88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
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* File : mtdnor.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2012, Shanghai Real-Thread Technology Co., Ltd
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2018-8-30 heyuanjie the first version
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*/
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#include <drivers/mtdnor.h>
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#ifdef MTD_USING_NOR
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static int _nor_erase(rt_mtd_t *mtd, loff_t addr, size_t len)
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{
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rt_nor_t *nor;
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nor = (rt_nor_t *)mtd;
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return nor->ops->erase(nor, addr, len);
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}
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static int _nor_read(rt_mtd_t *mtd, loff_t from, struct mtd_io_desc *desc)
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{
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rt_nor_t *nor;
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int ret;
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nor = (rt_nor_t *)mtd;
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ret = nor->ops->read(nor, from, desc->datbuf, desc->datlen);
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if (ret > 0)
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{
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desc->datretlen = ret;
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ret = 0;
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}
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return ret;
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}
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static int _nor_write(rt_mtd_t *mtd, loff_t to, struct mtd_io_desc *desc)
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{
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rt_nor_t *nor;
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int ret;
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nor = (rt_nor_t *)mtd;
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ret = nor->ops->write(nor, to, desc->datbuf, desc->datlen);
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if (ret > 0)
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{
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desc->datretlen = ret;
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ret = 0;
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}
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return ret;
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}
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static const struct mtd_ops _ops =
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{
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_nor_erase,
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_nor_read,
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_nor_write,
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0,
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0
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};
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int rt_mtd_nor_init(rt_nor_t *nor, int blksize)
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{
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nor->parent.sector_size = 1;
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nor->parent.block_size = blksize;
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nor->parent.ops = &_ops;
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nor->parent.type = MTD_TYPE_NOR;
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nor->parent.oob_size = 0;
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return 0;
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}
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#endif
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