1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
|
/*
* (C) Copyright 2000 - 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* Hacked for MPC8260 by Murray.Jensen@cmst.csiro.au, 19-Oct-00, with
* changes based on the file arch/powerpc/mbxboot/m8260_tty.c from the
* Linux/PPC sources (m8260_tty.c had no copyright info in it).
*
* Martin Krause, 8 Jun 2006
* Added CONFIG_SERIAL_MULTI support
*/
/*
* Minimal serial functions needed to use one of the PSC ports
* as serial console interface.
*/
#include <common.h>
#include <mpc5xxx.h>
#if defined (CONFIG_SERIAL_MULTI)
#include <serial.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_PSC_CONSOLE)
#if CONFIG_PSC_CONSOLE == 1
#define PSC_BASE MPC5XXX_PSC1
#elif CONFIG_PSC_CONSOLE == 2
#define PSC_BASE MPC5XXX_PSC2
#elif CONFIG_PSC_CONSOLE == 3
#define PSC_BASE MPC5XXX_PSC3
#elif CONFIG_PSC_CONSOLE == 4
#define PSC_BASE MPC5XXX_PSC4
#elif CONFIG_PSC_CONSOLE == 5
#define PSC_BASE MPC5XXX_PSC5
#elif CONFIG_PSC_CONSOLE == 6
#define PSC_BASE MPC5XXX_PSC6
#else
#error CONFIG_PSC_CONSOLE must be in 1 ... 6
#endif
#if defined(CONFIG_SERIAL_MULTI) && !defined(CONFIG_PSC_CONSOLE2)
#error you must define CONFIG_PSC_CONSOLE2 if CONFIG_SERIAL_MULTI is set
#endif
#if defined(CONFIG_SERIAL_MULTI)
#if CONFIG_PSC_CONSOLE2 == 1
#define PSC_BASE2 MPC5XXX_PSC1
#elif CONFIG_PSC_CONSOLE2 == 2
#define PSC_BASE2 MPC5XXX_PSC2
#elif CONFIG_PSC_CONSOLE2 == 3
#define PSC_BASE2 MPC5XXX_PSC3
#elif CONFIG_PSC_CONSOLE2 == 4
#define PSC_BASE2 MPC5XXX_PSC4
#elif CONFIG_PSC_CONSOLE2 == 5
#define PSC_BASE2 MPC5XXX_PSC5
#elif CONFIG_PSC_CONSOLE2 == 6
#define PSC_BASE2 MPC5XXX_PSC6
#else
#error CONFIG_PSC_CONSOLE2 must be in 1 ... 6
#endif
#endif /* CONFIG_SERIAL_MULTI */
#if defined(CONFIG_SERIAL_MULTI)
int serial_init_dev (unsigned long dev_base)
#else
int serial_init (void)
#endif
{
#if defined(CONFIG_SERIAL_MULTI)
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
#endif
unsigned long baseclk;
int div;
/* reset PSC */
psc->command = PSC_SEL_MODE_REG_1;
/* select clock sources */
psc->psc_clock_select = 0;
baseclk = (gd->ipb_clk + 16) / 32;
/* switch to UART mode */
psc->sicr = 0;
/* configure parity, bit length and so on */
psc->mode = PSC_MODE_8_BITS | PSC_MODE_PARNONE;
psc->mode = PSC_MODE_ONE_STOP;
/* set up UART divisor */
div = (baseclk + (gd->baudrate/2)) / gd->baudrate;
psc->ctur = (div >> 8) & 0xff;
psc->ctlr = div & 0xff;
/* disable all interrupts */
psc->psc_imr = 0;
/* reset and enable Rx/Tx */
psc->command = PSC_RST_RX;
psc->command = PSC_RST_TX;
psc->command = PSC_RX_ENABLE | PSC_TX_ENABLE;
return (0);
}
#if defined(CONFIG_SERIAL_MULTI)
void serial_putc_dev (unsigned long dev_base, const char c)
#else
void serial_putc(const char c)
#endif
{
#if defined(CONFIG_SERIAL_MULTI)
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
#endif
if (c == '\n')
#if defined(CONFIG_SERIAL_MULTI)
serial_putc_dev (dev_base, '\r');
#else
serial_putc('\r');
#endif
/* Wait for last character to go. */
while (!(psc->psc_status & PSC_SR_TXEMP))
;
psc->psc_buffer_8 = c;
}
#if defined(CONFIG_SERIAL_MULTI)
void serial_putc_raw_dev(unsigned long dev_base, const char c)
#else
void serial_putc_raw(const char c)
#endif
{
#if defined(CONFIG_SERIAL_MULTI)
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
#endif
/* Wait for last character to go. */
while (!(psc->psc_status & PSC_SR_TXEMP))
;
psc->psc_buffer_8 = c;
}
#if defined(CONFIG_SERIAL_MULTI)
void serial_puts_dev (unsigned long dev_base, const char *s)
#else
void serial_puts (const char *s)
#endif
{
while (*s) {
#if defined(CONFIG_SERIAL_MULTI)
serial_putc_dev (dev_base, *s++);
#else
serial_putc (*s++);
#endif
}
}
#if defined(CONFIG_SERIAL_MULTI)
int serial_getc_dev (unsigned long dev_base)
#else
int serial_getc(void)
#endif
{
#if defined(CONFIG_SERIAL_MULTI)
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
#endif
/* Wait for a character to arrive. */
while (!(psc->psc_status & PSC_SR_RXRDY))
;
return psc->psc_buffer_8;
}
#if defined(CONFIG_SERIAL_MULTI)
int serial_tstc_dev (unsigned long dev_base)
#else
int serial_tstc(void)
#endif
{
#if defined(CONFIG_SERIAL_MULTI)
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
#endif
return (psc->psc_status & PSC_SR_RXRDY);
}
#if defined(CONFIG_SERIAL_MULTI)
void serial_setbrg_dev (unsigned long dev_base)
#else
void serial_setbrg(void)
#endif
{
#if defined(CONFIG_SERIAL_MULTI)
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
#endif
unsigned long baseclk, div;
baseclk = (gd->ipb_clk + 16) / 32;
/* set up UART divisor */
div = (baseclk + (gd->baudrate/2)) / gd->baudrate;
psc->ctur = (div >> 8) & 0xFF;
psc->ctlr = div & 0xff;
}
#if defined(CONFIG_SERIAL_MULTI)
void serial_setrts_dev (unsigned long dev_base, int s)
#else
void serial_setrts(int s)
#endif
{
#if defined(CONFIG_SERIAL_MULTI)
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
#endif
if (s) {
/* Assert RTS (become LOW) */
psc->op1 = 0x1;
}
else {
/* Negate RTS (become HIGH) */
psc->op0 = 0x1;
}
}
#if defined(CONFIG_SERIAL_MULTI)
int serial_getcts_dev (unsigned long dev_base)
#else
int serial_getcts(void)
#endif
{
#if defined(CONFIG_SERIAL_MULTI)
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
#endif
return (psc->ip & 0x1) ? 0 : 1;
}
#if defined(CONFIG_SERIAL_MULTI)
int serial0_init(void)
{
return (serial_init_dev(PSC_BASE));
}
int serial1_init(void)
{
return (serial_init_dev(PSC_BASE2));
}
void serial0_setbrg (void)
{
serial_setbrg_dev(PSC_BASE);
}
void serial1_setbrg (void)
{
serial_setbrg_dev(PSC_BASE2);
}
void serial0_putc(const char c)
{
serial_putc_dev(PSC_BASE,c);
}
void serial1_putc(const char c)
{
serial_putc_dev(PSC_BASE2, c);
}
void serial0_puts(const char *s)
{
serial_puts_dev(PSC_BASE, s);
}
void serial1_puts(const char *s)
{
serial_puts_dev(PSC_BASE2, s);
}
int serial0_getc(void)
{
return(serial_getc_dev(PSC_BASE));
}
int serial1_getc(void)
{
return(serial_getc_dev(PSC_BASE2));
}
int serial0_tstc(void)
{
return (serial_tstc_dev(PSC_BASE));
}
int serial1_tstc(void)
{
return (serial_tstc_dev(PSC_BASE2));
}
struct serial_device serial0_device =
{
"serial0",
"UART0",
serial0_init,
serial0_setbrg,
serial0_getc,
serial0_tstc,
serial0_putc,
serial0_puts,
};
struct serial_device serial1_device =
{
"serial1",
"UART1",
serial1_init,
serial1_setbrg,
serial1_getc,
serial1_tstc,
serial1_putc,
serial1_puts,
};
#endif /* CONFIG_SERIAL_MULTI */
#endif /* CONFIG_PSC_CONSOLE */
|
