LXR uboot/board/amcc/yucca/flash.c

   1/*
   2 * (C) Copyright 2006
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
   6 * Add support for Am29F016D and dynamic switch setting.
   7 *
   8 * SPDX-License-Identifier:     GPL-2.0+
   9 */
  10
  11/*
  12 * Modified 4/5/2001
  13 * Wait for completion of each sector erase command issued
  14 * 4/5/2001
  15 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
  16 */
  17
  18#include <common.h>
  19#include <asm/ppc4xx.h>
  20#include <asm/processor.h>
  21#include <asm/ppc440.h>
  22#include "yucca.h"
  23
  24#ifdef DEBUG
  25#define DEBUGF(x...) printf(x)
  26#else
  27#define DEBUGF(x...)
  28#endif                          /* DEBUG */
  29
  30flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips */
  31
  32/*
  33 * Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
  34 */
  35static unsigned long flash_addr_table[][CONFIG_SYS_MAX_FLASH_BANKS] = {
  36        {0xfff00000, 0xfff80000, 0xe7c00001}, /* 0:boot from small flash */
  37        {0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66      */
  38        {0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash  */
  39        {0xe7F00000, 0xe7F80000, 0xFFC00001}, /* 3:boot from big flash 33*/
  40        {0xe7F00000, 0xe7F80000, 0xFFC00001}, /* 4:boot from big flash 66*/
  41        {0x00000000, 0x00000000, 0x00000000}, /* 5:boot from             */
  42        {0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66      */
  43        {0x00000000, 0x00000000, 0x00000000}, /* 7:boot from             */
  44        {0xfff00000, 0xfff80000, 0xe7c00001}, /* 8:boot from small flash */
  45};
  46
  47/*
  48 * include common flash code (for amcc boards)
  49 */
  50/*-----------------------------------------------------------------------
  51 * Functions
  52 */
  53static int write_word(flash_info_t * info, ulong dest, ulong data);
  54#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
  55static int write_word_1(flash_info_t * info, ulong dest, ulong data);
  56static int write_word_2(flash_info_t * info, ulong dest, ulong data);
  57static int flash_erase_1(flash_info_t * info, int s_first, int s_last);
  58static int flash_erase_2(flash_info_t * info, int s_first, int s_last);
  59static ulong flash_get_size_1(vu_long * addr, flash_info_t * info);
  60static ulong flash_get_size_2(vu_long * addr, flash_info_t * info);
  61#endif
  62
  63void flash_print_info(flash_info_t * info)
  64{
  65        int i;
  66        int k;
  67        int size;
  68        int erased;
  69        volatile unsigned long *flash;
  70
  71        if (info->flash_id == FLASH_UNKNOWN) {
  72                printf("missing or unknown FLASH type\n");
  73                return;
  74        }
  75
  76        switch (info->flash_id & FLASH_VENDMASK) {
  77                case FLASH_MAN_AMD:
  78                        printf("AMD ");
  79                        break;
  80                case FLASH_MAN_STM:
  81                        printf("STM ");
  82                        break;
  83                case FLASH_MAN_FUJ:
  84                        printf("FUJITSU ");
  85                        break;
  86                case FLASH_MAN_SST:
  87                        printf("SST ");
  88                        break;
  89                case FLASH_MAN_MX:
  90                        printf("MIXC ");
  91                        break;
  92                default:
  93                        printf("Unknown Vendor ");
  94                        break;
  95        }
  96
  97        switch (info->flash_id & FLASH_TYPEMASK) {
  98                case FLASH_AM040:
  99                        printf("AM29F040 (512 Kbit, uniform sector size)\n");
 100                        break;
 101                case FLASH_AM400B:
 102                        printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
 103                        break;
 104                case FLASH_AM400T:
 105                        printf("AM29LV400T (4 Mbit, top boot sector)\n");
 106                        break;
 107                case FLASH_AM800B:
 108                        printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
 109                        break;
 110                case FLASH_AM800T:
 111                        printf("AM29LV800T (8 Mbit, top boot sector)\n");
 112                        break;
 113                case FLASH_AMD016:
 114                        printf("AM29F016D (16 Mbit, uniform sector size)\n");
 115                        break;
 116                case FLASH_AM160B:
 117                        printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
 118                        break;
 119                case FLASH_AM160T:
 120                        printf("AM29LV160T (16 Mbit, top boot sector)\n");
 121                        break;
 122                case FLASH_AM320B:
 123                        printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
 124                        break;
 125                case FLASH_AM320T:
 126                        printf("AM29LV320T (32 Mbit, top boot sector)\n");
 127                        break;
 128                case FLASH_AM033C:
 129                        printf("AM29LV033C (32 Mbit, top boot sector)\n");
 130                        break;
 131                case FLASH_SST800A:
 132                        printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
 133                        break;
 134                case FLASH_SST160A:
 135                        printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
 136                        break;
 137                case FLASH_STMW320DT:
 138                        printf ("M29W320DT (32 M, top sector)\n");
 139                        break;
 140                case FLASH_MXLV320T:
 141                        printf ("MXLV320T (32 Mbit, top sector)\n");
 142                        break;
 143                default:
 144                        printf("Unknown Chip Type\n");
 145                        break;
 146        }
 147
 148        printf("  Size: %ld KB in %d Sectors\n",
 149                        info->size >> 10, info->sector_count);
 150
 151        printf("  Sector Start Addresses:");
 152        for (i = 0; i < info->sector_count; ++i) {
 153                /*
 154                 * Check if whole sector is erased
 155                 */
 156                if (i != (info->sector_count - 1))
 157                        size = info->start[i + 1] - info->start[i];
 158                else
 159                        size = info->start[0] + info->size - info->start[i];
 160                erased = 1;
 161                flash = (volatile unsigned long *)info->start[i];
 162                size = size >> 2;       /* divide by 4 for longword access */
 163                for (k = 0; k < size; k++) {
 164                        if (*flash++ != 0xffffffff) {
 165                                erased = 0;
 166                                break;
 167                        }
 168                }
 169
 170                if ((i % 5) == 0)
 171                        printf("\n   ");
 172                printf(" %08lX%s%s",
 173                                info->start[i],
 174                                erased ? " E" : "  ",
 175                                info->protect[i] ? "RO " : "   ");
 176        }
 177        printf("\n");
 178        return;
 179}
 180
 181
 182/*
 183 * The following code cannot be run from FLASH!
 184 */
 185#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 186static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 187{
 188        /* bit 0 used for big flash marking */
 189        if ((ulong)addr & 0x1)
 190                return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);
 191        else
 192                return flash_get_size_1(addr, info);
 193}
 194
 195static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)
 196#else
 197static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 198#endif
 199{
 200        short i;
 201        CONFIG_SYS_FLASH_WORD_SIZE value;
 202        ulong base = (ulong) addr;
 203        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 204
 205        DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 206
 207        /* Write auto select command: read Manufacturer ID */
 208        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 209        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 210        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 211        udelay(1000);
 212
 213        value = addr2[0];
 214        DEBUGF("FLASH MANUFACT: %x\n", value);
 215
 216        switch (value) {
 217                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 218                        info->flash_id = FLASH_MAN_AMD;
 219                        break;
 220                case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 221                        info->flash_id = FLASH_MAN_FUJ;
 222                        break;
 223                case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 224                        info->flash_id = FLASH_MAN_SST;
 225                        break;
 226                case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 227                        info->flash_id = FLASH_MAN_STM;
 228                        break;
 229                default:
 230                        info->flash_id = FLASH_UNKNOWN;
 231                        info->sector_count = 0;
 232                        info->size = 0;
 233                        return (0);     /* no or unknown flash  */
 234        }
 235
 236        value = addr2[1];       /* device ID            */
 237        DEBUGF("\nFLASH DEVICEID: %x\n", value);
 238
 239        switch (value) {
 240                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV040B:
 241                        info->flash_id += FLASH_AM040;
 242                        info->sector_count = 8;
 243                        info->size = 0x0080000; /* => 512 ko */
 244                        break;
 245
 246                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F040B:
 247                        info->flash_id += FLASH_AM040;
 248                        info->sector_count = 8;
 249                        info->size = 0x0080000; /* => 512 ko */
 250                        break;
 251
 252                case (CONFIG_SYS_FLASH_WORD_SIZE) STM_ID_M29W040B:
 253                        info->flash_id += FLASH_AM040;
 254                        info->sector_count = 8;
 255                        info->size = 0x0080000; /* => 512 ko */
 256                        break;
 257
 258                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F016D:
 259                        info->flash_id += FLASH_AMD016;
 260                        info->sector_count = 32;
 261                        info->size = 0x00200000;
 262                        break;          /* => 2 MB              */
 263
 264                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV033C:
 265                        info->flash_id += FLASH_AMDLV033C;
 266                        info->sector_count = 64;
 267                        info->size = 0x00400000;
 268                        break;          /* => 4 MB              */
 269
 270                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400T:
 271                        info->flash_id += FLASH_AM400T;
 272                        info->sector_count = 11;
 273                        info->size = 0x00080000;
 274                        break;          /* => 0.5 MB            */
 275
 276                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400B:
 277                        info->flash_id += FLASH_AM400B;
 278                        info->sector_count = 11;
 279                        info->size = 0x00080000;
 280                        break;          /* => 0.5 MB            */
 281
 282                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800T:
 283                        info->flash_id += FLASH_AM800T;
 284                        info->sector_count = 19;
 285                        info->size = 0x00100000;
 286                        break;          /* => 1 MB              */
 287
 288                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800B:
 289                        info->flash_id += FLASH_AM800B;
 290                        info->sector_count = 19;
 291                        info->size = 0x00100000;
 292                        break;          /* => 1 MB              */
 293
 294                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160T:
 295                        info->flash_id += FLASH_AM160T;
 296                        info->sector_count = 35;
 297                        info->size = 0x00200000;
 298                        break;          /* => 2 MB              */
 299
 300                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160B:
 301                        info->flash_id += FLASH_AM160B;
 302                        info->sector_count = 35;
 303                        info->size = 0x00200000;
 304                        break;          /* => 2 MB              */
 305
 306                default:
 307                        info->flash_id = FLASH_UNKNOWN;
 308                        return (0);     /* => no or unknown flash */
 309        }
 310
 311        /* set up sector start address table */
 312        if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 313                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 314                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 315                for (i = 0; i < info->sector_count; i++)
 316                        info->start[i] = base + (i * 0x00010000);
 317        } else {
 318                if (info->flash_id & FLASH_BTYPE) {
 319                        /* set sector offsets for bottom boot block type        */
 320                        info->start[0] = base + 0x00000000;
 321                        info->start[1] = base + 0x00004000;
 322                        info->start[2] = base + 0x00006000;
 323                        info->start[3] = base + 0x00008000;
 324                        for (i = 4; i < info->sector_count; i++) {
 325                                info->start[i] =
 326                                        base + (i * 0x00010000) - 0x00030000;
 327                        }
 328                } else {
 329                        /* set sector offsets for top boot block type           */
 330                        i = info->sector_count - 1;
 331                        info->start[i--] = base + info->size - 0x00004000;
 332                        info->start[i--] = base + info->size - 0x00006000;
 333                        info->start[i--] = base + info->size - 0x00008000;
 334                        for (; i >= 0; i--) {
 335                                info->start[i] = base + i * 0x00010000;
 336                        }
 337                }
 338        }
 339
 340        /* check for protected sectors */
 341        for (i = 0; i < info->sector_count; i++) {
 342                /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 343                /* D0 = 1 if protected */
 344                addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 345
 346                /* For AMD29033C flash we need to resend the command of *
 347                 * reading flash protection for upper 8 Mb of flash     */
 348                if (i == 32) {
 349                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 350                        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 351                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 352                }
 353
 354                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 355                        info->protect[i] = 0;
 356                else
 357                        info->protect[i] = addr2[2] & 1;
 358        }
 359
 360        /* issue bank reset to return to read mode */
 361        addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 362
 363        return (info->size);
 364}
 365
 366static int wait_for_DQ7_1(flash_info_t * info, int sect)
 367{
 368        ulong start, now, last;
 369        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 370                (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 371
 372        start = get_timer(0);
 373        last = start;
 374        while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 375                        (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 376                if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 377                        printf("Timeout\n");
 378                        return -1;
 379                }
 380                /* show that we're waiting */
 381                if ((now - last) > 1000) {      /* every second */
 382                        putc('.');
 383                        last = now;
 384                }
 385        }
 386        return 0;
 387}
 388
 389#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 390int flash_erase(flash_info_t * info, int s_first, int s_last)
 391{
 392        if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 393                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 394                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
 395                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
 396                return flash_erase_2(info, s_first, s_last);
 397        } else {
 398                return flash_erase_1(info, s_first, s_last);
 399        }
 400}
 401
 402static int flash_erase_1(flash_info_t * info, int s_first, int s_last)
 403#else
 404int flash_erase(flash_info_t * info, int s_first, int s_last)
 405#endif
 406{
 407        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 408        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 409        int flag, prot, sect;
 410        int i;
 411
 412        if ((s_first < 0) || (s_first > s_last)) {
 413                if (info->flash_id == FLASH_UNKNOWN)
 414                        printf("- missing\n");
 415                else
 416                        printf("- no sectors to erase\n");
 417                return 1;
 418        }
 419
 420        if (info->flash_id == FLASH_UNKNOWN) {
 421                printf("Can't erase unknown flash type - aborted\n");
 422                return 1;
 423        }
 424
 425        prot = 0;
 426        for (sect = s_first; sect <= s_last; ++sect) {
 427                if (info->protect[sect])
 428                        prot++;
 429        }
 430
 431        if (prot)
 432                printf("- Warning: %d protected sectors will not be erased!", prot);
 433
 434        printf("\n");
 435
 436        /* Disable interrupts which might cause a timeout here */
 437        flag = disable_interrupts();
 438
 439        /* Start erase on unprotected sectors */
 440        for (sect = s_first; sect <= s_last; sect++) {
 441                if (info->protect[sect] == 0) { /* not protected */
 442                        addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 443
 444                        if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 445                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 446                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 447                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 448                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 449                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 450                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 451                                for (i = 0; i < 50; i++)
 452                                        udelay(1000);   /* wait 1 ms */
 453                        } else {
 454                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 455                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 456                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 457                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 458                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 459                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 460                        }
 461                        /*
 462                         * Wait for each sector to complete, it's more
 463                         * reliable.  According to AMD Spec, you must
 464                         * issue all erase commands within a specified
 465                         * timeout.  This has been seen to fail, especially
 466                         * if printf()s are included (for debug)!!
 467                         */
 468                        wait_for_DQ7_1(info, sect);
 469                }
 470        }
 471
 472        /* re-enable interrupts if necessary */
 473        if (flag)
 474                enable_interrupts();
 475
 476        /* wait at least 80us - let's wait 1 ms */
 477        udelay(1000);
 478
 479        /* reset to read mode */
 480        addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 481        addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 482
 483        printf(" done\n");
 484        return 0;
 485}
 486
 487/*-----------------------------------------------------------------------
 488 * Copy memory to flash, returns:
 489 * 0 - OK
 490 * 1 - write timeout
 491 * 2 - Flash not erased
 492 */
 493int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 494{
 495        ulong cp, wp, data;
 496        int i, l, rc;
 497
 498        wp = (addr & ~3);       /* get lower word aligned address */
 499
 500        /*
 501         * handle unaligned start bytes
 502         */
 503        if ((l = addr - wp) != 0) {
 504                data = 0;
 505                for (i = 0, cp = wp; i < l; ++i, ++cp)
 506                        data = (data << 8) | (*(uchar *) cp);
 507
 508                for (; i < 4 && cnt > 0; ++i) {
 509                        data = (data << 8) | *src++;
 510                        --cnt;
 511                        ++cp;
 512                }
 513
 514                for (; cnt == 0 && i < 4; ++i, ++cp)
 515                        data = (data << 8) | (*(uchar *) cp);
 516
 517                if ((rc = write_word(info, wp, data)) != 0)
 518                        return (rc);
 519
 520                wp += 4;
 521        }
 522
 523        /*
 524         * handle word aligned part
 525         */
 526        while (cnt >= 4) {
 527                data = 0;
 528                for (i = 0; i < 4; ++i)
 529                        data = (data << 8) | *src++;
 530
 531                if ((rc = write_word(info, wp, data)) != 0)
 532                        return (rc);
 533
 534                wp += 4;
 535                cnt -= 4;
 536        }
 537
 538        if (cnt == 0)
 539                return (0);
 540
 541        /*
 542         * handle unaligned tail bytes
 543         */
 544        data = 0;
 545        for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
 546                data = (data << 8) | *src++;
 547                --cnt;
 548        }
 549        for (; i < 4; ++i, ++cp)
 550                data = (data << 8) | (*(uchar *) cp);
 551
 552        return (write_word(info, wp, data));
 553}
 554
 555/*-----------------------------------------------------------------------
 556 * Copy memory to flash, returns:
 557 * 0 - OK
 558 * 1 - write timeout
 559 * 2 - Flash not erased
 560 */
 561#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 562static int write_word(flash_info_t * info, ulong dest, ulong data)
 563{
 564        if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 565                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 566                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
 567                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
 568                return write_word_2(info, dest, data);
 569        } else {
 570                return write_word_1(info, dest, data);
 571        }
 572}
 573
 574static int write_word_1(flash_info_t * info, ulong dest, ulong data)
 575#else
 576static int write_word(flash_info_t * info, ulong dest, ulong data)
 577#endif
 578{
 579        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 580        volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
 581        volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
 582        ulong start;
 583        int i, flag;
 584
 585        /* Check if Flash is (sufficiently) erased */
 586        if ((*((vu_long *)dest) & data) != data)
 587                return (2);
 588
 589        for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 590                /* Disable interrupts which might cause a timeout here */
 591                flag = disable_interrupts();
 592
 593                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 594                addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 595                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 596
 597                dest2[i] = data2[i];
 598
 599                /* re-enable interrupts if necessary */
 600                if (flag)
 601                        enable_interrupts();
 602
 603                /* data polling for D7 */
 604                start = get_timer(0);
 605                while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 606                                (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 607
 608                        if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 609                                return (1);
 610                }
 611        }
 612
 613        return (0);
 614}
 615
 616#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 617
 618#undef  CONFIG_SYS_FLASH_WORD_SIZE
 619#define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
 620
 621/*
 622 * The following code cannot be run from FLASH!
 623 */
 624static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
 625{
 626        short i;
 627        int n;
 628        CONFIG_SYS_FLASH_WORD_SIZE value;
 629        ulong base = (ulong) addr;
 630        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 631
 632        DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 633
 634        /* issue bank reset to return to read mode */
 635        addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 636        /* Write auto select command: read Manufacturer ID */
 637        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 638        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 639        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 640        udelay(1000);
 641
 642        value = addr2[0];
 643        DEBUGF("FLASH MANUFACT: %x\n", value);
 644
 645        switch (value) {
 646                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 647                        info->flash_id = FLASH_MAN_AMD;
 648                        break;
 649                case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 650                        info->flash_id = FLASH_MAN_FUJ;
 651                        break;
 652                case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 653                        info->flash_id = FLASH_MAN_SST;
 654                        break;
 655                case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 656                        info->flash_id = FLASH_MAN_STM;
 657                        break;
 658                case (CONFIG_SYS_FLASH_WORD_SIZE) MX_MANUFACT:
 659                        info->flash_id = FLASH_MAN_MX;
 660                        break;
 661                default:
 662                        info->flash_id = FLASH_UNKNOWN;
 663                        info->sector_count = 0;
 664                        info->size = 0;
 665                        return (0);     /* no or unknown flash  */
 666        }
 667
 668        value = addr2[1];       /* device ID            */
 669        DEBUGF("\nFLASH DEVICEID: %x\n", value);
 670
 671        switch (value) {
 672                case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
 673                        info->flash_id += FLASH_AM320T;
 674                        info->sector_count = 71;
 675                        info->size = 0x00400000;
 676                        break;  /* => 4 MB      */
 677                case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
 678                        info->flash_id += FLASH_AM320B;
 679                        info->sector_count = 71;
 680                        info->size = 0x00400000;
 681                        break;  /* => 4 MB      */
 682                case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
 683                        info->flash_id += FLASH_STMW320DT;
 684                        info->sector_count = 67;
 685                        info->size = 0x00400000;
 686                        break;  /* => 4 MB      */
 687                case (CONFIG_SYS_FLASH_WORD_SIZE)MX_ID_LV320T:
 688                        info->flash_id += FLASH_MXLV320T;
 689                        info->sector_count = 71;
 690                        info->size = 0x00400000;
 691                        break;  /* => 4 MB      */
 692                default:
 693                        info->flash_id = FLASH_UNKNOWN;
 694                        return (0);     /* => no or unknown flash */
 695        }
 696
 697        /* set up sector start address table */
 698        if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 699                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 700                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 701                for (i = 0; i < info->sector_count; i++)
 702                        info->start[i] = base + (i * 0x00010000);
 703        } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
 704                /* set sector offsets for top boot block type           */
 705                base += info->size;
 706                i = info->sector_count;
 707                /*  1 x 16k boot sector */
 708                base -= 16 << 10;
 709                --i;
 710                info->start[i] = base;
 711                /*  2 x 8k  boot sectors */
 712                for (n = 0; n < 2; ++n) {
 713                        base -= 8 << 10;
 714                        --i;
 715                        info->start[i] = base;
 716                }
 717                /*  1 x 32k boot sector */
 718                base -= 32 << 10;
 719                --i;
 720                info->start[i] = base;
 721
 722                while (i > 0) {                 /* 64k regular sectors  */
 723                        base -= 64 << 10;
 724                        --i;
 725                        info->start[i] = base;
 726                }
 727        } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
 728                i = info->sector_count - 1;
 729                info->start[i--] = base + info->size - 0x00002000;
 730                info->start[i--] = base + info->size - 0x00004000;
 731                info->start[i--] = base + info->size - 0x00006000;
 732                info->start[i--] = base + info->size - 0x00008000;
 733                info->start[i--] = base + info->size - 0x0000a000;
 734                info->start[i--] = base + info->size - 0x0000c000;
 735                info->start[i--] = base + info->size - 0x0000e000;
 736                info->start[i--] = base + info->size - 0x00010000;
 737
 738                for (; i >= 0; i--)
 739                        info->start[i] = base + i * 0x00010000;
 740        } else {
 741                if (info->flash_id & FLASH_BTYPE) {
 742                        /* set sector offsets for bottom boot block type        */
 743                        info->start[0] = base + 0x00000000;
 744                        info->start[1] = base + 0x00004000;
 745                        info->start[2] = base + 0x00006000;
 746                        info->start[3] = base + 0x00008000;
 747
 748                        for (i = 4; i < info->sector_count; i++)
 749                                info->start[i] = base + (i * 0x00010000) - 0x00030000;
 750                } else {
 751                        /* set sector offsets for top boot block type           */
 752                        i = info->sector_count - 1;
 753                        info->start[i--] = base + info->size - 0x00004000;
 754                        info->start[i--] = base + info->size - 0x00006000;
 755                        info->start[i--] = base + info->size - 0x00008000;
 756
 757                        for (; i >= 0; i--)
 758                                info->start[i] = base + i * 0x00010000;
 759                }
 760        }
 761
 762        /* check for protected sectors */
 763        for (i = 0; i < info->sector_count; i++) {
 764                /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 765                /* D0 = 1 if protected */
 766                addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 767
 768                /* For AMD29033C flash we need to resend the command of *
 769                 * reading flash protection for upper 8 Mb of flash     */
 770                if (i == 32) {
 771                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 772                        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 773                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 774                }
 775
 776                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 777                        info->protect[i] = 0;
 778                else
 779                        info->protect[i] = addr2[2] & 1;
 780        }
 781
 782        /* issue bank reset to return to read mode */
 783        addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 784
 785        return (info->size);
 786}
 787
 788static int wait_for_DQ7_2(flash_info_t * info, int sect)
 789{
 790        ulong start, now, last;
 791        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 792                (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 793
 794        start = get_timer(0);
 795        last = start;
 796        while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 797                        (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 798                if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 799                        printf("Timeout\n");
 800                        return -1;
 801                }
 802                /* show that we're waiting */
 803                if ((now - last) > 1000) {      /* every second */
 804                        putc('.');
 805                        last = now;
 806                }
 807        }
 808        return 0;
 809}
 810
 811static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
 812{
 813        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 814        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 815        int flag, prot, sect;
 816        int i;
 817
 818        if ((s_first < 0) || (s_first > s_last)) {
 819                if (info->flash_id == FLASH_UNKNOWN)
 820                        printf("- missing\n");
 821                else
 822                        printf("- no sectors to erase\n");
 823                return 1;
 824        }
 825
 826        if (info->flash_id == FLASH_UNKNOWN) {
 827                printf("Can't erase unknown flash type - aborted\n");
 828                return 1;
 829        }
 830
 831        prot = 0;
 832        for (sect = s_first; sect <= s_last; ++sect) {
 833                if (info->protect[sect])
 834                        prot++;
 835        }
 836
 837        if (prot)
 838                printf("- Warning: %d protected sectors will not be erased!",   prot);
 839
 840        printf("\n");
 841
 842        /* Disable interrupts which might cause a timeout here */
 843        flag = disable_interrupts();
 844
 845        /* Start erase on unprotected sectors */
 846        for (sect = s_first; sect <= s_last; sect++) {
 847                if (info->protect[sect] == 0) { /* not protected */
 848                        addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 849
 850                        if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 851                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 852                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 853                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 854                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 855                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 856                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 857                                for (i = 0; i < 50; i++)
 858                                        udelay(1000);   /* wait 1 ms */
 859                        } else {
 860                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 861                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 862                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 863                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 864                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 865                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 866                        }
 867                        /*
 868                         * Wait for each sector to complete, it's more
 869                         * reliable.  According to AMD Spec, you must
 870                         * issue all erase commands within a specified
 871                         * timeout.  This has been seen to fail, especially
 872                         * if printf()s are included (for debug)!!
 873                         */
 874                        wait_for_DQ7_2(info, sect);
 875                }
 876        }
 877
 878        /* re-enable interrupts if necessary */
 879        if (flag)
 880                enable_interrupts();
 881
 882        /* wait at least 80us - let's wait 1 ms */
 883        udelay(1000);
 884
 885        /* reset to read mode */
 886        addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 887        addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 888
 889        printf(" done\n");
 890        return 0;
 891}
 892
 893static int write_word_2(flash_info_t * info, ulong dest, ulong data)
 894{
 895        ulong *data_ptr = &data;
 896        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
 897        volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
 898        volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
 899        ulong start;
 900        int i;
 901
 902        /* Check if Flash is (sufficiently) erased */
 903        if ((*((vu_long *)dest) & data) != data)
 904                return (2);
 905
 906        for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 907                int flag;
 908
 909                /* Disable interrupts which might cause a timeout here */
 910                flag = disable_interrupts();
 911
 912                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 913                addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 914                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 915
 916                dest2[i] = data2[i];
 917
 918                /* re-enable interrupts if necessary */
 919                if (flag)
 920                        enable_interrupts();
 921
 922                /* data polling for D7 */
 923                start = get_timer(0);
 924                while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 925                                (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 926
 927                        if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 928                                return (1);
 929                }
 930        }
 931
 932        return (0);
 933}
 934#endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */
 935
 936/*-----------------------------------------------------------------------
 937 * Functions
 938 */
 939static ulong flash_get_size(vu_long * addr, flash_info_t * info);
 940static int write_word(flash_info_t * info, ulong dest, ulong data);
 941
 942/*-----------------------------------------------------------------------
 943 */
 944
 945unsigned long flash_init(void)
 946{
 947        unsigned long total_b = 0;
 948        unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
 949        unsigned short index = 0;
 950        int i;
 951        unsigned long val;
 952        unsigned long ebc_boot_size;
 953        unsigned long boot_selection;
 954
 955        mfsdr(sdr_pstrp0, val);
 956        index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 28;
 957
 958        if ((index == 0xc) || (index == 8)) {
 959                /*
 960                 * Boot Settings in IIC EEprom address 0xA8 or 0xA0
 961                 * Read Serial Device Strap Register1 in PPC440SPe
 962                 */
 963                mfsdr(SDR0_SDSTP1, val);
 964                boot_selection  = val & SDR0_SDSTP1_BOOT_SEL_MASK;
 965                ebc_boot_size   = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
 966
 967                switch(boot_selection) {
 968                        case SDR0_SDSTP1_BOOT_SEL_EBC:
 969                                switch(ebc_boot_size) {
 970                                        case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
 971                                                index = 3;
 972                                                break;
 973                                        case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
 974                                                index = 0;
 975                                                break;
 976                                }
 977                                break;
 978
 979                        case SDR0_SDSTP1_BOOT_SEL_PCI:
 980                                index = 1;
 981                                break;
 982
 983                }
 984        } /*else if (index == 0) {*/
 985/*              if (in8(FPGA_SETTING_REG) & FPGA_SET_REG_OP_CODE_FLASH_ABOVE)*/
 986/*                      index = 8;*/ /* sram below op code flash -> new index 8*/
 987/*      }*/
 988
 989        DEBUGF("\n");
 990        DEBUGF("FLASH: Index: %d\n", index);
 991
 992        /* Init: no FLASHes known */
 993        for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
 994                flash_info[i].flash_id = FLASH_UNKNOWN;
 995                flash_info[i].sector_count = -1;
 996                flash_info[i].size = 0;
 997
 998                /* check whether the address is 0 */
 999                if (flash_addr_table[index][i] == 0)
1000                        continue;

1001
1002                /* call flash_get_size() to initialize sector address */
1003                size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
1004                                &flash_info[i]);
1005
1006                flash_info[i].size = size_b[i];
1007
1008                if (flash_info[i].flash_id == FLASH_UNKNOWN) {
1009                        printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
1010                                        i, size_b[i], size_b[i] << 20);
1011                        flash_info[i].sector_count = -1;
1012                        flash_info[i].size = 0;
1013                }
1014
1015                /* Monitor protection ON by default */
1016                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
1017                                    CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
1018                                    &flash_info[i]);
1019#if defined(CONFIG_ENV_IS_IN_FLASH)
1020                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
1021                                    CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
1022                                    &flash_info[i]);
1023#if defined(CONFIG_ENV_ADDR_REDUND)
1024                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
1025                                    CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
1026                                    &flash_info[i]);
1027#endif
1028#endif
1029                total_b += flash_info[i].size;
1030        }
1031
1032        return total_b;
1033}
1034