foundry27 : Post

Forum Topic - flash filesystem: (3 Items)

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handoko chendra

11/19/2010 5:44 PM

post75406

I wonder how to port a flash filesystem into QNX filesystem. Should it be connected to the io_block.so? and how can I 
download the filesystem source code?

Thank you

Dennis Kellly

11/20/2010 8:40 AM

post75425

Re: flash filesystem

Look at "etfs".  That is the filesystem for direct (bus) connected flash.  

You will probably want to download a bsp (similar to your board) and "port" the etfs driver source which links to the 
etfs library (libetfs.a).  The most important parameter is the "page size" (512, 2048, etc) -  make sure you start with 
source matching your pagesize.

handoko chendra

11/29/2010 7:19 PM

post76376

Re: flash filesystem

The Filesystem classes stated that Nonblock-oriented filesystems designed explicitly for the characteristics of flash 
memory devices. For NOR devices, use the FFS3 filesystem; for NAND, use ETFS so does etfs work for nor flash?

Is there a way to put debug code in the flash translation layer (FTL) which reside between filesystem and flash driver?

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