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- /* SPDX-License-Identifier: GPL-2.0+ */
- /*
- * NXP GPMI NAND flash driver
- *
- * Copyright (C) 2018 Toradex
- * Authors:
- * Stefan Agner <stefan.agner@toradex.com>
- */
- #include <linux/mtd/mtd.h>
- #include <asm/cache.h>
- #include <nand.h>
- #include <asm/mach-imx/dma.h>
- /**
- * @gf_len: The length of Galois Field. (e.g., 13 or 14)
- * @ecc_strength: A number that describes the strength of the ECC
- * algorithm.
- * @ecc_chunk0_size: The size, in bytes, of a first ECC chunk.
- * @ecc_chunkn_size: The size, in bytes, of a single ECC chunk after
- * the first chunk in the page.
- * @ecc_chunk_count: The number of ECC chunks in the page,
- * @block_mark_byte_offset: The byte offset in the ECC-based page view at
- * which the underlying physical block mark appears.
- * @block_mark_bit_offset: The bit offset into the ECC-based page view at
- * which the underlying physical block mark appears.
- * @ecc_for_meta: The flag to indicate if there is a dedicate ecc
- * for meta.
- */
- struct bch_geometry {
- unsigned int gf_len;
- unsigned int ecc_strength;
- unsigned int ecc_chunk0_size;
- unsigned int ecc_chunkn_size;
- unsigned int ecc_chunk_count;
- unsigned int block_mark_byte_offset;
- unsigned int block_mark_bit_offset;
- unsigned int ecc_for_meta; /* ECC for meta data */
- };
- struct mxs_nand_info {
- struct nand_chip chip;
- struct udevice *dev;
- unsigned int max_ecc_strength_supported;
- bool use_minimum_ecc;
- /* legacy bch geometry flag */
- bool legacy_bch_geometry;
- int cur_chip;
- uint32_t cmd_queue_len;
- uint32_t data_buf_size;
- struct bch_geometry bch_geometry;
- uint8_t *cmd_buf;
- uint8_t *data_buf;
- uint8_t *oob_buf;
- uint8_t marking_block_bad;
- uint8_t raw_oob_mode;
- struct mxs_gpmi_regs *gpmi_regs;
- struct mxs_bch_regs *bch_regs;
- /* Functions with altered behaviour */
- int (*hooked_read_oob)(struct mtd_info *mtd,
- loff_t from, struct mtd_oob_ops *ops);
- int (*hooked_write_oob)(struct mtd_info *mtd,
- loff_t to, struct mtd_oob_ops *ops);
- int (*hooked_block_markbad)(struct mtd_info *mtd,
- loff_t ofs);
- /* DMA descriptors */
- struct mxs_dma_desc **desc;
- uint32_t desc_index;
- /* Hardware BCH interface and randomizer */
- u32 en_randomizer;
- u32 writesize;
- u32 oobsize;
- u32 bch_flash0layout0;
- u32 bch_flash0layout1;
- };
- struct mxs_nand_layout {
- u32 nblocks;
- u32 meta_size;
- u32 data0_size;
- u32 ecc0;
- u32 datan_size;
- u32 eccn;
- u32 gf_len;
- };
- int mxs_nand_init_ctrl(struct mxs_nand_info *nand_info);
- int mxs_nand_init_spl(struct nand_chip *nand);
- int mxs_nand_setup_ecc(struct mtd_info *mtd);
- void mxs_nand_mode_fcb_62bit(struct mtd_info *mtd);
- void mxs_nand_mode_fcb_40bit(struct mtd_info *mtd);
- void mxs_nand_mode_normal(struct mtd_info *mtd);
- u32 mxs_nand_mark_byte_offset(struct mtd_info *mtd);
- u32 mxs_nand_mark_bit_offset(struct mtd_info *mtd);
- void mxs_nand_get_layout(struct mtd_info *mtd, struct mxs_nand_layout *l);
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