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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | // SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2024 SkyHigh Memory Limited * * Author: Takahiro Kuwano <takahiro.kuwano@infineon.com> * Co-Author: KR Kim <kr.kim@skyhighmemory.com> */ #ifndef __UBOOT__ #include <linux/device.h> #include <linux/kernel.h> #endif #include <linux/mtd/spinand.h> #define SPINAND_MFR_SKYHIGH 0x01 #define SKYHIGH_STATUS_ECC_1TO2_BITFLIPS (1 << 4) #define SKYHIGH_STATUS_ECC_3TO6_BITFLIPS (2 << 4) #define SKYHIGH_STATUS_ECC_UNCOR_ERROR (3 << 4) #define SKYHIGH_CONFIG_PROTECT_EN BIT(1) static SPINAND_OP_VARIANTS(read_cache_variants, SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(0, 4, NULL, 0, 0), SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0), SPINAND_PAGE_READ_FROM_CACHE_1S_2S_2S_OP(0, 2, NULL, 0, 0), SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0), SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0), SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0)); static SPINAND_OP_VARIANTS(write_cache_variants, SPINAND_PROG_LOAD_1S_1S_4S_OP(true, 0, NULL, 0), SPINAND_PROG_LOAD_1S_1S_1S_OP(true, 0, NULL, 0)); static SPINAND_OP_VARIANTS(update_cache_variants, SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0), SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0)); static int skyhigh_spinand_ooblayout_ecc(struct mtd_info *mtd, int section, struct mtd_oob_region *region) { /* ECC bytes are stored in hidden area. */ return -ERANGE; } static int skyhigh_spinand_ooblayout_free(struct mtd_info *mtd, int section, struct mtd_oob_region *region) { if (section) return -ERANGE; /* ECC bytes are stored in hidden area. Reserve 2 bytes for the BBM. */ region->offset = 2; region->length = mtd->oobsize - 2; return 0; } static const struct mtd_ooblayout_ops skyhigh_spinand_ooblayout = { .ecc = skyhigh_spinand_ooblayout_ecc, .rfree = skyhigh_spinand_ooblayout_free, }; static int skyhigh_spinand_ecc_get_status(struct spinand_device *spinand, u8 status) { switch (status & STATUS_ECC_MASK) { case STATUS_ECC_NO_BITFLIPS: return 0; case SKYHIGH_STATUS_ECC_UNCOR_ERROR: return -EBADMSG; case SKYHIGH_STATUS_ECC_1TO2_BITFLIPS: return 2; case SKYHIGH_STATUS_ECC_3TO6_BITFLIPS: return 6; default: break; } return -EINVAL; } static const struct spinand_info skyhigh_spinand_table[] = { SPINAND_INFO("S35ML01G301", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x15), NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), NAND_ECCREQ(6, 32), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), SPINAND_NO_RAW_ACCESS, SPINAND_ECCINFO(&skyhigh_spinand_ooblayout, skyhigh_spinand_ecc_get_status)), SPINAND_INFO("S35ML01G300", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x14), NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), NAND_ECCREQ(6, 32), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), SPINAND_NO_RAW_ACCESS, SPINAND_ECCINFO(&skyhigh_spinand_ooblayout, skyhigh_spinand_ecc_get_status)), SPINAND_INFO("S35ML02G300", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x25), NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1), NAND_ECCREQ(6, 32), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), SPINAND_NO_RAW_ACCESS, SPINAND_ECCINFO(&skyhigh_spinand_ooblayout, skyhigh_spinand_ecc_get_status)), SPINAND_INFO("S35ML04G300", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x35), NAND_MEMORG(1, 2048, 128, 64, 4096, 80, 2, 1, 1), NAND_ECCREQ(6, 32), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), SPINAND_NO_RAW_ACCESS, SPINAND_ECCINFO(&skyhigh_spinand_ooblayout, skyhigh_spinand_ecc_get_status)), }; static int skyhigh_spinand_init(struct spinand_device *spinand) { /* * Config_Protect_En (bit 1 in Block Lock register) must be set to 1 * before writing other bits. Do it here before core unlocks all blocks * by writing block protection bits. */ return spinand_write_reg_op(spinand, REG_BLOCK_LOCK, SKYHIGH_CONFIG_PROTECT_EN); } static const struct spinand_manufacturer_ops skyhigh_spinand_manuf_ops = { .init = skyhigh_spinand_init, }; const struct spinand_manufacturer skyhigh_spinand_manufacturer = { .id = SPINAND_MFR_SKYHIGH, .name = "SkyHigh", .chips = skyhigh_spinand_table, .nchips = ARRAY_SIZE(skyhigh_spinand_table), .ops = &skyhigh_spinand_manuf_ops, }; |