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Respect IRAM stack in diskio.c

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This commit is contained in:
shchmue 2019-05-31 12:57:11 -04:00
parent dae4c72910
commit abc2c85864
1 changed files with 7 additions and 21 deletions
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24
source/libs/fatfs/diskio.c
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@ -49,14 +49,14 @@ static sector_cache_t *sector_cache = (sector_cache_t*)0x40020000;
static u32 secindex = 0; static u32 secindex = 0;
DSTATUS disk_status ( DSTATUS disk_status (
BYTE pdrv /* Physical drive nmuber to identify the drive */ BYTE pdrv /* Physical drive number to identify the drive */
) )
{ {
return 0; return 0;
} }
DSTATUS disk_initialize ( DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber to identify the drive */ BYTE pdrv /* Physical drive number to identify the drive */
) )
{ {
return 0; return 0;
@ -125,7 +125,7 @@ out:;
} }
DRESULT disk_read ( DRESULT disk_read (
BYTE pdrv, /* Physical drive nmuber to identify the drive */ BYTE pdrv, /* Physical drive number to identify the drive */
BYTE *buff, /* Data buffer to store read data */ BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Start sector in LBA */ DWORD sector, /* Start sector in LBA */
UINT count /* Number of sectors to read */ UINT count /* Number of sectors to read */
@ -134,15 +134,7 @@ DRESULT disk_read (
switch (pdrv) switch (pdrv)
{ {
case 0: case 0:
if ((u32)buff >= DRAM_START)
return sdmmc_storage_read(&sd_storage, sector, count, buff) ? RES_OK : RES_ERROR; 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;
case 1:; case 1:;
__attribute__ ((aligned (16))) static u8 tweak[0x10]; __attribute__ ((aligned (16))) static u8 tweak[0x10];
@ -198,7 +190,7 @@ DRESULT disk_read (
} }
DRESULT disk_write ( DRESULT disk_write (
BYTE pdrv, /* Physical drive nmuber to identify the drive */ BYTE pdrv, /* Physical drive number to identify the drive */
const BYTE *buff, /* Data to be written */ const BYTE *buff, /* Data to be written */
DWORD sector, /* Start sector in LBA */ DWORD sector, /* Start sector in LBA */
UINT count /* Number of sectors to write */ UINT count /* Number of sectors to write */
@ -206,17 +198,11 @@ DRESULT disk_write (
{ {
if (pdrv == 1) if (pdrv == 1)
return RES_WRPRT; return RES_WRPRT;
if ((u32)buff >= DRAM_START)
return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR; return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
u8 *buf = (u8 *)SDMMC_UPPER_BUFFER; //TODO: define this somewhere.
memcpy(buf, buff, 512 * count);
if (sdmmc_storage_write(&sd_storage, sector, count, buf))
return RES_OK;
return RES_ERROR;
} }
DRESULT disk_ioctl ( DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */ BYTE pdrv, /* Physical drive number (0..) */
BYTE cmd, /* Control code */ BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */ void *buff /* Buffer to send/receive control data */
) )