287 lines
7.1 KiB
C
287 lines
7.1 KiB
C
/*
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* File : mtd_core.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
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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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* 2011-12-05 Bernard the first version
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*/
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/*
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* COPYRIGHT (C) 2012, Shanghai Real Thread
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*/
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#include <drivers/mtd_nand.h>
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#ifdef RT_USING_MTD_NAND
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/**
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* RT-Thread Generic Device Interface
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*/
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static rt_err_t _mtd_init(rt_device_t dev)
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{
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return RT_EOK;
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}
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static rt_err_t _mtd_open(rt_device_t dev, rt_uint16_t oflag)
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{
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return RT_EOK;
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}
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static rt_err_t _mtd_close(rt_device_t dev)
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{
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return RT_EOK;
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}
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static rt_size_t _mtd_read(rt_device_t dev,
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rt_off_t pos,
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void *buffer,
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rt_size_t size)
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{
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return size;
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}
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static rt_size_t _mtd_write(rt_device_t dev,
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rt_off_t pos,
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const void *buffer,
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rt_size_t size)
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{
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return size;
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}
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static rt_err_t _mtd_control(rt_device_t dev, int cmd, void *args)
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{
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return RT_EOK;
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}
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rt_err_t rt_mtd_nand_register_device(const char *name,
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struct rt_mtd_nand_device *device)
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{
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rt_device_t dev;
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dev = RT_DEVICE(device);
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RT_ASSERT(dev != RT_NULL);
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/* set device class and generic device interface */
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dev->type = RT_Device_Class_MTD;
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dev->init = _mtd_init;
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dev->open = _mtd_open;
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dev->read = _mtd_read;
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dev->write = _mtd_write;
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dev->close = _mtd_close;
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dev->control = _mtd_control;
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dev->rx_indicate = RT_NULL;
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dev->tx_complete = RT_NULL;
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/* register to RT-Thread device system */
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return rt_device_register(dev, name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE);
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}
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#if defined(RT_MTD_NAND_DEBUG) && defined(RT_USING_FINSH)
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#include <finsh.h>
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#define __is_print(ch) ((unsigned int)((ch) - ' ') < 127u - ' ')
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static void mtd_dump_hex(const rt_uint8_t *ptr, rt_size_t buflen)
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{
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unsigned char *buf = (unsigned char*)ptr;
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int i, j;
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for (i=0; i<buflen; i+=16)
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{
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rt_kprintf("%06x: ", i);
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for (j=0; j<16; j++)
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if (i+j < buflen)
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rt_kprintf("%02x ", buf[i+j]);
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else
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rt_kprintf(" ");
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rt_kprintf(" ");
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for (j=0; j<16; j++)
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if (i+j < buflen)
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rt_kprintf("%c", __is_print(buf[i+j]) ? buf[i+j] : '.');
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rt_kprintf("\n");
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}
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}
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int mtd_nandid(const char* name)
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{
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struct rt_mtd_nand_device *nand;
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nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
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if (nand == RT_NULL)
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{
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rt_kprintf("no nand device found!\n");
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return -RT_ERROR;
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}
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return rt_mtd_nand_read_id(nand);
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}
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FINSH_FUNCTION_EXPORT_ALIAS(mtd_nandid, nand_id, read ID - nandid(name));
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int mtd_nand_read(const char* name, int block, int page)
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{
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rt_err_t result;
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rt_uint8_t *page_ptr;
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rt_uint8_t *oob_ptr;
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struct rt_mtd_nand_device *nand;
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nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
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if (nand == RT_NULL)
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{
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rt_kprintf("no nand device found!\n");
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return -RT_ERROR;
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}
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page_ptr = rt_malloc(nand->page_size + nand->oob_size);
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if (page_ptr == RT_NULL)
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{
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rt_kprintf("out of memory!\n");
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return -RT_ENOMEM;
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}
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oob_ptr = page_ptr + nand->page_size;
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rt_memset(page_ptr, 0xff, nand->page_size + nand->oob_size);
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/* calculate the page number */
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page = block * nand->pages_per_block + page;
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result = rt_mtd_nand_read(nand, page, page_ptr, nand->page_size,
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oob_ptr, nand->oob_size);
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rt_kprintf("read page, rc=%d\n", result);
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mtd_dump_hex(page_ptr, nand->page_size);
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mtd_dump_hex(oob_ptr, nand->oob_size);
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rt_free(page_ptr);
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return 0;
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}
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FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_read, nand_read, read page in nand - nand_read(name, block, page));
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int mtd_nand_readoob(const char* name, int block, int page)
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{
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struct rt_mtd_nand_device *nand;
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rt_uint8_t *oob_ptr;
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nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
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if (nand == RT_NULL)
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{
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rt_kprintf("no nand device found!\n");
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return -RT_ERROR;
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}
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oob_ptr = rt_malloc(nand->oob_size);
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if (oob_ptr == RT_NULL)
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{
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rt_kprintf("out of memory!\n");
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return -RT_ENOMEM;
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}
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/* calculate the page number */
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page = block * nand->pages_per_block + page;
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rt_mtd_nand_read(nand, page, RT_NULL, nand->page_size,
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oob_ptr, nand->oob_size);
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mtd_dump_hex(oob_ptr, nand->oob_size);
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rt_free(oob_ptr);
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return 0;
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}
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FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_readoob, nand_readoob, read spare data in nand - nand_readoob(name, block, page));
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int mtd_nand_write(const char* name, int block, int page)
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{
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rt_err_t result;
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rt_uint8_t *page_ptr;
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rt_uint8_t *oob_ptr;
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rt_uint32_t index;
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struct rt_mtd_nand_device *nand;
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nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
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if (nand == RT_NULL)
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{
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rt_kprintf("no nand device found!\n");
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return -RT_ERROR;
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}
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page_ptr = rt_malloc(nand->page_size + nand->oob_size);
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if (page_ptr == RT_NULL)
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{
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rt_kprintf("out of memory!\n");
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return -RT_ENOMEM;
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}
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oob_ptr = page_ptr + nand->page_size;
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/* prepare page data */
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for (index = 0; index < nand->page_size; index ++)
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{
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page_ptr[index] = index & 0xff;
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}
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/* prepare oob data */
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for (index = 0; index < nand->oob_size; index ++)
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{
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oob_ptr[index] = index & 0xff;
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}
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/* calculate the page number */
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page = block * nand->pages_per_block + page;
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result = rt_mtd_nand_write(nand, page, page_ptr, nand->page_size,
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oob_ptr, nand->oob_size);
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if (result != RT_MTD_EOK)
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{
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rt_kprintf("write page failed!, rc=%d\n", result);
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}
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rt_free(page_ptr);
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return 0;
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}
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FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_write, nand_write, write dump data to nand - nand_write(name, block, page));
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int mtd_nand_erase(const char* name, int block)
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{
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struct rt_mtd_nand_device *nand;
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nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
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if (nand == RT_NULL)
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{
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rt_kprintf("no nand device found!\n");
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return -RT_ERROR;
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}
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return rt_mtd_nand_erase_block(nand, block);
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}
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FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_erase, nand_erase, nand_erase(name, block));
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int mtd_nand_erase_all(const char* name)
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{
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rt_uint32_t index = 0;
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struct rt_mtd_nand_device *nand;
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nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
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if (nand == RT_NULL)
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{
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rt_kprintf("no nand device found!\n");
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return -RT_ERROR;
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}
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for (index = 0; index < (nand->block_end - nand->block_start); index ++)
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{
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rt_mtd_nand_erase_block(nand, index);
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}
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return 0;
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}
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FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_erase_all, nand_erase_all, erase all of nand device - nand_erase_all(name, block));
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#endif
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#endif
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