From: Ashish Ranjan <ranjan_ash2004@yahoo.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: ecos-discuss@ecos.sourceware.org
Subject: Re: [ECOS] Unable to Boot (RedBoot ) standalone
Date: Fri, 28 Oct 2005 07:55:00 -0000 [thread overview]
Message-ID: <20051028075519.21510.qmail@web35006.mail.mud.yahoo.com> (raw)
In-Reply-To: <20051028074431.GC8887@lunn.ch>
--- Andrew Lunn <andrew@lunn.ch> wrote:
> On Fri, Oct 28, 2005 at 12:27:16AM -0700, Ashish
> Ranjan wrote:
> > Hello All,
> > Please help me I have two problems rigth now and i
> am
> > new to ECOS.
> >
> > I am trying to port redboot on the Card having
> MPC860
> > and startup type is ROM.The card has the SDRAM
> > (0x00000000 - 0x00FFFFFF) and ROM (0x30000000 -
> > 0x303FFFFF).When I program the flash and run the
> > RedBoot.elf through lauterbach(ICD), I get the
> RedBoot
> > prompt on Hyperterminal. But when I power-on the
> Card
> > without the Emulator, i am unable to get the
> RedBoot
> > prompt(nothing happens).
> >
> > There is one more problem,it happens sometimes.In
> this
> > case,I am unable to the RedBoot prompt. The
> > IP(Instruction Pointer) move to an address
> 0x8001002C
> > and get halted as I have seen with the help of
> > debugger. Problem is : When a address is pushed
> into
> > the stack and when it is poped up the value is not
> the
> > same.Why it happens?what would be the reason?
>
> This sort of thing generally indicates the SDRAM
> controller
> initialization is broken. It could be your debugger
> is initializing
> the SDRAM controller and getting it correct. But
> when eCos does the
> initialization, it gets is wrong.
>
> Andrew
>
Thanks for your quick reply sir:
What is the solution means how can I initialize the
SDRAM controller? What would be the step which I
should follow?
And what about booting standalone.Is it due to same
reason?
Ashish
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next prev parent reply other threads:[~2005-10-28 7:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-28 7:27 Ashish Ranjan
2005-10-28 7:44 ` Andrew Lunn
2005-10-28 7:55 ` Ashish Ranjan [this message]
2005-10-28 8:31 ` Andrew Lunn
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