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  • Committer: Phil Dennis-Jordan
  • Date: 2017-07-21 08:03:43 UTC
  • mfrom: (1.1.1)
  • Revision ID: phil@philjordan.eu-20170721080343-2yr2vdj7713czahv
New upstream release 2.9.0.

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roms/u-boot/board/netphone/flash.c
 
1
/*
 
2
 * (C) Copyright 2000-2004
 
3
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 
4
 *
 
5
 * SPDX-License-Identifier:     GPL-2.0+
 
6
 */
 
7
 
 
8
#include <common.h>
 
9
#include <mpc8xx.h>
 
10
 
 
11
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips    */
 
12
 
 
13
/*-----------------------------------------------------------------------
 
14
 * Functions
 
15
 */
 
16
static ulong flash_get_size(vu_long * addr, flash_info_t * info);
 
17
static int write_byte(flash_info_t * info, ulong dest, uchar data);
 
18
static void flash_get_offsets(ulong base, flash_info_t * info);
 
19
 
 
20
/*-----------------------------------------------------------------------
 
21
 */
 
22
 
 
23
unsigned long flash_init(void)
 
24
{
 
25
        volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
 
26
        volatile memctl8xx_t *memctl = &immap->im_memctl;
 
27
        unsigned long size;
 
28
#if CONFIG_NETPHONE_VERSION == 2
 
29
        unsigned long size1;
 
30
#endif
 
31
        int i;
 
32
 
 
33
        /* Init: no FLASHes known */
 
34
        for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i)
 
35
                flash_info[i].flash_id = FLASH_UNKNOWN;
 
36
 
 
37
        size = flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]);
 
38
 
 
39
        if (flash_info[0].flash_id == FLASH_UNKNOWN) {
 
40
                printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
 
41
                        size, size << 20);
 
42
        }
 
43
 
 
44
        /* Remap FLASH according to real size */
 
45
        memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size & 0xFFFF8000);
 
46
        memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | (memctl->memc_br0 & ~(BR_BA_MSK));
 
47
 
 
48
        /* Re-do sizing to get full correct info */
 
49
        size = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE, &flash_info[0]);
 
50
 
 
51
        flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]);
 
52
 
 
53
        /* monitor protection ON by default */
 
54
        flash_protect(FLAG_PROTECT_SET,
 
55
                        CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
 
56
                        &flash_info[0]);
 
57
 
 
58
        flash_protect ( FLAG_PROTECT_SET,
 
59
                        CONFIG_ENV_ADDR,
 
60
                        CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
 
61
                        &flash_info[0]);
 
62
 
 
63
#ifdef CONFIG_ENV_ADDR_REDUND
 
64
        flash_protect ( FLAG_PROTECT_SET,
 
65
                        CONFIG_ENV_ADDR_REDUND,
 
66
                        CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
 
67
                        &flash_info[0]);
 
68
#endif
 
69
 
 
70
        flash_info[0].size = size;
 
71
 
 
72
#if CONFIG_NETPHONE_VERSION == 2
 
73
        size1 = flash_get_size((vu_long *) FLASH_BASE4_PRELIM, &flash_info[1]);
 
74
        if (size1 > 0) {
 
75
                if (flash_info[1].flash_id == FLASH_UNKNOWN)
 
76
                        printf("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n", size1, size1 << 20);
 
77
 
 
78
                /* Remap FLASH according to real size */
 
79
                memctl->memc_or4 = CONFIG_SYS_OR_TIMING_FLASH | (-size1 & 0xFFFF8000);
 
80
                memctl->memc_br4 = (CONFIG_SYS_FLASH_BASE4 & BR_BA_MSK) | (memctl->memc_br4 & ~(BR_BA_MSK));
 
81
 
 
82
                /* Re-do sizing to get full correct info */
 
83
                size1 = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE4, &flash_info[1]);
 
84
 
 
85
                flash_get_offsets(CONFIG_SYS_FLASH_BASE4, &flash_info[1]);
 
86
 
 
87
                size += size1;
 
88
        } else
 
89
                memctl->memc_br4 &= ~BR_V;
 
90
#endif
 
91
 
 
92
        return (size);
 
93
}
 
94
 
 
95
/*-----------------------------------------------------------------------
 
96
 */
 
97
static void flash_get_offsets(ulong base, flash_info_t * info)
 
98
{
 
99
        int i;
 
100
 
 
101
        /* set up sector start address table */
 
102
        if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
 
103
                for (i = 0; i < info->sector_count; i++) {
 
104
                        info->start[i] = base + (i * 0x00010000);
 
105
                }
 
106
        } else if (info->flash_id & FLASH_BTYPE) {
 
107
                /* set sector offsets for bottom boot block type    */
 
108
                info->start[0] = base + 0x00000000;
 
109
                info->start[1] = base + 0x00004000;
 
110
                info->start[2] = base + 0x00006000;
 
111
                info->start[3] = base + 0x00008000;
 
112
                for (i = 4; i < info->sector_count; i++) {
 
113
                        info->start[i] = base + (i * 0x00010000) - 0x00030000;
 
114
                }
 
115
        } else {
 
116
                /* set sector offsets for top boot block type       */
 
117
                i = info->sector_count - 1;
 
118
                info->start[i--] = base + info->size - 0x00004000;
 
119
                info->start[i--] = base + info->size - 0x00006000;
 
120
                info->start[i--] = base + info->size - 0x00008000;
 
121
                for (; i >= 0; i--) {
 
122
                        info->start[i] = base + i * 0x00010000;
 
123
                }
 
124
        }
 
125
}
 
126
 
 
127
/*-----------------------------------------------------------------------
 
128
 */
 
129
void flash_print_info(flash_info_t * info)
 
130
{
 
131
        int i;
 
132
 
 
133
        if (info->flash_id == FLASH_UNKNOWN) {
 
134
                printf("missing or unknown FLASH type\n");
 
135
                return;
 
136
        }
 
137
 
 
138
        switch (info->flash_id & FLASH_VENDMASK) {
 
139
        case FLASH_MAN_AMD:
 
140
                printf("AMD ");
 
141
                break;
 
142
        case FLASH_MAN_FUJ:
 
143
                printf("FUJITSU ");
 
144
                break;
 
145
        case FLASH_MAN_MX:
 
146
                printf("MXIC ");
 
147
                break;
 
148
        default:
 
149
                printf("Unknown Vendor ");
 
150
                break;
 
151
        }
 
152
 
 
153
        switch (info->flash_id & FLASH_TYPEMASK) {
 
154
        case FLASH_AM040:
 
155
                printf("AM29LV040B (4 Mbit, bottom boot sect)\n");
 
156
                break;
 
157
        case FLASH_AM400B:
 
158
                printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
 
159
                break;
 
160
        case FLASH_AM400T:
 
161
                printf("AM29LV400T (4 Mbit, top boot sector)\n");
 
162
                break;
 
163
        case FLASH_AM800B:
 
164
                printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
 
165
                break;
 
166
        case FLASH_AM800T:
 
167
                printf("AM29LV800T (8 Mbit, top boot sector)\n");
 
168
                break;
 
169
        case FLASH_AM160B:
 
170
                printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
 
171
                break;
 
172
        case FLASH_AM160T:
 
173
                printf("AM29LV160T (16 Mbit, top boot sector)\n");
 
174
                break;
 
175
        case FLASH_AM320B:
 
176
                printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
 
177
                break;
 
178
        case FLASH_AM320T:
 
179
                printf("AM29LV320T (32 Mbit, top boot sector)\n");
 
180
                break;
 
181
        default:
 
182
                printf("Unknown Chip Type\n");
 
183
                break;
 
184
        }
 
185
 
 
186
        printf("  Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count);
 
187
 
 
188
        printf("  Sector Start Addresses:");
 
189
        for (i = 0; i < info->sector_count; ++i) {
 
190
                if ((i % 5) == 0)
 
191
                        printf("\n   ");
 
192
                printf(" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : "     ");
 
193
        }
 
194
        printf("\n");
 
195
}
 
196
 
 
197
/*-----------------------------------------------------------------------
 
198
 */
 
199
 
 
200
 
 
201
/*-----------------------------------------------------------------------
 
202
 */
 
203
 
 
204
/*
 
205
 * The following code cannot be run from FLASH!
 
206
 */
 
207
 
 
208
static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 
209
{
 
210
        short i;
 
211
        uchar mid;
 
212
        uchar pid;
 
213
        vu_char *caddr = (vu_char *) addr;
 
214
        ulong base = (ulong) addr;
 
215
 
 
216
        /* Write auto select command: read Manufacturer ID */
 
217
        caddr[0x0555] = 0xAA;
 
218
        caddr[0x02AA] = 0x55;
 
219
        caddr[0x0555] = 0x90;
 
220
 
 
221
        mid = caddr[0];
 
222
        switch (mid) {
 
223
        case (AMD_MANUFACT & 0xFF):
 
224
                info->flash_id = FLASH_MAN_AMD;
 
225
                break;
 
226
        case (FUJ_MANUFACT & 0xFF):
 
227
                info->flash_id = FLASH_MAN_FUJ;
 
228
                break;
 
229
        case (MX_MANUFACT & 0xFF):
 
230
                info->flash_id = FLASH_MAN_MX;
 
231
                break;
 
232
        case (STM_MANUFACT & 0xFF):
 
233
                info->flash_id = FLASH_MAN_STM;
 
234
                break;
 
235
        default:
 
236
                info->flash_id = FLASH_UNKNOWN;
 
237
                info->sector_count = 0;
 
238
                info->size = 0;
 
239
                return (0);                             /* no or unknown flash  */
 
240
        }
 
241
 
 
242
        pid = caddr[1];                         /* device ID        */
 
243
        switch (pid) {
 
244
        case (AMD_ID_LV400T & 0xFF):
 
245
                info->flash_id += FLASH_AM400T;
 
246
                info->sector_count = 11;
 
247
                info->size = 0x00080000;
 
248
                break;                                  /* => 512 kB        */
 
249
 
 
250
        case (AMD_ID_LV400B & 0xFF):
 
251
                info->flash_id += FLASH_AM400B;
 
252
                info->sector_count = 11;
 
253
                info->size = 0x00080000;
 
254
                break;                                  /* => 512 kB        */
 
255
 
 
256
        case (AMD_ID_LV800T & 0xFF):
 
257
                info->flash_id += FLASH_AM800T;
 
258
                info->sector_count = 19;
 
259
                info->size = 0x00100000;
 
260
                break;                                  /* => 1 MB      */
 
261
 
 
262
        case (AMD_ID_LV800B & 0xFF):
 
263
                info->flash_id += FLASH_AM800B;
 
264
                info->sector_count = 19;
 
265
                info->size = 0x00100000;
 
266
                break;                                  /* => 1 MB      */
 
267
 
 
268
        case (AMD_ID_LV160T & 0xFF):
 
269
                info->flash_id += FLASH_AM160T;
 
270
                info->sector_count = 35;
 
271
                info->size = 0x00200000;
 
272
                break;                                  /* => 2 MB      */
 
273
 
 
274
        case (AMD_ID_LV160B & 0xFF):
 
275
                info->flash_id += FLASH_AM160B;
 
276
                info->sector_count = 35;
 
277
                info->size = 0x00200000;
 
278
                break;                                  /* => 2 MB      */
 
279
 
 
280
        case (AMD_ID_LV040B & 0xFF):
 
281
                info->flash_id += FLASH_AM040;
 
282
                info->sector_count = 8;
 
283
                info->size = 0x00080000;
 
284
                break;
 
285
 
 
286
        case (STM_ID_M29W040B & 0xFF):
 
287
                info->flash_id += FLASH_AM040;
 
288
                info->sector_count = 8;
 
289
                info->size = 0x00080000;
 
290
                break;
 
291
 
 
292
#if 0                                                   /* enable when device IDs are available */
 
293
        case (AMD_ID_LV320T & 0xFF):
 
294
                info->flash_id += FLASH_AM320T;
 
295
                info->sector_count = 67;
 
296
                info->size = 0x00400000;
 
297
                break;                                  /* => 4 MB      */
 
298
 
 
299
        case (AMD_ID_LV320B & 0xFF):
 
300
                info->flash_id += FLASH_AM320B;
 
301
                info->sector_count = 67;
 
302
                info->size = 0x00400000;
 
303
                break;                                  /* => 4 MB      */
 
304
#endif
 
305
        default:
 
306
                info->flash_id = FLASH_UNKNOWN;
 
307
                return (0);                             /* => no or unknown flash */
 
308
 
 
309
        }
 
310
 
 
311
        printf(" ");
 
312
        /* set up sector start address table */
 
313
        if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
 
314
                for (i = 0; i < info->sector_count; i++) {
 
315
                        info->start[i] = base + (i * 0x00010000);
 
316
                }
 
317
        } else if (info->flash_id & FLASH_BTYPE) {
 
318
                /* set sector offsets for bottom boot block type    */
 
319
                info->start[0] = base + 0x00000000;
 
320
                info->start[1] = base + 0x00004000;
 
321
                info->start[2] = base + 0x00006000;
 
322
                info->start[3] = base + 0x00008000;
 
323
                for (i = 4; i < info->sector_count; i++) {
 
324
                        info->start[i] = base + (i * 0x00010000) - 0x00030000;
 
325
                }
 
326
        } else {
 
327
                /* set sector offsets for top boot block type       */
 
328
                i = info->sector_count - 1;
 
329
                info->start[i--] = base + info->size - 0x00004000;
 
330
                info->start[i--] = base + info->size - 0x00006000;
 
331
                info->start[i--] = base + info->size - 0x00008000;
 
332
                for (; i >= 0; i--) {
 
333
                        info->start[i] = base + i * 0x00010000;
 
334
                }
 
335
        }
 
336
 
 
337
        /* check for protected sectors */
 
338
        for (i = 0; i < info->sector_count; i++) {
 
339
                /* read sector protection: D0 = 1 if protected */
 
340
                caddr = (volatile unsigned char *)(info->start[i]);
 
341
                info->protect[i] = caddr[2] & 1;
 
342
        }
 
343
 
 
344
        /*
 
345
         * Prevent writes to uninitialized FLASH.
 
346
         */
 
347
        if (info->flash_id != FLASH_UNKNOWN) {
 
348
                caddr = (vu_char *) info->start[0];
 
349
 
 
350
                caddr[0x0555] = 0xAA;
 
351
                caddr[0x02AA] = 0x55;
 
352
                caddr[0x0555] = 0xF0;
 
353
 
 
354
                udelay(20000);
 
355
        }
 
356
 
 
357
        return (info->size);
 
358
}
 
359
 
 
360
 
 
361
/*-----------------------------------------------------------------------
 
362
 */
 
363
 
 
364
int flash_erase(flash_info_t * info, int s_first, int s_last)
 
365
{
 
366
        vu_char *addr = (vu_char *) (info->start[0]);
 
367
        int flag, prot, sect, l_sect;
 
368
        ulong start, now, last;
 
369
 
 
370
        if ((s_first < 0) || (s_first > s_last)) {
 
371
                if (info->flash_id == FLASH_UNKNOWN) {
 
372
                        printf("- missing\n");
 
373
                } else {
 
374
                        printf("- no sectors to erase\n");
 
375
                }
 
376
                return 1;
 
377
        }
 
378
 
 
379
        if ((info->flash_id == FLASH_UNKNOWN) ||
 
380
            (info->flash_id > FLASH_AMD_COMP)) {
 
381
                printf("Can't erase unknown flash type %08lx - aborted\n", info->flash_id);
 
382
                return 1;
 
383
        }
 
384
 
 
385
        prot = 0;
 
386
        for (sect = s_first; sect <= s_last; ++sect) {
 
387
                if (info->protect[sect]) {
 
388
                        prot++;
 
389
                }
 
390
        }
 
391
 
 
392
        if (prot) {
 
393
                printf("- Warning: %d protected sectors will not be erased!\n", prot);
 
394
        } else {
 
395
                printf("\n");
 
396
        }
 
397
 
 
398
        l_sect = -1;
 
399
 
 
400
        /* Disable interrupts which might cause a timeout here */
 
401
        flag = disable_interrupts();
 
402
 
 
403
        addr[0x0555] = 0xAA;
 
404
        addr[0x02AA] = 0x55;
 
405
        addr[0x0555] = 0x80;
 
406
        addr[0x0555] = 0xAA;
 
407
        addr[0x02AA] = 0x55;
 
408
 
 
409
        /* Start erase on unprotected sectors */
 
410
        for (sect = s_first; sect <= s_last; sect++) {
 
411
                if (info->protect[sect] == 0) { /* not protected */
 
412
                        addr = (vu_char *) (info->start[sect]);
 
413
                        addr[0] = 0x30;
 
414
                        l_sect = sect;
 
415
                }
 
416
        }
 
417
 
 
418
        /* re-enable interrupts if necessary */
 
419
        if (flag)
 
420
                enable_interrupts();
 
421
 
 
422
        /* wait at least 80us - let's wait 1 ms */
 
423
        udelay(1000);
 
424
 
 
425
        /*
 
426
         * We wait for the last triggered sector
 
427
         */
 
428
        if (l_sect < 0)
 
429
                goto DONE;
 
430
 
 
431
        start = get_timer(0);
 
432
        last = start;
 
433
        addr = (vu_char *) (info->start[l_sect]);
 
434
        while ((addr[0] & 0x80) != 0x80) {
 
435
                if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 
436
                        printf("Timeout\n");
 
437
                        return 1;
 
438
                }
 
439
                /* show that we're waiting */
 
440
                if ((now - last) > 1000) {      /* every second */
 
441
                        putc('.');
 
442
                        last = now;
 
443
                }
 
444
        }
 
445
 
 
446
DONE:
 
447
        /* reset to read mode */
 
448
        addr = (vu_char *) info->start[0];
 
449
        addr[0] = 0xF0;                         /* reset bank */
 
450
 
 
451
        printf(" done\n");
 
452
        return 0;
 
453
}
 
454
 
 
455
/*-----------------------------------------------------------------------
 
456
 * Copy memory to flash, returns:
 
457
 * 0 - OK
 
458
 * 1 - write timeout
 
459
 * 2 - Flash not erased
 
460
 */
 
461
 
 
462
int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 
463
{
 
464
        int rc;
 
465
 
 
466
        while (cnt > 0) {
 
467
                if ((rc = write_byte(info, addr++, *src++)) != 0) {
 
468
                        return (rc);
 
469
                }
 
470
                --cnt;
 
471
        }
 
472
 
 
473
        return (0);
 
474
}
 
475
 
 
476
/*-----------------------------------------------------------------------
 
477
 * Write a word to Flash, returns:
 
478
 * 0 - OK
 
479
 * 1 - write timeout
 
480
 * 2 - Flash not erased
 
481
 */
 
482
static int write_byte(flash_info_t * info, ulong dest, uchar data)
 
483
{
 
484
        vu_char *addr = (vu_char *) (info->start[0]);
 
485
        ulong start;
 
486
        int flag;
 
487
 
 
488
        /* Check if Flash is (sufficiently) erased */
 
489
        if ((*((vu_char *) dest) & data) != data) {
 
490
                return (2);
 
491
        }
 
492
        /* Disable interrupts which might cause a timeout here */
 
493
        flag = disable_interrupts();
 
494
 
 
495
        addr[0x0555] = 0xAA;
 
496
        addr[0x02AA] = 0x55;
 
497
        addr[0x0555] = 0xA0;
 
498
 
 
499
        *((vu_char *) dest) = data;
 
500
 
 
501
        /* re-enable interrupts if necessary */
 
502
        if (flag)
 
503
                enable_interrupts();
 
504
 
 
505
        /* data polling for D7 */
 
506
        start = get_timer(0);
 
507
        while ((*((vu_char *) dest) & 0x80) != (data & 0x80)) {
 
508
                if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
 
509
                        return (1);
 
510
                }
 
511
        }
 
512
        return (0);
 
513
}