74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
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/*
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* Copyright (c) 2022-2024 Macronix International Co. LTD. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef NAND_BCH_H__
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#define NAND_BCH_H__
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#include "lib/spi_nand/spi_nand.h"
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#include "lib/spi_nand/bitops.h"
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struct nand_bch_control;
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#define CONFIG_NAND_ECC_BCH
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static inline int mtd_nand_has_bch(void) { return 1; }
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/*
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* Calculate BCH ecc code
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*/
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int nand_bch_calculate_ecc(struct nand_dev *nand, const unsigned char *dat,
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unsigned char *ecc_code);
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/*
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* Detect and correct bit errors
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*/
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int nand_bch_correct_data(struct nand_dev *nand, unsigned char *dat, unsigned char *read_ecc,
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unsigned char *calc_ecc);
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/*
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* Initialize BCH encoder/decoder
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*/
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struct nand_bch_control *
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nand_bch_init(struct nand_dev *nand, unsigned int eccsize,
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unsigned int eccbytes, struct NandEccLayout **ecclayout);
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/*
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* Release BCH encoder/decoder resources
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*/
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void nand_bch_free(struct nand_bch_control *nbc);
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int nand_read_ecc(struct nand_dev *nand, uint32_t page, uint8_t *buf, uint32_t len);
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int nand_read_ondie(struct nand_dev *nand, uint32_t page, uint8_t *buf, uint32_t len);
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int nand_write_ecc(struct nand_dev *nand, uint32_t page, uint8_t *buf, uint32_t len);
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int nand_write_ondie(struct nand_dev *nand, uint32_t page, uint8_t *buf, uint32_t len);
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/*
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* Function: Nand_Ecc_Init
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* Arguments: chip, pointer to an mxchip structure of SPI NAND device.
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* EccMode, ECC mode.
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* Return Value: RET_OK.
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* RET_ERR.
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* Description: This function initializes the software variables related
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* to ECC generation, ECC checking and writing ECC Bytes in spare Bytes.
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*/
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int Nand_Ecc_Init(struct nand_dev *nd, uint32_t EccMode);
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#endif /* __MTD_NAND_BCH_H__ */
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