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Re: Flash erase bugfix disabled by default for AT91?
- From: Andrew Lunn <andrew at lunn dot ch>
- To: ?yvind Harboe <oyvind dot harboe at zylin dot com>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Thu, 11 Nov 2004 11:45:07 +0100
- Subject: Re: [ECOS] Flash erase bugfix disabled by default for AT91?
- References: <1100167843.4761.5.camel@famine>
On Thu, Nov 11, 2004 at 11:10:44AM +0100, ?yvind Harboe wrote:
> If there is confidence that this
> CYGHWR_DEVS_FLASH_ATMEL_AT49XXXX_ERASE_BUG_WORKAROUND is implemented
> correctly, then surely 1 would be the sensible default?
Nope. Read the pdf on ATMELs web site. This problem applies to the
AT91FR40162 which is an ARM7TDMI with an embedded FLASH. Other devices
in the AT49XXXX family are not affected. The bug workaround adds
significant overhead which other devices do not need. So the correct
default is 0 and any HAL targeted to this processor can then enable
the workaround using a CDL requires statement.
Andrew
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