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RE: Help with booting Linux off my Redboot prompt
- From: "Mukund JB." <mukundjb at esntechnologies dot co dot in>
- To: "Krishna Ganugapati" <krishnag at marakicorp dot com>, "Nickolay" <nickolay at protei dot ru>
- Cc: <ecos-discuss at ecos dot sourceware dot org>
- Date: Wed, 23 Feb 2005 11:05:22 +0530
- Subject: RE: [ECOS] Help with booting Linux off my Redboot prompt
hello krishna,
I have posted the same mail to the eCos maillists but there seems no response.
I have a set of silly questions? Please try to help by answering these questions transferring any related info to me.
Ques1 :
how does eCos work on Linux?
Is eCos using Linux Headers? If not, why does eCos need Linux? S
?
Ques2 :
????????I have the eCos Source code. I found a no clean installation document about installing the eCos on Linux.
????????Can some one provide a clean document which says how to install eCos on Linux?
I have gone thorough the eCos documentation(eCos user guide), I found answers for these questions no where.
Thanks if the help in advance.
Regards,
Mukund jampala
-----Original Message-----
From: ecos-discuss-owner@ecos.sourceware.org [mailto:ecos-discuss-owner@ecos.sourceware.org] On Behalf Of Krishna Ganugapati
Sent: Tuesday, February 22, 2005 11:26 PM
To: Nickolay
Cc: ecos-discuss@ecos.sourceware.org
Subject: Re: [ECOS] Help with booting Linux off my Redboot prompt
Thanks Nickolay
I did specify all four parameters to "exec" and while things do not dump
core or anything -- it looks like its hanging somewhere in the Linux
startup. I understand this may be the wrong place to pose the question, but
has anyone used the BDI2000 to debug a Linux target after it has been
invoked from Redboot using exec.
The BDI2000 documentation is pretty sparse.
I also discovered that the base address for the IXDP425 is 0x00600000 after
greping through the sources.
My board only has UART 0 and I'm suspecting that it has something to do with
how the Linux console works. I get no output to my console window once I
invoke exec...
I need to figure out how to debug a Linux target under Redboot using a
BDI2000
Thanks
Krishna
----- Original Message -----
From: "Nickolay" <nickolay@protei.ru>
To: "Krishna Ganugapati" <krishnag@marakicorp.com>
Cc: <ecos-discuss@ecos.sourceware.org>
Sent: Tuesday, February 22, 2005 3:18 AM
Subject: Re: [ECOS] Help with booting Linux off my Redboot prompt
> Krishna Ganugapati wrote:
>
>> I have successfully built redboot for my IXP425 - can load redboot image
>> store it in flash, npe's work fine and I can successfully tftp images
>> down to my board from by RedHat9 Linux box.
>>
>> I've built Linux kernels and a rootfs.
>>
>> My compressed Linux kernel is zImage
>>
>> and my compressed rootfs is rootfs.gz
>>
>> I execute the following commands at my Redboot console
>>
>> a) load -r -v -b 0x00800000 rootfs.gz ; load the rootfs.gz image @
>> 0x0800000
>>
>> b) load -r -v -v 0x01600000 zImage ; load the compressed kernel zImage
>> @ 0x01600000
>>
>> c) exec
>>
>> The resulting output is
>> Using base address 0x01600000 and length 0x000b73c0 (which is the correct
>> size of the image)
>>
>> However following that, I get nothing....
>>
>> Any ideas how I can debug further... or should I be taking this to
>> another alias...
>>
>>
>> Thanks!
>>
>> Krishna
>
> Try explicitly indicate what you want load from.
> exec -b 0x01600000 -l 0 0x01600000
>
>
>
> --
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> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
>
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