1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2005, Intec Automation Inc. 4 * Copyright (C) 2014, Freescale Semiconductor, Inc. 5 */ 6 7 #include <linux/mtd/spi-nor.h> 8 9 #include "core.h" 10 11 #define SPINOR_OP_MT_DTR_RD 0xfd /* Fast Read opcode in DTR mode */ 12 #define SPINOR_OP_MT_RD_ANY_REG 0x85 /* Read volatile register */ 13 #define SPINOR_OP_MT_WR_ANY_REG 0x81 /* Write volatile register */ 14 #define SPINOR_REG_MT_CFR0V 0x00 /* For setting octal DTR mode */ 15 #define SPINOR_REG_MT_CFR1V 0x01 /* For setting dummy cycles */ 16 #define SPINOR_MT_OCT_DTR 0xe7 /* Enable Octal DTR. */ 17 #define SPINOR_MT_EXSPI 0xff /* Enable Extended SPI (default) */ 18 19 static int spi_nor_micron_octal_dtr_enable(struct spi_nor *nor, bool enable) 20 { 21 struct spi_mem_op op; 22 u8 *buf = nor->bouncebuf; 23 int ret; 24 25 if (enable) { 26 /* Use 20 dummy cycles for memory array reads. */ 27 ret = spi_nor_write_enable(nor); 28 if (ret) 29 return ret; 30 31 *buf = 20; 32 op = (struct spi_mem_op) 33 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_MT_WR_ANY_REG, 1), 34 SPI_MEM_OP_ADDR(3, SPINOR_REG_MT_CFR1V, 1), 35 SPI_MEM_OP_NO_DUMMY, 36 SPI_MEM_OP_DATA_OUT(1, buf, 1)); 37 38 ret = spi_mem_exec_op(nor->spimem, &op); 39 if (ret) 40 return ret; 41 42 ret = spi_nor_wait_till_ready(nor); 43 if (ret) 44 return ret; 45 } 46 47 ret = spi_nor_write_enable(nor); 48 if (ret) 49 return ret; 50 51 if (enable) 52 *buf = SPINOR_MT_OCT_DTR; 53 else 54 *buf = SPINOR_MT_EXSPI; 55 56 op = (struct spi_mem_op) 57 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_MT_WR_ANY_REG, 1), 58 SPI_MEM_OP_ADDR(enable ? 3 : 4, 59 SPINOR_REG_MT_CFR0V, 1), 60 SPI_MEM_OP_NO_DUMMY, 61 SPI_MEM_OP_DATA_OUT(1, buf, 1)); 62 63 if (!enable) 64 spi_nor_spimem_setup_op(nor, &op, SNOR_PROTO_8_8_8_DTR); 65 66 ret = spi_mem_exec_op(nor->spimem, &op); 67 if (ret) 68 return ret; 69 70 /* Read flash ID to make sure the switch was successful. */ 71 op = (struct spi_mem_op) 72 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDID, 1), 73 SPI_MEM_OP_NO_ADDR, 74 SPI_MEM_OP_DUMMY(enable ? 8 : 0, 1), 75 SPI_MEM_OP_DATA_IN(round_up(nor->info->id_len, 2), 76 buf, 1)); 77 78 if (enable) 79 spi_nor_spimem_setup_op(nor, &op, SNOR_PROTO_8_8_8_DTR); 80 81 ret = spi_mem_exec_op(nor->spimem, &op); 82 if (ret) 83 return ret; 84 85 if (memcmp(buf, nor->info->id, nor->info->id_len)) 86 return -EINVAL; 87 88 return 0; 89 } 90 91 static void mt35xu512aba_default_init(struct spi_nor *nor) 92 { 93 nor->params->octal_dtr_enable = spi_nor_micron_octal_dtr_enable; 94 } 95 96 static void mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor) 97 { 98 /* Set the Fast Read settings. */ 99 nor->params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR; 100 spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR], 101 0, 20, SPINOR_OP_MT_DTR_RD, 102 SNOR_PROTO_8_8_8_DTR); 103 104 nor->cmd_ext_type = SPI_NOR_EXT_REPEAT; 105 nor->params->rdsr_dummy = 8; 106 nor->params->rdsr_addr_nbytes = 0; 107 108 /* 109 * The BFPT quad enable field is set to a reserved value so the quad 110 * enable function is ignored by spi_nor_parse_bfpt(). Make sure we 111 * disable it. 112 */ 113 nor->params->quad_enable = NULL; 114 } 115 116 static struct spi_nor_fixups mt35xu512aba_fixups = { 117 .default_init = mt35xu512aba_default_init, 118 .post_sfdp = mt35xu512aba_post_sfdp_fixup, 119 }; 120 121 static const struct flash_info micron_parts[] = { 122 { "mt35xu512aba", INFO(0x2c5b1a, 0, 128 * 1024, 512, 123 SECT_4K | USE_FSR | SPI_NOR_OCTAL_READ | 124 SPI_NOR_4B_OPCODES | SPI_NOR_OCTAL_DTR_READ | 125 SPI_NOR_OCTAL_DTR_PP | 126 SPI_NOR_IO_MODE_EN_VOLATILE) 127 .fixups = &mt35xu512aba_fixups}, 128 { "mt35xu02g", INFO(0x2c5b1c, 0, 128 * 1024, 2048, 129 SECT_4K | USE_FSR | SPI_NOR_OCTAL_READ | 130 SPI_NOR_4B_OPCODES) }, 131 }; 132 133 static const struct flash_info st_parts[] = { 134 { "n25q016a", INFO(0x20bb15, 0, 64 * 1024, 32, 135 SECT_4K | SPI_NOR_QUAD_READ) }, 136 { "n25q032", INFO(0x20ba16, 0, 64 * 1024, 64, 137 SPI_NOR_QUAD_READ) }, 138 { "n25q032a", INFO(0x20bb16, 0, 64 * 1024, 64, 139 SPI_NOR_QUAD_READ) }, 140 { "n25q064", INFO(0x20ba17, 0, 64 * 1024, 128, 141 SECT_4K | SPI_NOR_QUAD_READ) }, 142 { "n25q064a", INFO(0x20bb17, 0, 64 * 1024, 128, 143 SECT_4K | SPI_NOR_QUAD_READ) }, 144 { "n25q128a11", INFO(0x20bb18, 0, 64 * 1024, 256, 145 SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | 146 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | 147 SPI_NOR_4BIT_BP | SPI_NOR_BP3_SR_BIT6) }, 148 { "n25q128a13", INFO(0x20ba18, 0, 64 * 1024, 256, 149 SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | 150 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | 151 SPI_NOR_4BIT_BP | SPI_NOR_BP3_SR_BIT6) }, 152 { "mt25ql256a", INFO6(0x20ba19, 0x104400, 64 * 1024, 512, 153 SECT_4K | USE_FSR | SPI_NOR_DUAL_READ | 154 SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, 155 { "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512, SECT_4K | 156 USE_FSR | SPI_NOR_DUAL_READ | 157 SPI_NOR_QUAD_READ) }, 158 { "mt25qu256a", INFO6(0x20bb19, 0x104400, 64 * 1024, 512, 159 SECT_4K | USE_FSR | SPI_NOR_DUAL_READ | 160 SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, 161 { "n25q256ax1", INFO(0x20bb19, 0, 64 * 1024, 512, 162 SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) }, 163 { "mt25ql512a", INFO6(0x20ba20, 0x104400, 64 * 1024, 1024, 164 SECT_4K | USE_FSR | SPI_NOR_DUAL_READ | 165 SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, 166 { "n25q512ax3", INFO(0x20ba20, 0, 64 * 1024, 1024, 167 SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | 168 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | 169 SPI_NOR_4BIT_BP | SPI_NOR_BP3_SR_BIT6) }, 170 { "mt25qu512a", INFO6(0x20bb20, 0x104400, 64 * 1024, 1024, 171 SECT_4K | USE_FSR | SPI_NOR_DUAL_READ | 172 SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, 173 { "n25q512a", INFO(0x20bb20, 0, 64 * 1024, 1024, 174 SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | 175 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | 176 SPI_NOR_4BIT_BP | SPI_NOR_BP3_SR_BIT6) }, 177 { "n25q00", INFO(0x20ba21, 0, 64 * 1024, 2048, 178 SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | 179 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | 180 SPI_NOR_4BIT_BP | SPI_NOR_BP3_SR_BIT6 | 181 NO_CHIP_ERASE) }, 182 { "n25q00a", INFO(0x20bb21, 0, 64 * 1024, 2048, 183 SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | 184 NO_CHIP_ERASE) }, 185 { "mt25ql02g", INFO(0x20ba22, 0, 64 * 1024, 4096, 186 SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | 187 NO_CHIP_ERASE) }, 188 { "mt25qu02g", INFO(0x20bb22, 0, 64 * 1024, 4096, 189 SECT_4K | USE_FSR | SPI_NOR_DUAL_READ | 190 SPI_NOR_QUAD_READ | NO_CHIP_ERASE) }, 191 192 { "m25p05", INFO(0x202010, 0, 32 * 1024, 2, 0) }, 193 { "m25p10", INFO(0x202011, 0, 32 * 1024, 4, 0) }, 194 { "m25p20", INFO(0x202012, 0, 64 * 1024, 4, 0) }, 195 { "m25p40", INFO(0x202013, 0, 64 * 1024, 8, 0) }, 196 { "m25p80", INFO(0x202014, 0, 64 * 1024, 16, 0) }, 197 { "m25p16", INFO(0x202015, 0, 64 * 1024, 32, 0) }, 198 { "m25p32", INFO(0x202016, 0, 64 * 1024, 64, 0) }, 199 { "m25p64", INFO(0x202017, 0, 64 * 1024, 128, 0) }, 200 { "m25p128", INFO(0x202018, 0, 256 * 1024, 64, 0) }, 201 202 { "m25p05-nonjedec", INFO(0, 0, 32 * 1024, 2, 0) }, 203 { "m25p10-nonjedec", INFO(0, 0, 32 * 1024, 4, 0) }, 204 { "m25p20-nonjedec", INFO(0, 0, 64 * 1024, 4, 0) }, 205 { "m25p40-nonjedec", INFO(0, 0, 64 * 1024, 8, 0) }, 206 { "m25p80-nonjedec", INFO(0, 0, 64 * 1024, 16, 0) }, 207 { "m25p16-nonjedec", INFO(0, 0, 64 * 1024, 32, 0) }, 208 { "m25p32-nonjedec", INFO(0, 0, 64 * 1024, 64, 0) }, 209 { "m25p64-nonjedec", INFO(0, 0, 64 * 1024, 128, 0) }, 210 { "m25p128-nonjedec", INFO(0, 0, 256 * 1024, 64, 0) }, 211 212 { "m45pe10", INFO(0x204011, 0, 64 * 1024, 2, 0) }, 213 { "m45pe80", INFO(0x204014, 0, 64 * 1024, 16, 0) }, 214 { "m45pe16", INFO(0x204015, 0, 64 * 1024, 32, 0) }, 215 216 { "m25pe20", INFO(0x208012, 0, 64 * 1024, 4, 0) }, 217 { "m25pe80", INFO(0x208014, 0, 64 * 1024, 16, 0) }, 218 { "m25pe16", INFO(0x208015, 0, 64 * 1024, 32, SECT_4K) }, 219 220 { "m25px16", INFO(0x207115, 0, 64 * 1024, 32, SECT_4K) }, 221 { "m25px32", INFO(0x207116, 0, 64 * 1024, 64, SECT_4K) }, 222 { "m25px32-s0", INFO(0x207316, 0, 64 * 1024, 64, SECT_4K) }, 223 { "m25px32-s1", INFO(0x206316, 0, 64 * 1024, 64, SECT_4K) }, 224 { "m25px64", INFO(0x207117, 0, 64 * 1024, 128, 0) }, 225 { "m25px80", INFO(0x207114, 0, 64 * 1024, 16, 0) }, 226 }; 227 228 /** 229 * st_micron_set_4byte_addr_mode() - Set 4-byte address mode for ST and Micron 230 * flashes. 231 * @nor: pointer to 'struct spi_nor'. 232 * @enable: true to enter the 4-byte address mode, false to exit the 4-byte 233 * address mode. 234 * 235 * Return: 0 on success, -errno otherwise. 236 */ 237 static int st_micron_set_4byte_addr_mode(struct spi_nor *nor, bool enable) 238 { 239 int ret; 240 241 ret = spi_nor_write_enable(nor); 242 if (ret) 243 return ret; 244 245 ret = spi_nor_set_4byte_addr_mode(nor, enable); 246 if (ret) 247 return ret; 248 249 return spi_nor_write_disable(nor); 250 } 251 252 static void micron_st_default_init(struct spi_nor *nor) 253 { 254 nor->flags |= SNOR_F_HAS_LOCK; 255 nor->flags &= ~SNOR_F_HAS_16BIT_SR; 256 nor->params->quad_enable = NULL; 257 nor->params->set_4byte_addr_mode = st_micron_set_4byte_addr_mode; 258 } 259 260 static const struct spi_nor_fixups micron_st_fixups = { 261 .default_init = micron_st_default_init, 262 }; 263 264 const struct spi_nor_manufacturer spi_nor_micron = { 265 .name = "micron", 266 .parts = micron_parts, 267 .nparts = ARRAY_SIZE(micron_parts), 268 .fixups = µn_st_fixups, 269 }; 270 271 const struct spi_nor_manufacturer spi_nor_st = { 272 .name = "st", 273 .parts = st_parts, 274 .nparts = ARRAY_SIZE(st_parts), 275 .fixups = µn_st_fixups, 276 }; 277