DESCRIPTION
 The 
flash driver provides a device-independent interface for using flash memory.
The following ioctl(2) operations are supported on /dev/flash:
- 
FLASH_BLOCK_ISBAD (struct flash_badblock_params)
- 
This command checks if a block is marked as bad.
- 
FLASH_BLOCK_MARKBAD (struct flash_badblock_params)
- 
This command marks a block as bad.
- 
FLASH_DUMP (struct flash_dump_params)
- 
This command dumps a block.
- 
FLASH_ERASE_BLOCK (struct flash_erase_params)
- 
This command erases one or more blocks.
- 
FLASH_GET_INFO (struct flash_info_params)
- 
This command acquires information about the flash device.