Tom, Make sure all your code and data has been relocated. When reading the CFI information, flash is in an unusable state. Brad
-----Original Message----- From: Tom Guilliams [mailto:tguilliams@sbs.com] Sent: Monday, May 05, 2003 6:29 PM To: u-boot-users@lists.sourceforge.net Subject: [U-Boot-Users] StrataFlash CFI Mode Hang?
I've ported the PPMC8260 strataflash.c driver to my board's E28F128J3A chip and was wondering if anyone's ever seen this -
As soon as the driver puts the chip in CFI mode (by writing 0x98 to offset 0x55 for 8-bit mode), something goes bad and my board freezes. This happens every time. I know that's vague but I'm still debugging what's really going on. It looks like some interrupt issue but I've disabled interrupts and it didn't help. The chip has a 16-bit portwidth but has been set in 8-bit mode and is on an 8-bit bus (Galileo asynch bus).
If I fill in the CFI info manual and skip the command to set the chip in CFI mode, everything's fine. It seems to be just when we issue the CFI mode command. I've been checking the CFI spec and nothing's clued me in. Anyone else seen this? When flash_init() gets called, we're already running from RAM. Just wondering, time to set up the BDI.
Tom
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