[ECOS] How to enable redboot trace/debug?

[Dmitry Ryzhkov <rdim_outside at softhome dot net>]

Does anybody tryed last days to load anything with redboot from ext2 fs?
I mean i386-pc, of course...

May be you know how to track checksum calculation while loading?
Thank you!

=== PREVIOUS DISCUSSION ===

Subject: Was: Re: [ECOS] RedBoot: Checksum failure while loading from ext2?
Date: Tue, 30 Oct 2001 12:32:47 +0100
From: Dmitry Ryzhkov <rdim_outside@softhome.net>
To: ecos-discuss@sourceware.cygnus.com


No, it isn't. I'm building RedBoot & hello, then placing RedBoot onto
diskette, halting the system, rebooting from diskette... So, fs isn't mounted
@ the moment and Linux doesn't work (of course)...

May be redboot assumes some extra data have to be arrived with filedata
while loading srec image through ttyS0? Or,
maybe, it loads some extra data while reading ext2-based file?

Is there any way to rebuild redboot so that it would display something useful
in respect to solve problem?

Thanks a lot,
Dmitry.

> Dmitry Ryzhkov wrote:
> > Does anybody know what's difference in loading of the same file using
> > ttyS0 and ext2fs - file?
> >
> > If i issue
> > RedBoot>lo -c 0 -m x
> > it works OK (I give hello.srec from host's side)
> >
> > Trying with the same file
> > RedBoot>lo -m disk hda2:myhome/hello.srec
> > causes:
> > *** Warning! Checksum failure - Addr: 012FED FF <> 00
> > and looks like stopped.
> >
> > What's wrong?
>
> Is this a live filesystem? i.e. have you mounted it readwrite in linux? If
> so, you'll have to unmount it.
>
> Jifl

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