1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0+ */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * NXP GPMI NAND flash driver 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2018 Toradex 6*4882a593Smuzhiyun * Authors: 7*4882a593Smuzhiyun * Stefan Agner <stefan.agner@toradex.com> 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include <linux/mtd/mtd.h> 11*4882a593Smuzhiyun #include <asm/cache.h> 12*4882a593Smuzhiyun #include <nand.h> 13*4882a593Smuzhiyun #include <asm/mach-imx/dma.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun /** 16*4882a593Smuzhiyun * @gf_len: The length of Galois Field. (e.g., 13 or 14) 17*4882a593Smuzhiyun * @ecc_strength: A number that describes the strength of the ECC 18*4882a593Smuzhiyun * algorithm. 19*4882a593Smuzhiyun * @ecc_chunk_size: The size, in bytes, of a single ECC chunk. Note 20*4882a593Smuzhiyun * the first chunk in the page includes both data and 21*4882a593Smuzhiyun * metadata, so it's a bit larger than this value. 22*4882a593Smuzhiyun * @ecc_chunk_count: The number of ECC chunks in the page, 23*4882a593Smuzhiyun * @block_mark_byte_offset: The byte offset in the ECC-based page view at 24*4882a593Smuzhiyun * which the underlying physical block mark appears. 25*4882a593Smuzhiyun * @block_mark_bit_offset: The bit offset into the ECC-based page view at 26*4882a593Smuzhiyun * which the underlying physical block mark appears. 27*4882a593Smuzhiyun */ 28*4882a593Smuzhiyun struct bch_geometry { 29*4882a593Smuzhiyun unsigned int gf_len; 30*4882a593Smuzhiyun unsigned int ecc_strength; 31*4882a593Smuzhiyun unsigned int ecc_chunk_size; 32*4882a593Smuzhiyun unsigned int ecc_chunk_count; 33*4882a593Smuzhiyun unsigned int block_mark_byte_offset; 34*4882a593Smuzhiyun unsigned int block_mark_bit_offset; 35*4882a593Smuzhiyun }; 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun struct mxs_nand_info { 38*4882a593Smuzhiyun struct nand_chip chip; 39*4882a593Smuzhiyun struct udevice *dev; 40*4882a593Smuzhiyun unsigned int max_ecc_strength_supported; 41*4882a593Smuzhiyun bool use_minimum_ecc; 42*4882a593Smuzhiyun int cur_chip; 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun uint32_t cmd_queue_len; 45*4882a593Smuzhiyun uint32_t data_buf_size; 46*4882a593Smuzhiyun struct bch_geometry bch_geometry; 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun uint8_t *cmd_buf; 49*4882a593Smuzhiyun uint8_t *data_buf; 50*4882a593Smuzhiyun uint8_t *oob_buf; 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun uint8_t marking_block_bad; 53*4882a593Smuzhiyun uint8_t raw_oob_mode; 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun struct mxs_gpmi_regs *gpmi_regs; 56*4882a593Smuzhiyun struct mxs_bch_regs *bch_regs; 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun /* Functions with altered behaviour */ 59*4882a593Smuzhiyun int (*hooked_read_oob)(struct mtd_info *mtd, 60*4882a593Smuzhiyun loff_t from, struct mtd_oob_ops *ops); 61*4882a593Smuzhiyun int (*hooked_write_oob)(struct mtd_info *mtd, 62*4882a593Smuzhiyun loff_t to, struct mtd_oob_ops *ops); 63*4882a593Smuzhiyun int (*hooked_block_markbad)(struct mtd_info *mtd, 64*4882a593Smuzhiyun loff_t ofs); 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun /* DMA descriptors */ 67*4882a593Smuzhiyun struct mxs_dma_desc **desc; 68*4882a593Smuzhiyun uint32_t desc_index; 69*4882a593Smuzhiyun }; 70*4882a593Smuzhiyun 71*4882a593Smuzhiyun int mxs_nand_init_ctrl(struct mxs_nand_info *nand_info); 72*4882a593Smuzhiyun int mxs_nand_init_spl(struct nand_chip *nand); 73*4882a593Smuzhiyun int mxs_nand_setup_ecc(struct mtd_info *mtd); 74