[U-Boot-Users] StrataFlash on PrPMC800

Brad Kemp Brad.Kemp at Seranoa.com
Tue May 13 20:41:26 CEST 2003


Try ppmc8260/strataflash.c it autodetects the chip and port width
Brad

	-----Original Message----- 
	From: Mark.Lightfoot at sita.aero [mailto:Mark.Lightfoot at sita.aero] 
	Sent: Tue 5/13/2003 2:13 PM 
	To: u-boot-users at lists.sourceforge.net 
	Cc: 
	Subject: [U-Boot-Users] StrataFlash on PrPMC800
	
	

	Hello,
	
	I've been working on a port of U-Boot for the Motorola PrPMC800 and I've
	come up against my first obstacle, CFI detection of the flash.  The board
	implements two Intel 28F128J3 devices which, according to Motorola
	documentation, are each 8 bits wide residing on a 16 bit wide bus.  I take
	that to mean they are interleaved to form a virtual 16 bit wide device.
	I've already taken care of mapping the devices into the CPU's address
	space.  I borrowed the source code for flash support from the EVB64260 but
	it didn't work.  It fails because it can determine the manufacture code
	
	Do any of the supported boards already support devices in a similar
	configuration?  Could the source code possibly be reused for the PrPMC800?
	
	I don't know anything about how CFI works so I'm trying to avoid doing it
	from scratch.  From the looks of it, it shouldn't be necessary to reinvent
	the wheel.
	
	But, if I've to start from scratch, anyone know of a good CFI tutorial.
	I've got the JEDEC docs but can make much of them yet.
	
	Regards,
	Mark.
	
	><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><
	Mark Lightfoot - Software Designer - SITA
	777 Walker's Line, Burlington, Ontario, Canada, L7N 2G1
	905-681-5575
	mark.lightfoot at sita.aero
	><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><
	
	
	
	
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