From: Andrew Kirilenko <icedank@gmx.net>
To: linux-kernel@vger.kernel.org
Subject: Re: Data storing
Date: Wed, 23 Apr 2003 15:28:08 +0300 [thread overview]
Message-ID: <200304231528.08720.icedank@gmx.net> (raw)
In-Reply-To: <Pine.LNX.4.53.0304230817340.22823@chaos>
Hello!
> > I need to make some checks (search for particular BIOS version) in the
> > very start of the kernel. I need to store this data (zero page is pretty
> > good for this, I think) and access it from arch/i386/boot/setup.S,
> > arch/i386/boot/compressed/misc.c and in some other places. Can somebody
> > suggest me good place to put check procedure and how to pass data?
>
> I use 0x000001f0 (absolute) for relocating virtual disk code
> for booting embedded systems. After Linux is up, the code remains
> untouched. This might be a good location because the BIOS doesn't
> use it during POST/boot and Linux (currently) leaves it alone.
> Of course, this doesn't mean that somebody will not destroy this
> area in the future (probably to spite you and me!!!).
Yes, I know about this area, as I wrote (Documentation/i386/zero-page.txt).
And I even know how to pass parameter from zero-page into kernel space
(setup.c). But I need to use this parm, I fetched, in both setup.S and misc.c
(see below). And I don't have any ideas about execute order of setup.S,
misc.c and setup.c.
Best regards,
Andrew.
next prev parent reply other threads:[~2003-04-23 12:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-23 11:59 Data storing Andrew Kirilenko
2003-04-23 12:22 ` Richard B. Johnson
2003-04-23 12:28 ` Andrew Kirilenko [this message]
2003-04-23 14:36 ` Randy.Dunlap
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