2 * (C) Copyright 2000-2004
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Modified by, Yuli Barcohen, Arabella Software Ltd., yuli@arabellasw.com
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 #define _NOT_USED_ 0xFFFFFFFF
33 /* ========================================================================= */
35 #ifndef CONFIG_MPC885ADS /* No old DRAM on MPC885ADS */
37 #if defined(CONFIG_DRAM_50MHZ)
39 static const uint dram_60ns[] =
40 { 0x8fffec24, 0x0fffec04, 0x0cffec04, 0x00ffec04,
41 0x00ffec00, 0x37ffec47, _NOT_USED_, _NOT_USED_,
42 0x8fffec24, 0x0fffec04, 0x08ffec04, 0x00ffec0c,
43 0x03ffec00, 0x00ffec44, 0x00ffcc08, 0x0cffcc44,
44 0x00ffec0c, 0x03ffec00, 0x00ffec44, 0x00ffcc00,
45 0x3fffc847, _NOT_USED_, _NOT_USED_, _NOT_USED_,
46 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x11bfcc47,
47 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
48 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x03afcc4c,
49 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
50 0x0cafcc00, 0x33bfcc4f, _NOT_USED_, _NOT_USED_,
51 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
52 0xc0ffcc84, 0x00ffcc04, 0x07ffcc04, 0x3fffcc06,
53 0xffffcc85, 0xffffcc05, _NOT_USED_, _NOT_USED_,
54 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
55 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
57 static const uint dram_70ns[] =
58 { 0x8fffcc24, 0x0fffcc04, 0x0cffcc04, 0x00ffcc04,
59 0x00ffcc00, 0x37ffcc47, _NOT_USED_, _NOT_USED_,
60 0x8fffcc24, 0x0fffcc04, 0x0cffcc04, 0x00ffcc04,
61 0x00ffcc08, 0x0cffcc44, 0x00ffec0c, 0x03ffec00,
62 0x00ffec44, 0x00ffcc08, 0x0cffcc44, 0x00ffec04,
63 0x00ffec00, 0x3fffec47, _NOT_USED_, _NOT_USED_,
64 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x11bfcc47,
65 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
66 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x03afcc4c,
67 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
68 0x0cafcc00, 0x33bfcc4f, _NOT_USED_, _NOT_USED_,
69 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
70 0xe0ffcc84, 0x00ffcc04, 0x00ffcc04, 0x0fffcc04,
71 0x7fffcc06, 0xffffcc85, 0xffffcc05, _NOT_USED_,
72 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
73 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
75 static const uint edo_60ns[] =
76 { 0x8ffbec24, 0x0ff3ec04, 0x0cf3ec04, 0x00f3ec04,
77 0x00f3ec00, 0x37f7ec47, _NOT_USED_, _NOT_USED_,
78 0x8fffec24, 0x0ffbec04, 0x0cf3ec04, 0x00f3ec0c,
79 0x0cf3ec00, 0x00f3ec4c, 0x0cf3ec00, 0x00f3ec4c,
80 0x0cf3ec00, 0x00f3ec44, 0x03f3ec00, 0x3ff7ec47,
81 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
82 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x11bfcc47,
83 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
84 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x03afcc4c,
85 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
86 0x0cafcc00, 0x33bfcc4f, _NOT_USED_, _NOT_USED_,
87 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
88 0xc0ffcc84, 0x00ffcc04, 0x07ffcc04, 0x3fffcc06,
89 0xffffcc85, 0xffffcc05, _NOT_USED_, _NOT_USED_,
90 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
91 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
93 static const uint edo_70ns[] =
94 { 0x8ffbcc24, 0x0ff3cc04, 0x0cf3cc04, 0x00f3cc04,
95 0x00f3cc00, 0x37f7cc47, _NOT_USED_, _NOT_USED_,
96 0x8fffcc24, 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc0c,
97 0x03f3cc00, 0x00f3cc44, 0x00f3ec0c, 0x0cf3ec00,
98 0x00f3ec4c, 0x03f3ec00, 0x00f3ec44, 0x00f3cc00,
99 0x33f7cc47, _NOT_USED_, _NOT_USED_, _NOT_USED_,
100 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x11bfcc47,
101 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
102 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x03afcc4c,
103 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
104 0x0cafcc00, 0x33bfcc47, _NOT_USED_, _NOT_USED_,
105 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
106 0xe0ffcc84, 0x00ffcc04, 0x00ffcc04, 0x0fffcc04,
107 0x7fffcc04, 0xffffcc86, 0xffffcc05, _NOT_USED_,
108 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
109 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
111 #elif defined(CONFIG_DRAM_25MHZ)
115 static const uint dram_60ns[] =
116 { 0x0fffcc04, 0x08ffcc00, 0x33ffcc47, _NOT_USED_,
117 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
118 0x0fffcc24, 0x0fffcc04, 0x08ffcc00, 0x03ffcc4c,
119 0x08ffcc00, 0x03ffcc4c, 0x08ffcc00, 0x03ffcc4c,
120 0x08ffcc00, 0x33ffcc47, _NOT_USED_, _NOT_USED_,
121 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
122 0x0fafcc04, 0x08afcc00, 0x3fbfcc47, _NOT_USED_,
123 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
124 0x0fafcc04, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
125 0x01afcc4c, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
126 0x31bfcc43, _NOT_USED_, _NOT_USED_, _NOT_USED_,
127 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
128 0x80ffcc84, 0x13ffcc04, 0xffffcc87, 0xffffcc05,
129 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
130 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
131 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
133 static const uint dram_70ns[] =
134 { 0x0fffec04, 0x08ffec04, 0x00ffec00, 0x3fffcc47,
135 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
136 0x0fffcc24, 0x0fffcc04, 0x08ffcc00, 0x03ffcc4c,
137 0x08ffcc00, 0x03ffcc4c, 0x08ffcc00, 0x03ffcc4c,
138 0x08ffcc00, 0x33ffcc47, _NOT_USED_, _NOT_USED_,
139 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
140 0x0fafcc04, 0x08afcc00, 0x3fbfcc47, _NOT_USED_,
141 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
142 0x0fafcc04, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
143 0x01afcc4c, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
144 0x31bfcc43, _NOT_USED_, _NOT_USED_, _NOT_USED_,
145 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
146 0xc0ffcc84, 0x01ffcc04, 0x7fffcc86, 0xffffcc05,
147 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
148 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
149 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
151 static const uint edo_60ns[] =
152 { 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc00, 0x33f7cc47,
153 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
154 0x0ffbcc04, 0x09f3cc0c, 0x09f3cc0c, 0x09f3cc0c,
155 0x08f3cc00, 0x3ff7cc47, _NOT_USED_, _NOT_USED_,
156 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
157 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
158 0x0fefcc04, 0x08afcc04, 0x00afcc00, 0x3fbfcc47,
159 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
160 0x0fefcc04, 0x08afcc00, 0x07afcc48, 0x08afcc48,
161 0x08afcc48, 0x39bfcc47, _NOT_USED_, _NOT_USED_,
162 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
163 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
164 0x80ffcc84, 0x13ffcc04, 0xffffcc87, 0xffffcc05,
165 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
166 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
167 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
169 static const uint edo_70ns[] =
170 { 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc00, 0x33f7cc47,
171 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
172 0x0ffbec04, 0x08f3ec04, 0x03f3ec48, 0x08f3cc00,
173 0x0ff3cc4c, 0x08f3cc00, 0x0ff3cc4c, 0x08f3cc00,
174 0x3ff7cc47, _NOT_USED_, _NOT_USED_, _NOT_USED_,
175 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
176 0x0fefcc04, 0x08afcc04, 0x00afcc00, 0x3fbfcc47,
177 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
178 0x0fefcc04, 0x08afcc00, 0x07afcc4c, 0x08afcc00,
179 0x07afcc4c, 0x08afcc00, 0x07afcc4c, 0x08afcc00,
180 0x37bfcc47, _NOT_USED_, _NOT_USED_, _NOT_USED_,
181 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
182 0xc0ffcc84, 0x01ffcc04, 0x7fffcc86, 0xffffcc05,
183 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
184 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
185 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
187 #error dram not correctly defined - use CONFIG_DRAM_25MHZ or CONFIG_DRAM_50MHZ
190 /* ------------------------------------------------------------------------- */
191 static int _draminit (uint base, uint noMbytes, uint edo, uint delay)
193 volatile immap_t *immap = (immap_t *) CFG_IMMR;
194 volatile memctl8xx_t *memctl = &immap->im_memctl;
201 upmconfig (UPMA, (uint *) edo_70ns,
202 sizeof (edo_70ns) / sizeof (uint));
204 upmconfig (UPMA, (uint *) dram_70ns,
205 sizeof (dram_70ns) / sizeof (uint));
212 upmconfig (UPMA, (uint *) edo_60ns,
213 sizeof (edo_60ns) / sizeof (uint));
215 upmconfig (UPMA, (uint *) dram_60ns,
216 sizeof (dram_60ns) / sizeof (uint));
225 memctl->memc_mptpr = 0x0400; /* divide by 16 */
228 case 4: /* 4 Mbyte uses only CS2 */
230 memctl->memc_mamr = 0xc0a21114;
232 memctl->memc_mamr = 0x13a01114; /* PTA 0x13 AMA 010 */
234 memctl->memc_or2 = 0xffc00800; /* 4M */
237 case 8: /* 8 Mbyte uses both CS3 and CS2 */
238 memctl->memc_mamr = 0x13a01114; /* PTA 0x13 AMA 010 */
239 memctl->memc_or3 = 0xffc00800; /* 4M */
240 memctl->memc_br3 = 0x00400081 + base;
241 memctl->memc_or2 = 0xffc00800; /* 4M */
244 case 16: /* 16 Mbyte uses only CS2 */
245 #ifdef CONFIG_ADS /* XXX: why PTA=0x60 only in 16M case? - NTL */
246 memctl->memc_mamr = 0x60b21114; /* PTA 0x60 AMA 011 */
248 memctl->memc_mamr = 0x13b01114; /* PTA 0x13 AMA 011 */
250 memctl->memc_or2 = 0xff000800; /* 16M */
253 case 32: /* 32 Mbyte uses both CS3 and CS2 */
254 memctl->memc_mamr = 0x13b01114; /* PTA 0x13 AMA 011 */
255 memctl->memc_or3 = 0xff000800; /* 16M */
256 memctl->memc_br3 = 0x01000081 + base;
257 memctl->memc_or2 = 0xff000800; /* 16M */
264 memctl->memc_br2 = 0x81 + base; /* use upma */
266 *((uint *) BCSR1) &= ~BCSR1_DRAM_EN; /* enable dram */
268 /* if no dimm is inserted, noMbytes is still detected as 8m, so
269 * sanity check top and bottom of memory */
271 /* check bytes / 2 because get_ram_size tests at base+bytes, which
274 if (get_ram_size ((long *) base, noMbytes << 19) != noMbytes << 19) {
275 *((uint *) BCSR1) |= BCSR1_DRAM_EN; /* disable dram */
282 /* ------------------------------------------------------------------------- */
284 static void _dramdisable(void)
286 volatile immap_t *immap = (immap_t *)CFG_IMMR;
287 volatile memctl8xx_t *memctl = &immap->im_memctl;
289 memctl->memc_br2 = 0x00000000;
290 memctl->memc_br3 = 0x00000000;
292 /* maybe we should turn off upma here or something */
294 #endif /* !CONFIG_MPC885ADS */
296 /* ========================================================================= */
298 #ifdef CONFIG_FADS /* SDRAM exists on FADS and newer boards */
300 #if defined(CONFIG_SDRAM_100MHZ)
302 /* ------------------------------------------------------------------------- */
303 /* sdram table by Dan Malek */
305 /* This has the stretched early timing so the 50 MHz
306 * processor can make the 100 MHz timing. This will
307 * work at all processor speeds.
310 #ifdef SDRAM_ALT_INIT_SEQENCE
311 # define SDRAM_MBMRVALUE0 0xc3802114 /* PTx=195,PTxE,AMx=0,DSx=1,A11,RLFx=1,WLFx=1,TLFx=4 */
312 #define SDRAM_MBMRVALUE1 SDRAM_MBMRVALUE0
313 # define SDRAM_MCRVALUE0 0x80808111 /* run upmb cs4 loop 1 addr 0x11 MRS */
314 # define SDRAM_MCRVALUE1 SDRAM_MCRVALUE0 /* ??? why not 0x80808130? */
316 # define SDRAM_MxMR_PTx 195
317 # define UPM_MRS_ADDR 0x11
318 # define UPM_REFRESH_ADDR 0x30 /* or 0x11 if we want to be like above? */
319 #endif /* !SDRAM_ALT_INIT_SEQUENCE */
321 static const uint sdram_table[] =
323 /* single read. (offset 0 in upm RAM) */
324 0xefebfc24, 0x1f07fc24, 0xeeaefc04, 0x11adfc04,
325 0xefbbbc00, 0x1ff77c45, _NOT_USED_, _NOT_USED_,
327 /* burst read. (offset 8 in upm RAM) */
328 0xefebfc24, 0x1f07fc24, 0xeeaefc04, 0x10adfc04,
329 0xf0affc00, 0xf0affc00, 0xf1affc00, 0xefbbbc00,
332 /* precharge + MRS. (offset 11 in upm RAM) */
333 0xeffbbc04, 0x1ff77c34, 0xefeabc34,
334 0x1fb57c35, _NOT_USED_, _NOT_USED_, _NOT_USED_,
336 /* single write. (offset 18 in upm RAM) */
337 0xefebfc24, 0x1f07fc24, 0xeeaebc00, 0x01b93c04,
338 0x1ff77c45, _NOT_USED_, _NOT_USED_, _NOT_USED_,
340 /* burst write. (offset 20 in upm RAM) */
341 0xefebfc24, 0x1f07fc24, 0xeeaebc00, 0x10ad7c00,
342 0xf0affc00, 0xf0affc00, 0xe1bbbc04, 0x1ff77c45,
343 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
344 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
346 /* refresh. (offset 30 in upm RAM) */
347 0xeffafc84, 0x1ff5fc04, 0xfffffc04, 0xfffffc04,
348 0xfffffc84, 0xfffffc07, _NOT_USED_, _NOT_USED_,
349 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
351 /* exception. (offset 3c in upm RAM) */
352 0xeffffc06, 0x1ffffc07, _NOT_USED_, _NOT_USED_ };
354 #elif defined(CONFIG_SDRAM_50MHZ)
356 /* ------------------------------------------------------------------------- */
357 /* sdram table stolen from the fads manual */
358 /* for chip MB811171622A-100 */
360 /* this table is for 32-50MHz operation */
361 #ifdef SDRAM_ALT_INIT_SEQENCE
362 # define SDRAM_MBMRVALUE0 0x80802114 /* PTx=128,PTxE,AMx=0,DSx=1,A11,RLFx=1,WLFx=1,TLFx=4 */
363 # define SDRAM_MBMRVALUE1 0x80802118 /* PTx=128,PTxE,AMx=0,DSx=1,A11,RLFx=1,WLFx=1,TLFx=8 */
364 # define SDRAM_MCRVALUE0 0x80808105 /* run upmb cs4 loop 1 addr 0x5 MRS */
365 # define SDRAM_MCRVALUE1 0x80808130 /* run upmb cs4 loop 1 addr 0x30 REFRESH */
366 # define SDRAM_MPTRVALUE 0x400
367 #define SDRAM_MARVALUE 0x88
369 # define SDRAM_MxMR_PTx 128
370 # define UPM_MRS_ADDR 0x5
371 # define UPM_REFRESH_ADDR 0x30
372 #endif /* !SDRAM_ALT_INIT_SEQUENCE */
374 static const uint sdram_table[] =
376 /* single read. (offset 0 in upm RAM) */
377 0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00,
380 /* precharge + MRS. (offset 5 in upm RAM) */
381 0x1ff77c34, 0xefeabc34, 0x1fb57c35,
383 /* burst read. (offset 8 in upm RAM) */
384 0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00,
385 0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47,
386 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
387 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
389 /* single write. (offset 18 in upm RAM) */
390 0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47,
391 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
393 /* burst write. (offset 20 in upm RAM) */
394 0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
395 0xf0affc00, 0xe1bbbc04, 0x1ff77c47, _NOT_USED_,
396 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
397 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
399 /* refresh. (offset 30 in upm RAM) */
400 0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
401 0xfffffc84, 0xfffffc07, _NOT_USED_, _NOT_USED_,
402 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
404 /* exception. (offset 3c in upm RAM) */
405 0x7ffffc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ };
407 /* ------------------------------------------------------------------------- */
409 #error SDRAM not correctly configured
411 /* ------------------------------------------------------------------------- */
414 * Memory Periodic Timer Prescaler
417 #define SDRAM_OR4VALUE 0x00000a00 /* SAM,GL5A/S=01,addr mask or'ed on later */
418 #define SDRAM_BR4VALUE 0x000000c1 /* UPMB,base addr or'ed on later */
420 /* ------------------------------------------------------------------------- */
421 #ifdef SDRAM_ALT_INIT_SEQENCE
422 /* ------------------------------------------------------------------------- */
424 static int _initsdram(uint base, uint noMbytes)
426 volatile immap_t *immap = (immap_t *)CFG_IMMR;
427 volatile memctl8xx_t *memctl = &immap->im_memctl;
429 upmconfig(UPMB, (uint *)sdram_table,sizeof(sdram_table)/sizeof(uint));
431 memctl->memc_mptpr = SDRAM_MPTPRVALUE;
433 /* Configure the refresh (mostly). This needs to be
434 * based upon processor clock speed and optimized to provide
435 * the highest level of performance. For multiple banks,
436 * this time has to be divided by the number of banks.
437 * Although it is not clear anywhere, it appears the
438 * refresh steps through the chip selects for this UPM
439 * on each refresh cycle.
440 * We have to be careful changing
441 * UPM registers after we ask it to run these commands.
444 memctl->memc_mbmr = SDRAM_MBMRVALUE0; /* TLF 4 */
445 memctl->memc_mar = SDRAM_MARVALUE; /* MRS code */
449 /* Now run the precharge/nop/mrs commands.
452 memctl->memc_mcr = 0x80808111; /* run umpb cs4 1 count 1, addr 0x11 ??? (50Mhz) */
453 /* run umpb cs4 1 count 1, addr 0x11 precharge+MRS (100Mhz) */
456 /* Run 8 refresh cycles */
458 memctl->memc_mcr = SDRAM_MCRVALUE0; /* run upmb cs4 loop 1 addr 0x5 precharge+MRS (50 Mhz)*/
459 /* run upmb cs4 loop 1 addr 0x11 precharge+MRS (100MHz) */
463 memctl->memc_mbmr = SDRAM_MBMRVALUE1; /* TLF 4 (100 Mhz) or TLF 8 (50MHz) */
464 memctl->memc_mcr = SDRAM_MCRVALUE1; /* run upmb cs4 loop 1 addr 0x30 refr (50 Mhz) */
465 /* run upmb cs4 loop 1 addr 0x11 precharge+MRS ??? (100MHz) */
469 memctl->memc_mbmr = SDRAM_MBMRVALUE0; /* TLF 4 */
471 memctl->memc_or4 = SDRAM_OR4VALUE | ~((noMbytes<<20)-1);
472 memctl->memc_br4 = SDRAM_BR4VALUE | base;
477 /* ------------------------------------------------------------------------- */
478 #else /* !SDRAM_ALT_INIT_SEQUENCE */
479 /* ------------------------------------------------------------------------- */
481 /* refresh rate 15.6 us (= 64 ms / 4K = 62.4 / quad bursts) for <= 128 MBit */
482 # define MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */
483 # define MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */
485 /* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit */
486 # define MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */
487 # define MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */
490 * MxMR settings for SDRAM
494 # define SDRAM_MxMR_8COL ((SDRAM_MxMR_PTx << MBMR_PTB_SHIFT) | MBMR_PTBE | \
495 MBMR_AMB_TYPE_0 | MBMR_DSB_1_CYCL | MBMR_G0CLB_A11 | \
496 MBMR_RLFB_1X | MBMR_WLFB_1X | MBMR_TLFB_4X)
498 # define SDRAM_MxMR_9COL ((SDRAM_MxMR_PTx << MBMR_PTB_SHIFT) | MBMR_PTAE | \
499 MBMR_AMB_TYPE_1 | MBMR_DSB_1_CYCL | MBMR_G0CLB_A10 | \
500 MBMR_RLFB_1X | MBMR_WLFB_1X | MBMR_TLFB_4X)
502 static int _initsdram(uint base, uint noMbytes)
504 volatile immap_t *immap = (immap_t *)CFG_IMMR;
505 volatile memctl8xx_t *memctl = &immap->im_memctl;
507 upmconfig(UPMB, (uint *)sdram_table,sizeof(sdram_table)/sizeof(uint));
509 memctl->memc_mptpr = MPTPR_2BK_4K;
510 memctl->memc_mbmr = SDRAM_MxMR_8COL & (~(MBMR_PTBE)); /* no refresh yet */
513 memctl->memc_or4 = SDRAM_OR4VALUE | ~((noMbytes<<20)-1);
514 memctl->memc_br4 = SDRAM_BR4VALUE | base;
516 /* Perform SDRAM initilization */
517 # ifdef UPM_NOP_ADDR /* not currently in UPM table */
519 memctl->memc_mar = 0x00000000;
520 memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 |
521 MCR_MLCF(0) | UPM_NOP_ADDR;
527 # ifdef UPM_PRECHARGE_ADDR /* merged with MRS in UPM table */
528 /* step 3: precharge */
529 memctl->memc_mar = 0x00000000;
530 memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 |
531 MCR_MLCF(4) | UPM_PRECHARGE_ADDR;
534 /* step 4: refresh */
535 memctl->memc_mar = 0x00000000;
536 memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 |
537 MCR_MLCF(2) | UPM_REFRESH_ADDR;
540 * note: for some reason, the UPM values we are using include
545 memctl->memc_mar = 0x00000088;
546 memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 |
547 MCR_MLCF(1) | UPM_MRS_ADDR;
550 memctl->memc_mar = 0x00000000;
551 memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 |
552 MCR_MLCF(0) | UPM_NOP_ADDR;
558 memctl->memc_mbmr |= MBMR_PTBE;
561 #endif /* !SDRAM_ALT_INIT_SEQUENCE */
563 /* ------------------------------------------------------------------------- */
565 static void _sdramdisable(void)
567 volatile immap_t *immap = (immap_t *)CFG_IMMR;
568 volatile memctl8xx_t *memctl = &immap->im_memctl;
570 memctl->memc_br4 = 0x00000000;
572 /* maybe we should turn off upmb here or something */
575 /* ------------------------------------------------------------------------- */
577 static int initsdram(uint base, uint *noMbytes)
579 uint m = CFG_SDRAM_SIZE>>20;
581 /* _initsdram needs access to sdram */
582 *((uint *)BCSR1) |= BCSR1_SDRAM_EN; /* enable sdram */
584 if(!_initsdram(base, m))
591 *((uint *)BCSR1) &= ~BCSR1_SDRAM_EN; /* disable sdram */
599 #endif /* CONFIG_FADS */
601 /* ========================================================================= */
603 long int initdram (int board_type)
605 uint sdramsz = 0; /* size of sdram in Mbytes */
606 uint base = 0; /* base of dram in bytes */
607 uint m = 0; /* size of dram in Mbytes */
608 #ifndef CONFIG_MPC885ADS
613 if (!initsdram (0x00000000, &sdramsz)) {
614 base = sdramsz << 20;
615 printf ("(%u MB SDRAM) ", sdramsz);
618 #ifndef CONFIG_MPC885ADS /* No old DRAM on MPC885ADS */
619 k = (*((uint *) BCSR2) >> 23) & 0x0f;
622 /* "MCM36100 / MT8D132X" */
627 /* "MCM36800 / MT16D832X" */
631 /* "MCM36400 / MT8D432X" */
635 /* "MCM36200 / MT16D832X ?" */
652 printf ("unknown dramdelay (0x%x) - defaulting to 70 ns", k);
657 /* the FADS is missing this bit, all rams treated as non-edo */
660 s = (*((uint *) BCSR2) >> 27) & 0x01;
663 if (!_draminit (base, m, s, k)) {
664 printf ("%dM %dns %sDRAM: ", m, k, s ? "EDO " : "");
669 #endif /* !CONFIG_MPC885ADS */
670 m += sdramsz; /* add sdram size to total */
675 /* ------------------------------------------------------------------------- */
679 /* TODO: XXX XXX XXX */
680 printf ("test: 16 MB - ok\n");
685 /* ========================================================================= */
688 * Check Board Identity:
691 #if defined(CONFIG_FADS) && defined(CFG_DAUGHTERBOARD)
692 static void checkdboard(void)
694 /* get db type from BCSR 3 */
695 uint k = (*((uint *)BCSR3) >> 24) & 0x3f;
710 puts ("MPC821, MPC860 / MPC860SAR / MPC860T");
722 default : printf("0x%x", k);
725 #endif /* defined(CONFIG_FADS) && defined(CFG_DAUGHTERBOARD) */
727 int checkboard (void)
729 /* get revision from BCSR 3 */
730 uint r = (((*((uint *) BCSR3) >> 23) & 1) << 3)
731 | (((*((uint *) BCSR3) >> 19) & 1) << 2)
732 | (((*((uint *) BCSR3) >> 16) & 3));
736 #if defined(CONFIG_MPC86xADS)
738 #elif defined(CONFIG_MPC885ADS)
740 r = 0; /* I've got NR (No Revision) board */
741 #elif defined(CONFIG_FADS)
750 #if defined(CONFIG_ADS)
752 puts ("ENG - this board sucks, check the errata, not supported\n");
755 puts ("PILOT - warning, read errata \n");
758 puts ("A - warning, read errata \n");
763 #elif defined(CONFIG_MPC885ADS)
767 #else /* FADS and newer */
774 #endif /* CONFIG_ADS */
776 printf ("unknown (0x%x)\n", r);
783 /* ========================================================================= */
785 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
787 #ifdef CFG_PCMCIA_MEM_ADDR
788 volatile unsigned char *pcmcia_mem = (unsigned char*)CFG_PCMCIA_MEM_ADDR;
791 int pcmcia_init(void)
793 volatile pcmconf8xx_t *pcmp;
794 uint v, slota = 0, slotb = 0;
797 ** Enable the PCMCIA for a Flash card.
799 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
802 pcmp->pcmc_pbr0 = CFG_PCMCIA_MEM_ADDR;
803 pcmp->pcmc_por0 = 0xc00ff05d;
806 /* Set all slots to zero by default. */
807 pcmp->pcmc_pgcra = 0;
808 pcmp->pcmc_pgcrb = 0;
809 #ifdef CONFIG_PCMCIA_SLOT_A
810 pcmp->pcmc_pgcra = 0x40;
812 #ifdef CONFIG_PCMCIA_SLOT_B
813 pcmp->pcmc_pgcrb = 0x40;
816 /* enable PCMCIA buffers */
817 *((uint *)BCSR1) &= ~BCSR1_PCCEN;
819 /* Check if any PCMCIA card is plugged in. */
821 #ifdef CONFIG_PCMCIA_SLOT_A
822 slota = (pcmp->pcmc_pipr & 0x18000000) == 0 ;
824 #ifdef CONFIG_PCMCIA_SLOT_B
825 slotb = (pcmp->pcmc_pipr & 0x00001800) == 0 ;
828 if (!(slota || slotb)) {
829 printf("No card present\n");
830 pcmp->pcmc_pgcra = 0;
831 pcmp->pcmc_pgcrb = 0;
835 printf("Card present (");
839 /* both the ADS and the FADS have a 5V keyed pcmcia connector (?)
841 ** Paolo - Yes, but i have to insert some 3.3V card in that slot on
845 #if defined(CONFIG_MPC86x)
846 switch ((pcmp->pcmc_pipr >> 30) & 3)
847 #elif defined(CONFIG_MPC823) || defined(CONFIG_MPC850)
848 switch ((pcmp->pcmc_pipr >> 14) & 3)
858 v = 3; /* User lower voltage if supported! */
864 printf("5V, 3V and x.xV");
866 v = 3; /* User lower voltage if supported! */
876 printf("; using 3V");
878 ** Enable 3 volt Vcc.
880 *((uint *)BCSR1) &= ~BCSR1_PCCVCC1;
881 *((uint *)BCSR1) |= BCSR1_PCCVCC0;
885 printf("; using 5V");
888 ** Enable 5 volt Vcc.
890 *((uint *)BCSR1) &= ~BCSR1_PCCVCCON;
894 ** Enable 5 volt Vcc.
896 *((uint *)BCSR1) &= ~BCSR1_PCCVCC0;
897 *((uint *)BCSR1) |= BCSR1_PCCVCC1;
902 *((uint *)BCSR1) |= BCSR1_PCCEN; /* disable pcmcia */
904 printf("; unknown voltage");
908 /* disable pcmcia reset after a while */
912 #ifdef CONFIG_PCMCIA_SLOT_A
913 pcmp->pcmc_pgcra = 0;
915 #ifdef CONFIG_PCMCIA_SLOT_B
916 pcmp->pcmc_pgcrb = 0;
919 /* If you using a real hd you should give a short
921 #ifdef CONFIG_DISK_SPINUP_TIME
922 udelay(CONFIG_DISK_SPINUP_TIME);
928 #endif /* CFG_CMD_PCMCIA */
930 /* ========================================================================= */
932 #ifdef CFG_PC_IDE_RESET
934 void ide_set_reset(int on)
936 volatile immap_t *immr = (immap_t *)CFG_IMMR;
939 * Configure PC for IDE Reset Pin
941 if (on) { /* assert RESET */
942 immr->im_ioport.iop_pcdat &= ~(CFG_PC_IDE_RESET);
943 } else { /* release RESET */
944 immr->im_ioport.iop_pcdat |= CFG_PC_IDE_RESET;
947 /* program port pin as GPIO output */
948 immr->im_ioport.iop_pcpar &= ~(CFG_PC_IDE_RESET);
949 immr->im_ioport.iop_pcso &= ~(CFG_PC_IDE_RESET);
950 immr->im_ioport.iop_pcdir |= CFG_PC_IDE_RESET;
953 #endif /* CFG_PC_IDE_RESET */