Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 2 | /* |
Benoît Thébaudeau | c154ecc | 2013-04-11 09:36:00 +0000 | [diff] [blame] | 3 | * S5PC100 OneNAND driver at U-Boot |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 4 | * |
| 5 | * Copyright (C) 2008-2009 Samsung Electronics |
| 6 | * Kyungmin Park <kyungmin.park@samsung.com> |
| 7 | * |
| 8 | * Implementation: |
| 9 | * Emulate the pseudo BufferRAM |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 10 | */ |
| 11 | |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 12 | #include <malloc.h> |
Mike Frysinger | 11d1a09 | 2012-04-09 13:39:55 +0000 | [diff] [blame] | 13 | #include <linux/compat.h> |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 14 | #include <linux/mtd/mtd.h> |
| 15 | #include <linux/mtd/onenand.h> |
Heiko Schocher | f5895d1 | 2014-06-24 10:10:04 +0200 | [diff] [blame] | 16 | #include <linux/mtd/flashchip.h> |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 17 | #include <linux/mtd/samsung_onenand.h> |
Simon Glass | bdd5f81 | 2023-09-14 18:21:46 -0600 | [diff] [blame] | 18 | #include <linux/printk.h> |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 19 | |
| 20 | #include <asm/io.h> |
Masahiro Yamada | 56a931c | 2016-09-21 11:28:55 +0900 | [diff] [blame] | 21 | #include <linux/errno.h> |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 22 | |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 23 | #define ONENAND_ERASE_STATUS 0x00 |
| 24 | #define ONENAND_MULTI_ERASE_SET 0x01 |
| 25 | #define ONENAND_ERASE_START 0x03 |
| 26 | #define ONENAND_UNLOCK_START 0x08 |
| 27 | #define ONENAND_UNLOCK_END 0x09 |
| 28 | #define ONENAND_LOCK_START 0x0A |
| 29 | #define ONENAND_LOCK_END 0x0B |
| 30 | #define ONENAND_LOCK_TIGHT_START 0x0C |
| 31 | #define ONENAND_LOCK_TIGHT_END 0x0D |
| 32 | #define ONENAND_UNLOCK_ALL 0x0E |
| 33 | #define ONENAND_OTP_ACCESS 0x12 |
| 34 | #define ONENAND_SPARE_ACCESS_ONLY 0x13 |
| 35 | #define ONENAND_MAIN_ACCESS_ONLY 0x14 |
| 36 | #define ONENAND_ERASE_VERIFY 0x15 |
| 37 | #define ONENAND_MAIN_SPARE_ACCESS 0x16 |
| 38 | #define ONENAND_PIPELINE_READ 0x4000 |
| 39 | |
Benoît Thébaudeau | c154ecc | 2013-04-11 09:36:00 +0000 | [diff] [blame] | 40 | #if defined(CONFIG_S5P) |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 41 | #define MAP_00 (0x0 << 26) |
| 42 | #define MAP_01 (0x1 << 26) |
| 43 | #define MAP_10 (0x2 << 26) |
| 44 | #define MAP_11 (0x3 << 26) |
| 45 | #endif |
| 46 | |
| 47 | /* read/write of XIP buffer */ |
| 48 | #define CMD_MAP_00(mem_addr) (MAP_00 | ((mem_addr) << 1)) |
| 49 | /* read/write to the memory device */ |
| 50 | #define CMD_MAP_01(mem_addr) (MAP_01 | (mem_addr)) |
| 51 | /* control special functions of the memory device */ |
| 52 | #define CMD_MAP_10(mem_addr) (MAP_10 | (mem_addr)) |
| 53 | /* direct interface(direct access) with the memory device */ |
| 54 | #define CMD_MAP_11(mem_addr) (MAP_11 | ((mem_addr) << 2)) |
| 55 | |
| 56 | struct s3c_onenand { |
| 57 | struct mtd_info *mtd; |
| 58 | void __iomem *base; |
| 59 | void __iomem *ahb_addr; |
| 60 | int bootram_command; |
| 61 | void __iomem *page_buf; |
| 62 | void __iomem *oob_buf; |
| 63 | unsigned int (*mem_addr)(int fba, int fpa, int fsa); |
| 64 | struct samsung_onenand *reg; |
| 65 | }; |
| 66 | |
| 67 | static struct s3c_onenand *onenand; |
| 68 | |
| 69 | static int s3c_read_cmd(unsigned int cmd) |
| 70 | { |
| 71 | return readl(onenand->ahb_addr + cmd); |
| 72 | } |
| 73 | |
| 74 | static void s3c_write_cmd(int value, unsigned int cmd) |
| 75 | { |
| 76 | writel(value, onenand->ahb_addr + cmd); |
| 77 | } |
| 78 | |
| 79 | /* |
| 80 | * MEM_ADDR |
| 81 | * |
| 82 | * fba: flash block address |
| 83 | * fpa: flash page address |
| 84 | * fsa: flash sector address |
| 85 | * |
| 86 | * return the buffer address on the memory device |
| 87 | * It will be combined with CMD_MAP_XX |
| 88 | */ |
Benoît Thébaudeau | c154ecc | 2013-04-11 09:36:00 +0000 | [diff] [blame] | 89 | #if defined(CONFIG_S5P) |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 90 | static unsigned int s3c_mem_addr(int fba, int fpa, int fsa) |
| 91 | { |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 92 | return (fba << 13) | (fpa << 7) | (fsa << 5); |
| 93 | } |
| 94 | #endif |
| 95 | |
| 96 | static void s3c_onenand_reset(void) |
| 97 | { |
| 98 | unsigned long timeout = 0x10000; |
| 99 | int stat; |
| 100 | |
| 101 | writel(ONENAND_MEM_RESET_COLD, &onenand->reg->mem_reset); |
| 102 | while (timeout--) { |
| 103 | stat = readl(&onenand->reg->int_err_stat); |
| 104 | if (stat & RST_CMP) |
| 105 | break; |
| 106 | } |
| 107 | stat = readl(&onenand->reg->int_err_stat); |
| 108 | writel(stat, &onenand->reg->int_err_ack); |
| 109 | |
| 110 | /* Clear interrupt */ |
| 111 | writel(0x0, &onenand->reg->int_err_ack); |
| 112 | /* Clear the ECC status */ |
| 113 | writel(0x0, &onenand->reg->ecc_err_stat); |
| 114 | } |
| 115 | |
| 116 | static unsigned short s3c_onenand_readw(void __iomem *addr) |
| 117 | { |
| 118 | struct onenand_chip *this = onenand->mtd->priv; |
| 119 | int reg = addr - this->base; |
| 120 | int word_addr = reg >> 1; |
| 121 | int value; |
| 122 | |
| 123 | /* It's used for probing time */ |
| 124 | switch (reg) { |
| 125 | case ONENAND_REG_MANUFACTURER_ID: |
| 126 | return readl(&onenand->reg->manufact_id); |
| 127 | case ONENAND_REG_DEVICE_ID: |
| 128 | return readl(&onenand->reg->device_id); |
| 129 | case ONENAND_REG_VERSION_ID: |
| 130 | return readl(&onenand->reg->flash_ver_id); |
| 131 | case ONENAND_REG_DATA_BUFFER_SIZE: |
| 132 | return readl(&onenand->reg->data_buf_size); |
| 133 | case ONENAND_REG_TECHNOLOGY: |
| 134 | return readl(&onenand->reg->tech); |
| 135 | case ONENAND_REG_SYS_CFG1: |
| 136 | return readl(&onenand->reg->mem_cfg); |
| 137 | |
| 138 | /* Used at unlock all status */ |
| 139 | case ONENAND_REG_CTRL_STATUS: |
| 140 | return 0; |
| 141 | |
| 142 | case ONENAND_REG_WP_STATUS: |
| 143 | return ONENAND_WP_US; |
| 144 | |
| 145 | default: |
| 146 | break; |
| 147 | } |
| 148 | |
| 149 | /* BootRAM access control */ |
| 150 | if (reg < ONENAND_DATARAM && onenand->bootram_command) { |
| 151 | if (word_addr == 0) |
| 152 | return readl(&onenand->reg->manufact_id); |
| 153 | if (word_addr == 1) |
| 154 | return readl(&onenand->reg->device_id); |
| 155 | if (word_addr == 2) |
| 156 | return readl(&onenand->reg->flash_ver_id); |
| 157 | } |
| 158 | |
| 159 | value = s3c_read_cmd(CMD_MAP_11(word_addr)) & 0xffff; |
| 160 | printk(KERN_INFO "s3c_onenand_readw: Illegal access" |
| 161 | " at reg 0x%x, value 0x%x\n", word_addr, value); |
| 162 | return value; |
| 163 | } |
| 164 | |
| 165 | static void s3c_onenand_writew(unsigned short value, void __iomem *addr) |
| 166 | { |
| 167 | struct onenand_chip *this = onenand->mtd->priv; |
| 168 | int reg = addr - this->base; |
| 169 | int word_addr = reg >> 1; |
| 170 | |
| 171 | /* It's used for probing time */ |
| 172 | switch (reg) { |
| 173 | case ONENAND_REG_SYS_CFG1: |
| 174 | writel(value, &onenand->reg->mem_cfg); |
| 175 | return; |
| 176 | |
| 177 | case ONENAND_REG_START_ADDRESS1: |
| 178 | case ONENAND_REG_START_ADDRESS2: |
| 179 | return; |
| 180 | |
| 181 | /* Lock/lock-tight/unlock/unlock_all */ |
| 182 | case ONENAND_REG_START_BLOCK_ADDRESS: |
| 183 | return; |
| 184 | |
| 185 | default: |
| 186 | break; |
| 187 | } |
| 188 | |
| 189 | /* BootRAM access control */ |
| 190 | if (reg < ONENAND_DATARAM) { |
| 191 | if (value == ONENAND_CMD_READID) { |
| 192 | onenand->bootram_command = 1; |
| 193 | return; |
| 194 | } |
| 195 | if (value == ONENAND_CMD_RESET) { |
| 196 | writel(ONENAND_MEM_RESET_COLD, |
| 197 | &onenand->reg->mem_reset); |
| 198 | onenand->bootram_command = 0; |
| 199 | return; |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | printk(KERN_INFO "s3c_onenand_writew: Illegal access" |
| 204 | " at reg 0x%x, value 0x%x\n", word_addr, value); |
| 205 | |
| 206 | s3c_write_cmd(value, CMD_MAP_11(word_addr)); |
| 207 | } |
| 208 | |
| 209 | static int s3c_onenand_wait(struct mtd_info *mtd, int state) |
| 210 | { |
| 211 | unsigned int flags = INT_ACT; |
| 212 | unsigned int stat, ecc; |
| 213 | unsigned long timeout = 0x100000; |
| 214 | |
| 215 | switch (state) { |
| 216 | case FL_READING: |
| 217 | flags |= BLK_RW_CMP | LOAD_CMP; |
| 218 | break; |
| 219 | case FL_WRITING: |
| 220 | flags |= BLK_RW_CMP | PGM_CMP; |
| 221 | break; |
| 222 | case FL_ERASING: |
| 223 | flags |= BLK_RW_CMP | ERS_CMP; |
| 224 | break; |
| 225 | case FL_LOCKING: |
| 226 | flags |= BLK_RW_CMP; |
| 227 | break; |
| 228 | default: |
| 229 | break; |
| 230 | } |
| 231 | |
| 232 | while (timeout--) { |
| 233 | stat = readl(&onenand->reg->int_err_stat); |
| 234 | if (stat & flags) |
| 235 | break; |
| 236 | } |
| 237 | |
| 238 | /* To get correct interrupt status in timeout case */ |
| 239 | stat = readl(&onenand->reg->int_err_stat); |
| 240 | writel(stat, &onenand->reg->int_err_ack); |
| 241 | |
| 242 | /* |
| 243 | * In the Spec. it checks the controller status first |
| 244 | * However if you get the correct information in case of |
| 245 | * power off recovery (POR) test, it should read ECC status first |
| 246 | */ |
| 247 | if (stat & LOAD_CMP) { |
| 248 | ecc = readl(&onenand->reg->ecc_err_stat); |
| 249 | if (ecc & ONENAND_ECC_4BIT_UNCORRECTABLE) { |
| 250 | printk(KERN_INFO "%s: ECC error = 0x%04x\n", |
| 251 | __func__, ecc); |
| 252 | mtd->ecc_stats.failed++; |
| 253 | return -EBADMSG; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | if (stat & (LOCKED_BLK | ERS_FAIL | PGM_FAIL | LD_FAIL_ECC_ERR)) { |
| 258 | printk(KERN_INFO "%s: controller error = 0x%04x\n", |
| 259 | __func__, stat); |
| 260 | if (stat & LOCKED_BLK) |
| 261 | printk(KERN_INFO "%s: it's locked error = 0x%04x\n", |
| 262 | __func__, stat); |
| 263 | |
| 264 | return -EIO; |
| 265 | } |
| 266 | |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | static int s3c_onenand_command(struct mtd_info *mtd, int cmd, |
| 271 | loff_t addr, size_t len) |
| 272 | { |
| 273 | struct onenand_chip *this = mtd->priv; |
| 274 | unsigned int *m, *s; |
| 275 | int fba, fpa, fsa = 0; |
| 276 | unsigned int mem_addr; |
| 277 | int i, mcount, scount; |
| 278 | int index; |
| 279 | |
| 280 | fba = (int) (addr >> this->erase_shift); |
| 281 | fpa = (int) (addr >> this->page_shift); |
| 282 | fpa &= this->page_mask; |
| 283 | |
| 284 | mem_addr = onenand->mem_addr(fba, fpa, fsa); |
| 285 | |
| 286 | switch (cmd) { |
| 287 | case ONENAND_CMD_READ: |
| 288 | case ONENAND_CMD_READOOB: |
| 289 | case ONENAND_CMD_BUFFERRAM: |
| 290 | ONENAND_SET_NEXT_BUFFERRAM(this); |
| 291 | default: |
| 292 | break; |
| 293 | } |
| 294 | |
| 295 | index = ONENAND_CURRENT_BUFFERRAM(this); |
| 296 | |
| 297 | /* |
| 298 | * Emulate Two BufferRAMs and access with 4 bytes pointer |
| 299 | */ |
| 300 | m = (unsigned int *) onenand->page_buf; |
| 301 | s = (unsigned int *) onenand->oob_buf; |
| 302 | |
| 303 | if (index) { |
| 304 | m += (this->writesize >> 2); |
| 305 | s += (mtd->oobsize >> 2); |
| 306 | } |
| 307 | |
| 308 | mcount = mtd->writesize >> 2; |
| 309 | scount = mtd->oobsize >> 2; |
| 310 | |
| 311 | switch (cmd) { |
| 312 | case ONENAND_CMD_READ: |
| 313 | /* Main */ |
| 314 | for (i = 0; i < mcount; i++) |
| 315 | *m++ = s3c_read_cmd(CMD_MAP_01(mem_addr)); |
| 316 | return 0; |
| 317 | |
| 318 | case ONENAND_CMD_READOOB: |
| 319 | writel(TSRF, &onenand->reg->trans_spare); |
| 320 | /* Main */ |
| 321 | for (i = 0; i < mcount; i++) |
| 322 | *m++ = s3c_read_cmd(CMD_MAP_01(mem_addr)); |
| 323 | |
| 324 | /* Spare */ |
| 325 | for (i = 0; i < scount; i++) |
| 326 | *s++ = s3c_read_cmd(CMD_MAP_01(mem_addr)); |
| 327 | |
| 328 | writel(0, &onenand->reg->trans_spare); |
| 329 | return 0; |
| 330 | |
| 331 | case ONENAND_CMD_PROG: |
| 332 | /* Main */ |
| 333 | for (i = 0; i < mcount; i++) |
| 334 | s3c_write_cmd(*m++, CMD_MAP_01(mem_addr)); |
| 335 | return 0; |
| 336 | |
| 337 | case ONENAND_CMD_PROGOOB: |
| 338 | writel(TSRF, &onenand->reg->trans_spare); |
| 339 | |
| 340 | /* Main - dummy write */ |
| 341 | for (i = 0; i < mcount; i++) |
| 342 | s3c_write_cmd(0xffffffff, CMD_MAP_01(mem_addr)); |
| 343 | |
| 344 | /* Spare */ |
| 345 | for (i = 0; i < scount; i++) |
| 346 | s3c_write_cmd(*s++, CMD_MAP_01(mem_addr)); |
| 347 | |
| 348 | writel(0, &onenand->reg->trans_spare); |
| 349 | return 0; |
| 350 | |
| 351 | case ONENAND_CMD_UNLOCK_ALL: |
| 352 | s3c_write_cmd(ONENAND_UNLOCK_ALL, CMD_MAP_10(mem_addr)); |
| 353 | return 0; |
| 354 | |
| 355 | case ONENAND_CMD_ERASE: |
| 356 | s3c_write_cmd(ONENAND_ERASE_START, CMD_MAP_10(mem_addr)); |
| 357 | return 0; |
| 358 | |
| 359 | case ONENAND_CMD_MULTIBLOCK_ERASE: |
| 360 | s3c_write_cmd(ONENAND_MULTI_ERASE_SET, CMD_MAP_10(mem_addr)); |
| 361 | return 0; |
| 362 | |
| 363 | case ONENAND_CMD_ERASE_VERIFY: |
| 364 | s3c_write_cmd(ONENAND_ERASE_VERIFY, CMD_MAP_10(mem_addr)); |
| 365 | return 0; |
| 366 | |
| 367 | default: |
| 368 | break; |
| 369 | } |
| 370 | |
| 371 | return 0; |
| 372 | } |
| 373 | |
| 374 | static unsigned char *s3c_get_bufferram(struct mtd_info *mtd, int area) |
| 375 | { |
| 376 | struct onenand_chip *this = mtd->priv; |
| 377 | int index = ONENAND_CURRENT_BUFFERRAM(this); |
| 378 | unsigned char *p; |
| 379 | |
| 380 | if (area == ONENAND_DATARAM) { |
| 381 | p = (unsigned char *) onenand->page_buf; |
| 382 | if (index == 1) |
| 383 | p += this->writesize; |
| 384 | } else { |
| 385 | p = (unsigned char *) onenand->oob_buf; |
| 386 | if (index == 1) |
| 387 | p += mtd->oobsize; |
| 388 | } |
| 389 | |
| 390 | return p; |
| 391 | } |
| 392 | |
| 393 | static int onenand_read_bufferram(struct mtd_info *mtd, loff_t addr, int area, |
| 394 | unsigned char *buffer, int offset, |
| 395 | size_t count) |
| 396 | { |
| 397 | unsigned char *p; |
| 398 | |
| 399 | p = s3c_get_bufferram(mtd, area); |
| 400 | memcpy(buffer, p + offset, count); |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | static int onenand_write_bufferram(struct mtd_info *mtd, loff_t addr, int area, |
| 405 | const unsigned char *buffer, int offset, |
| 406 | size_t count) |
| 407 | { |
| 408 | unsigned char *p; |
| 409 | |
| 410 | p = s3c_get_bufferram(mtd, area); |
| 411 | memcpy(p + offset, buffer, count); |
| 412 | return 0; |
| 413 | } |
| 414 | |
| 415 | static int s3c_onenand_bbt_wait(struct mtd_info *mtd, int state) |
| 416 | { |
| 417 | struct samsung_onenand *reg = (struct samsung_onenand *)onenand->base; |
| 418 | unsigned int flags = INT_ACT | LOAD_CMP; |
| 419 | unsigned int stat; |
| 420 | unsigned long timeout = 0x10000; |
| 421 | |
| 422 | while (timeout--) { |
| 423 | stat = readl(®->int_err_stat); |
| 424 | if (stat & flags) |
| 425 | break; |
| 426 | } |
| 427 | /* To get correct interrupt status in timeout case */ |
| 428 | stat = readl(&onenand->reg->int_err_stat); |
| 429 | writel(stat, &onenand->reg->int_err_ack); |
| 430 | |
| 431 | if (stat & LD_FAIL_ECC_ERR) { |
| 432 | s3c_onenand_reset(); |
| 433 | return ONENAND_BBT_READ_ERROR; |
| 434 | } |
| 435 | |
| 436 | if (stat & LOAD_CMP) { |
| 437 | int ecc = readl(&onenand->reg->ecc_err_stat); |
| 438 | if (ecc & ONENAND_ECC_4BIT_UNCORRECTABLE) { |
| 439 | s3c_onenand_reset(); |
| 440 | return ONENAND_BBT_READ_ERROR; |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | static void s3c_onenand_check_lock_status(struct mtd_info *mtd) |
| 448 | { |
| 449 | struct onenand_chip *this = mtd->priv; |
| 450 | unsigned int block, end; |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 451 | |
| 452 | end = this->chipsize >> this->erase_shift; |
| 453 | |
| 454 | for (block = 0; block < end; block++) { |
Anatolij Gustschin | fe3919d | 2011-11-19 13:12:10 +0000 | [diff] [blame] | 455 | s3c_read_cmd(CMD_MAP_01(onenand->mem_addr(block, 0, 0))); |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 456 | |
| 457 | if (readl(&onenand->reg->int_err_stat) & LOCKED_BLK) { |
| 458 | printf("block %d is write-protected!\n", block); |
| 459 | writel(LOCKED_BLK, &onenand->reg->int_err_ack); |
| 460 | } |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | static void s3c_onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, |
| 465 | size_t len, int cmd) |
| 466 | { |
| 467 | struct onenand_chip *this = mtd->priv; |
| 468 | int start, end, start_mem_addr, end_mem_addr; |
| 469 | |
| 470 | start = ofs >> this->erase_shift; |
| 471 | start_mem_addr = onenand->mem_addr(start, 0, 0); |
| 472 | end = start + (len >> this->erase_shift) - 1; |
| 473 | end_mem_addr = onenand->mem_addr(end, 0, 0); |
| 474 | |
| 475 | if (cmd == ONENAND_CMD_LOCK) { |
| 476 | s3c_write_cmd(ONENAND_LOCK_START, CMD_MAP_10(start_mem_addr)); |
| 477 | s3c_write_cmd(ONENAND_LOCK_END, CMD_MAP_10(end_mem_addr)); |
| 478 | } else { |
| 479 | s3c_write_cmd(ONENAND_UNLOCK_START, CMD_MAP_10(start_mem_addr)); |
| 480 | s3c_write_cmd(ONENAND_UNLOCK_END, CMD_MAP_10(end_mem_addr)); |
| 481 | } |
| 482 | |
| 483 | this->wait(mtd, FL_LOCKING); |
| 484 | } |
| 485 | |
| 486 | static void s3c_onenand_unlock_all(struct mtd_info *mtd) |
| 487 | { |
| 488 | struct onenand_chip *this = mtd->priv; |
| 489 | loff_t ofs = 0; |
| 490 | size_t len = this->chipsize; |
| 491 | |
| 492 | /* FIXME workaround */ |
| 493 | this->subpagesize = mtd->writesize; |
| 494 | mtd->subpage_sft = 0; |
| 495 | |
| 496 | if (this->options & ONENAND_HAS_UNLOCK_ALL) { |
| 497 | /* Write unlock command */ |
| 498 | this->command(mtd, ONENAND_CMD_UNLOCK_ALL, 0, 0); |
| 499 | |
| 500 | /* No need to check return value */ |
| 501 | this->wait(mtd, FL_LOCKING); |
| 502 | |
| 503 | /* Workaround for all block unlock in DDP */ |
| 504 | if (!ONENAND_IS_DDP(this)) { |
| 505 | s3c_onenand_check_lock_status(mtd); |
| 506 | return; |
| 507 | } |
| 508 | |
| 509 | /* All blocks on another chip */ |
| 510 | ofs = this->chipsize >> 1; |
| 511 | len = this->chipsize >> 1; |
| 512 | } |
| 513 | |
| 514 | s3c_onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); |
| 515 | s3c_onenand_check_lock_status(mtd); |
| 516 | } |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 517 | |
Lukasz Majewski | 9d7ba32 | 2011-11-09 11:25:32 +0100 | [diff] [blame] | 518 | int s5pc110_chip_probe(struct mtd_info *mtd) |
| 519 | { |
| 520 | return 0; |
| 521 | } |
| 522 | |
| 523 | int s5pc210_chip_probe(struct mtd_info *mtd) |
| 524 | { |
| 525 | return 0; |
| 526 | } |
| 527 | |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 528 | void s3c_onenand_init(struct mtd_info *mtd) |
| 529 | { |
| 530 | struct onenand_chip *this = mtd->priv; |
| 531 | u32 size = (4 << 10); /* 4 KiB */ |
| 532 | |
| 533 | onenand = malloc(sizeof(struct s3c_onenand)); |
| 534 | if (!onenand) |
| 535 | return; |
| 536 | |
| 537 | onenand->page_buf = malloc(size * sizeof(char)); |
| 538 | if (!onenand->page_buf) |
| 539 | return; |
| 540 | memset(onenand->page_buf, 0xff, size); |
| 541 | |
| 542 | onenand->oob_buf = malloc(128 * sizeof(char)); |
| 543 | if (!onenand->oob_buf) |
| 544 | return; |
| 545 | memset(onenand->oob_buf, 0xff, 128); |
| 546 | |
| 547 | onenand->mtd = mtd; |
| 548 | |
Benoît Thébaudeau | c154ecc | 2013-04-11 09:36:00 +0000 | [diff] [blame] | 549 | #if defined(CONFIG_S5P) |
Minkyu Kang | 52aa4dc | 2009-10-01 17:20:08 +0900 | [diff] [blame] | 550 | onenand->base = (void *)0xE7100000; |
| 551 | onenand->ahb_addr = (void *)0xB0000000; |
| 552 | #endif |
| 553 | onenand->mem_addr = s3c_mem_addr; |
| 554 | onenand->reg = (struct samsung_onenand *)onenand->base; |
| 555 | |
| 556 | this->read_word = s3c_onenand_readw; |
| 557 | this->write_word = s3c_onenand_writew; |
| 558 | |
| 559 | this->wait = s3c_onenand_wait; |
| 560 | this->bbt_wait = s3c_onenand_bbt_wait; |
| 561 | this->unlock_all = s3c_onenand_unlock_all; |
| 562 | this->command = s3c_onenand_command; |
| 563 | |
| 564 | this->read_bufferram = onenand_read_bufferram; |
| 565 | this->write_bufferram = onenand_write_bufferram; |
| 566 | |
| 567 | this->options |= ONENAND_RUNTIME_BADBLOCK_CHECK; |
| 568 | } |