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,
29 /* ------------------------------------------------------------------------- */
31 #define _NOT_USED_ 0xFFFFFFFF
33 #if defined(CONFIG_DRAM_50MHZ)
35 static const uint dram_60ns[] =
36 { 0x8fffec24, 0x0fffec04, 0x0cffec04, 0x00ffec04,
37 0x00ffec00, 0x37ffec47, _NOT_USED_, _NOT_USED_,
38 0x8fffec24, 0x0fffec04, 0x08ffec04, 0x00ffec0c,
39 0x03ffec00, 0x00ffec44, 0x00ffcc08, 0x0cffcc44,
40 0x00ffec0c, 0x03ffec00, 0x00ffec44, 0x00ffcc00,
41 0x3fffc847, _NOT_USED_, _NOT_USED_, _NOT_USED_,
42 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x11bfcc47,
43 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
44 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x03afcc4c,
45 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
46 0x0cafcc00, 0x33bfcc4f, _NOT_USED_, _NOT_USED_,
47 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
48 0xc0ffcc84, 0x00ffcc04, 0x07ffcc04, 0x3fffcc06,
49 0xffffcc85, 0xffffcc05, _NOT_USED_, _NOT_USED_,
50 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
51 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
53 static const uint dram_70ns[] =
54 { 0x8fffcc24, 0x0fffcc04, 0x0cffcc04, 0x00ffcc04,
55 0x00ffcc00, 0x37ffcc47, _NOT_USED_, _NOT_USED_,
56 0x8fffcc24, 0x0fffcc04, 0x0cffcc04, 0x00ffcc04,
57 0x00ffcc08, 0x0cffcc44, 0x00ffec0c, 0x03ffec00,
58 0x00ffec44, 0x00ffcc08, 0x0cffcc44, 0x00ffec04,
59 0x00ffec00, 0x3fffec47, _NOT_USED_, _NOT_USED_,
60 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x11bfcc47,
61 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
62 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x03afcc4c,
63 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
64 0x0cafcc00, 0x33bfcc4f, _NOT_USED_, _NOT_USED_,
65 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
66 0xe0ffcc84, 0x00ffcc04, 0x00ffcc04, 0x0fffcc04,
67 0x7fffcc06, 0xffffcc85, 0xffffcc05, _NOT_USED_,
68 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
69 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
71 static const uint edo_60ns[] =
72 { 0x8ffbec24, 0x0ff3ec04, 0x0cf3ec04, 0x00f3ec04,
73 0x00f3ec00, 0x37f7ec47, _NOT_USED_, _NOT_USED_,
74 0x8fffec24, 0x0ffbec04, 0x0cf3ec04, 0x00f3ec0c,
75 0x0cf3ec00, 0x00f3ec4c, 0x0cf3ec00, 0x00f3ec4c,
76 0x0cf3ec00, 0x00f3ec44, 0x03f3ec00, 0x3ff7ec47,
77 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
78 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x11bfcc47,
79 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
80 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x03afcc4c,
81 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
82 0x0cafcc00, 0x33bfcc4f, _NOT_USED_, _NOT_USED_,
83 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
84 0xc0ffcc84, 0x00ffcc04, 0x07ffcc04, 0x3fffcc06,
85 0xffffcc85, 0xffffcc05, _NOT_USED_, _NOT_USED_,
86 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
87 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
89 static const uint edo_70ns[] =
90 { 0x8ffbcc24, 0x0ff3cc04, 0x0cf3cc04, 0x00f3cc04,
91 0x00f3cc00, 0x37f7cc47, _NOT_USED_, _NOT_USED_,
92 0x8fffcc24, 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc0c,
93 0x03f3cc00, 0x00f3cc44, 0x00f3ec0c, 0x0cf3ec00,
94 0x00f3ec4c, 0x03f3ec00, 0x00f3ec44, 0x00f3cc00,
95 0x33f7cc47, _NOT_USED_, _NOT_USED_, _NOT_USED_,
96 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x11bfcc47,
97 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
98 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x03afcc4c,
99 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
100 0x0cafcc00, 0x33bfcc47, _NOT_USED_, _NOT_USED_,
101 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
102 0xe0ffcc84, 0x00ffcc04, 0x00ffcc04, 0x0fffcc04,
103 0x7fffcc04, 0xffffcc86, 0xffffcc05, _NOT_USED_,
104 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
105 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
107 #elif defined(CONFIG_DRAM_25MHZ)
111 static const uint dram_60ns[] =
112 { 0x0fffcc04, 0x08ffcc00, 0x33ffcc47, _NOT_USED_,
113 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
114 0x0fffcc24, 0x0fffcc04, 0x08ffcc00, 0x03ffcc4c,
115 0x08ffcc00, 0x03ffcc4c, 0x08ffcc00, 0x03ffcc4c,
116 0x08ffcc00, 0x33ffcc47, _NOT_USED_, _NOT_USED_,
117 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
118 0x0fafcc04, 0x08afcc00, 0x3fbfcc47, _NOT_USED_,
119 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
120 0x0fafcc04, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
121 0x01afcc4c, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
122 0x31bfcc43, _NOT_USED_, _NOT_USED_, _NOT_USED_,
123 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
124 0x80ffcc84, 0x13ffcc04, 0xffffcc87, 0xffffcc05,
125 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
126 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
127 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
129 static const uint dram_70ns[] =
130 { 0x0fffec04, 0x08ffec04, 0x00ffec00, 0x3fffcc47,
131 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
132 0x0fffcc24, 0x0fffcc04, 0x08ffcc00, 0x03ffcc4c,
133 0x08ffcc00, 0x03ffcc4c, 0x08ffcc00, 0x03ffcc4c,
134 0x08ffcc00, 0x33ffcc47, _NOT_USED_, _NOT_USED_,
135 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
136 0x0fafcc04, 0x08afcc00, 0x3fbfcc47, _NOT_USED_,
137 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
138 0x0fafcc04, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
139 0x01afcc4c, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
140 0x31bfcc43, _NOT_USED_, _NOT_USED_, _NOT_USED_,
141 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
142 0xc0ffcc84, 0x01ffcc04, 0x7fffcc86, 0xffffcc05,
143 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
144 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
145 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
147 static const uint edo_60ns[] =
148 { 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc00, 0x33f7cc47,
149 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
150 0x0ffbcc04, 0x09f3cc0c, 0x09f3cc0c, 0x09f3cc0c,
151 0x08f3cc00, 0x3ff7cc47, _NOT_USED_, _NOT_USED_,
152 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
153 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
154 0x0fefcc04, 0x08afcc04, 0x00afcc00, 0x3fbfcc47,
155 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
156 0x0fefcc04, 0x08afcc00, 0x07afcc48, 0x08afcc48,
157 0x08afcc48, 0x39bfcc47, _NOT_USED_, _NOT_USED_,
158 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
159 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
160 0x80ffcc84, 0x13ffcc04, 0xffffcc87, 0xffffcc05,
161 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
162 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
163 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
165 static const uint edo_70ns[] =
166 { 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc00, 0x33f7cc47,
167 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
168 0x0ffbec04, 0x08f3ec04, 0x03f3ec48, 0x08f3cc00,
169 0x0ff3cc4c, 0x08f3cc00, 0x0ff3cc4c, 0x08f3cc00,
170 0x3ff7cc47, _NOT_USED_, _NOT_USED_, _NOT_USED_,
171 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
172 0x0fefcc04, 0x08afcc04, 0x00afcc00, 0x3fbfcc47,
173 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
174 0x0fefcc04, 0x08afcc00, 0x07afcc4c, 0x08afcc00,
175 0x07afcc4c, 0x08afcc00, 0x07afcc4c, 0x08afcc00,
176 0x37bfcc47, _NOT_USED_, _NOT_USED_, _NOT_USED_,
177 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
178 0xc0ffcc84, 0x01ffcc04, 0x7fffcc86, 0xffffcc05,
179 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
180 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
181 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
183 #error dram not correctly defined - use CONFIG_DRAM_25MHZ or CONFIG_DRAM_50MHZ
186 /* ------------------------------------------------------------------------- */
190 * Check Board Identity:
193 #if defined(CONFIG_FADS) && !defined(CONFIG_MPC86xADS)
194 static void checkdboard(void)
196 /* get db type from BCSR 3 */
197 uint k = (*((uint *)BCSR3) >> 24) & 0x3f;
212 puts ("MPC821, MPC860 / MPC860SAR / MPC860T");
224 default : printf("0x%x", k);
227 #endif /* defined(CONFIG_FADS) && !defined(CONFIG_MPC86xADS) */
229 int checkboard (void)
231 /* get revision from BCSR 3 */
232 uint r = (((*((uint *) BCSR3) >> 23) & 1) << 3)
233 | (((*((uint *) BCSR3) >> 19) & 1) << 2)
234 | (((*((uint *) BCSR3) >> 16) & 3));
239 # ifdef CONFIG_MPC86xADS
244 # endif /* !CONFIG_MPC86xADS */
255 printf ("unknown (0x%x)\n", r);
258 #endif /* CONFIG_FADS */
265 puts ("ENG - this board sucks, check the errata, not supported\n");
268 puts ("PILOT - warning, read errata \n");
271 puts ("A - warning, read errata \n");
277 printf ("unknown revision (0x%x)\n", r);
280 #endif /* CONFIG_ADS */
285 /* ------------------------------------------------------------------------- */
286 static long int dram_size (long int *base, long int maxsize)
288 volatile long int *addr=base;
290 ulong save[32]; /* to make test non-destructive */
293 for (cnt = maxsize / sizeof (long); cnt > 0; cnt >>= 1) {
294 addr = base + cnt; /* pointer arith! */
300 /* write 0 to base address */
305 /* check at base address */
306 if ((val = *addr) != 0) {
311 for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) {
312 addr = base + cnt; /* pointer arith! */
318 return (cnt * sizeof (long));
324 /* ------------------------------------------------------------------------- */
325 static int _draminit (uint base, uint noMbytes, uint edo, uint delay)
327 volatile immap_t *immap = (immap_t *) CFG_IMMR;
328 volatile memctl8xx_t *memctl = &immap->im_memctl;
335 upmconfig (UPMA, (uint *) edo_70ns,
336 sizeof (edo_70ns) / sizeof (uint));
338 upmconfig (UPMA, (uint *) dram_70ns,
339 sizeof (dram_70ns) / sizeof (uint));
346 upmconfig (UPMA, (uint *) edo_60ns,
347 sizeof (edo_60ns) / sizeof (uint));
349 upmconfig (UPMA, (uint *) dram_60ns,
350 sizeof (dram_60ns) / sizeof (uint));
359 memctl->memc_mptpr = 0x0400; /* divide by 16 */
362 case 4: /* 4 Mbyte uses only CS2 */
364 memctl->memc_mamr = 0xc0a21114;
366 memctl->memc_mamr = 0x13a01114; /* PTA 0x13 AMA 010 */
368 memctl->memc_or2 = 0xffc00800; /* 4M */
371 case 8: /* 8 Mbyte uses both CS3 and CS2 */
372 memctl->memc_mamr = 0x13a01114; /* PTA 0x13 AMA 010 */
373 memctl->memc_or3 = 0xffc00800; /* 4M */
374 memctl->memc_br3 = 0x00400081 + base;
375 memctl->memc_or2 = 0xffc00800; /* 4M */
378 case 16: /* 16 Mbyte uses only CS2 */
379 #ifdef CONFIG_ADS /* XXX: why PTA=0x60 only in 16M case? - NTL */
380 memctl->memc_mamr = 0x60b21114; /* PTA 0x60 AMA 011 */
382 memctl->memc_mamr = 0x13b01114; /* PTA 0x13 AMA 011 */
384 memctl->memc_or2 = 0xff000800; /* 16M */
387 case 32: /* 32 Mbyte uses both CS3 and CS2 */
388 memctl->memc_mamr = 0x13b01114; /* PTA 0x13 AMA 011 */
389 memctl->memc_or3 = 0xff000800; /* 16M */
390 memctl->memc_br3 = 0x01000081 + base;
391 memctl->memc_or2 = 0xff000800; /* 16M */
398 memctl->memc_br2 = 0x81 + base; /* use upma */
400 *((uint *) BCSR1) &= ~BCSR1_DRAM_EN; /* enable dram */
402 /* if no dimm is inserted, noMbytes is still detected as 8m, so
403 * sanity check top and bottom of memory */
405 /* check bytes / 2 because dram_size tests at base+bytes, which
408 if (dram_size ((long *) base, noMbytes << 19) != noMbytes << 19) {
409 *((uint *) BCSR1) |= BCSR1_DRAM_EN; /* disable dram */
416 /* ------------------------------------------------------------------------- */
418 static void _dramdisable(void)
420 volatile immap_t *immap = (immap_t *)CFG_IMMR;
421 volatile memctl8xx_t *memctl = &immap->im_memctl;
423 memctl->memc_br2 = 0x00000000;
424 memctl->memc_br3 = 0x00000000;
426 /* maybe we should turn off upma here or something */
430 /* SDRAM SUPPORT (FADS ONLY) */
432 #if defined(CONFIG_SDRAM_100MHZ)
434 /* ------------------------------------------------------------------------- */
435 /* sdram table by Dan Malek */
437 /* This has the stretched early timing so the 50 MHz
438 * processor can make the 100 MHz timing. This will
439 * work at all processor speeds.
442 #ifdef SDRAM_ALT_INIT_SEQENCE
443 # define SDRAM_MBMRVALUE0 0xc3802114 /* PTx=195,PTxE,AMx=0,DSx=1,A11,RLFx=1,WLFx=1,TLFx=4 */
444 #define SDRAM_MBMRVALUE1 SDRAM_MBMRVALUE0
445 # define SDRAM_MCRVALUE0 0x80808111 /* run upmb cs4 loop 1 addr 0x11 MRS */
446 # define SDRAM_MCRVALUE1 SDRAM_MCRVALUE0 /* ??? why not 0x80808130? */
448 # define SDRAM_MxMR_PTx 195
449 # define UPM_MRS_ADDR 0x11
450 # define UPM_REFRESH_ADDR 0x30 /* or 0x11 if we want to be like above? */
451 #endif /* !SDRAM_ALT_INIT_SEQUENCE */
453 static const uint sdram_table[] =
455 /* single read. (offset 0 in upm RAM) */
456 0xefebfc24, 0x1f07fc24, 0xeeaefc04, 0x11adfc04,
457 0xefbbbc00, 0x1ff77c45, _NOT_USED_, _NOT_USED_,
459 /* burst read. (offset 8 in upm RAM) */
460 0xefebfc24, 0x1f07fc24, 0xeeaefc04, 0x10adfc04,
461 0xf0affc00, 0xf0affc00, 0xf1affc00, 0xefbbbc00,
464 /* precharge + MRS. (offset 11 in upm RAM) */
465 0xeffbbc04, 0x1ff77c34, 0xefeabc34,
466 0x1fb57c35, _NOT_USED_, _NOT_USED_, _NOT_USED_,
468 /* single write. (offset 18 in upm RAM) */
469 0xefebfc24, 0x1f07fc24, 0xeeaebc00, 0x01b93c04,
470 0x1ff77c45, _NOT_USED_, _NOT_USED_, _NOT_USED_,
472 /* burst write. (offset 20 in upm RAM) */
473 0xefebfc24, 0x1f07fc24, 0xeeaebc00, 0x10ad7c00,
474 0xf0affc00, 0xf0affc00, 0xe1bbbc04, 0x1ff77c45,
475 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
476 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
478 /* refresh. (offset 30 in upm RAM) */
479 0xeffafc84, 0x1ff5fc04, 0xfffffc04, 0xfffffc04,
480 0xfffffc84, 0xfffffc07, _NOT_USED_, _NOT_USED_,
481 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
483 /* exception. (offset 3c in upm RAM) */
484 0xeffffc06, 0x1ffffc07, _NOT_USED_, _NOT_USED_ };
486 #elif defined(CONFIG_SDRAM_50MHZ)
488 /* ------------------------------------------------------------------------- */
489 /* sdram table stolen from the fads manual */
490 /* for chip MB811171622A-100 */
492 /* this table is for 32-50MHz operation */
493 #ifdef SDRAM_ALT_INIT_SEQENCE
494 # define SDRAM_MBMRVALUE0 0x80802114 /* PTx=128,PTxE,AMx=0,DSx=1,A11,RLFx=1,WLFx=1,TLFx=4 */
495 # define SDRAM_MBMRVALUE1 0x80802118 /* PTx=128,PTxE,AMx=0,DSx=1,A11,RLFx=1,WLFx=1,TLFx=8 */
496 # define SDRAM_MCRVALUE0 0x80808105 /* run upmb cs4 loop 1 addr 0x5 MRS */
497 # define SDRAM_MCRVALUE1 0x80808130 /* run upmb cs4 loop 1 addr 0x30 REFRESH */
498 # define SDRAM_MPTRVALUE 0x400
499 #define SDRAM_MARVALUE 0x88
501 # define SDRAM_MxMR_PTx 128
502 # define UPM_MRS_ADDR 0x5
503 # define UPM_REFRESH_ADDR 0x30
504 #endif /* !SDRAM_ALT_INIT_SEQUENCE */
506 static const uint sdram_table[] =
508 /* single read. (offset 0 in upm RAM) */
509 0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00,
512 /* precharge + MRS. (offset 5 in upm RAM) */
513 0x1ff77c34, 0xefeabc34, 0x1fb57c35,
515 /* burst read. (offset 8 in upm RAM) */
516 0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00,
517 0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47,
518 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
519 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
521 /* single write. (offset 18 in upm RAM) */
522 0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47,
523 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
525 /* burst write. (offset 20 in upm RAM) */
526 0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
527 0xf0affc00, 0xe1bbbc04, 0x1ff77c47, _NOT_USED_,
528 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
529 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
531 /* refresh. (offset 30 in upm RAM) */
532 0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
533 0xfffffc84, 0xfffffc07, _NOT_USED_, _NOT_USED_,
534 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
536 /* exception. (offset 3c in upm RAM) */
537 0x7ffffc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
539 /* ------------------------------------------------------------------------- */
541 #error SDRAM not correctly configured
543 /* ------------------------------------------------------------------------- */
546 * Memory Periodic Timer Prescaler
549 #define SDRAM_OR4VALUE 0x00000a00 /* SAM,GL5A/S=01,addr mask or'ed on later */
550 #define SDRAM_BR4VALUE 0x000000c1 /* UPMB,base addr or'ed on later */
552 /* ------------------------------------------------------------------------- */
553 #ifdef SDRAM_ALT_INIT_SEQENCE
554 /* ------------------------------------------------------------------------- */
556 static int _initsdram(uint base, uint noMbytes)
558 volatile immap_t *immap = (immap_t *)CFG_IMMR;
559 volatile memctl8xx_t *memctl = &immap->im_memctl;
561 upmconfig(UPMB, (uint *)sdram_table,sizeof(sdram_table)/sizeof(uint));
563 memctl->memc_mptpr = SDRAM_MPTPRVALUE;
565 /* Configure the refresh (mostly). This needs to be
566 * based upon processor clock speed and optimized to provide
567 * the highest level of performance. For multiple banks,
568 * this time has to be divided by the number of banks.
569 * Although it is not clear anywhere, it appears the
570 * refresh steps through the chip selects for this UPM
571 * on each refresh cycle.
572 * We have to be careful changing
573 * UPM registers after we ask it to run these commands.
576 memctl->memc_mbmr = SDRAM_MBMRVALUE0; /* TLF 4 */
577 memctl->memc_mar = SDRAM_MARVALUE; /* MRS code */
581 /* Now run the precharge/nop/mrs commands.
584 memctl->memc_mcr = 0x80808111; /* run umpb cs4 1 count 1, addr 0x11 ??? (50Mhz) */
585 /* run umpb cs4 1 count 1, addr 0x11 precharge+MRS (100Mhz) */
588 /* Run 8 refresh cycles */
590 memctl->memc_mcr = SDRAM_MCRVALUE0; /* run upmb cs4 loop 1 addr 0x5 precharge+MRS (50 Mhz)*/
591 /* run upmb cs4 loop 1 addr 0x11 precharge+MRS (100MHz) */
595 memctl->memc_mbmr = SDRAM_MBMRVALUE1; /* TLF 4 (100 Mhz) or TLF 8 (50MHz) */
596 memctl->memc_mcr = SDRAM_MCRVALUE1; /* run upmb cs4 loop 1 addr 0x30 refr (50 Mhz) */
597 /* run upmb cs4 loop 1 addr 0x11 precharge+MRS ??? (100MHz) */
601 memctl->memc_mbmr = SDRAM_MBMRVALUE0; /* TLF 4 */
603 memctl->memc_or4 = SDRAM_OR4VALUE | ~((noMbytes<<20)-1);
604 memctl->memc_br4 = SDRAM_BR4VALUE | base;
609 /* ------------------------------------------------------------------------- */
610 #else /* !SDRAM_ALT_INIT_SEQUENCE */
611 /* ------------------------------------------------------------------------- */
613 /* refresh rate 15.6 us (= 64 ms / 4K = 62.4 / quad bursts) for <= 128 MBit */
614 # define MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */
615 # define MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */
617 /* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit */
618 # define MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */
619 # define MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */
622 * MxMR settings for SDRAM
626 # define SDRAM_MxMR_8COL ((SDRAM_MxMR_PTx << MBMR_PTB_SHIFT) | MBMR_PTBE | \
627 MBMR_AMB_TYPE_0 | MBMR_DSB_1_CYCL | MBMR_G0CLB_A11 | \
628 MBMR_RLFB_1X | MBMR_WLFB_1X | MBMR_TLFB_4X)
630 # define SDRAM_MxMR_9COL ((SDRAM_MxMR_PTx << MBMR_PTB_SHIFT) | MBMR_PTAE | \
631 MBMR_AMB_TYPE_1 | MBMR_DSB_1_CYCL | MBMR_G0CLB_A10 | \
632 MBMR_RLFB_1X | MBMR_WLFB_1X | MBMR_TLFB_4X)
634 static int _initsdram(uint base, uint noMbytes)
636 volatile immap_t *immap = (immap_t *)CFG_IMMR;
637 volatile memctl8xx_t *memctl = &immap->im_memctl;
639 upmconfig(UPMB, (uint *)sdram_table,sizeof(sdram_table)/sizeof(uint));
641 memctl->memc_mptpr = MPTPR_2BK_4K;
642 memctl->memc_mbmr = SDRAM_MxMR_8COL & (~(MBMR_PTBE)); /* no refresh yet */
645 memctl->memc_or4 = SDRAM_OR4VALUE | ~((noMbytes<<20)-1);
646 memctl->memc_br4 = SDRAM_BR4VALUE | base;
648 /* Perform SDRAM initilization */
649 # ifdef UPM_NOP_ADDR /* not currently in UPM table */
651 memctl->memc_mar = 0x00000000;
652 memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 |
653 MCR_MLCF(0) | UPM_NOP_ADDR;
659 # ifdef UPM_PRECHARGE_ADDR /* merged with MRS in UPM table */
660 /* step 3: precharge */
661 memctl->memc_mar = 0x00000000;
662 memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 |
663 MCR_MLCF(4) | UPM_PRECHARGE_ADDR;
666 /* step 4: refresh */
667 memctl->memc_mar = 0x00000000;
668 memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 |
669 MCR_MLCF(2) | UPM_REFRESH_ADDR;
672 * note: for some reason, the UPM values we are using include
677 memctl->memc_mar = 0x00000088;
678 memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 |
679 MCR_MLCF(1) | UPM_MRS_ADDR;
682 memctl->memc_mar = 0x00000000;
683 memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 |
684 MCR_MLCF(0) | UPM_NOP_ADDR;
690 memctl->memc_mbmr |= MBMR_PTBE;
693 #endif /* !SDRAM_ALT_INIT_SEQUENCE */
695 /* ------------------------------------------------------------------------- */
697 static void _sdramdisable(void)
699 volatile immap_t *immap = (immap_t *)CFG_IMMR;
700 volatile memctl8xx_t *memctl = &immap->im_memctl;
702 memctl->memc_br4 = 0x00000000;
704 /* maybe we should turn off upmb here or something */
707 /* ------------------------------------------------------------------------- */
709 static int initsdram(uint base, uint *noMbytes)
711 uint m = CFG_SDRAM_SIZE>>20;
713 /* _initsdram needs access to sdram */
714 *((uint *)BCSR1) |= BCSR1_SDRAM_EN; /* enable sdram */
716 if(!_initsdram(base, m))
723 *((uint *)BCSR1) &= ~BCSR1_SDRAM_EN; /* disable sdram */
731 /* SDRAM SUPPORT (FADS ONLY) */
732 #endif /* CONFIG_FADS */
734 long int initdram (int board_type)
736 uint sdramsz = 0; /* size of sdram in Mbytes */
737 uint base = 0; /* base of dram in bytes */
738 uint m = 0; /* size of dram in Mbytes */
742 if (!initsdram (0x00000000, &sdramsz)) {
743 base = sdramsz << 20;
744 printf ("(%u MB SDRAM) ", sdramsz);
748 k = (*((uint *) BCSR2) >> 23) & 0x0f;
751 /* "MCM36100 / MT8D132X" */
756 /* "MCM36800 / MT16D832X" */
760 /* "MCM36400 / MT8D432X" */
764 /* "MCM36200 / MT16D832X ?" */
781 printf ("unknown dramdelay (0x%x) - defaulting to 70 ns", k);
786 /* the FADS is missing this bit, all rams treated as non-edo */
789 s = (*((uint *) BCSR2) >> 27) & 0x01;
792 if (!_draminit (base, m, s, k)) {
793 printf ("%dM %dns %sDRAM: ", m, k, s ? "EDO " : "");
799 m += sdramsz; /* add sdram size to total */
802 /********************************
803 *DRAM ERROR, HALT PROCESSOR
804 *********************************/
812 /* ------------------------------------------------------------------------- */
816 /* TODO: XXX XXX XXX */
817 printf ("test: 16 MB - ok\n");
823 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
825 #ifdef CFG_PCMCIA_MEM_ADDR
826 volatile unsigned char *pcmcia_mem = (unsigned char*)CFG_PCMCIA_MEM_ADDR;
829 int pcmcia_init(void)
831 volatile pcmconf8xx_t *pcmp;
832 uint v, slota, slotb;
835 ** Enable the PCMCIA for a Flash card.
837 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
840 pcmp->pcmc_pbr0 = CFG_PCMCIA_MEM_ADDR;
841 pcmp->pcmc_por0 = 0xc00ff05d;
844 /* Set all slots to zero by default. */
845 pcmp->pcmc_pgcra = 0;
846 pcmp->pcmc_pgcrb = 0;
848 pcmp->pcmc_pgcra = 0x40;
851 pcmp->pcmc_pgcrb = 0x40;
854 /* enable PCMCIA buffers */
855 *((uint *)BCSR1) &= ~BCSR1_PCCEN;
857 /* Check if any PCMCIA card is plugged in. */
859 slota = (pcmp->pcmc_pipr & 0x18000000) == 0 ;
860 slotb = (pcmp->pcmc_pipr & 0x00001800) == 0 ;
862 if (!(slota || slotb)) {
863 printf("No card present\n");
865 pcmp->pcmc_pgcra = 0;
868 pcmp->pcmc_pgcrb = 0;
873 printf("Card present (");
877 /* both the ADS and the FADS have a 5V keyed pcmcia connector (?)
879 ** Paolo - Yes, but i have to insert some 3.3V card in that slot on
883 #if defined(CONFIG_MPC86x)
884 switch ((pcmp->pcmc_pipr >> 30) & 3)
885 #elif defined(CONFIG_MPC823) || defined(CONFIG_MPC850)
886 switch ((pcmp->pcmc_pipr >> 14) & 3)
896 v = 3; /* User lower voltage if supported! */
902 printf("5V, 3V and x.xV");
904 v = 3; /* User lower voltage if supported! */
914 printf("; using 3V");
916 ** Enable 3 volt Vcc.
918 *((uint *)BCSR1) &= ~BCSR1_PCCVCC1;
919 *((uint *)BCSR1) |= BCSR1_PCCVCC0;
923 printf("; using 5V");
926 ** Enable 5 volt Vcc.
928 *((uint *)BCSR1) &= ~BCSR1_PCCVCCON;
932 ** Enable 5 volt Vcc.
934 *((uint *)BCSR1) &= ~BCSR1_PCCVCC0;
935 *((uint *)BCSR1) |= BCSR1_PCCVCC1;
940 *((uint *)BCSR1) |= BCSR1_PCCEN; /* disable pcmcia */
942 printf("; unknown voltage");
946 /* disable pcmcia reset after a while */
951 pcmp->pcmc_pgcra = 0;
953 pcmp->pcmc_pgcrb = 0;
956 /* If you using a real hd you should give a short
958 #ifdef CONFIG_DISK_SPINUP_TIME
959 udelay(CONFIG_DISK_SPINUP_TIME);
965 #endif /* CFG_CMD_PCMCIA */
967 /* ------------------------------------------------------------------------- */
969 #ifdef CFG_PC_IDE_RESET
971 void ide_set_reset(int on)
973 volatile immap_t *immr = (immap_t *)CFG_IMMR;
976 * Configure PC for IDE Reset Pin
978 if (on) { /* assert RESET */
979 immr->im_ioport.iop_pcdat &= ~(CFG_PC_IDE_RESET);
980 } else { /* release RESET */
981 immr->im_ioport.iop_pcdat |= CFG_PC_IDE_RESET;
984 /* program port pin as GPIO output */
985 immr->im_ioport.iop_pcpar &= ~(CFG_PC_IDE_RESET);
986 immr->im_ioport.iop_pcso &= ~(CFG_PC_IDE_RESET);
987 immr->im_ioport.iop_pcdir |= CFG_PC_IDE_RESET;
990 #endif /* CFG_PC_IDE_RESET */
991 /* ------------------------------------------------------------------------- */