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Re: flash erase and bootblocks
- From: Andrew Lunn <andrew at lunn dot ch>
- To: Will Wagner <will_wagner at carallon dot com>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Wed, 11 May 2005 22:21:37 +0200
- Subject: Re: [ECOS] flash erase and bootblocks
- References: <427F303D.8000806@carallon.com>
On Mon, May 09, 2005 at 10:41:17AM +0100, Will Wagner wrote:
> Hi All,
>
> I have a question about support for smaller bootblock sectors when
> erasing/programming flash.
>
> I have a driver for AMD AM29DL323D flash chips all working nicely. These
> chips have 8 smaller sectors at the beginning of flash.
>
> The erase and program routines in flash_am29xxxx.inl have support for
> the smaller bootblocks. However the flash_erase function in flash.c
> doesn't support the bootblocks so if I try to erase just one of the
> smaller sectors it erases all of them at once.
>
> Anyone got any suggestions on how to get round this? Otherwise I guess
> I'll have to alter flash_erase to suit my needs.
Take a look at the flash_v2 branch in CVS. It has a new api which
should allow this to work much cleaner. There is a driver for AMD
devices, but i don't know if this particular device is supported. You
will need to check the sources.
Andrew
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