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Re: Flash erase bugfix disabled by default for AT91?
- From: Øyvind Harboe <oyvind dot harboe at zylin dot com>
- To: Andrew Lunn <andrew at lunn dot ch>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Thu, 11 Nov 2004 12:00:36 +0100
- Subject: Re: [ECOS] Flash erase bugfix disabled by default for AT91?
- References: <1100167843.4761.5.camel@famine> <20041111104507.GM16435@lunn.ch>
On Thu, 2004-11-11 at 11:45, Andrew Lunn wrote:
> 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 AT91FR40162 comes with the AT49BV1604A/1614A, right?
The bugfix could be default for this case.
CYGHWR_DEVS_FLASH_ATMEL_AT49BV1604A
CYGHWR_DEVS_FLASH_ATMEL_AT49BV1614A
> 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
--
Øyvind Harboe
http://www.zylin.com
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