3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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 #include <stdio_dev.h>
28 #include <linux/compiler.h>
30 DECLARE_GLOBAL_DATA_PTR;
32 static struct serial_device *serial_devices = NULL;
33 static struct serial_device *serial_current = NULL;
35 void serial_register(struct serial_device *dev)
37 #ifdef CONFIG_NEEDS_MANUAL_RELOC
38 dev->init += gd->reloc_off;
39 dev->setbrg += gd->reloc_off;
40 dev->getc += gd->reloc_off;
41 dev->tstc += gd->reloc_off;
42 dev->putc += gd->reloc_off;
43 dev->puts += gd->reloc_off;
46 dev->next = serial_devices;
50 void serial_initialize (void)
52 #if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
53 serial_register (&serial_smc_device);
55 #if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
56 || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
57 serial_register (&serial_scc_device);
60 #if defined(CONFIG_SYS_NS16550_SERIAL)
61 #if defined(CONFIG_SYS_NS16550_COM1)
62 serial_register(&eserial1_device);
64 #if defined(CONFIG_SYS_NS16550_COM2)
65 serial_register(&eserial2_device);
67 #if defined(CONFIG_SYS_NS16550_COM3)
68 serial_register(&eserial3_device);
70 #if defined(CONFIG_SYS_NS16550_COM4)
71 serial_register(&eserial4_device);
73 #endif /* CONFIG_SYS_NS16550_SERIAL */
74 #if defined (CONFIG_FFUART)
75 serial_register(&serial_ffuart_device);
77 #if defined (CONFIG_BTUART)
78 serial_register(&serial_btuart_device);
80 #if defined (CONFIG_STUART)
81 serial_register(&serial_stuart_device);
83 #if defined(CONFIG_S3C2410)
84 serial_register(&s3c24xx_serial0_device);
85 serial_register(&s3c24xx_serial1_device);
86 serial_register(&s3c24xx_serial2_device);
88 #if defined(CONFIG_S5P)
89 serial_register(&s5p_serial0_device);
90 serial_register(&s5p_serial1_device);
91 serial_register(&s5p_serial2_device);
92 serial_register(&s5p_serial3_device);
94 #if defined(CONFIG_MPC512X)
95 #if defined(CONFIG_SYS_PSC1)
96 serial_register(&serial1_device);
98 #if defined(CONFIG_SYS_PSC3)
99 serial_register(&serial3_device);
101 #if defined(CONFIG_SYS_PSC4)
102 serial_register(&serial4_device);
104 #if defined(CONFIG_SYS_PSC6)
105 serial_register(&serial6_device);
108 #if defined(CONFIG_SYS_BFIN_UART)
109 serial_register_bfin_uart();
111 serial_assign (default_serial_console ()->name);
114 void serial_stdio_init (void)
116 struct stdio_dev dev;
117 struct serial_device *s = serial_devices;
120 memset (&dev, 0, sizeof (dev));
122 strcpy (dev.name, s->name);
123 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
126 dev.stop = s->uninit;
132 stdio_register (&dev);
138 int serial_assign (char *name)
140 struct serial_device *s;
142 for (s = serial_devices; s; s = s->next) {
143 if (strcmp (s->name, name) == 0) {
152 void serial_reinit_all (void)
154 struct serial_device *s;
156 for (s = serial_devices; s; s = s->next) {
161 static struct serial_device *get_current(void)
163 struct serial_device *dev;
165 if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
166 dev = default_serial_console();
168 /* We must have a console device */
170 panic("Cannot find console");
172 dev = serial_current;
176 int serial_init(void)
178 return get_current()->init();
181 void serial_setbrg (void)
183 get_current()->setbrg();
186 int serial_getc (void)
188 return get_current()->getc();
191 int serial_tstc (void)
193 return get_current()->tstc();
196 void serial_putc (const char c)
198 get_current()->putc(c);
201 void serial_puts (const char *s)
203 get_current()->puts(s);
206 #if CONFIG_POST & CONFIG_SYS_POST_UART
207 static const int bauds[] = CONFIG_SYS_BAUDRATE_TABLE;
209 /* Mark weak until post/cpu/.../uart.c migrate over */
211 int uart_post_test(int flags)
214 int ret, saved_baud, b;
215 struct serial_device *saved_dev, *s;
218 /* Save current serial state */
220 saved_dev = serial_current;
221 saved_baud = bd->bi_baudrate;
223 for (s = serial_devices; s; s = s->next) {
224 /* If this driver doesn't support loop back, skip it */
228 /* Test the next device */
235 /* Consume anything that happens to be queued */
236 while (serial_tstc())
239 /* Enable loop back */
242 /* Test every available baud rate */
243 for (b = 0; b < ARRAY_SIZE(bauds); ++b) {
244 bd->bi_baudrate = bauds[b];
248 * Stick to printable chars to avoid issues:
249 * - terminal corruption
250 * - serial program reacting to sequences and sending
251 * back random extra data
252 * - most serial drivers add in extra chars (like \r\n)
254 for (c = 0x20; c < 0x7f; ++c) {
258 /* Make sure it's the same one */
259 ret = (c != serial_getc());
265 /* Clean up the output in case it was sent */
267 ret = ('\b' != serial_getc());
275 /* Disable loop back */
278 /* XXX: There is no serial_uninit() !? */
284 /* Restore previous serial state */
285 serial_current = saved_dev;
286 bd->bi_baudrate = saved_baud;