putc(PORT, c);
200}
201
202void
203_serial_puts (const char *s,const int port)
wdenk78f66222002-08-27 10:27:51 +0000204{
205 while (*s) {
wdenk756f5862005-04-03 15:51:42 +0000206 _serial_putc (*s++,port);
wdenk78f66222002-08-27 10:27:51 +0000207 }
208}
209
210
211int
wdenk756f5862005-04-03 15:51:42 +0000212_serial_getc(const int port)
213{
214 return NS16550_getc(PORT);
215}
216
217int
218_serial_tstc(const int port)
219{
220 return NS16550_tstc(PORT);
221}
222
223void
224_serial_setbrg (const int port)
225{
226 int clock_divisor;
227
228 clock_divisor = calc_divisor(PORT);
229 NS16550_reinit(PORT, clock_divisor);
230}
231
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200232#if defined(CONFIG_SERIAL_MULTI)
233static inline void
234serial_putc_dev(unsigned int dev_index,const char c)
235{
236 _serial_putc(c,dev_index);
237}
238#else
wdenk756f5862005-04-03 15:51:42 +0000239void
240serial_putc(const char c)
241{
242 _serial_putc(c,CONFIG_CONS_INDEX);
243}
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200244#endif
wdenk756f5862005-04-03 15:51:42 +0000245
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200246#if defined(CONFIG_SERIAL_MULTI)
Wolfgang Denk511d0c72006-10-09 00:42:01 +0200247static inline void
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200248serial_putc_raw_dev(unsigned int dev_index,const char c)
249{
250 _serial_putc_raw(c,dev_index);
251}
252#else
wdenk756f5862005-04-03 15:51:42 +0000253void
254serial_putc_raw(const char c)
255{
256 _serial_putc_raw(c,CONFIG_CONS_INDEX);
257}
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200258#endif
wdenk756f5862005-04-03 15:51:42 +0000259
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200260#if defined(CONFIG_SERIAL_MULTI)
261static inline void
262serial_puts_dev(unsigned int dev_index,const char *s)
263{
264 _serial_puts(s,dev_index);
265}
266#else
wdenk756f5862005-04-03 15:51:42 +0000267void
268serial_puts(const char *s)
269{
270 _serial_puts(s,CONFIG_CONS_INDEX);
271}
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200272#endif
wdenk756f5862005-04-03 15:51:42 +0000273
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200274#if defined(CONFIG_SERIAL_MULTI)
275static inline int
276serial_getc_dev(unsigned int dev_index)
277{
278 return _serial_getc(dev_index);
279}
280#else
wdenk756f5862005-04-03 15:51:42 +0000281int
wdenk78f66222002-08-27 10:27:51 +0000282serial_getc(void)
283{
wdenk756f5862005-04-03 15:51:42 +0000284 return _serial_getc(CONFIG_CONS_INDEX);
wdenk78f66222002-08-27 10:27:51 +0000285}
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200286#endif
wdenk78f66222002-08-27 10:27:51 +0000287
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200288#if defined(CONFIG_SERIAL_MULTI)
289static inline int
290serial_tstc_dev(unsigned int dev_index)
291{
292 return _serial_tstc(dev_index);
293}
294#else
wdenk78f66222002-08-27 10:27:51 +0000295int
296serial_tstc(void)
297{
wdenk756f5862005-04-03 15:51:42 +0000298 return _serial_tstc(CONFIG_CONS_INDEX);
wdenk78f66222002-08-27 10:27:51 +0000299}
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200300#endif
wdenk78f66222002-08-27 10:27:51 +0000301
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200302#if defined(CONFIG_SERIAL_MULTI)
303static inline void
304serial_setbrg_dev(unsigned int dev_index)
305{
306 _serial_setbrg(dev_index);
307}
308#else
wdenk78f66222002-08-27 10:27:51 +0000309void
wdenk756f5862005-04-03 15:51:42 +0000310serial_setbrg(void)
wdenk78f66222002-08-27 10:27:51 +0000311{
wdenk756f5862005-04-03 15:51:42 +0000312 _serial_setbrg(CONFIG_CONS_INDEX);
wdenk78f66222002-08-27 10:27:51 +0000313}
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200314#endif
315
316#if defined(CONFIG_SERIAL_MULTI)
317
318DECLARE_ESERIAL_FUNCTIONS(1);
Wolfgang Denk511d0c72006-10-09 00:42:01 +0200319struct serial_device eserial1_device =
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200320 INIT_ESERIAL_STRUCTURE(1,"eserial0","EUART1");
321DECLARE_ESERIAL_FUNCTIONS(2);
322struct serial_device eserial2_device =
323 INIT_ESERIAL_STRUCTURE(2,"eserial1","EUART2");
324DECLARE_ESERIAL_FUNCTIONS(3);
325struct serial_device eserial3_device =
326 INIT_ESERIAL_STRUCTURE(3,"eserial2","EUART3");
327DECLARE_ESERIAL_FUNCTIONS(4);
328struct serial_device eserial4_device =
329 INIT_ESERIAL_STRUCTURE(4,"eserial3","EUART4");
330#endif /* CONFIG_SERIAL_MULTI */
wdenk78f66222002-08-27 10:27:51 +0000331
332#endif