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wdenk281e00a2004-08-01 22:48:16 +00001/*
2 * (C) Copyright 2004
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#include <serial.h>
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +020026#include <stdio_dev.h>
Mike Frysinger7b826c22011-05-14 06:56:15 +000027#include <post.h>
28#include <linux/compiler.h>
wdenk281e00a2004-08-01 22:48:16 +000029
Wolfgang Denkd87080b2006-03-31 18:32:53 +020030DECLARE_GLOBAL_DATA_PTR;
31
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +000032static struct serial_device *serial_devices;
33static struct serial_device *serial_current;
wdenk281e00a2004-08-01 22:48:16 +000034
Marek Vasut2a333ae2012-09-12 17:49:58 +020035static void serial_null(void)
36{
37}
38
39#define serial_initfunc(name) \
40 void name(void) \
41 __attribute__((weak, alias("serial_null")));
42
Marek Vasutf0eb1f62012-09-12 13:50:56 +020043serial_initfunc(mpc8xx_serial_initialize);
Marek Vasutabc0ed82012-09-12 20:02:05 +020044serial_initfunc(ns16550_serial_initialize);
Marek Vasut1fe5c112012-09-12 13:57:58 +020045serial_initfunc(pxa_serial_initialize);
Marek Vasut28af6382012-09-12 16:01:16 +020046serial_initfunc(s3c24xx_serial_initialize);
Marek Vasutb4980512012-09-12 19:39:57 +020047serial_initfunc(s5p_serial_initialize);
Tom Rini51d81022012-10-08 14:46:23 -070048serial_initfunc(zynq_serial_initalize);
Marek Vasut5ae1de02012-09-12 20:07:54 +020049serial_initfunc(bfin_serial_initialize);
Marek Vasut41651ca2012-09-13 00:02:54 +020050serial_initfunc(bfin_jtag_initialize);
Marek Vasut918327c2012-09-12 19:50:18 +020051serial_initfunc(mpc512x_serial_initialize);
Marek Vasut87d69222012-09-12 19:45:58 +020052serial_initfunc(uartlite_serial_initialize);
Marek Vasut7b953c52012-09-13 01:16:50 +020053serial_initfunc(au1x00_serial_initialize);
Marek Vasut01911422012-09-13 01:20:07 +020054serial_initfunc(asc_serial_initialize);
Marek Vasut6cb32732012-09-13 01:20:59 +020055serial_initfunc(jz_serial_initialize);
Marek Vasutb57c6522012-09-13 01:26:42 +020056serial_initfunc(mpc5xx_serial_initialize);
Marek Vasut2063a542012-09-13 01:29:31 +020057serial_initfunc(mpc8220_serial_initialize);
Marek Vasutd68f4da2012-09-13 01:34:16 +020058serial_initfunc(mpc8260_scc_serial_initialize);
59serial_initfunc(mpc8260_smc_serial_initialize);
Marek Vasut7a311542012-09-13 01:38:52 +020060serial_initfunc(mpc85xx_serial_initialize);
Marek Vasutfcc20742012-09-13 01:40:33 +020061serial_initfunc(iop480_serial_initialize);
Marek Vasutaf7be3b2012-09-13 12:25:07 +020062serial_initfunc(leon2_serial_initialize);
Marek Vasut29b5ff72012-09-13 12:25:48 +020063serial_initfunc(leon3_serial_initialize);
Marek Vasutafe4c382012-09-13 12:26:39 +020064serial_initfunc(marvell_serial_initialize);
Marek Vasut5dee6f52012-09-13 12:27:37 +020065serial_initfunc(amirix_serial_initialize);
Marek Vasutc45a14a2012-09-13 12:28:07 +020066serial_initfunc(bmw_serial_initialize);
Marek Vasutd25c39d2012-09-13 12:29:31 +020067serial_initfunc(cogent_serial_initialize);
Marek Vasut619c90b2012-09-13 12:32:56 +020068serial_initfunc(cpci750_serial_initialize);
Marek Vasut829b3b22012-09-13 12:33:50 +020069serial_initfunc(evb64260_serial_initialize);
Marek Vasutd126f282012-09-13 12:34:24 +020070serial_initfunc(ml2_serial_initialize);
Marek Vasut26d8eaa2012-09-13 12:34:49 +020071serial_initfunc(sconsole_serial_initialize);
Marek Vasut088a4f32012-09-13 12:35:54 +020072serial_initfunc(p3mx_serial_initialize);
Marek Vasut8c085752012-09-13 16:48:50 +020073serial_initfunc(altera_jtag_serial_initialize);
Marek Vasutb207d642012-09-13 16:49:51 +020074serial_initfunc(altera_serial_initialize);
Marek Vasutcfba4572012-09-13 16:50:30 +020075serial_initfunc(atmel_serial_initialize);
Marek Vasute503f902012-09-13 16:51:02 +020076serial_initfunc(lpc32xx_serial_initialize);
Marek Vasutabaef692012-09-13 16:51:38 +020077serial_initfunc(mcf_serial_initialize);
Marek Vasut28ea4c32012-09-13 16:52:07 +020078serial_initfunc(ns9750_serial_initialize);
Marek Vasut69ea8072012-09-13 16:52:38 +020079serial_initfunc(oc_serial_initialize);
Marek Vasut4bee0b32012-09-13 16:53:15 +020080serial_initfunc(s3c4510b_serial_initialize);
Marek Vasutcc61c312012-09-13 16:53:49 +020081serial_initfunc(s3c64xx_serial_initialize);
Marek Vasutcef46b72012-09-14 22:33:21 +020082serial_initfunc(sandbox_serial_initialize);
Marek Vasut8b029db2012-09-14 22:34:22 +020083serial_initfunc(clps7111_serial_initialize);
Marek Vasut7882e7c2012-09-14 22:34:51 +020084serial_initfunc(imx_serial_initialize);
Marek Vasutb6cd0fe2012-09-14 22:35:14 +020085serial_initfunc(ixp_serial_initialize);
Marek Vasutf0eb1f62012-09-12 13:50:56 +020086
Mike Frysingerc52b4f72011-04-29 18:03:30 +000087void serial_register(struct serial_device *dev)
wdenk281e00a2004-08-01 22:48:16 +000088{
Wolfgang Denk2e5167c2010-10-28 20:00:11 +020089#ifdef CONFIG_NEEDS_MANUAL_RELOC
Marek Vasut89143fb2012-09-07 14:35:31 +020090 dev->start += gd->reloc_off;
wdenk281e00a2004-08-01 22:48:16 +000091 dev->setbrg += gd->reloc_off;
92 dev->getc += gd->reloc_off;
93 dev->tstc += gd->reloc_off;
94 dev->putc += gd->reloc_off;
95 dev->puts += gd->reloc_off;
Peter Tyser521af042009-09-21 11:20:36 -050096#endif
wdenk281e00a2004-08-01 22:48:16 +000097
98 dev->next = serial_devices;
99 serial_devices = dev;
wdenk281e00a2004-08-01 22:48:16 +0000100}
101
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000102void serial_initialize(void)
wdenk281e00a2004-08-01 22:48:16 +0000103{
Marek Vasutf0eb1f62012-09-12 13:50:56 +0200104 mpc8xx_serial_initialize();
Marek Vasutabc0ed82012-09-12 20:02:05 +0200105 ns16550_serial_initialize();
Marek Vasut1fe5c112012-09-12 13:57:58 +0200106 pxa_serial_initialize();
Marek Vasut28af6382012-09-12 16:01:16 +0200107 s3c24xx_serial_initialize();
Marek Vasutb4980512012-09-12 19:39:57 +0200108 s5p_serial_initialize();
Marek Vasut918327c2012-09-12 19:50:18 +0200109 mpc512x_serial_initialize();
Marek Vasut5ae1de02012-09-12 20:07:54 +0200110 bfin_serial_initialize();
Marek Vasut41651ca2012-09-13 00:02:54 +0200111 bfin_jtag_initialize();
Marek Vasut87d69222012-09-12 19:45:58 +0200112 uartlite_serial_initialize();
Tom Rini51d81022012-10-08 14:46:23 -0700113 zynq_serial_initalize();
Marek Vasut7b953c52012-09-13 01:16:50 +0200114 au1x00_serial_initialize();
Marek Vasut01911422012-09-13 01:20:07 +0200115 asc_serial_initialize();
Marek Vasut6cb32732012-09-13 01:20:59 +0200116 jz_serial_initialize();
Marek Vasutb57c6522012-09-13 01:26:42 +0200117 mpc5xx_serial_initialize();
Marek Vasut2063a542012-09-13 01:29:31 +0200118 mpc8220_serial_initialize();
Marek Vasutd68f4da2012-09-13 01:34:16 +0200119 mpc8260_scc_serial_initialize();
120 mpc8260_smc_serial_initialize();
Marek Vasut7a311542012-09-13 01:38:52 +0200121 mpc85xx_serial_initialize();
Marek Vasutfcc20742012-09-13 01:40:33 +0200122 iop480_serial_initialize();
Marek Vasutaf7be3b2012-09-13 12:25:07 +0200123 leon2_serial_initialize();
Marek Vasut29b5ff72012-09-13 12:25:48 +0200124 leon3_serial_initialize();
Marek Vasutafe4c382012-09-13 12:26:39 +0200125 marvell_serial_initialize();
Marek Vasut5dee6f52012-09-13 12:27:37 +0200126 amirix_serial_initialize();
Marek Vasutc45a14a2012-09-13 12:28:07 +0200127 bmw_serial_initialize();
Marek Vasutd25c39d2012-09-13 12:29:31 +0200128 cogent_serial_initialize();
Marek Vasut619c90b2012-09-13 12:32:56 +0200129 cpci750_serial_initialize();
Marek Vasut829b3b22012-09-13 12:33:50 +0200130 evb64260_serial_initialize();
Marek Vasutd126f282012-09-13 12:34:24 +0200131 ml2_serial_initialize();
Marek Vasut26d8eaa2012-09-13 12:34:49 +0200132 sconsole_serial_initialize();
Marek Vasut088a4f32012-09-13 12:35:54 +0200133 p3mx_serial_initialize();
Marek Vasut8c085752012-09-13 16:48:50 +0200134 altera_jtag_serial_initialize();
Marek Vasutb207d642012-09-13 16:49:51 +0200135 altera_serial_initialize();
Marek Vasutcfba4572012-09-13 16:50:30 +0200136 atmel_serial_initialize();
Marek Vasute503f902012-09-13 16:51:02 +0200137 lpc32xx_serial_initialize();
Marek Vasutabaef692012-09-13 16:51:38 +0200138 mcf_serial_initialize();
Marek Vasut28ea4c32012-09-13 16:52:07 +0200139 ns9750_serial_initialize();
Marek Vasut69ea8072012-09-13 16:52:38 +0200140 oc_serial_initialize();
Marek Vasut4bee0b32012-09-13 16:53:15 +0200141 s3c4510b_serial_initialize();
Marek Vasutcc61c312012-09-13 16:53:49 +0200142 s3c64xx_serial_initialize();
Marek Vasutcef46b72012-09-14 22:33:21 +0200143 sandbox_serial_initialize();
Marek Vasut8b029db2012-09-14 22:34:22 +0200144 clps7111_serial_initialize();
Marek Vasut7882e7c2012-09-14 22:34:51 +0200145 imx_serial_initialize();
Marek Vasutb6cd0fe2012-09-14 22:35:14 +0200146 ixp_serial_initialize();
Marek Vasut7b953c52012-09-13 01:16:50 +0200147
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000148 serial_assign(default_serial_console()->name);
wdenk281e00a2004-08-01 22:48:16 +0000149}
150
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000151void serial_stdio_init(void)
wdenk281e00a2004-08-01 22:48:16 +0000152{
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +0200153 struct stdio_dev dev;
wdenk281e00a2004-08-01 22:48:16 +0000154 struct serial_device *s = serial_devices;
155
wdenk2ee66532004-10-11 22:43:02 +0000156 while (s) {
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000157 memset(&dev, 0, sizeof(dev));
wdenk281e00a2004-08-01 22:48:16 +0000158
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000159 strcpy(dev.name, s->name);
wdenk281e00a2004-08-01 22:48:16 +0000160 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
161
Marek Vasut89143fb2012-09-07 14:35:31 +0200162 dev.start = s->start;
163 dev.stop = s->stop;
wdenk281e00a2004-08-01 22:48:16 +0000164 dev.putc = s->putc;
165 dev.puts = s->puts;
166 dev.getc = s->getc;
167 dev.tstc = s->tstc;
168
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000169 stdio_register(&dev);
wdenk281e00a2004-08-01 22:48:16 +0000170
171 s = s->next;
172 }
173}
174
Gerlando Falauto7813ca92011-11-18 06:49:12 +0000175int serial_assign(const char *name)
wdenk281e00a2004-08-01 22:48:16 +0000176{
177 struct serial_device *s;
178
wdenk2ee66532004-10-11 22:43:02 +0000179 for (s = serial_devices; s; s = s->next) {
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000180 if (strcmp(s->name, name) == 0) {
wdenk281e00a2004-08-01 22:48:16 +0000181 serial_current = s;
182 return 0;
183 }
184 }
185
186 return 1;
187}
188
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000189void serial_reinit_all(void)
wdenk281e00a2004-08-01 22:48:16 +0000190{
191 struct serial_device *s;
192
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000193 for (s = serial_devices; s; s = s->next)
Marek Vasut89143fb2012-09-07 14:35:31 +0200194 s->start();
wdenk281e00a2004-08-01 22:48:16 +0000195}
196
Simon Glass857c2832011-08-19 11:09:43 +0000197static struct serial_device *get_current(void)
wdenk281e00a2004-08-01 22:48:16 +0000198{
Simon Glass857c2832011-08-19 11:09:43 +0000199 struct serial_device *dev;
200
wdenk2ee66532004-10-11 22:43:02 +0000201 if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
Simon Glass857c2832011-08-19 11:09:43 +0000202 dev = default_serial_console();
wdenk2ee66532004-10-11 22:43:02 +0000203
Simon Glass857c2832011-08-19 11:09:43 +0000204 /* We must have a console device */
205 if (!dev)
206 panic("Cannot find console");
207 } else
208 dev = serial_current;
209 return dev;
210}
wdenk281e00a2004-08-01 22:48:16 +0000211
Simon Glass857c2832011-08-19 11:09:43 +0000212int serial_init(void)
213{
Marek Vasut89143fb2012-09-07 14:35:31 +0200214 return get_current()->start();
wdenk281e00a2004-08-01 22:48:16 +0000215}
216
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000217void serial_setbrg(void)
wdenk281e00a2004-08-01 22:48:16 +0000218{
Simon Glass857c2832011-08-19 11:09:43 +0000219 get_current()->setbrg();
wdenk281e00a2004-08-01 22:48:16 +0000220}
221
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000222int serial_getc(void)
wdenk281e00a2004-08-01 22:48:16 +0000223{
Simon Glass857c2832011-08-19 11:09:43 +0000224 return get_current()->getc();
wdenk281e00a2004-08-01 22:48:16 +0000225}
226
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000227int serial_tstc(void)
wdenk281e00a2004-08-01 22:48:16 +0000228{
Simon Glass857c2832011-08-19 11:09:43 +0000229 return get_current()->tstc();
wdenk281e00a2004-08-01 22:48:16 +0000230}
231
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000232void serial_putc(const char c)
wdenk281e00a2004-08-01 22:48:16 +0000233{
Simon Glass857c2832011-08-19 11:09:43 +0000234 get_current()->putc(c);
wdenk281e00a2004-08-01 22:48:16 +0000235}
236
Gerlando Falautoa6e6f7f2011-11-18 06:49:11 +0000237void serial_puts(const char *s)
wdenk281e00a2004-08-01 22:48:16 +0000238{
Simon Glass857c2832011-08-19 11:09:43 +0000239 get_current()->puts(s);
wdenk281e00a2004-08-01 22:48:16 +0000240}
Mike Frysinger7b826c22011-05-14 06:56:15 +0000241
242#if CONFIG_POST & CONFIG_SYS_POST_UART
243static const int bauds[] = CONFIG_SYS_BAUDRATE_TABLE;
244
245/* Mark weak until post/cpu/.../uart.c migrate over */
246__weak
247int uart_post_test(int flags)
248{
249 unsigned char c;
250 int ret, saved_baud, b;
251 struct serial_device *saved_dev, *s;
252 bd_t *bd = gd->bd;
253
254 /* Save current serial state */
255 ret = 0;
256 saved_dev = serial_current;
257 saved_baud = bd->bi_baudrate;
258
259 for (s = serial_devices; s; s = s->next) {
260 /* If this driver doesn't support loop back, skip it */
261 if (!s->loop)
262 continue;
263
264 /* Test the next device */
265 serial_current = s;
266
267 ret = serial_init();
268 if (ret)
269 goto done;
270
271 /* Consume anything that happens to be queued */
272 while (serial_tstc())
273 serial_getc();
274
275 /* Enable loop back */
276 s->loop(1);
277
278 /* Test every available baud rate */
279 for (b = 0; b < ARRAY_SIZE(bauds); ++b) {
280 bd->bi_baudrate = bauds[b];
281 serial_setbrg();
282
283 /*
284 * Stick to printable chars to avoid issues:
285 * - terminal corruption
286 * - serial program reacting to sequences and sending
287 * back random extra data
288 * - most serial drivers add in extra chars (like \r\n)
289 */
290 for (c = 0x20; c < 0x7f; ++c) {
291 /* Send it out */
292 serial_putc(c);
293
294 /* Make sure it's the same one */
295 ret = (c != serial_getc());
296 if (ret) {
297 s->loop(0);
298 goto done;
299 }
300
301 /* Clean up the output in case it was sent */
302 serial_putc('\b');
303 ret = ('\b' != serial_getc());
304 if (ret) {
305 s->loop(0);
306 goto done;
307 }
308 }
309 }
310
311 /* Disable loop back */
312 s->loop(0);
313
Marek Vasut89143fb2012-09-07 14:35:31 +0200314 /* XXX: There is no serial_stop() !? */
315 if (s->stop)
316 s->stop();
Mike Frysinger7b826c22011-05-14 06:56:15 +0000317 }
318
319 done:
320 /* Restore previous serial state */
321 serial_current = saved_dev;
322 bd->bi_baudrate = saved_baud;
323 serial_reinit_all();
324 serial_setbrg();
325
326 return ret;
327}
328#endif