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281e00a3 WD |
1 | /* |
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> | |
52cb4d4f | 26 | #include <stdio_dev.h> |
7b826c2f MF |
27 | #include <post.h> |
28 | #include <linux/compiler.h> | |
281e00a3 | 29 | |
d87080b7 WD |
30 | DECLARE_GLOBAL_DATA_PTR; |
31 | ||
a6e6f7f4 GF |
32 | static struct serial_device *serial_devices; |
33 | static struct serial_device *serial_current; | |
281e00a3 | 34 | |
2a333aeb MV |
35 | static void serial_null(void) |
36 | { | |
37 | } | |
38 | ||
39 | #define serial_initfunc(name) \ | |
40 | void name(void) \ | |
41 | __attribute__((weak, alias("serial_null"))); | |
42 | ||
f0eb1f61 | 43 | serial_initfunc(mpc8xx_serial_initialize); |
abc0ed8d | 44 | serial_initfunc(ns16550_serial_initialize); |
1fe5c110 | 45 | serial_initfunc(pxa_serial_initialize); |
28af6385 | 46 | serial_initfunc(s3c24xx_serial_initialize); |
b4980515 | 47 | serial_initfunc(s5p_serial_initialize); |
51d8102f | 48 | serial_initfunc(zynq_serial_initalize); |
5ae1de0d | 49 | serial_initfunc(bfin_serial_initialize); |
41651cab | 50 | serial_initfunc(bfin_jtag_initialize); |
918327c8 | 51 | serial_initfunc(mpc512x_serial_initialize); |
87d69229 | 52 | serial_initfunc(uartlite_serial_initialize); |
7b953c51 | 53 | serial_initfunc(au1x00_serial_initialize); |
01911422 | 54 | serial_initfunc(asc_serial_initialize); |
6cb3273d | 55 | serial_initfunc(jz_serial_initialize); |
b57c6528 | 56 | serial_initfunc(mpc5xx_serial_initialize); |
2063a54e | 57 | serial_initfunc(mpc8220_serial_initialize); |
d68f4da2 MV |
58 | serial_initfunc(mpc8260_scc_serial_initialize); |
59 | serial_initfunc(mpc8260_smc_serial_initialize); | |
7a311546 | 60 | serial_initfunc(mpc85xx_serial_initialize); |
fcc2074d | 61 | serial_initfunc(iop480_serial_initialize); |
af7be3b6 | 62 | serial_initfunc(leon2_serial_initialize); |
29b5ff7f | 63 | serial_initfunc(leon3_serial_initialize); |
afe4c389 | 64 | serial_initfunc(marvell_serial_initialize); |
5dee6f55 | 65 | serial_initfunc(amirix_serial_initialize); |
c45a14ad | 66 | serial_initfunc(bmw_serial_initialize); |
f0eb1f61 | 67 | |
c52b4f79 | 68 | void serial_register(struct serial_device *dev) |
281e00a3 | 69 | { |
2e5167cc | 70 | #ifdef CONFIG_NEEDS_MANUAL_RELOC |
89143fb3 | 71 | dev->start += gd->reloc_off; |
281e00a3 WD |
72 | dev->setbrg += gd->reloc_off; |
73 | dev->getc += gd->reloc_off; | |
74 | dev->tstc += gd->reloc_off; | |
75 | dev->putc += gd->reloc_off; | |
76 | dev->puts += gd->reloc_off; | |
521af04d | 77 | #endif |
281e00a3 WD |
78 | |
79 | dev->next = serial_devices; | |
80 | serial_devices = dev; | |
281e00a3 WD |
81 | } |
82 | ||
a6e6f7f4 | 83 | void serial_initialize(void) |
281e00a3 | 84 | { |
f0eb1f61 | 85 | mpc8xx_serial_initialize(); |
abc0ed8d | 86 | ns16550_serial_initialize(); |
1fe5c110 | 87 | pxa_serial_initialize(); |
28af6385 | 88 | s3c24xx_serial_initialize(); |
b4980515 | 89 | s5p_serial_initialize(); |
918327c8 | 90 | mpc512x_serial_initialize(); |
5ae1de0d | 91 | bfin_serial_initialize(); |
41651cab | 92 | bfin_jtag_initialize(); |
87d69229 | 93 | uartlite_serial_initialize(); |
51d8102f | 94 | zynq_serial_initalize(); |
7b953c51 | 95 | au1x00_serial_initialize(); |
01911422 | 96 | asc_serial_initialize(); |
6cb3273d | 97 | jz_serial_initialize(); |
b57c6528 | 98 | mpc5xx_serial_initialize(); |
2063a54e | 99 | mpc8220_serial_initialize(); |
d68f4da2 MV |
100 | mpc8260_scc_serial_initialize(); |
101 | mpc8260_smc_serial_initialize(); | |
7a311546 | 102 | mpc85xx_serial_initialize(); |
fcc2074d | 103 | iop480_serial_initialize(); |
af7be3b6 | 104 | leon2_serial_initialize(); |
29b5ff7f | 105 | leon3_serial_initialize(); |
afe4c389 | 106 | marvell_serial_initialize(); |
5dee6f55 | 107 | amirix_serial_initialize(); |
c45a14ad | 108 | bmw_serial_initialize(); |
7b953c51 | 109 | |
a6e6f7f4 | 110 | serial_assign(default_serial_console()->name); |
281e00a3 WD |
111 | } |
112 | ||
a6e6f7f4 | 113 | void serial_stdio_init(void) |
281e00a3 | 114 | { |
52cb4d4f | 115 | struct stdio_dev dev; |
281e00a3 WD |
116 | struct serial_device *s = serial_devices; |
117 | ||
2ee66533 | 118 | while (s) { |
a6e6f7f4 | 119 | memset(&dev, 0, sizeof(dev)); |
281e00a3 | 120 | |
a6e6f7f4 | 121 | strcpy(dev.name, s->name); |
281e00a3 WD |
122 | dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT; |
123 | ||
89143fb3 MV |
124 | dev.start = s->start; |
125 | dev.stop = s->stop; | |
281e00a3 WD |
126 | dev.putc = s->putc; |
127 | dev.puts = s->puts; | |
128 | dev.getc = s->getc; | |
129 | dev.tstc = s->tstc; | |
130 | ||
a6e6f7f4 | 131 | stdio_register(&dev); |
281e00a3 WD |
132 | |
133 | s = s->next; | |
134 | } | |
135 | } | |
136 | ||
7813ca9b | 137 | int serial_assign(const char *name) |
281e00a3 WD |
138 | { |
139 | struct serial_device *s; | |
140 | ||
2ee66533 | 141 | for (s = serial_devices; s; s = s->next) { |
a6e6f7f4 | 142 | if (strcmp(s->name, name) == 0) { |
281e00a3 WD |
143 | serial_current = s; |
144 | return 0; | |
145 | } | |
146 | } | |
147 | ||
148 | return 1; | |
149 | } | |
150 | ||
a6e6f7f4 | 151 | void serial_reinit_all(void) |
281e00a3 WD |
152 | { |
153 | struct serial_device *s; | |
154 | ||
a6e6f7f4 | 155 | for (s = serial_devices; s; s = s->next) |
89143fb3 | 156 | s->start(); |
281e00a3 WD |
157 | } |
158 | ||
857c283e | 159 | static struct serial_device *get_current(void) |
281e00a3 | 160 | { |
857c283e | 161 | struct serial_device *dev; |
2ee66533 | 162 | |
857c283e SG |
163 | if (!(gd->flags & GD_FLG_RELOC) || !serial_current) { |
164 | dev = default_serial_console(); | |
165 | ||
166 | /* We must have a console device */ | |
167 | if (!dev) | |
168 | panic("Cannot find console"); | |
169 | } else | |
170 | dev = serial_current; | |
171 | return dev; | |
172 | } | |
281e00a3 | 173 | |
857c283e SG |
174 | int serial_init(void) |
175 | { | |
89143fb3 | 176 | return get_current()->start(); |
281e00a3 WD |
177 | } |
178 | ||
a6e6f7f4 | 179 | void serial_setbrg(void) |
281e00a3 | 180 | { |
857c283e | 181 | get_current()->setbrg(); |
281e00a3 WD |
182 | } |
183 | ||
a6e6f7f4 | 184 | int serial_getc(void) |
281e00a3 | 185 | { |
857c283e | 186 | return get_current()->getc(); |
281e00a3 WD |
187 | } |
188 | ||
a6e6f7f4 | 189 | int serial_tstc(void) |
281e00a3 | 190 | { |
857c283e | 191 | return get_current()->tstc(); |
281e00a3 WD |
192 | } |
193 | ||
a6e6f7f4 | 194 | void serial_putc(const char c) |
281e00a3 | 195 | { |
857c283e | 196 | get_current()->putc(c); |
281e00a3 WD |
197 | } |
198 | ||
a6e6f7f4 | 199 | void serial_puts(const char *s) |
281e00a3 | 200 | { |
857c283e | 201 | get_current()->puts(s); |
281e00a3 | 202 | } |
7b826c2f MF |
203 | |
204 | #if CONFIG_POST & CONFIG_SYS_POST_UART | |
205 | static const int bauds[] = CONFIG_SYS_BAUDRATE_TABLE; | |
206 | ||
207 | /* Mark weak until post/cpu/.../uart.c migrate over */ | |
208 | __weak | |
209 | int uart_post_test(int flags) | |
210 | { | |
211 | unsigned char c; | |
212 | int ret, saved_baud, b; | |
213 | struct serial_device *saved_dev, *s; | |
214 | bd_t *bd = gd->bd; | |
215 | ||
216 | /* Save current serial state */ | |
217 | ret = 0; | |
218 | saved_dev = serial_current; | |
219 | saved_baud = bd->bi_baudrate; | |
220 | ||
221 | for (s = serial_devices; s; s = s->next) { | |
222 | /* If this driver doesn't support loop back, skip it */ | |
223 | if (!s->loop) | |
224 | continue; | |
225 | ||
226 | /* Test the next device */ | |
227 | serial_current = s; | |
228 | ||
229 | ret = serial_init(); | |
230 | if (ret) | |
231 | goto done; | |
232 | ||
233 | /* Consume anything that happens to be queued */ | |
234 | while (serial_tstc()) | |
235 | serial_getc(); | |
236 | ||
237 | /* Enable loop back */ | |
238 | s->loop(1); | |
239 | ||
240 | /* Test every available baud rate */ | |
241 | for (b = 0; b < ARRAY_SIZE(bauds); ++b) { | |
242 | bd->bi_baudrate = bauds[b]; | |
243 | serial_setbrg(); | |
244 | ||
245 | /* | |
246 | * Stick to printable chars to avoid issues: | |
247 | * - terminal corruption | |
248 | * - serial program reacting to sequences and sending | |
249 | * back random extra data | |
250 | * - most serial drivers add in extra chars (like \r\n) | |
251 | */ | |
252 | for (c = 0x20; c < 0x7f; ++c) { | |
253 | /* Send it out */ | |
254 | serial_putc(c); | |
255 | ||
256 | /* Make sure it's the same one */ | |
257 | ret = (c != serial_getc()); | |
258 | if (ret) { | |
259 | s->loop(0); | |
260 | goto done; | |
261 | } | |
262 | ||
263 | /* Clean up the output in case it was sent */ | |
264 | serial_putc('\b'); | |
265 | ret = ('\b' != serial_getc()); | |
266 | if (ret) { | |
267 | s->loop(0); | |
268 | goto done; | |
269 | } | |
270 | } | |
271 | } | |
272 | ||
273 | /* Disable loop back */ | |
274 | s->loop(0); | |
275 | ||
89143fb3 MV |
276 | /* XXX: There is no serial_stop() !? */ |
277 | if (s->stop) | |
278 | s->stop(); | |
7b826c2f MF |
279 | } |
280 | ||
281 | done: | |
282 | /* Restore previous serial state */ | |
283 | serial_current = saved_dev; | |
284 | bd->bi_baudrate = saved_baud; | |
285 | serial_reinit_all(); | |
286 | serial_setbrg(); | |
287 | ||
288 | return ret; | |
289 | } | |
290 | #endif |