1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2017 exceet electronics GmbH 4 * 5 * Authors: 6 * Frieder Schrempf <frieder.schrempf@exceet.de> 7 * Boris Brezillon <boris.brezillon@bootlin.com> 8 */ 9 10 #ifndef __UBOOT__ 11 #include <linux/device.h> 12 #include <linux/kernel.h> 13 #endif 14 #include <linux/mtd/spinand.h> 15 16 #define SPINAND_MFR_WINBOND 0xEF 17 18 #define WINBOND_CFG_BUF_READ BIT(3) 19 20 static SPINAND_OP_VARIANTS(read_cache_variants, 21 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), 22 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), 23 SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), 24 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), 25 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), 26 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); 27 28 #ifdef CONFIG_SPI_NAND_WINBOND_CONT_READ 29 static SPINAND_OP_VARIANTS(read_cache_variants_cont, 30 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), 31 SPINAND_PAGE_READ_FROM_CACHE_X4_OP_3A(0, 1, NULL, 0), 32 SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), 33 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), 34 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), 35 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); 36 #endif 37 38 static SPINAND_OP_VARIANTS(write_cache_variants, 39 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), 40 SPINAND_PROG_LOAD(true, 0, NULL, 0)); 41 42 static SPINAND_OP_VARIANTS(update_cache_variants, 43 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), 44 SPINAND_PROG_LOAD(false, 0, NULL, 0)); 45 46 static int w25m02gv_ooblayout_ecc(struct mtd_info *mtd, int section, 47 struct mtd_oob_region *region) 48 { 49 if (section > 3) 50 return -ERANGE; 51 52 region->offset = (16 * section) + 8; 53 region->length = 8; 54 55 return 0; 56 } 57 58 static int w25m02gv_ooblayout_free(struct mtd_info *mtd, int section, 59 struct mtd_oob_region *region) 60 { 61 if (section > 3) 62 return -ERANGE; 63 64 region->offset = (16 * section) + 2; 65 region->length = 6; 66 67 return 0; 68 } 69 70 static const struct mtd_ooblayout_ops w25m02gv_ooblayout = { 71 .ecc = w25m02gv_ooblayout_ecc, 72 .rfree = w25m02gv_ooblayout_free, 73 }; 74 75 static int w25m02gv_select_target(struct spinand_device *spinand, 76 unsigned int target) 77 { 78 struct spi_mem_op op = SPI_MEM_OP(SPI_MEM_OP_CMD(0xc2, 1), 79 SPI_MEM_OP_NO_ADDR, 80 SPI_MEM_OP_NO_DUMMY, 81 SPI_MEM_OP_DATA_OUT(1, 82 spinand->scratchbuf, 83 1)); 84 85 *spinand->scratchbuf = target; 86 return spi_mem_exec_op(spinand->slave, &op); 87 } 88 89 static int w25n02kv_ooblayout_ecc(struct mtd_info *mtd, int section, 90 struct mtd_oob_region *region) 91 { 92 if (section) 93 return -ERANGE; 94 95 region->offset = 64; 96 region->length = 64; 97 98 return 0; 99 } 100 101 static int w25n02kv_ooblayout_free(struct mtd_info *mtd, int section, 102 struct mtd_oob_region *region) 103 { 104 if (section) 105 return -ERANGE; 106 107 /* Reserve 2 bytes for the BBM. */ 108 region->offset = 2; 109 region->length = 62; 110 111 return 0; 112 } 113 114 static const struct mtd_ooblayout_ops w25n02kv_ooblayout = { 115 .ecc = w25n02kv_ooblayout_ecc, 116 .rfree = w25n02kv_ooblayout_free, 117 }; 118 119 static int w25n02kv_ecc_get_status(struct spinand_device *spinand, 120 u8 status) 121 { 122 struct nand_device *nand = spinand_to_nand(spinand); 123 124 switch (status & STATUS_ECC_MASK) { 125 case STATUS_ECC_NO_BITFLIPS: 126 return 0; 127 128 case STATUS_ECC_UNCOR_ERROR: 129 return -EBADMSG; 130 131 case STATUS_ECC_HAS_BITFLIPS: 132 return 1; 133 134 default: 135 return nand->eccreq.strength; 136 } 137 138 return -EINVAL; 139 } 140 141 /* Another set for the same id[2] devices in one series */ 142 static const struct spinand_info winbond_spinand_table[] = { 143 SPINAND_INFO("W25M02GV", 144 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAB), 145 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 2), 146 NAND_ECCREQ(1, 512), 147 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 148 &write_cache_variants, 149 &update_cache_variants), 150 0, 151 SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL), 152 SPINAND_SELECT_TARGET(w25m02gv_select_target)), 153 SPINAND_INFO("W25N512GV", 154 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAA, 0x20), 155 NAND_MEMORG(1, 2048, 64, 64, 512, 1, 1, 1), 156 NAND_ECCREQ(1, 512), 157 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 158 &write_cache_variants, 159 &update_cache_variants), 160 0, 161 SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL), 162 SPINAND_SELECT_TARGET(w25m02gv_select_target)), 163 SPINAND_INFO("W25N01GV", 164 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAA, 0x21), 165 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), 166 NAND_ECCREQ(1, 512), 167 #ifdef CONFIG_SPI_NAND_WINBOND_CONT_READ 168 SPINAND_INFO_OP_VARIANTS(&read_cache_variants_cont, 169 &write_cache_variants, 170 &update_cache_variants), 171 #else 172 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 173 &write_cache_variants, 174 &update_cache_variants), 175 #endif 176 0, 177 SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL), 178 SPINAND_SELECT_TARGET(w25m02gv_select_target)), 179 SPINAND_INFO("W25N02KV", 180 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAA, 0x22), 181 NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1), 182 NAND_ECCREQ(8, 512), 183 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 184 &write_cache_variants, 185 &update_cache_variants), 186 0, 187 SPINAND_ECCINFO(&w25n02kv_ooblayout, 188 w25n02kv_ecc_get_status)), 189 SPINAND_INFO("W25N04KV", 190 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAA, 0x23), 191 NAND_MEMORG(1, 2048, 128, 64, 4096, 1, 1, 1), 192 NAND_ECCREQ(8, 512), 193 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 194 &write_cache_variants, 195 &update_cache_variants), 196 0, 197 SPINAND_ECCINFO(&w25n02kv_ooblayout, 198 w25n02kv_ecc_get_status)), 199 SPINAND_INFO("W25N01GW", 200 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBA, 0x21), 201 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), 202 NAND_ECCREQ(1, 512), 203 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 204 &write_cache_variants, 205 &update_cache_variants), 206 0, 207 SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL), 208 SPINAND_SELECT_TARGET(w25m02gv_select_target)), 209 SPINAND_INFO("W25N02KW", 210 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBA, 0x22), 211 NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1), 212 NAND_ECCREQ(8, 512), 213 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 214 &write_cache_variants, 215 &update_cache_variants), 216 0, 217 SPINAND_ECCINFO(&w25n02kv_ooblayout, 218 w25n02kv_ecc_get_status)), 219 SPINAND_INFO("W25N01KV", 220 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAE, 0x21), 221 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), 222 NAND_ECCREQ(4, 512), 223 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 224 &write_cache_variants, 225 &update_cache_variants), 226 0, 227 SPINAND_ECCINFO(&w25n02kv_ooblayout, 228 w25n02kv_ecc_get_status)), 229 SPINAND_INFO("W25N01JWZEIG", 230 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBC, 0x21), 231 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), 232 NAND_ECCREQ(1, 512), 233 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 234 &write_cache_variants, 235 &update_cache_variants), 236 SPINAND_HAS_QE_BIT, 237 SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL)), 238 SPINAND_INFO("W25N01KWZPIG", 239 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBE, 0x21), 240 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), 241 NAND_ECCREQ(4, 512), 242 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 243 &write_cache_variants, 244 &update_cache_variants), 245 0, 246 SPINAND_ECCINFO(&w25n02kv_ooblayout, w25n02kv_ecc_get_status)), 247 }; 248 249 static int winbond_spinand_init(struct spinand_device *spinand) 250 { 251 struct nand_device *nand = spinand_to_nand(spinand); 252 unsigned int i; 253 254 /* 255 * Make sure all dies are in buffer read mode and not continuous read 256 * mode. 257 */ 258 for (i = 0; i < nand->memorg.ntargets; i++) { 259 spinand_select_target(spinand, i); 260 spinand_upd_cfg(spinand, WINBOND_CFG_BUF_READ, 261 WINBOND_CFG_BUF_READ); 262 } 263 264 /* W25N01JWZEIG enable continuous read */ 265 #ifdef CONFIG_SPI_NAND_WINBOND_CONT_READ 266 if (spinand->id.data[1] == 0xaa && spinand->id.data[2] == 0x21) { 267 spinand->support_cont_read = true; 268 spinand_upd_cfg(spinand, CFG_BUF_ENABLE, 0); 269 printf("Support cont_read\n"); 270 } 271 #endif 272 273 return 0; 274 } 275 276 static const struct spinand_manufacturer_ops winbond_spinand_manuf_ops = { 277 .init = winbond_spinand_init, 278 }; 279 280 const struct spinand_manufacturer winbond_spinand_manufacturer = { 281 .id = SPINAND_MFR_WINBOND, 282 .name = "Winbond", 283 .chips = winbond_spinand_table, 284 .nchips = ARRAY_SIZE(winbond_spinand_table), 285 .ops = &winbond_spinand_manuf_ops, 286 }; 287