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Re: Redboot and edb7211
- To: Hugo Tyson <hmt at redhat dot com>
- Subject: Re: [ECOS] Redboot and edb7211
- From: Gary Thomas <gthomas at cambridge dot redhat dot com>
- Date: Fri, 20 Apr 2001 07:39:26 -0600 (MDT)
- Cc: ecos-discuss at sources dot redhat dot com
- Organization: Red Hat, Inc.
On 20-Apr-2001 Hugo Tyson wrote:
>
> Jonathan Larmour <jlarmour@redhat.com> writes:
>> Gary Thomas wrote:
>> > On 19-Apr-2001 Jonathan Larmour wrote:
>> > > Perhaps the message is the initial checksum error reported when no Flash
>> > > Image System has been created yet. If you do a "fis init" it may just go
>> > > away.
>> >
>> > These two items are not related in any way.
>> >
>> > * 'fis init' rebuilds only the FIS directory.
>> >
>> > * The warning about checksum failures is about the 'fconfig' database. One
>> > needs to run 'fconfig' to fix that.
>>
>> But presumably you can't do an fconfig until you've done an "fis init", so
>> both steps are required in order.
>
> Not sure. I think the fconfig stuff is placed where it's placed and that's
> that. "fis init" happens to make an entry that decribes where fconfig is
> placed, to help the user know what flash is used for what, and to keep the
> fis from using that flash itself. But the fconfig does not refer to the
> fis to determine what flash to use; it's not that way round.
>
Totally correct.
> If RedBoot startup reports a bad checksum, and the system appears to hang
> without a RedBoot> prompt, it's probably trying to use BOOTP to get an IP
> address. Either wait a while, or build a RedBoot with no networking
> included and try that, use it to initialize the flash then upgrade to one
> with net - no net => no BOOTP => no delay at startup.
>
Most likely this would make things seem to get "stuck". Wait for a little
while (maybe 30 seconds) and the RedBoot prompt should appear.
> Warning, if you have a valid fconfig block in flash, but a new
> configuration of RedBoot adds some new keys, you might have to explicitly
> erase (using "fis erase -f 0x503e0000 -l 0x10000" or whatever) the old
> fconfig data and reset it all to get the new keys to "take". Doesn't
> happen often that a new configuration changes things like this - except
> when debugging a whole new port and messing with extra fco settings - but
> mentioned just in case...
This should no longer be the case, with the newest 'fconfig' layout and
32 bit checksums. [It did use to be the case however]