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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2011-12-05 Bernard the first version
*/
/*
* COPYRIGHT (C) 2012, Shanghai Real Thread
*/
#include <drivers/mtd_nand.h>
#ifdef RT_USING_MTD_NAND
/**
* RT-Thread Generic Device Interface
*/
static rt_err_t _mtd_init(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t _mtd_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t _mtd_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_size_t _mtd_read(rt_device_t dev,
rt_off_t pos,
void *buffer,
rt_size_t size)
{
return size;
}
static rt_size_t _mtd_write(rt_device_t dev,
rt_off_t pos,
const void *buffer,
rt_size_t size)
{
return size;
}
static rt_err_t _mtd_control(rt_device_t dev, int cmd, void *args)
{
return RT_EOK;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops mtd_nand_ops =
{
_mtd_init,
_mtd_open,
_mtd_close,
_mtd_read,
_mtd_write,
_mtd_control
};
#endif
rt_err_t rt_mtd_nand_register_device(const char *name,
struct rt_mtd_nand_device *device)
{
rt_device_t dev;
dev = RT_DEVICE(device);
RT_ASSERT(dev != RT_NULL);
/* set device class and generic device interface */
dev->type = RT_Device_Class_MTD;
#ifdef RT_USING_DEVICE_OPS
dev->ops = &mtd_nand_ops;
#else
dev->init = _mtd_init;
dev->open = _mtd_open;
dev->read = _mtd_read;
dev->write = _mtd_write;
dev->close = _mtd_close;
dev->control = _mtd_control;
#endif
dev->rx_indicate = RT_NULL;
dev->tx_complete = RT_NULL;
/* register to RT-Thread device system */
return rt_device_register(dev, name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE);
}
#if defined(RT_MTD_NAND_DEBUG) && defined(RT_USING_FINSH)
#include <finsh.h>
#define __is_print(ch) ((unsigned int)((ch) - ' ') < 127u - ' ')
static void mtd_dump_hex(const rt_uint8_t *ptr, rt_size_t buflen)
{
unsigned char *buf = (unsigned char*)ptr;
int i, j;
for (i=0; i<buflen; i+=16)
{
rt_kprintf("%06x: ", i);
for (j=0; j<16; j++)
if (i+j < buflen)
rt_kprintf("%02x ", buf[i+j]);
else
rt_kprintf(" ");
rt_kprintf(" ");
for (j=0; j<16; j++)
if (i+j < buflen)
rt_kprintf("%c", __is_print(buf[i+j]) ? buf[i+j] : '.');
rt_kprintf("\n");
}
}
int mtd_nandid(const char* name)
{
struct rt_mtd_nand_device *nand;
nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
if (nand == RT_NULL)
{
rt_kprintf("no nand device found!\n");
return -RT_ERROR;
}
return rt_mtd_nand_read_id(nand);
}
FINSH_FUNCTION_EXPORT_ALIAS(mtd_nandid, nand_id, read ID - nandid(name));
int mtd_nand_read(const char* name, int block, int page)
{
rt_err_t result;
rt_uint8_t *page_ptr;
rt_uint8_t *oob_ptr;
struct rt_mtd_nand_device *nand;
nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
if (nand == RT_NULL)
{
rt_kprintf("no nand device found!\n");
return -RT_ERROR;
}
page_ptr = rt_malloc(nand->page_size + nand->oob_size);
if (page_ptr == RT_NULL)
{
rt_kprintf("out of memory!\n");
return -RT_ENOMEM;
}
oob_ptr = page_ptr + nand->page_size;
rt_memset(page_ptr, 0xff, nand->page_size + nand->oob_size);
/* calculate the page number */
page = block * nand->pages_per_block + page;
result = rt_mtd_nand_read(nand, page, page_ptr, nand->page_size,
oob_ptr, nand->oob_size);
rt_kprintf("read page, rc=%d\n", result);
mtd_dump_hex(page_ptr, nand->page_size);
mtd_dump_hex(oob_ptr, nand->oob_size);
rt_free(page_ptr);
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_read, nand_read, read page in nand - nand_read(name, block, page));
int mtd_nand_readoob(const char* name, int block, int page)
{
struct rt_mtd_nand_device *nand;
rt_uint8_t *oob_ptr;
nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
if (nand == RT_NULL)
{
rt_kprintf("no nand device found!\n");
return -RT_ERROR;
}
oob_ptr = rt_malloc(nand->oob_size);
if (oob_ptr == RT_NULL)
{
rt_kprintf("out of memory!\n");
return -RT_ENOMEM;
}
/* calculate the page number */
page = block * nand->pages_per_block + page;
rt_mtd_nand_read(nand, page, RT_NULL, nand->page_size,
oob_ptr, nand->oob_size);
mtd_dump_hex(oob_ptr, nand->oob_size);
rt_free(oob_ptr);
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_readoob, nand_readoob, read spare data in nand - nand_readoob(name, block, page));
int mtd_nand_write(const char* name, int block, int page)
{
rt_err_t result;
rt_uint8_t *page_ptr;
rt_uint8_t *oob_ptr;
rt_uint32_t index;
struct rt_mtd_nand_device *nand;
nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
if (nand == RT_NULL)
{
rt_kprintf("no nand device found!\n");
return -RT_ERROR;
}
page_ptr = rt_malloc(nand->page_size + nand->oob_size);
if (page_ptr == RT_NULL)
{
rt_kprintf("out of memory!\n");
return -RT_ENOMEM;
}
oob_ptr = page_ptr + nand->page_size;
/* prepare page data */
for (index = 0; index < nand->page_size; index ++)
{
page_ptr[index] = index & 0xff;
}
/* prepare oob data */
for (index = 0; index < nand->oob_size; index ++)
{
oob_ptr[index] = index & 0xff;
}
/* calculate the page number */
page = block * nand->pages_per_block + page;
result = rt_mtd_nand_write(nand, page, page_ptr, nand->page_size,
oob_ptr, nand->oob_size);
if (result != RT_MTD_EOK)
{
rt_kprintf("write page failed!, rc=%d\n", result);
}
rt_free(page_ptr);
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_write, nand_write, write dump data to nand - nand_write(name, block, page));
int mtd_nand_erase(const char* name, int block)
{
struct rt_mtd_nand_device *nand;
nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
if (nand == RT_NULL)
{
rt_kprintf("no nand device found!\n");
return -RT_ERROR;
}
return rt_mtd_nand_erase_block(nand, block);
}
FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_erase, nand_erase, nand_erase(name, block));
int mtd_nand_erase_all(const char* name)
{
rt_uint32_t index = 0;
struct rt_mtd_nand_device *nand;
nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
if (nand == RT_NULL)
{
rt_kprintf("no nand device found!\n");
return -RT_ERROR;
}
for (index = 0; index < (nand->block_end - nand->block_start); index ++)
{
rt_mtd_nand_erase_block(nand, index);
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_erase_all, nand_erase_all, erase all of nand device - nand_erase_all(name, block));
#endif
#endif
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