1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2020-2021 Rockchip Electronics Co., Ltd 4 * 5 * Authors: 6 * Dingqiang Lin <jon.lin@rock-chips.com> 7 */ 8 9 #ifndef __UBOOT__ 10 #include <linux/device.h> 11 #include <linux/kernel.h> 12 #endif 13 #include <linux/mtd/spinand.h> 14 15 #define SPINAND_MFR_FMSH 0xA1 16 17 static SPINAND_OP_VARIANTS(read_cache_variants, 18 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), 19 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), 20 SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), 21 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), 22 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), 23 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); 24 25 static SPINAND_OP_VARIANTS(write_cache_variants, 26 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), 27 SPINAND_PROG_LOAD(true, 0, NULL, 0)); 28 29 static SPINAND_OP_VARIANTS(update_cache_variants, 30 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), 31 SPINAND_PROG_LOAD(false, 0, NULL, 0)); 32 33 static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section, 34 struct mtd_oob_region *region) 35 { 36 return -ERANGE; 37 } 38 39 static int fm25s01a_ooblayout_free(struct mtd_info *mtd, int section, 40 struct mtd_oob_region *region) 41 { 42 if (section) 43 return -ERANGE; 44 45 region->offset = 2; 46 region->length = 62; 47 48 return 0; 49 } 50 51 static const struct mtd_ooblayout_ops fm25s01a_ooblayout = { 52 .ecc = fm25s01a_ooblayout_ecc, 53 .rfree = fm25s01a_ooblayout_free, 54 }; 55 56 static int fm25s01_ooblayout_ecc(struct mtd_info *mtd, int section, 57 struct mtd_oob_region *region) 58 { 59 if (section) 60 return -ERANGE; 61 62 region->offset = 64; 63 region->length = 64; 64 65 return 0; 66 } 67 68 static int fm25s01_ooblayout_free(struct mtd_info *mtd, int section, 69 struct mtd_oob_region *region) 70 { 71 if (section) 72 return -ERANGE; 73 74 region->offset = 2; 75 region->length = 62; 76 77 return 0; 78 } 79 80 static const struct mtd_ooblayout_ops fm25s01_ooblayout = { 81 .ecc = fm25s01_ooblayout_ecc, 82 .rfree = fm25s01_ooblayout_free, 83 }; 84 85 /* 86 * ecc bits: 0xC0[4,6] 87 * [0b000], No bit errors were detected; 88 * [0b001] and [0b011], 1~6 Bit errors were detected and corrected. Not 89 * reach Flipping Bits; 90 * [0b101], Bit error count equals the bit flip 91 * detection threshold 92 * [0b010], Multiple bit errors were detected and 93 * not corrected. 94 * others, Reserved. 95 */ 96 static int fm25s01bi3_ecc_ecc_get_status(struct spinand_device *spinand, 97 u8 status) 98 { 99 struct nand_device *nand = spinand_to_nand(spinand); 100 u8 eccsr = (status & GENMASK(6, 4)) >> 4; 101 102 if (eccsr <= 1 || eccsr == 3) 103 return eccsr; 104 else if (eccsr == 5) 105 return nand->eccreq.strength; 106 else 107 return -EBADMSG; 108 } 109 110 static const struct spinand_info fmsh_spinand_table[] = { 111 SPINAND_INFO("FM25S01A", 112 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4), 113 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), 114 NAND_ECCREQ(1, 512), 115 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 116 &write_cache_variants, 117 &update_cache_variants), 118 0, 119 SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)), 120 SPINAND_INFO("FM25S02A", 121 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE5), 122 NAND_MEMORG(1, 2048, 64, 64, 2048, 2, 1, 1), 123 NAND_ECCREQ(1, 512), 124 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 125 &write_cache_variants, 126 &update_cache_variants), 127 SPINAND_HAS_QE_BIT, 128 SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)), 129 SPINAND_INFO("FM25S01", 130 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA1), 131 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), 132 NAND_ECCREQ(1, 512), 133 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 134 &write_cache_variants, 135 &update_cache_variants), 136 0, 137 SPINAND_ECCINFO(&fm25s01_ooblayout, NULL)), 138 SPINAND_INFO("FM25LS01", 139 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA5), 140 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), 141 NAND_ECCREQ(1, 512), 142 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 143 &write_cache_variants, 144 &update_cache_variants), 145 0, 146 SPINAND_ECCINFO(&fm25s01_ooblayout, NULL)), 147 SPINAND_INFO("FM25S01BI3", 148 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD4), 149 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), 150 NAND_ECCREQ(8, 512), 151 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 152 &write_cache_variants, 153 &update_cache_variants), 154 SPINAND_HAS_QE_BIT, 155 SPINAND_ECCINFO(&fm25s01_ooblayout, fm25s01bi3_ecc_ecc_get_status)), 156 }; 157 158 static const struct spinand_manufacturer_ops fmsh_spinand_manuf_ops = { 159 }; 160 161 const struct spinand_manufacturer fmsh_spinand_manufacturer = { 162 .id = SPINAND_MFR_FMSH, 163 .name = "FMSH", 164 .chips = fmsh_spinand_table, 165 .nchips = ARRAY_SIZE(fmsh_spinand_table), 166 .ops = &fmsh_spinand_manuf_ops, 167 }; 168