aboutsummaryrefslogtreecommitdiff
path: root/board/pm828/pm828.c
blob: 31932742a82a60a2601342fd3243529b4e4fb1a3 (plain)
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 2001-2004
 * 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
 */

#include <common.h>
#include <ioports.h>
#include <mpc8260.h>
#include <pci.h>

/*
 * I/O Port configuration table
 *
 * if conf is 1, then that port pin will be configured at boot time
 * according to the five values podr/pdir/ppar/psor/pdat for that entry
 */

const iop_conf_t iop_conf_tab[4][32] = {

    /* Port A configuration */
    {	/*	      conf ppar psor pdir podr pdat */
	/* PA31 */ {   1,   1,   1,   0,   0,   0   }, /* FCC1 COL */
	/* PA30 */ {   1,   1,   1,   0,   0,   0   }, /* FCC1 CRS */
	/* PA29 */ {   1,   1,   1,   1,   0,   0   }, /* FCC1 TXER */
	/* PA28 */ {   1,   1,   1,   1,   0,   0   }, /* FCC1 TXEN */
	/* PA27 */ {   1,   1,   1,   0,   0,   0   }, /* FCC1 RXDV */
	/* PA26 */ {   1,   1,   1,   0,   0,   0   }, /* FCC1 RXER */
	/* PA25 */ {   0,   0,   0,   1,   0,   0   }, /* PA25 */
	/* PA24 */ {   0,   0,   0,   1,   0,   0   }, /* PA24 */
	/* PA23 */ {   0,   0,   0,   1,   0,   0   }, /* PA23 */
	/* PA22 */ {   0,   0,   0,   1,   0,   0   }, /* PA22 */
	/* PA21 */ {   1,   1,   0,   1,   0,   0   }, /* FCC1 TXD3 */
	/* PA20 */ {   1,   1,   0,   1,   0,   0   }, /* FCC1 TXD2 */
	/* PA19 */ {   1,   1,   0,   1,   0,   0   }, /* FCC1 TXD1 */
	/* PA18 */ {   1,   1,   0,   1,   0,   0   }, /* FCC1 TXD0 */
	/* PA17 */ {   1,   1,   0,   0,   0,   0   }, /* FCC1 RXD0 */
	/* PA16 */ {   1,   1,   0,   0,   0,   0   }, /* FCC1 RXD1*/
	/* PA15 */ {   1,   1,   0,   0,   0,   0   }, /* FCC1 RXD2 */
	/* PA14 */ {   1,   1,   0,   0,   0,   0   }, /* FCC1 RXD3 */
	/* PA13 */ {   0,   0,   0,   1,   0,   0   }, /* PA13 */
	/* PA12 */ {   0,   0,   0,   1,   0,   0   }, /* PA12 */
	/* PA11 */ {   0,   0,   0,   1,   0,   0   }, /* PA11 */
	/* PA10 */ {   0,   0,   0,   1,   0,   0   }, /* PA10 */
	/* PA9  */ {   0,   1,   0,   1,   0,   0   }, /* PA9 */
	/* PA8  */ {   0,   1,   0,   0,   0,   0   }, /* PA8 */
	/* PA7  */ {   0,   0,   0,   1,   0,   0   }, /* PA7 */
	/* PA6  */ {   0,   0,   0,   1,   0,   0   }, /* PA6 */
	/* PA5  */ {   0,   0,   0,   1,   0,   0   }, /* PA5 */
	/* PA4  */ {   0,   0,   0,   1,   0,   0   }, /* PA4 */
	/* PA3  */ {   0,   0,   0,   1,   0,   0   }, /* PA3 */
	/* PA2  */ {   0,   0,   0,   1,   0,   0   }, /* PA2 */
	/* PA1  */ {   0,   0,   0,   1,   0,   0   }, /* PA1 */
	/* PA0  */ {   0,   0,   0,   1,   0,   0   }  /* PA0 */
    },

    /* Port B configuration */
    {   /*	      conf ppar psor pdir podr pdat */
	/* PB31 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 TX_ER */
	/* PB30 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 RX_DV  */
	/* PB29 */ {   1,   1,   1,   1,   0,   0   }, /* FCC2 TX_EN  */
#if defined(CONFIG_ETHER_ON_SCC) && (CONFIG_ETHER_INDEX == 1)
#ifdef CONFIG_ETHER_ON_FCC2
#error "SCC1 conflicts with FCC2"
#endif
	/* PB28 */ {   1,   1,   1,   1,   0,   0   }, /* SCC1 TXD */
#else
	/* PB28 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 RX_ER */
#endif
	/* PB27 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 COL */
	/* PB26 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 CRS */
	/* PB25 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 TxD[3] */
	/* PB24 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 TxD[2] */
	/* PB23 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 TxD[1] */
	/* PB22 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 TxD[0] */
	/* PB21 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 RxD[0] */
	/* PB20 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 RxD[1] */
	/* PB19 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 RxD[2] */
	/* PB18 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 RxD[3] */
	/* PB17 */ {   0,   0,   0,   0,   0,   0   }, /* PB17 */
	/* PB16 */ {   0,   0,   0,   0,   0,   0   }, /* PB16 */
	/* PB15 */ {   1,   1,   0,   0,   0,   0   }, /* SCC2 RXD */
	/* PB14 */ {   1,   1,   0,   0,   0,   0   }, /* SCC3 RXD */
	/* PB13 */ {   0,   0,   0,   0,   0,   0   }, /* PB13 */
	/* PB12 */ {   0,   0,   0,   0,   0,   0   }, /* PB12 */
	/* PB11 */ {   0,   0,   0,   0,   0,   0   }, /* PB11 */
	/* PB10 */ {   0,   0,   0,   0,   0,   0   }, /* PB10 */
	/* PB9  */ {   0,   0,   0,   0,   0,   0   }, /* PB9 */
	/* PB8  */ {   1,   1,   1,   1,   0,   0   }, /* SCC3 TXD */
	/* PB7  */ {   0,   0,   0,   0,   0,   0   }, /* PB7 */
	/* PB6  */ {   0,   0,   0,   0,   0,   0   }, /* PB6 */
	/* PB5  */ {   0,   0,   0,   0,   0,   0   }, /* PB5 */
	/* PB4  */ {   0,   0,   0,   0,   0,   0   }, /* PB4 */
	/* PB3  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
	/* PB2  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
	/* PB1  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
	/* PB0  */ {   0,   0,   0,   0,   0,   0   }  /* pin doesn't exist */
    },

    /* Port C */
    {   /*	      conf ppar psor pdir podr pdat */
	/* PC31 */ {   0,   0,   0,   1,   0,   0   }, /* PC31 */
	/* PC30 */ {   0,   0,   0,   1,   0,   0   }, /* PC30 */
	/* PC29 */ {   0,   1,   1,   0,   0,   0   }, /* SCC1 CTS */
	/* PC28 */ {   0,   0,   0,   1,   0,   0   }, /* SCC2 CTS */
	/* PC27 */ {   0,   0,   0,   1,   0,   0   }, /* PC27 */
	/* PC26 */ {   0,   0,   0,   1,   0,   0   }, /* PC26 */
	/* PC25 */ {   0,   0,   0,   1,   0,   0   }, /* PC25 */
	/* PC24 */ {   0,   0,   0,   1,   0,   0   }, /* PC24 */
	/* PC23 */ {   0,   1,   0,   1,   0,   0   }, /* PC23 */
	/* PC22 */ {   1,   1,   0,   0,   0,   0   }, /* FCC1 TXCK */
	/* PC21 */ {   1,   1,   0,   0,   0,   0   }, /* FCC1 RXCK */
	/* PC20 */ {   1,   1,   0,   0,   0,   0   }, /* FCC1 TXCK(2) */
	/* PC19 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 RXCK */
	/* PC18 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 TXCK */
	/* PC17 */ {   0,   0,   0,   1,   0,   0   }, /* PC17 */
	/* PC16 */ {   0,   0,   0,   1,   0,   0   }, /* PC16 */
	/* PC15 */ {   1,   1,   0,   1,   0,   0   }, /* SMC2 TXD */
	/* PC14 */ {   0,   1,   0,   0,   0,   0   }, /* SCC1 DCD */
	/* PC13 */ {   0,   0,   0,   1,   0,   0   }, /* PC13 */
	/* PC12 */ {   0,   0,   0,   1,   0,   0   }, /* SCC2 DCD */
	/* PC11 */ {   0,   0,   0,   1,   0,   0   }, /* SCC3 CTS */
	/* PC10 */ {   0,   0,   0,   1,   0,   0   }, /* SCC3 DCD */
	/* PC9  */ {   0,   0,   0,   1,   0,   0   }, /* SCC4 CTS */
	/* PC8  */ {   0,   0,   0,   1,   0,   0   }, /* SCC4 DCD */
	/* PC7  */ {   0,   0,   0,   1,   0,   0   }, /* PC7 */
	/* PC6  */ {   0,   0,   0,   1,   0,   0   }, /* PC6 */
	/* PC5  */ {   0,   0,   0,   1,   0,   0   }, /* PC5 */
	/* PC4  */ {   0,   0,   0,   1,   0,   0   }, /* PC4 */
	/* PC3  */ {   0,   0,   0,   1,   0,   0   }, /* PC3 */
	/* PC2  */ {   0,   0,   0,   1,   0,   1   }, /* PC2 */
	/* PC1  */ {   0,   0,   0,   1,   0,   0   }, /* PC1 */
	/* PC0  */ {   0,   0,   0,   1,   0,   0   }, /* PC0 */
    },

    /* Port D */
    {   /*	      conf ppar psor pdir podr pdat */
	/* PD31 */ {   1,   1,   0,   0,   0,   0   }, /* SCC1 RXD */
	/* PD30 */ {   0,   1,   1,   1,   0,   0   }, /* PD30 */
	/* PD29 */ {   0,   1,   0,   1,   0,   0   }, /* SCC1 RTS */
	/* PD28 */ {   0,   0,   0,   1,   0,   0   }, /* PD28 */
	/* PD27 */ {   0,   1,   0,   1,   0,   0   }, /* SCC2 RTS */
	/* PD26 */ {   0,   0,   0,   1,   0,   0   }, /* PD26 */
	/* PD25 */ {   0,   0,   0,   1,   0,   0   }, /* PD25 */
	/* PD24 */ {   0,   0,   0,   1,   0,   0   }, /* PD24 */
	/* PD23 */ {   0,   0,   0,   1,   0,   0   }, /* SCC3 RTS */
	/* PD22 */ {   1,   1,   0,   0,   0,   0   }, /* SCC4 RXD */
	/* PD21 */ {   1,   1,   0,   1,   0,   0   }, /* SCC4 TXD */
	/* PD20 */ {   0,   0,   1,   1,   0,   0   }, /* SCC4 RTS */
	/* PD19 */ {   0,   0,   0,   1,   0,   0   }, /* PD19 */
	/* PD18 */ {   0,   0,   0,   1,   0,   0   }, /* PD18 */
	/* PD17 */ {   0,   1,   0,   0,   0,   0   }, /* PD17 */
	/* PD16 */ {   0,   1,   0,   1,   0,   0   }, /* PD16 */
#if defined(CONFIG_SOFT_I2C)
	/* PD15 */ {   1,   0,   0,   1,   1,   1   }, /* I2C SDA */
	/* PD14 */ {   1,   0,   0,   1,   1,   1   }, /* I2C SCL */
#else
#if defined(CONFIG_HARD_I2C)
	/* PD15 */ {   1,   1,   1,   0,   1,   0   }, /* I2C SDA */
	/* PD14 */ {   1,   1,   1,   0,   1,   0   }, /* I2C SCL */
#else /* normal I/O port pins */
	/* PD15 */ {   0,   1,   1,   0,   1,   0   }, /* I2C SDA */
	/* PD14 */ {   0,   1,   1,   0,   1,   0   }, /* I2C SCL */
#endif
#endif
	/* PD13 */ {   0,   0,   0,   0,   0,   0   }, /* PD13 */
	/* PD12 */ {   0,   0,   0,   0,   0,   0   }, /* PD12 */
	/* PD11 */ {   0,   0,   0,   0,   0,   0   }, /* PD11 */
	/* PD10 */ {   0,   0,   0,   0,   0,   0   }, /* PD10 */
	/* PD9  */ {   0,   1,   0,   1,   0,   0   }, /* PD9 */
	/* PD8  */ {   0,   1,   0,   0,   0,   0   }, /* PD8 */
	/* PD7  */ {   0,   0,   0,   1,   0,   1   }, /* PD7 */
	/* PD6  */ {   0,   0,   0,   1,   0,   1   }, /* PD6 */
	/* PD5  */ {   0,   0,   0,   1,   0,   1   }, /* PD5 */
	/* PD4  */ {   1,   1,   1,   0,   0,   0   }, /* SMC2 RXD */
	/* PD3  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
	/* PD2  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
	/* PD1  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
	/* PD0  */ {   0,   0,   0,   0,   0,   0   }  /* pin doesn't exist */
    }
};

/* ------------------------------------------------------------------------- */

/* Check Board Identity:
 */
int checkboard (void)
{
	puts ("Board: PM828\n");
	return 0;
}

/* ------------------------------------------------------------------------- */


/* Try SDRAM initialization with P/LSDMR=sdmr and ORx=orx
 *
 * This routine performs standard 8260 initialization sequence
 * and calculates the available memory size. It may be called
 * several times to try different SDRAM configurations on both
 * 60x and local buses.
 */
static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
						  ulong orx, volatile uchar * base)
{
	volatile uchar c = 0xff;
	volatile ulong cnt, val;
	volatile ulong *addr;
	volatile uint *sdmr_ptr;
	volatile uint *orx_ptr;
	int i;
	ulong save[32];				/* to make test non-destructive */
	ulong maxsize;

	/* We must be able to test a location outsize the maximum legal size
	 * to find out THAT we are outside; but this address still has to be
	 * mapped by the controller. That means, that the initial mapping has
	 * to be (at least) twice as large as the maximum expected size.
	 */
	maxsize = (1 + (~orx | 0x7fff)) / 2;

	sdmr_ptr = &memctl->memc_psdmr;
	orx_ptr = &memctl->memc_or2;

	*orx_ptr = orx;

	/*
	 * Quote from 8260 UM (10.4.2 SDRAM Power-On Initialization, 10-35):
	 *
	 * "At system reset, initialization software must set up the
	 *  programmable parameters in the memory controller banks registers
	 *  (ORx, BRx, P/LSDMR). After all memory parameters are configured,
	 *  system software should execute the following initialization sequence
	 *  for each SDRAM device.
	 *
	 *  1. Issue a PRECHARGE-ALL-BANKS command
	 *  2. Issue eight CBR REFRESH commands
	 *  3. Issue a MODE-SET command to initialize the mode register
	 *
	 *  The initial commands are executed by setting P/LSDMR[OP] and
	 *  accessing the SDRAM with a single-byte transaction."
	 *
	 * The appropriate BRx/ORx registers have already been set when we
	 * get here. The SDRAM can be accessed at the address CFG_SDRAM_BASE.
	 */

	*sdmr_ptr = sdmr | PSDMR_OP_PREA;
	*base = c;

	*sdmr_ptr = sdmr | PSDMR_OP_CBRR;
	for (i = 0; i < 8; i++)
		*base = c;

	*sdmr_ptr = sdmr | PSDMR_OP_MRW;
	*(base + CFG_MRS_OFFS) = c;	/* setting MR on address lines */

	*sdmr_ptr = sdmr | PSDMR_OP_NORM | PSDMR_RFEN;
	*base = c;

	/*
	 * Check memory range for valid RAM. A simple memory test determines
	 * the actually available RAM size between addresses `base' and
	 * `base + maxsize'. Some (not all) hardware errors are detected:
	 * - short between address lines
	 * - short between data lines
	 */
	i = 0;
	for (cnt = maxsize / sizeof (long); cnt > 0; cnt >>= 1) {
		addr = (volatile ulong *) base + cnt;	/* pointer arith! */
		save[i++] = *addr;
		*addr = ~cnt;
	}

	addr = (volatile ulong *) base;
	save[i] = *addr;
	*addr = 0;

	if ((val = *addr) != 0) {
		*addr = save[i];
		return (0);
	}

	for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) {
		addr = (volatile ulong *) base + cnt;	/* pointer arith! */
		val = *addr;
		*addr = save[--i];
		if (val != ~cnt) {
			/* Write the actual size to ORx
			 */
			*orx_ptr = orx | ~(cnt * sizeof (long) - 1);
			return (cnt * sizeof (long));
		}
	}
	return (maxsize);
}


long int initdram (int board_type)
{
	volatile immap_t *immap = (immap_t *) CFG_IMMR;
	volatile memctl8260_t *memctl = &immap->im_memctl;

#ifndef CFG_RAMBOOT
	ulong size8, size9;
#endif
	ulong psize = 32 * 1024 * 1024;

	memctl->memc_psrt = CFG_PSRT;
	memctl->memc_mptpr = CFG_MPTPR;

#ifndef CFG_RAMBOOT
	size8 = try_init (memctl, CFG_PSDMR_8COL, CFG_OR2_8COL,
					  (uchar *) CFG_SDRAM_BASE);
	size9 = try_init (memctl, CFG_PSDMR_9COL, CFG_OR2_9COL,
					  (uchar *) CFG_SDRAM_BASE);

	if (size8 < size9) {
		psize = size9;
		printf ("(60x:9COL) ");
	} else {
		psize = try_init (memctl, CFG_PSDMR_8COL, CFG_OR2_8COL,
						  (uchar *) CFG_SDRAM_BASE);
		printf ("(60x:8COL) ");
	}
#endif
	return (psize);
}

#if (CONFIG_COMMANDS & CFG_CMD_DOC)
extern void doc_probe (ulong physadr);
void doc_init (void)
{
	doc_probe (CFG_DOC_BASE);
}
#endif

#ifdef	CONFIG_PCI
struct pci_controller hose;

extern void pci_mpc8250_init(struct pci_controller *);

void pci_init_board(void)
{
	pci_mpc8250_init(&hose);
}
#endif