38 lines
1.4 KiB
C
38 lines
1.4 KiB
C
/*
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* Copyright (C) 2015 PHYTEC Messtechnik GmbH,
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* Author: Stefan Christ <s.christ@phytec.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __NAND_MXS_H
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#define __NAND_MXS_H
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/*
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* Functions are definied in drivers/mtd/nand/nand_mxs.c. They are used to
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* calculate the ECC Strength, BadBlockMarkerByte and BadBlockMarkerStartBit
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* which are placed into the FCB structure. The i.MX6 ROM needs these
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* parameters to read the firmware from NAND.
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*
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* The parameters depends on the pagesize and oobsize of NAND chips and are
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* different for each combination. To avoid placing hardcoded values in the bbu
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* update handler code, the generic calculation from the driver code is used.
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*/
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uint32_t mxs_nand_get_ecc_strength(uint32_t page_data_size,
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uint32_t page_oob_size);
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uint32_t mxs_nand_mark_byte_offset(struct mtd_info *mtd);
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uint32_t mxs_nand_mark_bit_offset(struct mtd_info *mtd);
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#endif /* __NAND_MXS_H */
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