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1// SPDX-License-Identifier: GPL-2.02/*3 * Author:4 * Chuanhong Guo <gch981213@gmail.com> - the main driver logic5 * Martin Kurbanov <mmkurbanov@sberdevices.ru> - OOB layout6 */7 8#include <linux/device.h>9#include <linux/kernel.h>10#include <linux/mtd/spinand.h>11 12/* ESMT uses GigaDevice 0xc8 JECDEC ID on some SPI NANDs */13#define SPINAND_MFR_ESMT_C8 0xc814 15static SPINAND_OP_VARIANTS(read_cache_variants,16 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),17 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),18 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),19 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));20 21static SPINAND_OP_VARIANTS(write_cache_variants,22 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),23 SPINAND_PROG_LOAD(true, 0, NULL, 0));24 25static SPINAND_OP_VARIANTS(update_cache_variants,26 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),27 SPINAND_PROG_LOAD(false, 0, NULL, 0));28 29/*30 * OOB spare area map (64 bytes)31 *32 * Bad Block Markers33 * filled by HW and kernel Reserved34 * | +-----------------------+-----------------------+35 * | | | |36 * | | OOB free data Area |non ECC protected |37 * | +-------------|-----+-----------------|-----+-----------------|-----+38 * | | | | | | | |39 * +-|---|----------+--|-----|--------------+--|-----|--------------+--|-----|--------------+40 * | | | section0 | | | section1 | | | section2 | | | section3 |41 * +-v-+-v-+---+----+--v--+--v--+-----+-----+--v--+--v--+-----+-----+--v--+--v--+-----+-----+42 * | | | | | | | | | | | | | | | | |43 * |0:1|2:3|4:7|8:15|16:17|18:19|20:23|24:31|32:33|34:35|36:39|40:47|48:49|50:51|52:55|56:63|44 * | | | | | | | | | | | | | | | | |45 * +---+---+-^-+--^-+-----+-----+--^--+--^--+-----+-----+--^--+--^--+-----+-----+--^--+--^--+46 * | | | | | | | |47 * | +----------------|-----+-----------------|-----+-----------------|-----+48 * | ECC Area|(Main + Spare) - filled|by ESMT NAND HW |49 * | | | |50 * +---------------------+-----------------------+-----------------------+51 * OOB ECC protected Area - not used due to52 * partial programming from some filesystems53 * (like JFFS2 with cleanmarkers)54 */55 56#define ESMT_OOB_SECTION_COUNT 457#define ESMT_OOB_SECTION_SIZE(nand) \58 (nanddev_per_page_oobsize(nand) / ESMT_OOB_SECTION_COUNT)59#define ESMT_OOB_FREE_SIZE(nand) \60 (ESMT_OOB_SECTION_SIZE(nand) / 2)61#define ESMT_OOB_ECC_SIZE(nand) \62 (ESMT_OOB_SECTION_SIZE(nand) - ESMT_OOB_FREE_SIZE(nand))63#define ESMT_OOB_BBM_SIZE 264 65static int f50l1g41lb_ooblayout_ecc(struct mtd_info *mtd, int section,66 struct mtd_oob_region *region)67{68 struct nand_device *nand = mtd_to_nanddev(mtd);69 70 if (section >= ESMT_OOB_SECTION_COUNT)71 return -ERANGE;72 73 region->offset = section * ESMT_OOB_SECTION_SIZE(nand) +74 ESMT_OOB_FREE_SIZE(nand);75 region->length = ESMT_OOB_ECC_SIZE(nand);76 77 return 0;78}79 80static int f50l1g41lb_ooblayout_free(struct mtd_info *mtd, int section,81 struct mtd_oob_region *region)82{83 struct nand_device *nand = mtd_to_nanddev(mtd);84 85 if (section >= ESMT_OOB_SECTION_COUNT)86 return -ERANGE;87 88 /*89 * Reserve space for bad blocks markers (section0) and90 * reserved bytes (sections 1-3)91 */92 region->offset = section * ESMT_OOB_SECTION_SIZE(nand) + 2;93 94 /* Use only 2 non-protected ECC bytes per each OOB section */95 region->length = 2;96 97 return 0;98}99 100static const struct mtd_ooblayout_ops f50l1g41lb_ooblayout = {101 .ecc = f50l1g41lb_ooblayout_ecc,102 .free = f50l1g41lb_ooblayout_free,103};104 105static const struct spinand_info esmt_c8_spinand_table[] = {106 SPINAND_INFO("F50L1G41LB",107 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x01, 0x7f,108 0x7f, 0x7f),109 NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),110 NAND_ECCREQ(1, 512),111 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,112 &write_cache_variants,113 &update_cache_variants),114 0,115 SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),116 SPINAND_INFO("F50D1G41LB",117 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x11, 0x7f,118 0x7f, 0x7f),119 NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),120 NAND_ECCREQ(1, 512),121 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,122 &write_cache_variants,123 &update_cache_variants),124 0,125 SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),126 SPINAND_INFO("F50D2G41KA",127 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x51, 0x7f,128 0x7f, 0x7f),129 NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),130 NAND_ECCREQ(8, 512),131 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,132 &write_cache_variants,133 &update_cache_variants),134 0,135 SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),136};137 138static const struct spinand_manufacturer_ops esmt_spinand_manuf_ops = {139};140 141const struct spinand_manufacturer esmt_c8_spinand_manufacturer = {142 .id = SPINAND_MFR_ESMT_C8,143 .name = "ESMT",144 .chips = esmt_c8_spinand_table,145 .nchips = ARRAY_SIZE(esmt_c8_spinand_table),146 .ops = &esmt_spinand_manuf_ops,147};148