From: Alice Hennessy <ahennessy@mvista.com>
To: David Woodhouse <dwmw2@infradead.org>
Cc: mark.langsdorf@amd.com, mtd@infradead.org
Subject: Re: CFI ident problems with AMD chips.
Date: Tue, 02 Jan 2001 15:27:03 -0800 [thread overview]
Message-ID: <3A5263C6.31F5D67D@mvista.com> (raw)
In-Reply-To: Pine.LNX.4.30.0101022228090.612-100000@imladris.demon.co.uk
David Woodhouse wrote:
> On Tue, 2 Jan 2001, Alice Hennessy wrote:
>
> > > Is there some way to tell the top-boot parts apart from the bottom-boot
> > > parts?
> >
> > In the Am29DL322D/323D/324D spec, there's a Top/Bottom Boot Sector Flag at
> > the end of the Primary Vendor-Specific Extended Query at address 4F (word mode)
> >
> > where 02 = bottom, 03 = top. I haven't tried it yet.
>
> Ah - hadn't found that bit, thanks. I'll poke at it in the morning.
>
> So, are the chips violating the CFI spec by recording the blocks in a
> strange order, or does the CFI spec not actually guarantee an _ordering_
> on the erase regions? It's not clear which is the case - either way,
> _someone_ seems to be on crack here.
>
> --
> dwmw2
I don't see any specific language that states that the regions have to be in order
(too obvious to mention).
BTW, I tried it and it gives the correct value for my top boot device.
Alice
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next prev parent reply other threads:[~2001-01-02 23:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-12-22 16:12 CFI ident problems with AMD chips David Woodhouse
2000-12-25 11:44 ` Nick Ivanter
2000-12-25 11:59 ` David Woodhouse
2001-01-02 18:53 ` Alice Hennessy
2001-01-02 22:30 ` David Woodhouse
2001-01-02 23:27 ` Alice Hennessy [this message]
2001-01-02 23:29 ` David Woodhouse
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