Re: USB-flash driver

[mike <mikelee@avantwave.com>]

Fillod Stephane wrote:

>
>>>   My situation is , to make my ARM-based board to be a USB mass 
>>> storage disk from outside view. I am using Motorola M9328MXL 
>>> development board with USB client.
>>>   
>>
>>
>> So your board is going to be an USB peripheral, right?
>>
>>  
>>
>>>   My question is how can i utilize mtd api to make the driver? Or 
>>> anyone done that before? Or anyone can give me some advises?
>>>   
>>
>>
>> Have a look at the fine Linux-USB Gadget project 
>> http://www.linux-usb.org/gadget
>> Your board should use the "File-backed Storage" driver, with the 
>> actual file
>> (mtdblock or mtdchar?) being accessed through the VFS.
>>
>> Once you find out the details, some feedback on the list will be much
>> appreciated, especially from the next person asking this soon-to-be a 
>> FAQ :-)
>>
>>
>> Best Regards,
>>
>>  
>>
Dear Fillod

   Actually, i do have a USB ram disk driver from the BSP of motorola, i 
also located the read write code to the driver, but it is RAM ,not flash.
     I have a guess and please fix me.
   Can I use the functions in <include/linux/mtd/CFI.h > to 
read/write/erase my chip (AM29PLD127 AMD CFI flash) DIRECTLY?

   I think this can speed up my process if i need to rewrite the gadget 
driver on M9328 chip

   Thanks for helping
best regard
Mike,Lee