mirror of
https://github.com/CTCaer/hekate
synced 2024-11-08 04:46:35 +00:00
89 lines
3.4 KiB
C
89 lines
3.4 KiB
C
/*-----------------------------------------------------------------------*/
|
|
/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2016 */
|
|
/*-----------------------------------------------------------------------*/
|
|
/* If a working storage control module is available, it should be */
|
|
/* attached to the FatFs via a glue function rather than modifying it. */
|
|
/* This is an example of glue functions to attach various exsisting */
|
|
/* storage control modules to the FatFs module with a defined API. */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
#include <string.h>
|
|
#include "diskio.h" /* FatFs lower layer API */
|
|
#include "../../../../common/memory_map.h"
|
|
#include "../../storage/sdmmc.h"
|
|
|
|
extern sdmmc_storage_t sd_storage;
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get Drive Status */
|
|
/*-----------------------------------------------------------------------*/
|
|
DSTATUS disk_status (
|
|
BYTE pdrv /* Physical drive nmuber to identify the drive */
|
|
)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Inidialize a Drive */
|
|
/*-----------------------------------------------------------------------*/
|
|
DSTATUS disk_initialize (
|
|
BYTE pdrv /* Physical drive nmuber to identify the drive */
|
|
)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Read Sector(s) */
|
|
/*-----------------------------------------------------------------------*/
|
|
DRESULT disk_read (
|
|
BYTE pdrv, /* Physical drive nmuber to identify the drive */
|
|
BYTE *buff, /* Data buffer to store read data */
|
|
DWORD sector, /* Start sector in LBA */
|
|
UINT count /* Number of sectors to read */
|
|
)
|
|
{
|
|
// Ensure that buffer resides in DRAM and it's DMA aligned.
|
|
if (((u32)buff >= DRAM_START) && !((u32)buff % 8))
|
|
return sdmmc_storage_read(&sd_storage, sector, count, buff) ? RES_OK : RES_ERROR;
|
|
u8 *buf = (u8 *)SDMMC_UPPER_BUFFER;
|
|
if (sdmmc_storage_read(&sd_storage, sector, count, buf))
|
|
{
|
|
memcpy(buff, buf, 512 * count);
|
|
return RES_OK;
|
|
}
|
|
return RES_ERROR;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Write Sector(s) */
|
|
/*-----------------------------------------------------------------------*/
|
|
DRESULT disk_write (
|
|
BYTE pdrv, /* Physical drive nmuber to identify the drive */
|
|
const BYTE *buff, /* Data to be written */
|
|
DWORD sector, /* Start sector in LBA */
|
|
UINT count /* Number of sectors to write */
|
|
)
|
|
{
|
|
// Ensure that buffer resides in DRAM and it's DMA aligned.
|
|
if (((u32)buff >= DRAM_START) && !((u32)buff % 8))
|
|
return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
|
|
u8 *buf = (u8 *)SDMMC_UPPER_BUFFER;
|
|
memcpy(buf, buff, 512 * count);
|
|
if (sdmmc_storage_write(&sd_storage, sector, count, buf))
|
|
return RES_OK;
|
|
return RES_ERROR;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Miscellaneous Functions */
|
|
/*-----------------------------------------------------------------------*/
|
|
DRESULT disk_ioctl (
|
|
BYTE pdrv, /* Physical drive nmuber (0..) */
|
|
BYTE cmd, /* Control code */
|
|
void *buff /* Buffer to send/receive control data */
|
|
)
|
|
{
|
|
return RES_OK;
|
|
}
|