// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2016-2017 Micron Technology, Inc. * * Authors: * Peter Pan */ #include #include #include #define SPINAND_MFR_MICRON 0x2c #define MICRON_STATUS_ECC_MASK GENMASK(6, 4) #define MICRON_STATUS_ECC_NO_BITFLIPS (0 << 4) #define MICRON_STATUS_ECC_1TO3_BITFLIPS (1 << 4) #define MICRON_STATUS_ECC_4TO6_BITFLIPS (3 << 4) #define MICRON_STATUS_ECC_7TO8_BITFLIPS (5 << 4) #define MICRON_CFG_CR BIT(0) /* * As per datasheet, die selection is done by the 6th bit of Die * Select Register (Address 0xD0). */ #define MICRON_DIE_SELECT_REG 0xD0 #define MICRON_SELECT_DIE(x) ((x) << 6) static SPINAND_OP_VARIANTS(read_cache_variants, SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); static SPINAND_OP_VARIANTS(write_cache_variants, SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), SPINAND_PROG_LOAD(true, 0, NULL, 0)); static SPINAND_OP_VARIANTS(update_cache_variants, SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), SPINAND_PROG_LOAD(false, 0, NULL, 0)); static int micron_8_ooblayout_ecc(struct mtd_info *mtd, int section, struct mtd_oob_region *region) { if (section) return -ERANGE; region->offset = mtd->oobsize / 2; region->length = mtd->oobsize / 2; return 0; } static int micron_8_ooblayout_free(struct mtd_info *mtd, int section, struct mtd_oob_region *region) { if (section) return -ERANGE; /* Reserve 2 bytes for the BBM. */ region->offset = 2; region->length = (mtd->oobsize / 2) - 2; return 0; } static const struct mtd_ooblayout_ops micron_8_ooblayout = { .ecc = micron_8_ooblayout_ecc, .free = micron_8_ooblayout_free, }; static int micron_select_target(struct spinand_device *spinand, unsigned int target) { struct spi_mem_op op = SPINAND_SET_FEATURE_OP(MICRON_DIE_SELECT_REG, spinand->scratchbuf); if (target > 1) return -EINVAL; *spinand->scratchbuf = MICRON_SELECT_DIE(target); return spi_mem_exec_op(spinand->spimem, &op); } static int micron_8_ecc_get_status(struct spinand_device *spinand, u8 status) { switch (status & MICRON_STATUS_ECC_MASK) { case STATUS_ECC_NO_BITFLIPS: return 0; case STATUS_ECC_UNCOR_ERROR: return -EBADMSG; case MICRON_STATUS_ECC_1TO3_BITFLIPS: return 3; case MICRON_STATUS_ECC_4TO6_BITFLIPS: return 6; case MICRON_STATUS_ECC_7TO8_BITFLIPS: return 8; default: break; } return -EINVAL; } static const struct spinand_info micron_spinand_table[] = { /* M79A 2Gb 3.3V */ SPINAND_INFO("MT29F2G01ABAGD", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x24), NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), 0, SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M79A 2Gb 1.8V */ SPINAND_INFO("MT29F2G01ABBGD", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x25), NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), 0, SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M78A 1Gb 3.3V */ SPINAND_INFO("MT29F1G01ABAFD", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x14), NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), 0, SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M78A 1Gb 1.8V */ SPINAND_INFO("MT29F1G01ABAFD", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x15), NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), 0, SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M79A 4Gb 3.3V */ SPINAND_INFO("MT29F4G01ADAGD", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x36), NAND_MEMORG(1, 2048, 128, 64, 2048, 80, 2, 1, 2), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), 0, SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status), SPINAND_SELECT_TARGET(micron_select_target)), /* M70A 4Gb 3.3V */ SPINAND_INFO("MT29F4G01ABAFD", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x34), NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), SPINAND_HAS_CR_FEAT_BIT, SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M70A 4Gb 1.8V */ SPINAND_INFO("MT29F4G01ABBFD", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x35), NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), SPINAND_HAS_CR_FEAT_BIT, SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M70A 8Gb 3.3V */ SPINAND_INFO("MT29F8G01ADAFD", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x46), NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 2), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), SPINAND_HAS_CR_FEAT_BIT, SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status), SPINAND_SELECT_TARGET(micron_select_target)), /* M70A 8Gb 1.8V */ SPINAND_INFO("MT29F8G01ADBFD", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x47), NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 2), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), SPINAND_HAS_CR_FEAT_BIT, SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status), SPINAND_SELECT_TARGET(micron_select_target)), }; static int micron_spinand_init(struct spinand_device *spinand) { /* * M70A device series enable Continuous Read feature at Power-up, * which is not supported. Disable this bit to avoid any possible * failure. */ if (spinand->flags & SPINAND_HAS_CR_FEAT_BIT) return spinand_upd_cfg(spinand, MICRON_CFG_CR, 0); return 0; } static const struct spinand_manufacturer_ops micron_spinand_manuf_ops = { .init = micron_spinand_init, }; const struct spinand_manufacturer micron_spinand_manufacturer = { .id = SPINAND_MFR_MICRON, .name = "Micron", .chips = micron_spinand_table, .nchips = ARRAY_SIZE(micron_spinand_table), .ops = µn_spinand_manuf_ops, };