/* * Copyright (C) 2017 Free Electrons * Copyright (C) 2017 NextThing Co * * Author: Boris Brezillon <boris.brezillon@free-electrons.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include "internals.h" static void amd_nand_decode_id(struct nand_chip *chip) { struct mtd_info *mtd = nand_to_mtd(chip); nand_decode_ext_id(chip); /* * Check for Spansion/AMD ID + repeating 5th, 6th byte since * some Spansion chips have erasesize that conflicts with size * listed in nand_ids table. * Data sheet (5 byte ID): Spansion S30ML-P ORNAND (p.39) */ if (chip->id.data[4] != 0x00 && chip->id.data[5] == 0x00 && chip->id.data[6] == 0x00 && chip->id.data[7] == 0x00 && mtd->writesize == 512) { mtd->erasesize = 128 * 1024; mtd->erasesize <<= ((chip->id.data[3] & 0x03) << 1); } } static int amd_nand_init(struct nand_chip *chip) { if (nand_is_slc(chip)) chip->bbt_options |= NAND_BBT_SCAN2NDPAGE; return 0; } const struct nand_manufacturer_ops amd_nand_manuf_ops = { .detect = amd_nand_decode_id, .init = amd_nand_init, };