xen-ia64-devel

[Top] [All Lists]

Re: [Xen-ia64-devel] Re: GFW and startup

from [Isaku Yamahata]

[Permanent Link][Original]

To:	tgingold@xxxxxxx
Subject:	Re: [Xen-ia64-devel] Re: GFW and startup
From:	Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
Date:	Fri, 26 Sep 2008 17:57:20 +0900
Cc:	xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date:	Fri, 26 Sep 2008 01:57:32 -0700
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to:	<1222415606.48dc94f6b6699@xxxxxxxxxxx>
List-help:	<mailto:xen-ia64-devel-request@lists.xensource.com?subject=help>
List-id:	Discussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>
List-post:	<mailto:xen-ia64-devel@lists.xensource.com>
List-subscribe:	<http://lists.xensource.com/mailman/listinfo/xen-ia64-devel>, <mailto:xen-ia64-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/mailman/listinfo/xen-ia64-devel>, <mailto:xen-ia64-devel-request@lists.xensource.com?subject=unsubscribe>
References:	<20080926024738.GC12164%yamahata@xxxxxxxxxxxxx> <1222415606.48dc94f6b6699@xxxxxxxxxxx>
Sender:	xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent:	Mutt/1.5.6i

On Fri, Sep 26, 2008 at 09:53:26AM +0200, tgingold@xxxxxxx wrote:
> Quoting Isaku Yamahata <yamahata@xxxxxxxxxxxxx>:
> 
> > Hi.
> >
> > I have a question about GFW startup procedure.
> >
> > Although I don't fully understand tianocore liking mechanism,
> > efi-vfirmware.hg/edk2-sparse/EdkXenPkg/SecMain/Ipf/startup.s
> > is compiled into startup.bin and is symbolic linked as ResetVect.cat.
> > Finally it is placed in ROM area and _start is executed in place.
> >
> > Is the above correct?
> 
> Yes, this is correct.
> 
> > If so, Is using [_stack_start, _stack_end) as stack correct?
> 
> Why not!  The ROM area is in RAM.
> We of course need a stack to execute C code.  On iron-board, we could use
> CAR (Cache As Ram).  But this is not possible with Xen.
> However, the ROM area is not write-only.  So we could use it.

Understood. Thanks for clarification.

-- 
yamahata

_______________________________________________
Xen-ia64-devel mailing list
Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-ia64-devel

[More with this subject...]

<Prev in Thread]	Current Thread	[Next in Thread>
[Xen-ia64-devel] GFW and startup, Isaku Yamahata [Xen-ia64-devel] Re: GFW and startup, tgingold Re: [Xen-ia64-devel] Re: GFW and startup, Isaku Yamahata <=

Previous by Date:	[Xen-ia64-devel] Re: GFW and startup, tgingold
Next by Date:	[Xen-ia64-devel] [PATCH 0/3] IA64: add cpufreq support, Yu, Ke
Previous by Thread:	[Xen-ia64-devel] Re: GFW and startup, tgingold
Next by Thread:	[Xen-ia64-devel] [IA64] Weekly benchmark results [ww38], KUWAMURA Shin'ya
Indexes:	[Date] [Thread] [Top] [All Lists]