| 1 | /* |
| 2 | * Copyright (C) 2009 Qi Hardware Inc., |
| 3 | * Author: Xiangfu Liu <xiangfu@qi-hardware.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License |
| 7 | * version 3 as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 17 | * Boston, MA 02110-1301, USA |
| 18 | */ |
| 19 | #include "jz4750.h" |
| 20 | #include "nandflash.h" |
| 21 | #include "usb_boot.h" |
| 22 | #include "usb_boot_defines.h" |
| 23 | |
| 24 | #define dprintf(n...) |
| 25 | |
| 26 | #define __nand_enable() (REG_EMC_NFCSR |= EMC_NFCSR_NFE1 | EMC_NFCSR_NFCE1) |
| 27 | #define __nand_disable() (REG_EMC_NFCSR &= ~(EMC_NFCSR_NFCE1)) |
| 28 | #define __nand_ready() ((REG_GPIO_PXPIN(2) & 0x08000000) ? 1 : 0) |
| 29 | #define __nand_cmd(n) (REG8(cmdport) = (n)) |
| 30 | #define __nand_addr(n) (REG8(addrport) = (n)) |
| 31 | #define __nand_data8() REG8(dataport) |
| 32 | #define __nand_data16() REG16(dataport) |
| 33 | |
| 34 | #define CMD_READA 0x00 |
| 35 | #define CMD_READB 0x01 |
| 36 | #define CMD_READC 0x50 |
| 37 | #define CMD_ERASE_SETUP 0x60 |
| 38 | #define CMD_ERASE 0xD0 |
| 39 | #define CMD_READ_STATUS 0x70 |
| 40 | #define CMD_CONFIRM 0x30 |
| 41 | #define CMD_SEQIN 0x80 |
| 42 | #define CMD_PGPROG 0x10 |
| 43 | #define CMD_READID 0x90 |
| 44 | |
| 45 | #define ECC_BLOCK 512 |
| 46 | |
| 47 | static volatile unsigned char *gpio_base = (volatile unsigned char *)0xb0010000; |
| 48 | static volatile unsigned char *emc_base = (volatile unsigned char *)0xb3010000; |
| 49 | static volatile unsigned char *addrport = (volatile unsigned char *)0xb8010000; |
| 50 | static volatile unsigned char *dataport = (volatile unsigned char *)0xb8000000; |
| 51 | static volatile unsigned char *cmdport = (volatile unsigned char *)0xb8008000; |
| 52 | |
| 53 | static int bus = 8, row = 2, pagesize = 512, oobsize = 16, ppb = 32; |
| 54 | static int eccpos = 3, bchbit = 8, par_size = 13, forceerase = 1, wp_pin; |
| 55 | static int oobfs = 0; /* 1:store file system information in oob, 0:don't store */ |
| 56 | static int oobecc = 0; /* Whether the oob data of the binary contains ECC data? */ |
| 57 | static int bad_block_page = 127; /* Specify the page number of badblock flag inside a block */ |
| 58 | static u32 bad_block_pos = 0; /* Specify the badblock flag offset inside the oob */ |
| 59 | static u8 oob_buf[256] = {0}; |
| 60 | extern struct hand Hand; |
| 61 | extern u16 handshake_PKT[4]; |
| 62 | |
| 63 | static inline void __nand_sync(void) |
| 64 | { |
| 65 | unsigned int timeout = 10000; |
| 66 | while ((REG_GPIO_PXPIN(2) & 0x08000000) && timeout--); |
| 67 | while (!(REG_GPIO_PXPIN(2) & 0x08000000)); |
| 68 | } |
| 69 | |
| 70 | static int read_oob(void *buf, u32 size, u32 pg); |
| 71 | static int nand_data_write8(char *buf, int count); |
| 72 | static int nand_data_write16(char *buf, int count); |
| 73 | static int nand_data_read8(char *buf, int count); |
| 74 | static int nand_data_read16(char *buf, int count); |
| 75 | |
| 76 | static int (*write_proc)(char *, int) = NULL; |
| 77 | static int (*read_proc)(char *, int) = NULL; |
| 78 | |
| 79 | inline void nand_enable_4750(unsigned int csn) |
| 80 | { |
| 81 | //modify this fun to a specifical borad |
| 82 | //this fun to enable the chip select pin csn |
| 83 | //the choosn chip can work after this fun |
| 84 | //dprintf("\n Enable chip select :%d",csn); |
| 85 | __nand_enable(); |
| 86 | } |
| 87 | |
| 88 | inline void nand_disable_4750(unsigned int csn) |
| 89 | { |
| 90 | //modify this fun to a specifical borad |
| 91 | //this fun to enable the chip select pin csn |
| 92 | //the choosn chip can not work after this fun |
| 93 | //dprintf("\n Disable chip select :%d",csn); |
| 94 | __nand_disable(); |
| 95 | } |
| 96 | |
| 97 | unsigned int nand_query_4750(u8 *id) |
| 98 | { |
| 99 | __nand_sync(); |
| 100 | __nand_cmd(CMD_READID); |
| 101 | __nand_addr(0); |
| 102 | |
| 103 | id[0] = __nand_data8(); //VID |
| 104 | id[1] = __nand_data8(); //PID |
| 105 | id[2] = __nand_data8(); //CHIP ID |
| 106 | id[3] = __nand_data8(); //PAGE ID |
| 107 | id[4] = __nand_data8(); //PLANE ID |
| 108 | |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | int nand_init_4750(int bus_width, int row_cycle, int page_size, int page_per_block, |
| 113 | int bch_bit, int ecc_pos, int bad_pos, int bad_page, int force) |
| 114 | { |
| 115 | bus = bus_width; |
| 116 | row = row_cycle; |
| 117 | pagesize = page_size; |
| 118 | oobsize = pagesize / 32; |
| 119 | ppb = page_per_block; |
| 120 | bchbit = bch_bit; |
| 121 | forceerase = force; |
| 122 | eccpos = ecc_pos; |
| 123 | bad_block_pos = bad_pos; |
| 124 | bad_block_page = bad_page; |
| 125 | wp_pin = Hand.nand_wppin; |
| 126 | |
| 127 | if (bchbit == 8) |
| 128 | par_size = 13; |
| 129 | else |
| 130 | par_size = 7; |
| 131 | |
| 132 | |
| 133 | #if 0 |
| 134 | gpio_base = (u8 *)gbase; |
| 135 | emc_base = (u8 *)ebase; |
| 136 | addrport = (u8 *)aport; |
| 137 | dataport = (u8 *)dport; |
| 138 | cmdport = (u8 *)cport; |
| 139 | #endif |
| 140 | /* Initialize NAND Flash Pins */ |
| 141 | if (bus == 8) { |
| 142 | __gpio_as_nand_8bit(); |
| 143 | } |
| 144 | |
| 145 | if (wp_pin) |
| 146 | { |
| 147 | __gpio_as_output(wp_pin); |
| 148 | __gpio_disable_pull(wp_pin); |
| 149 | } |
| 150 | __nand_enable(); |
| 151 | |
| 152 | // REG_EMC_SMCR1 = 0x0fff7700; //slow speed |
| 153 | REG_EMC_SMCR1 = 0x04444400; //normal speed |
| 154 | // REG_EMC_SMCR1 = 0x0d221200; //fast speed |
| 155 | |
| 156 | /* If ECCPOS isn't configured in config file, the initial value is 0 */ |
| 157 | if (eccpos == 0) { |
| 158 | eccpos = 3; |
| 159 | } |
| 160 | |
| 161 | if (bus == 8) { |
| 162 | write_proc = nand_data_write8; |
| 163 | read_proc = nand_data_read8; |
| 164 | } else { |
| 165 | write_proc = nand_data_write16; |
| 166 | read_proc = nand_data_read16; |
| 167 | } |
| 168 | return 0; |
| 169 | } |
| 170 | |
| 171 | int nand_fini_4750(void) |
| 172 | { |
| 173 | __nand_disable(); |
| 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | /* |
| 178 | * Read oob <pagenum> pages from <startpage> page. |
| 179 | * Don't skip bad block. |
| 180 | * Don't use HW ECC. |
| 181 | */ |
| 182 | u32 nand_read_oob_4750(void *buf, u32 startpage, u32 pagenum) |
| 183 | { |
| 184 | u32 cnt, cur_page; |
| 185 | u8 *tmpbuf; |
| 186 | |
| 187 | tmpbuf = (u8 *)buf; |
| 188 | |
| 189 | cur_page = startpage; |
| 190 | cnt = 0; |
| 191 | |
| 192 | while (cnt < pagenum) { |
| 193 | read_oob((void *)tmpbuf, oobsize, cur_page); |
| 194 | tmpbuf += oobsize; |
| 195 | cur_page++; |
| 196 | cnt++; |
| 197 | } |
| 198 | |
| 199 | return cur_page; |
| 200 | } |
| 201 | |
| 202 | static int nand_check_block(u32 block) |
| 203 | { |
| 204 | u32 pg,i; |
| 205 | |
| 206 | if ( bad_block_page >= ppb ) //do absolute bad block detect! |
| 207 | { |
| 208 | pg = block * ppb + 0; |
| 209 | read_oob(oob_buf, oobsize, pg); |
| 210 | if ( oob_buf[0] != 0xff || oob_buf[1] != 0xff ) |
| 211 | { |
| 212 | serial_puts("Absolute skip a bad block\n"); |
| 213 | serial_put_hex(block); |
| 214 | return 1; |
| 215 | } |
| 216 | |
| 217 | pg = block * ppb + 1; |
| 218 | read_oob(oob_buf, oobsize, pg); |
| 219 | if ( oob_buf[0] != 0xff || oob_buf[1] != 0xff ) |
| 220 | { |
| 221 | serial_puts("Absolute skip a bad block\n"); |
| 222 | serial_put_hex(block); |
| 223 | return 1; |
| 224 | } |
| 225 | |
| 226 | pg = block * ppb + ppb - 2 ; |
| 227 | read_oob(oob_buf, oobsize, pg); |
| 228 | if ( oob_buf[0] != 0xff || oob_buf[1] != 0xff ) |
| 229 | { |
| 230 | serial_puts("Absolute skip a bad block\n"); |
| 231 | serial_put_hex(block); |
| 232 | return 1; |
| 233 | } |
| 234 | |
| 235 | pg = block * ppb + ppb - 1 ; |
| 236 | read_oob(oob_buf, oobsize, pg); |
| 237 | if ( oob_buf[0] != 0xff || oob_buf[1] != 0xff ) |
| 238 | { |
| 239 | serial_puts("Absolute skip a bad block\n"); |
| 240 | serial_put_hex(block); |
| 241 | return 1; |
| 242 | } |
| 243 | |
| 244 | } |
| 245 | else |
| 246 | { |
| 247 | pg = block * ppb + bad_block_page; |
| 248 | read_oob(oob_buf, oobsize, pg); |
| 249 | if (oob_buf[bad_block_pos] != 0xff) |
| 250 | { |
| 251 | serial_puts("Skip a bad block at"); |
| 252 | serial_put_hex(block); |
| 253 | return 1; |
| 254 | } |
| 255 | |
| 256 | } |
| 257 | return 0; |
| 258 | } |
| 259 | |
| 260 | |
| 261 | /* |
| 262 | * Read data <pagenum> pages from <startpage> page. |
| 263 | * Don't skip bad block. |
| 264 | * Don't use HW ECC. |
| 265 | */ |
| 266 | u32 nand_read_raw_4750(void *buf, u32 startpage, u32 pagenum, int option) |
| 267 | { |
| 268 | u32 cnt, j; |
| 269 | u32 cur_page, rowaddr; |
| 270 | u8 *tmpbuf; |
| 271 | |
| 272 | tmpbuf = (u8 *)buf; |
| 273 | |
| 274 | cur_page = startpage; |
| 275 | cnt = 0; |
| 276 | while (cnt < pagenum) { |
| 277 | if ((cur_page % ppb) == 0) { |
| 278 | if (nand_check_block(cur_page / ppb)) { |
| 279 | cur_page += ppb; // Bad block, set to next block |
| 280 | continue; |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | __nand_cmd(CMD_READA); |
| 285 | __nand_addr(0); |
| 286 | if (pagesize != 512) |
| 287 | __nand_addr(0); |
| 288 | |
| 289 | rowaddr = cur_page; |
| 290 | for (j = 0; j < row; j++) { |
| 291 | __nand_addr(rowaddr & 0xff); |
| 292 | rowaddr >>= 8; |
| 293 | } |
| 294 | |
| 295 | if (pagesize != 512) |
| 296 | __nand_cmd(CMD_CONFIRM); |
| 297 | |
| 298 | __nand_sync(); |
| 299 | read_proc(tmpbuf, pagesize); |
| 300 | |
| 301 | tmpbuf += pagesize; |
| 302 | if (option != NO_OOB) |
| 303 | { |
| 304 | read_oob(tmpbuf, oobsize, cur_page); |
| 305 | tmpbuf += oobsize; |
| 306 | } |
| 307 | |
| 308 | cur_page++; |
| 309 | cnt++; |
| 310 | } |
| 311 | |
| 312 | return cur_page; |
| 313 | } |
| 314 | |
| 315 | |
| 316 | u32 nand_erase_4750(int blk_num, int sblk, int force) |
| 317 | { |
| 318 | int i, j; |
| 319 | u32 cur, rowaddr; |
| 320 | |
| 321 | if (wp_pin) |
| 322 | __gpio_set_pin(wp_pin); |
| 323 | cur = sblk * ppb; |
| 324 | for (i = 0; i < blk_num; i++) { |
| 325 | rowaddr = cur; |
| 326 | |
| 327 | if (!force) /* if set, erase anything */ |
| 328 | if (nand_check_block(cur/ppb)) |
| 329 | { |
| 330 | cur += ppb; |
| 331 | blk_num += Hand.nand_plane; |
| 332 | continue; |
| 333 | } |
| 334 | |
| 335 | __nand_cmd(CMD_ERASE_SETUP); |
| 336 | |
| 337 | for (j = 0; j < row; j++) { |
| 338 | __nand_addr(rowaddr & 0xff); |
| 339 | rowaddr >>= 8; |
| 340 | } |
| 341 | __nand_cmd(CMD_ERASE); |
| 342 | __nand_sync(); |
| 343 | __nand_cmd(CMD_READ_STATUS); |
| 344 | |
| 345 | if (__nand_data8() & 0x01) |
| 346 | { |
| 347 | serial_puts("Erase fail at "); |
| 348 | serial_put_hex(cur / ppb); |
| 349 | nand_mark_bad_4750(cur / ppb); |
| 350 | cur += ppb; |
| 351 | blk_num += Hand.nand_plane; |
| 352 | continue; |
| 353 | } |
| 354 | cur += ppb; |
| 355 | } |
| 356 | |
| 357 | if (wp_pin) |
| 358 | __gpio_clear_pin(wp_pin); |
| 359 | return cur; |
| 360 | } |
| 361 | |
| 362 | static int read_oob(void *buf, u32 size, u32 pg) |
| 363 | { |
| 364 | u32 i, coladdr, rowaddr; |
| 365 | |
| 366 | if (pagesize == 512) |
| 367 | coladdr = 0; |
| 368 | else |
| 369 | coladdr = pagesize; |
| 370 | |
| 371 | if (pagesize == 512) |
| 372 | /* Send READOOB command */ |
| 373 | __nand_cmd(CMD_READC); |
| 374 | else |
| 375 | /* Send READ0 command */ |
| 376 | __nand_cmd(CMD_READA); |
| 377 | |
| 378 | /* Send column address */ |
| 379 | __nand_addr(coladdr & 0xff); |
| 380 | if (pagesize != 512) |
| 381 | __nand_addr(coladdr >> 8); |
| 382 | |
| 383 | /* Send page address */ |
| 384 | rowaddr = pg; |
| 385 | for (i = 0; i < row; i++) { |
| 386 | __nand_addr(rowaddr & 0xff); |
| 387 | rowaddr >>= 8; |
| 388 | } |
| 389 | |
| 390 | /* Send READSTART command for 2048 or 4096 ps NAND */ |
| 391 | if (pagesize != 512) |
| 392 | __nand_cmd(CMD_CONFIRM); |
| 393 | |
| 394 | /* Wait for device ready */ |
| 395 | __nand_sync(); |
| 396 | |
| 397 | /* Read oob data */ |
| 398 | read_proc(buf, size); |
| 399 | |
| 400 | if (pagesize == 512) |
| 401 | __nand_sync(); |
| 402 | |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | static void bch_correct(unsigned char *dat, int idx) |
| 407 | { |
| 408 | int i, bit; // the 'bit' of i byte is error |
| 409 | i = (idx - 1) >> 3; |
| 410 | bit = (idx - 1) & 0x7; |
| 411 | dat[i] ^= (1 << bit); |
| 412 | } |
| 413 | |
| 414 | /* |
| 415 | * Read data <pagenum> pages from <startpage> page. |
| 416 | * Skip bad block if detected. |
| 417 | * HW ECC is used. |
| 418 | */ |
| 419 | u32 nand_read_4750(void *buf, u32 startpage, u32 pagenum, int option) |
| 420 | { |
| 421 | u32 j, k; |
| 422 | u32 cur_page, cur_blk, cnt, rowaddr, ecccnt; |
| 423 | u8 *tmpbuf, *p, flag = 0; |
| 424 | u32 oob_per_eccsize; |
| 425 | |
| 426 | ecccnt = pagesize / ECC_BLOCK; |
| 427 | oob_per_eccsize = eccpos / ecccnt; |
| 428 | |
| 429 | cur_page = startpage; |
| 430 | cnt = 0; |
| 431 | |
| 432 | tmpbuf = buf; |
| 433 | |
| 434 | while (cnt < pagenum) { |
| 435 | /* If this is the first page of the block, check for bad. */ |
| 436 | if ((cur_page % ppb) == 0) { |
| 437 | cur_blk = cur_page / ppb; |
| 438 | if (nand_check_block(cur_blk)) { |
| 439 | cur_page += ppb; // Bad block, set to next block |
| 440 | continue; |
| 441 | } |
| 442 | } |
| 443 | __nand_cmd(CMD_READA); |
| 444 | |
| 445 | __nand_addr(0); |
| 446 | if (pagesize != 512) |
| 447 | __nand_addr(0); |
| 448 | |
| 449 | rowaddr = cur_page; |
| 450 | for (j = 0; j < row; j++) { |
| 451 | __nand_addr(rowaddr & 0xff); |
| 452 | rowaddr >>= 8; |
| 453 | } |
| 454 | |
| 455 | if (pagesize != 512) |
| 456 | __nand_cmd(CMD_CONFIRM); |
| 457 | |
| 458 | __nand_sync(); |
| 459 | |
| 460 | /* Read data */ |
| 461 | read_proc((char *)tmpbuf, pagesize); |
| 462 | |
| 463 | /* read oob first */ |
| 464 | read_proc((char *)oob_buf, oobsize); |
| 465 | |
| 466 | for (j = 0; j < ecccnt; j++) { |
| 467 | u32 stat; |
| 468 | flag = 0; |
| 469 | REG_BCH_INTS = 0xffffffff; |
| 470 | |
| 471 | if (cur_page >= 16384 / pagesize) |
| 472 | { |
| 473 | if (bchbit == 8) |
| 474 | { |
| 475 | __ecc_decoding_8bit(); |
| 476 | par_size = 13; |
| 477 | } |
| 478 | else |
| 479 | { |
| 480 | __ecc_decoding_4bit(); |
| 481 | par_size = 7; |
| 482 | } |
| 483 | } |
| 484 | else |
| 485 | { |
| 486 | __ecc_decoding_8bit(); |
| 487 | par_size = 13; |
| 488 | } |
| 489 | |
| 490 | if (option != NO_OOB) |
| 491 | __ecc_cnt_dec(ECC_BLOCK + oob_per_eccsize + par_size); |
| 492 | else |
| 493 | __ecc_cnt_dec(ECC_BLOCK + par_size); |
| 494 | |
| 495 | for (k = 0; k < ECC_BLOCK; k++) { |
| 496 | REG_BCH_DR = tmpbuf[k]; |
| 497 | } |
| 498 | |
| 499 | if (option != NO_OOB) { |
| 500 | for (k = 0; k < oob_per_eccsize; k++) { |
| 501 | REG_BCH_DR = oob_buf[oob_per_eccsize * j + k]; |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | for (k = 0; k < par_size; k++) { |
| 506 | REG_BCH_DR = oob_buf[eccpos + j*par_size + k]; |
| 507 | if (oob_buf[eccpos + j*par_size + k] != 0xff) |
| 508 | flag = 1; |
| 509 | } |
| 510 | |
| 511 | /* Wait for completion */ |
| 512 | __ecc_decode_sync(); |
| 513 | __ecc_disable(); |
| 514 | /* Check decoding */ |
| 515 | stat = REG_BCH_INTS; |
| 516 | |
| 517 | if (stat & BCH_INTS_ERR) { |
| 518 | if (stat & BCH_INTS_UNCOR) { |
| 519 | if (flag) |
| 520 | { |
| 521 | dprintf("Uncorrectable ECC error occurred\n"); |
| 522 | handshake_PKT[3] = 1; |
| 523 | } |
| 524 | } |
| 525 | else { |
| 526 | handshake_PKT[3] = 0; |
| 527 | unsigned int errcnt = (stat & BCH_INTS_ERRC_MASK) >> BCH_INTS_ERRC_BIT; |
| 528 | switch (errcnt) { |
| 529 | case 8: |
| 530 | dprintf("correct 8th error\n"); |
| 531 | bch_correct(tmpbuf, (REG_BCH_ERR3 & BCH_ERR_INDEX_ODD_MASK) >> BCH_ERR_INDEX_ODD_BIT); |
| 532 | case 7: |
| 533 | dprintf("correct 7th error\n"); |
| 534 | bch_correct(tmpbuf, (REG_BCH_ERR3 & BCH_ERR_INDEX_EVEN_MASK) >> BCH_ERR_INDEX_EVEN_BIT); |
| 535 | case 6: |
| 536 | dprintf("correct 6th error\n"); |
| 537 | bch_correct(tmpbuf, (REG_BCH_ERR2 & BCH_ERR_INDEX_ODD_MASK) >> BCH_ERR_INDEX_ODD_BIT); |
| 538 | case 5: |
| 539 | dprintf("correct 5th error\n"); |
| 540 | bch_correct(tmpbuf, (REG_BCH_ERR2 & BCH_ERR_INDEX_EVEN_MASK) >> BCH_ERR_INDEX_EVEN_BIT); |
| 541 | case 4: |
| 542 | dprintf("correct 4th error\n"); |
| 543 | bch_correct(tmpbuf, (REG_BCH_ERR1 & BCH_ERR_INDEX_ODD_MASK) >> BCH_ERR_INDEX_ODD_BIT); |
| 544 | case 3: |
| 545 | dprintf("correct 3th error\n"); |
| 546 | bch_correct(tmpbuf, (REG_BCH_ERR1 & BCH_ERR_INDEX_EVEN_MASK) >> BCH_ERR_INDEX_EVEN_BIT); |
| 547 | case 2: |
| 548 | dprintf("correct 2th error\n"); |
| 549 | bch_correct(tmpbuf, (REG_BCH_ERR0 & BCH_ERR_INDEX_ODD_MASK) >> BCH_ERR_INDEX_ODD_BIT); |
| 550 | case 1: |
| 551 | dprintf("correct 1th error\n"); |
| 552 | bch_correct(tmpbuf, (REG_BCH_ERR0 & BCH_ERR_INDEX_EVEN_MASK) >> BCH_ERR_INDEX_EVEN_BIT); |
| 553 | break; |
| 554 | default: |
| 555 | dprintf("no error\n"); |
| 556 | break; |
| 557 | } |
| 558 | } |
| 559 | } |
| 560 | /* increment pointer */ |
| 561 | tmpbuf += ECC_BLOCK; |
| 562 | } |
| 563 | |
| 564 | switch (option) |
| 565 | { |
| 566 | case OOB_ECC: |
| 567 | for (j = 0; j < oobsize; j++) |
| 568 | tmpbuf[j] = oob_buf[j]; |
| 569 | tmpbuf += oobsize; |
| 570 | break; |
| 571 | case OOB_NO_ECC: |
| 572 | for (j = 0; j < par_size * ecccnt; j++) |
| 573 | oob_buf[eccpos + j] = 0xff; |
| 574 | for (j = 0; j < oobsize; j++) |
| 575 | tmpbuf[j] = oob_buf[j]; |
| 576 | tmpbuf += oobsize; |
| 577 | break; |
| 578 | case NO_OOB: |
| 579 | break; |
| 580 | } |
| 581 | |
| 582 | cur_page++; |
| 583 | cnt++; |
| 584 | } |
| 585 | return cur_page; |
| 586 | } |
| 587 | |
| 588 | u32 nand_program_4750(void *context, int spage, int pages, int option) |
| 589 | { |
| 590 | u32 i, j, cur_page, cur_blk, rowaddr; |
| 591 | u8 *tmpbuf; |
| 592 | u32 ecccnt; |
| 593 | u8 ecc_buf[256]; |
| 594 | u32 oob_per_eccsize; |
| 595 | int eccpos_sav = eccpos, bchbit_sav = bchbit, par_size_sav = par_size; |
| 596 | int spl_size = 16 * 1024 / pagesize; |
| 597 | |
| 598 | if (wp_pin) |
| 599 | __gpio_set_pin(wp_pin); |
| 600 | restart: |
| 601 | tmpbuf = (u8 *)context; |
| 602 | ecccnt = pagesize / ECC_BLOCK; |
| 603 | oob_per_eccsize = eccpos / ecccnt; |
| 604 | |
| 605 | i = 0; |
| 606 | cur_page = spage; |
| 607 | |
| 608 | while (i < pages) { |
| 609 | if (cur_page < spl_size) { |
| 610 | bchbit = 8; |
| 611 | eccpos = 3; |
| 612 | par_size = 13; |
| 613 | } else if (cur_page >= spl_size) { |
| 614 | bchbit = bchbit_sav; |
| 615 | eccpos = eccpos_sav; |
| 616 | par_size = par_size_sav; |
| 617 | } |
| 618 | |
| 619 | if ((cur_page % ppb) == 0) { /* First page of block, test BAD. */ |
| 620 | if (nand_check_block(cur_page / ppb)) { |
| 621 | cur_page += ppb; /* Bad block, set to next block */ |
| 622 | continue; |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | if ( option != NO_OOB ) //if NO_OOB do not perform vaild check! |
| 627 | { |
| 628 | for ( j = 0 ; j < pagesize + oobsize; j ++) |
| 629 | { |
| 630 | if (tmpbuf[j] != 0xff) |
| 631 | break; |
| 632 | } |
| 633 | if ( j == oobsize + pagesize ) |
| 634 | { |
| 635 | tmpbuf += ( pagesize + oobsize ) ; |
| 636 | i ++; |
| 637 | cur_page ++; |
| 638 | continue; |
| 639 | } |
| 640 | } |
| 641 | |
| 642 | if (pagesize == 512) |
| 643 | __nand_cmd(CMD_READA); |
| 644 | |
| 645 | __nand_cmd(CMD_SEQIN); |
| 646 | __nand_addr(0); |
| 647 | |
| 648 | if (pagesize != 512) |
| 649 | __nand_addr(0); |
| 650 | |
| 651 | rowaddr = cur_page; |
| 652 | for (j = 0; j < row; j++) { |
| 653 | __nand_addr(rowaddr & 0xff); |
| 654 | rowaddr >>= 8; |
| 655 | } |
| 656 | |
| 657 | /* write out data */ |
| 658 | for (j = 0; j < ecccnt; j++) { |
| 659 | volatile u8 *paraddr; |
| 660 | int k; |
| 661 | |
| 662 | paraddr = (volatile u8 *)BCH_PAR0; |
| 663 | |
| 664 | REG_BCH_INTS = 0xffffffff; |
| 665 | |
| 666 | if (bchbit == 8) |
| 667 | __ecc_encoding_8bit(); |
| 668 | else |
| 669 | __ecc_encoding_4bit(); |
| 670 | |
| 671 | /* Set BCHCNT.DEC_COUNT to data block size in bytes */ |
| 672 | if (option != NO_OOB) |
| 673 | __ecc_cnt_enc(ECC_BLOCK + oob_per_eccsize); |
| 674 | else |
| 675 | __ecc_cnt_enc(ECC_BLOCK); |
| 676 | |
| 677 | /* Write data in data area to BCH */ |
| 678 | for (k = 0; k < ECC_BLOCK; k++) { |
| 679 | REG_BCH_DR = tmpbuf[ECC_BLOCK * j + k]; |
| 680 | } |
| 681 | |
| 682 | /* Write file system information in oob area to BCH */ |
| 683 | if (option != NO_OOB) |
| 684 | { |
| 685 | for (k = 0; k < oob_per_eccsize; k++) { |
| 686 | REG_BCH_DR = tmpbuf[pagesize + oob_per_eccsize * j + k]; |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | __ecc_encode_sync(); |
| 691 | __ecc_disable(); |
| 692 | |
| 693 | /* Read PAR values */ |
| 694 | for (k = 0; k < par_size; k++) { |
| 695 | ecc_buf[j * par_size + k] = *paraddr++; |
| 696 | } |
| 697 | |
| 698 | write_proc((char *)&tmpbuf[ECC_BLOCK * j], ECC_BLOCK); |
| 699 | } |
| 700 | |
| 701 | switch (option) |
| 702 | { |
| 703 | case OOB_ECC: |
| 704 | case OOB_NO_ECC: |
| 705 | for (j = 0; j < eccpos; j++) { |
| 706 | oob_buf[j] = tmpbuf[pagesize + j]; |
| 707 | } |
| 708 | for (j = 0; j < ecccnt * par_size; j++) { |
| 709 | oob_buf[eccpos + j] = ecc_buf[j]; |
| 710 | } |
| 711 | tmpbuf += pagesize + oobsize; |
| 712 | break; |
| 713 | case NO_OOB: //bin image |
| 714 | for (j = 0; j < ecccnt * par_size; j++) { |
| 715 | oob_buf[eccpos + j] = ecc_buf[j]; |
| 716 | } |
| 717 | tmpbuf += pagesize; |
| 718 | break; |
| 719 | } |
| 720 | |
| 721 | /* write out oob buffer */ |
| 722 | write_proc((u8 *)oob_buf, oobsize); |
| 723 | |
| 724 | /* send program confirm command */ |
| 725 | __nand_cmd(CMD_PGPROG); |
| 726 | __nand_sync(); |
| 727 | |
| 728 | __nand_cmd(CMD_READ_STATUS); |
| 729 | |
| 730 | if (__nand_data8() & 0x01) /* page program error */ |
| 731 | { |
| 732 | serial_puts("Skip a write fail block\n"); |
| 733 | nand_erase_4750( 1, cur_page/ppb, 1); //force erase before |
| 734 | nand_mark_bad_4750(cur_page/ppb); |
| 735 | spage += ppb; |
| 736 | goto restart; |
| 737 | } |
| 738 | |
| 739 | i++; |
| 740 | cur_page++; |
| 741 | } |
| 742 | |
| 743 | if (wp_pin) |
| 744 | __gpio_clear_pin(wp_pin); |
| 745 | bchbit = bchbit_sav; |
| 746 | eccpos = eccpos_sav; |
| 747 | par_size = par_size_sav; |
| 748 | |
| 749 | return cur_page; |
| 750 | } |
| 751 | |
| 752 | static u32 nand_mark_bad_page(u32 page) |
| 753 | { |
| 754 | u8 badbuf[4096 + 128]; |
| 755 | u32 i; |
| 756 | |
| 757 | if (wp_pin) |
| 758 | __gpio_set_pin(wp_pin); |
| 759 | for (i = 0; i < pagesize + oobsize; i++) |
| 760 | badbuf[i] = 0x00; |
| 761 | //all set to 0x00 |
| 762 | |
| 763 | __nand_cmd(CMD_READA); |
| 764 | __nand_cmd(CMD_SEQIN); |
| 765 | |
| 766 | __nand_addr(0); |
| 767 | if (pagesize != 512) |
| 768 | __nand_addr(0); |
| 769 | for (i = 0; i < row; i++) { |
| 770 | __nand_addr(page & 0xff); |
| 771 | page >>= 8; |
| 772 | } |
| 773 | |
| 774 | write_proc((char *)badbuf, pagesize + oobsize); |
| 775 | __nand_cmd(CMD_PGPROG); |
| 776 | __nand_sync(); |
| 777 | |
| 778 | if (wp_pin) |
| 779 | __gpio_clear_pin(wp_pin); |
| 780 | return page; |
| 781 | } |
| 782 | |
| 783 | u32 nand_mark_bad_4750(int block) |
| 784 | { |
| 785 | u32 rowaddr; |
| 786 | |
| 787 | if ( bad_block_page >= ppb ) //absolute bad block mark! |
| 788 | { //mark four page! |
| 789 | rowaddr = block * ppb + 0; |
| 790 | nand_mark_bad_page(rowaddr); |
| 791 | |
| 792 | rowaddr = block * ppb + 1; |
| 793 | nand_mark_bad_page(rowaddr); |
| 794 | |
| 795 | rowaddr = block * ppb + ppb - 2; |
| 796 | nand_mark_bad_page(rowaddr); |
| 797 | |
| 798 | rowaddr = block * ppb + ppb - 1; |
| 799 | nand_mark_bad_page(rowaddr); |
| 800 | } |
| 801 | else //mark one page only |
| 802 | { |
| 803 | rowaddr = block * ppb + bad_block_page; |
| 804 | nand_mark_bad_page(rowaddr); |
| 805 | } |
| 806 | |
| 807 | return rowaddr; |
| 808 | } |
| 809 | |
| 810 | static int nand_data_write8(char *buf, int count) |
| 811 | { |
| 812 | int i; |
| 813 | u8 *p = (u8 *)buf; |
| 814 | for (i=0;i<count;i++) |
| 815 | __nand_data8() = *p++; |
| 816 | return 0; |
| 817 | } |
| 818 | |
| 819 | static int nand_data_write16(char *buf, int count) |
| 820 | { |
| 821 | int i; |
| 822 | u16 *p = (u16 *)buf; |
| 823 | for (i=0;i<count/2;i++) |
| 824 | __nand_data16() = *p++; |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | static int nand_data_read8(char *buf, int count) |
| 829 | { |
| 830 | int i; |
| 831 | u8 *p = (u8 *)buf; |
| 832 | for (i=0;i<count;i++) |
| 833 | *p++ = __nand_data8(); |
| 834 | return 0; |
| 835 | } |
| 836 | |
| 837 | static int nand_data_read16(char *buf, int count) |
| 838 | { |
| 839 | int i; |
| 840 | u16 *p = (u16 *)buf; |
| 841 | for (i=0;i<count/2;i++) |
| 842 | *p++ = __nand_data16(); |
| 843 | return 0; |
| 844 | } |
| 845 | |
