blob: 3ab323bcb884070cf21b9d24272cf06bee03e36c [file] [log] [blame]
wdenk7ac16102004-08-01 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-VILLARD2a7a0312009-05-16 12:14:54 +020026#include <stdio_dev.h>
Mike Frysinger078f2f12011-05-14 06:56:15 +000027#include <post.h>
28#include <linux/compiler.h>
Marek Vasut0e1b5772012-10-06 14:07:03 +000029#include <errno.h>
wdenk7ac16102004-08-01 22:48:16 +000030
Wolfgang Denk6405a152006-03-31 18:32:53 +020031DECLARE_GLOBAL_DATA_PTR;
32
Gerlando Falauto34148d62011-11-18 06:49:11 +000033static struct serial_device *serial_devices;
34static struct serial_device *serial_current;
wdenk7ac16102004-08-01 22:48:16 +000035
Marek Vasutf6af0482012-09-12 17:49:58 +020036static void serial_null(void)
37{
38}
39
40#define serial_initfunc(name) \
41 void name(void) \
42 __attribute__((weak, alias("serial_null")));
43
Marek Vasut419d8942012-09-12 13:50:56 +020044serial_initfunc(mpc8xx_serial_initialize);
Marek Vasut3f085062012-09-12 20:02:05 +020045serial_initfunc(ns16550_serial_initialize);
Marek Vasutf3442012012-09-12 13:57:58 +020046serial_initfunc(pxa_serial_initialize);
Marek Vasutb3e48aa2012-09-12 16:01:16 +020047serial_initfunc(s3c24xx_serial_initialize);
Marek Vasut533e31e2012-09-12 19:39:57 +020048serial_initfunc(s5p_serial_initialize);
Tom Rini354531e2012-10-08 14:46:23 -070049serial_initfunc(zynq_serial_initalize);
Marek Vasut840b7242012-09-12 20:07:54 +020050serial_initfunc(bfin_serial_initialize);
Marek Vasut3862c4a2012-09-13 00:02:54 +020051serial_initfunc(bfin_jtag_initialize);
Marek Vasutf9bf9662012-09-12 19:50:18 +020052serial_initfunc(mpc512x_serial_initialize);
Marek Vasutd97fb5c2012-09-12 19:45:58 +020053serial_initfunc(uartlite_serial_initialize);
Marek Vasut01f9ea82012-09-13 01:16:50 +020054serial_initfunc(au1x00_serial_initialize);
Marek Vasut2a9d9352012-09-13 01:20:07 +020055serial_initfunc(asc_serial_initialize);
Marek Vasut76cb60d2012-09-13 01:20:59 +020056serial_initfunc(jz_serial_initialize);
Marek Vasut58698e72012-09-13 01:26:42 +020057serial_initfunc(mpc5xx_serial_initialize);
Marek Vasut80ee3db2012-09-13 01:29:31 +020058serial_initfunc(mpc8220_serial_initialize);
Marek Vasut18a47792012-09-13 01:34:16 +020059serial_initfunc(mpc8260_scc_serial_initialize);
60serial_initfunc(mpc8260_smc_serial_initialize);
Marek Vasutc5485452012-09-13 01:38:52 +020061serial_initfunc(mpc85xx_serial_initialize);
Marek Vasuta29555c2012-09-13 01:40:33 +020062serial_initfunc(iop480_serial_initialize);
Marek Vasut8330d1e2012-09-13 12:25:07 +020063serial_initfunc(leon2_serial_initialize);
Marek Vasut2c91a962012-09-13 12:25:48 +020064serial_initfunc(leon3_serial_initialize);
Marek Vasut4c2ced32012-09-13 12:26:39 +020065serial_initfunc(marvell_serial_initialize);
Marek Vasut42cde132012-09-13 12:27:37 +020066serial_initfunc(amirix_serial_initialize);
Marek Vasutbf5314b2012-09-13 12:28:07 +020067serial_initfunc(bmw_serial_initialize);
Marek Vasutf7284022012-09-13 12:29:31 +020068serial_initfunc(cogent_serial_initialize);
Marek Vasut7aa03ef2012-09-13 12:32:56 +020069serial_initfunc(cpci750_serial_initialize);
Marek Vasutadede692012-09-13 12:33:50 +020070serial_initfunc(evb64260_serial_initialize);
Marek Vasute67241b2012-09-13 12:34:24 +020071serial_initfunc(ml2_serial_initialize);
Marek Vasut4750eed2012-09-13 12:34:49 +020072serial_initfunc(sconsole_serial_initialize);
Marek Vasut4dfb1d02012-09-13 12:35:54 +020073serial_initfunc(p3mx_serial_initialize);
Marek Vasut4b026392012-09-13 16:48:50 +020074serial_initfunc(altera_jtag_serial_initialize);
Marek Vasute9d0e3c2012-09-13 16:49:51 +020075serial_initfunc(altera_serial_initialize);
Marek Vasutff093ed2012-09-13 16:50:30 +020076serial_initfunc(atmel_serial_initialize);
Marek Vasuta1207aa2012-09-13 16:51:02 +020077serial_initfunc(lpc32xx_serial_initialize);
Marek Vasut96e8ff62012-09-13 16:51:38 +020078serial_initfunc(mcf_serial_initialize);
Marek Vasutd2a9ea22012-09-13 16:52:07 +020079serial_initfunc(ns9750_serial_initialize);
Marek Vasutfcb9ef82012-09-13 16:52:38 +020080serial_initfunc(oc_serial_initialize);
Marek Vasutbec53ec2012-09-13 16:53:15 +020081serial_initfunc(s3c4510b_serial_initialize);
Marek Vasut1591f182012-09-13 16:53:49 +020082serial_initfunc(s3c64xx_serial_initialize);
Marek Vasut289c3002012-09-14 22:33:21 +020083serial_initfunc(sandbox_serial_initialize);
Marek Vasut30916a42012-09-14 22:34:22 +020084serial_initfunc(clps7111_serial_initialize);
Marek Vasut9784bde2012-09-14 22:34:51 +020085serial_initfunc(imx_serial_initialize);
Marek Vasutdde37342012-09-14 22:35:14 +020086serial_initfunc(ixp_serial_initialize);
Marek Vasut5ee46562012-09-14 22:35:43 +020087serial_initfunc(ks8695_serial_initialize);
Marek Vasut58177b72012-09-14 22:36:27 +020088serial_initfunc(lh7a40x_serial_initialize);
Marek Vasute33298e2012-09-14 22:36:50 +020089serial_initfunc(lpc2292_serial_initialize);
Marek Vasut00797862012-09-14 22:37:17 +020090serial_initfunc(max3100_serial_initialize);
Marek Vasut64c60552012-09-14 22:37:43 +020091serial_initfunc(mxc_serial_initialize);
Marek Vasut9a5f8582012-09-14 22:38:09 +020092serial_initfunc(netarm_serial_initialize);
Marek Vasut46e4d5f2012-09-14 22:38:46 +020093serial_initfunc(pl01x_serial_initialize);
Marek Vasut9776a442012-09-14 22:39:19 +020094serial_initfunc(s3c44b0_serial_initialize);
Marek Vasut0d19c022012-09-14 22:39:44 +020095serial_initfunc(sa1100_serial_initialize);
Marek Vasut904d3d72012-09-14 22:40:08 +020096serial_initfunc(sh_serial_initialize);
Marek Vasut419d8942012-09-12 13:50:56 +020097
Mike Frysingerffadc822011-04-29 18:03:30 +000098void serial_register(struct serial_device *dev)
wdenk7ac16102004-08-01 22:48:16 +000099{
Wolfgang Denkd0813e52010-10-28 20:00:11 +0200100#ifdef CONFIG_NEEDS_MANUAL_RELOC
Marek Vasut2206b342012-09-16 18:54:22 +0200101 if (dev->start)
102 dev->start += gd->reloc_off;
103 if (dev->stop)
104 dev->stop += gd->reloc_off;
105 if (dev->setbrg)
106 dev->setbrg += gd->reloc_off;
107 if (dev->getc)
108 dev->getc += gd->reloc_off;
109 if (dev->tstc)
110 dev->tstc += gd->reloc_off;
111 if (dev->putc)
112 dev->putc += gd->reloc_off;
113 if (dev->puts)
114 dev->puts += gd->reloc_off;
Peter Tyser9057cbf2009-09-21 11:20:36 -0500115#endif
wdenk7ac16102004-08-01 22:48:16 +0000116
117 dev->next = serial_devices;
118 serial_devices = dev;
wdenk7ac16102004-08-01 22:48:16 +0000119}
120
Gerlando Falauto34148d62011-11-18 06:49:11 +0000121void serial_initialize(void)
wdenk7ac16102004-08-01 22:48:16 +0000122{
Marek Vasut419d8942012-09-12 13:50:56 +0200123 mpc8xx_serial_initialize();
Marek Vasut3f085062012-09-12 20:02:05 +0200124 ns16550_serial_initialize();
Marek Vasutf3442012012-09-12 13:57:58 +0200125 pxa_serial_initialize();
Marek Vasutb3e48aa2012-09-12 16:01:16 +0200126 s3c24xx_serial_initialize();
Marek Vasut533e31e2012-09-12 19:39:57 +0200127 s5p_serial_initialize();
Marek Vasutf9bf9662012-09-12 19:50:18 +0200128 mpc512x_serial_initialize();
Marek Vasut840b7242012-09-12 20:07:54 +0200129 bfin_serial_initialize();
Marek Vasut3862c4a2012-09-13 00:02:54 +0200130 bfin_jtag_initialize();
Marek Vasutd97fb5c2012-09-12 19:45:58 +0200131 uartlite_serial_initialize();
Tom Rini354531e2012-10-08 14:46:23 -0700132 zynq_serial_initalize();
Marek Vasut01f9ea82012-09-13 01:16:50 +0200133 au1x00_serial_initialize();
Marek Vasut2a9d9352012-09-13 01:20:07 +0200134 asc_serial_initialize();
Marek Vasut76cb60d2012-09-13 01:20:59 +0200135 jz_serial_initialize();
Marek Vasut58698e72012-09-13 01:26:42 +0200136 mpc5xx_serial_initialize();
Marek Vasut80ee3db2012-09-13 01:29:31 +0200137 mpc8220_serial_initialize();
Marek Vasut18a47792012-09-13 01:34:16 +0200138 mpc8260_scc_serial_initialize();
139 mpc8260_smc_serial_initialize();
Marek Vasutc5485452012-09-13 01:38:52 +0200140 mpc85xx_serial_initialize();
Marek Vasuta29555c2012-09-13 01:40:33 +0200141 iop480_serial_initialize();
Marek Vasut8330d1e2012-09-13 12:25:07 +0200142 leon2_serial_initialize();
Marek Vasut2c91a962012-09-13 12:25:48 +0200143 leon3_serial_initialize();
Marek Vasut4c2ced32012-09-13 12:26:39 +0200144 marvell_serial_initialize();
Marek Vasut42cde132012-09-13 12:27:37 +0200145 amirix_serial_initialize();
Marek Vasutbf5314b2012-09-13 12:28:07 +0200146 bmw_serial_initialize();
Marek Vasutf7284022012-09-13 12:29:31 +0200147 cogent_serial_initialize();
Marek Vasut7aa03ef2012-09-13 12:32:56 +0200148 cpci750_serial_initialize();
Marek Vasutadede692012-09-13 12:33:50 +0200149 evb64260_serial_initialize();
Marek Vasute67241b2012-09-13 12:34:24 +0200150 ml2_serial_initialize();
Marek Vasut4750eed2012-09-13 12:34:49 +0200151 sconsole_serial_initialize();
Marek Vasut4dfb1d02012-09-13 12:35:54 +0200152 p3mx_serial_initialize();
Marek Vasut4b026392012-09-13 16:48:50 +0200153 altera_jtag_serial_initialize();
Marek Vasute9d0e3c2012-09-13 16:49:51 +0200154 altera_serial_initialize();
Marek Vasutff093ed2012-09-13 16:50:30 +0200155 atmel_serial_initialize();
Marek Vasuta1207aa2012-09-13 16:51:02 +0200156 lpc32xx_serial_initialize();
Marek Vasut96e8ff62012-09-13 16:51:38 +0200157 mcf_serial_initialize();
Marek Vasutd2a9ea22012-09-13 16:52:07 +0200158 ns9750_serial_initialize();
Marek Vasutfcb9ef82012-09-13 16:52:38 +0200159 oc_serial_initialize();
Marek Vasutbec53ec2012-09-13 16:53:15 +0200160 s3c4510b_serial_initialize();
Marek Vasut1591f182012-09-13 16:53:49 +0200161 s3c64xx_serial_initialize();
Marek Vasut289c3002012-09-14 22:33:21 +0200162 sandbox_serial_initialize();
Marek Vasut30916a42012-09-14 22:34:22 +0200163 clps7111_serial_initialize();
Marek Vasut9784bde2012-09-14 22:34:51 +0200164 imx_serial_initialize();
Marek Vasutdde37342012-09-14 22:35:14 +0200165 ixp_serial_initialize();
Marek Vasut5ee46562012-09-14 22:35:43 +0200166 ks8695_serial_initialize();
Marek Vasut58177b72012-09-14 22:36:27 +0200167 lh7a40x_serial_initialize();
Marek Vasute33298e2012-09-14 22:36:50 +0200168 lpc2292_serial_initialize();
Marek Vasut00797862012-09-14 22:37:17 +0200169 max3100_serial_initialize();
Marek Vasut64c60552012-09-14 22:37:43 +0200170 mxc_serial_initialize();
Marek Vasut9a5f8582012-09-14 22:38:09 +0200171 netarm_serial_initialize();
Marek Vasut46e4d5f2012-09-14 22:38:46 +0200172 pl01x_serial_initialize();
Marek Vasut9776a442012-09-14 22:39:19 +0200173 s3c44b0_serial_initialize();
Marek Vasut0d19c022012-09-14 22:39:44 +0200174 sa1100_serial_initialize();
Marek Vasut904d3d72012-09-14 22:40:08 +0200175 sh_serial_initialize();
Marek Vasut01f9ea82012-09-13 01:16:50 +0200176
Gerlando Falauto34148d62011-11-18 06:49:11 +0000177 serial_assign(default_serial_console()->name);
wdenk7ac16102004-08-01 22:48:16 +0000178}
179
Gerlando Falauto34148d62011-11-18 06:49:11 +0000180void serial_stdio_init(void)
wdenk7ac16102004-08-01 22:48:16 +0000181{
Jean-Christophe PLAGNIOL-VILLARD2a7a0312009-05-16 12:14:54 +0200182 struct stdio_dev dev;
wdenk7ac16102004-08-01 22:48:16 +0000183 struct serial_device *s = serial_devices;
184
wdenk8f08c5b2004-10-11 22:43:02 +0000185 while (s) {
Gerlando Falauto34148d62011-11-18 06:49:11 +0000186 memset(&dev, 0, sizeof(dev));
wdenk7ac16102004-08-01 22:48:16 +0000187
Gerlando Falauto34148d62011-11-18 06:49:11 +0000188 strcpy(dev.name, s->name);
wdenk7ac16102004-08-01 22:48:16 +0000189 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
190
Marek Vasutb46931d2012-09-07 14:35:31 +0200191 dev.start = s->start;
192 dev.stop = s->stop;
wdenk7ac16102004-08-01 22:48:16 +0000193 dev.putc = s->putc;
194 dev.puts = s->puts;
195 dev.getc = s->getc;
196 dev.tstc = s->tstc;
197
Gerlando Falauto34148d62011-11-18 06:49:11 +0000198 stdio_register(&dev);
wdenk7ac16102004-08-01 22:48:16 +0000199
200 s = s->next;
201 }
202}
203
Gerlando Falauto92999582011-11-18 06:49:12 +0000204int serial_assign(const char *name)
wdenk7ac16102004-08-01 22:48:16 +0000205{
206 struct serial_device *s;
207
wdenk8f08c5b2004-10-11 22:43:02 +0000208 for (s = serial_devices; s; s = s->next) {
Marek Vasut0e1b5772012-10-06 14:07:03 +0000209 if (strcmp(s->name, name))
210 continue;
211 serial_current = s;
212 return 0;
wdenk7ac16102004-08-01 22:48:16 +0000213 }
214
Marek Vasut0e1b5772012-10-06 14:07:03 +0000215 return -EINVAL;
wdenk7ac16102004-08-01 22:48:16 +0000216}
217
Gerlando Falauto34148d62011-11-18 06:49:11 +0000218void serial_reinit_all(void)
wdenk7ac16102004-08-01 22:48:16 +0000219{
220 struct serial_device *s;
221
Gerlando Falauto34148d62011-11-18 06:49:11 +0000222 for (s = serial_devices; s; s = s->next)
Marek Vasutb46931d2012-09-07 14:35:31 +0200223 s->start();
wdenk7ac16102004-08-01 22:48:16 +0000224}
225
Simon Glass8f4e6f12011-08-19 11:09:43 +0000226static struct serial_device *get_current(void)
wdenk7ac16102004-08-01 22:48:16 +0000227{
Simon Glass8f4e6f12011-08-19 11:09:43 +0000228 struct serial_device *dev;
229
wdenk8f08c5b2004-10-11 22:43:02 +0000230 if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
Simon Glass8f4e6f12011-08-19 11:09:43 +0000231 dev = default_serial_console();
wdenk8f08c5b2004-10-11 22:43:02 +0000232
Simon Glass8f4e6f12011-08-19 11:09:43 +0000233 /* We must have a console device */
Marek Vasuta6f63342012-09-15 10:33:51 +0200234 if (!dev) {
235#ifdef CONFIG_SPL_BUILD
236 puts("Cannot find console\n");
237 hang();
238#else
239 panic("Cannot find console\n");
240#endif
241 }
Simon Glass8f4e6f12011-08-19 11:09:43 +0000242 } else
243 dev = serial_current;
244 return dev;
245}
wdenk7ac16102004-08-01 22:48:16 +0000246
Simon Glass8f4e6f12011-08-19 11:09:43 +0000247int serial_init(void)
248{
Marek Vasutb46931d2012-09-07 14:35:31 +0200249 return get_current()->start();
wdenk7ac16102004-08-01 22:48:16 +0000250}
251
Gerlando Falauto34148d62011-11-18 06:49:11 +0000252void serial_setbrg(void)
wdenk7ac16102004-08-01 22:48:16 +0000253{
Simon Glass8f4e6f12011-08-19 11:09:43 +0000254 get_current()->setbrg();
wdenk7ac16102004-08-01 22:48:16 +0000255}
256
Gerlando Falauto34148d62011-11-18 06:49:11 +0000257int serial_getc(void)
wdenk7ac16102004-08-01 22:48:16 +0000258{
Simon Glass8f4e6f12011-08-19 11:09:43 +0000259 return get_current()->getc();
wdenk7ac16102004-08-01 22:48:16 +0000260}
261
Gerlando Falauto34148d62011-11-18 06:49:11 +0000262int serial_tstc(void)
wdenk7ac16102004-08-01 22:48:16 +0000263{
Simon Glass8f4e6f12011-08-19 11:09:43 +0000264 return get_current()->tstc();
wdenk7ac16102004-08-01 22:48:16 +0000265}
266
Gerlando Falauto34148d62011-11-18 06:49:11 +0000267void serial_putc(const char c)
wdenk7ac16102004-08-01 22:48:16 +0000268{
Simon Glass8f4e6f12011-08-19 11:09:43 +0000269 get_current()->putc(c);
wdenk7ac16102004-08-01 22:48:16 +0000270}
271
Gerlando Falauto34148d62011-11-18 06:49:11 +0000272void serial_puts(const char *s)
wdenk7ac16102004-08-01 22:48:16 +0000273{
Simon Glass8f4e6f12011-08-19 11:09:43 +0000274 get_current()->puts(s);
wdenk7ac16102004-08-01 22:48:16 +0000275}
Mike Frysinger078f2f12011-05-14 06:56:15 +0000276
Marek Vasut6b9124e2012-10-06 14:07:01 +0000277void default_serial_puts(const char *s)
278{
279 struct serial_device *dev = get_current();
280 while (*s)
281 dev->putc(*s++);
282}
283
Mike Frysinger078f2f12011-05-14 06:56:15 +0000284#if CONFIG_POST & CONFIG_SYS_POST_UART
285static const int bauds[] = CONFIG_SYS_BAUDRATE_TABLE;
286
287/* Mark weak until post/cpu/.../uart.c migrate over */
288__weak
289int uart_post_test(int flags)
290{
291 unsigned char c;
292 int ret, saved_baud, b;
293 struct serial_device *saved_dev, *s;
294 bd_t *bd = gd->bd;
295
296 /* Save current serial state */
297 ret = 0;
298 saved_dev = serial_current;
299 saved_baud = bd->bi_baudrate;
300
301 for (s = serial_devices; s; s = s->next) {
302 /* If this driver doesn't support loop back, skip it */
303 if (!s->loop)
304 continue;
305
306 /* Test the next device */
307 serial_current = s;
308
309 ret = serial_init();
310 if (ret)
311 goto done;
312
313 /* Consume anything that happens to be queued */
314 while (serial_tstc())
315 serial_getc();
316
317 /* Enable loop back */
318 s->loop(1);
319
320 /* Test every available baud rate */
321 for (b = 0; b < ARRAY_SIZE(bauds); ++b) {
322 bd->bi_baudrate = bauds[b];
323 serial_setbrg();
324
325 /*
326 * Stick to printable chars to avoid issues:
327 * - terminal corruption
328 * - serial program reacting to sequences and sending
329 * back random extra data
330 * - most serial drivers add in extra chars (like \r\n)
331 */
332 for (c = 0x20; c < 0x7f; ++c) {
333 /* Send it out */
334 serial_putc(c);
335
336 /* Make sure it's the same one */
337 ret = (c != serial_getc());
338 if (ret) {
339 s->loop(0);
340 goto done;
341 }
342
343 /* Clean up the output in case it was sent */
344 serial_putc('\b');
345 ret = ('\b' != serial_getc());
346 if (ret) {
347 s->loop(0);
348 goto done;
349 }
350 }
351 }
352
353 /* Disable loop back */
354 s->loop(0);
355
Marek Vasutb46931d2012-09-07 14:35:31 +0200356 /* XXX: There is no serial_stop() !? */
357 if (s->stop)
358 s->stop();
Mike Frysinger078f2f12011-05-14 06:56:15 +0000359 }
360
361 done:
362 /* Restore previous serial state */
363 serial_current = saved_dev;
364 bd->bi_baudrate = saved_baud;
365 serial_reinit_all();
366 serial_setbrg();
367
368 return ret;
369}
370#endif