* RE: [ECOS] Linux over RedBoot
@ 2001-07-12 8:28 Venkat Mynampati
2001-07-12 13:04 ` Gary Thomas
0 siblings, 1 reply; 11+ messages in thread
From: Venkat Mynampati @ 2001-07-12 8:28 UTC (permalink / raw)
To: gthomas; +Cc: ecos-discuss
>On 11-Jul-2001 Venkat Mynampati wrote:
> > Hi,
> > Has anyone tried running Linux over Redboot?
> > i.e a configuration in which redboot is running
> > in flash and linux is loaded into Ram/flash.
> >
> > Could you pls letme know if you were successful
> > in this and how you did it.
>
>We do it all the time on a number of different platforms.
>
>Do you have specific questions about this, or just wondering?
Thanks Gary for responding.
Basically, what i am trying to do is, to load linux(this is for
xscale platform,but not iq80310) on top of redboot, i.e i have
redboot runnning in flash and i am using load command(ymodem, serial
port, my enet has some issues and not working as yet).
hence, i want to understand how other's has done this,
what changes should go into linux's head.S and should i compress
my kernel etc.
I would appreciate if you guys can help me understand this,
by passing some urls/docs/books and src code for a linux port
which works over redboot. I have linux 2.4.2 code downloaded from
kernel.org.
BTW, thanks to Jonathan and other who told me to buy PCI System
Arch, by Tom and Dan. It's a treat to read it.
I have looked at the url passed by Jonathan, but it contained
multiple tar files, whose file names doesn't sound like linux,
so how to get hold the same.
Thanks and Regards,
Venkat N
_________________________________________________________________________
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^ permalink raw reply [flat|nested] 11+ messages in thread
* RE: [ECOS] Linux over RedBoot
2001-07-12 8:28 [ECOS] Linux over RedBoot Venkat Mynampati
@ 2001-07-12 13:04 ` Gary Thomas
0 siblings, 0 replies; 11+ messages in thread
From: Gary Thomas @ 2001-07-12 13:04 UTC (permalink / raw)
To: Venkat Mynampati; +Cc: ecos-discuss
On 12-Jul-2001 Venkat Mynampati wrote:
>>On 11-Jul-2001 Venkat Mynampati wrote:
>> > Hi,
>> > Has anyone tried running Linux over Redboot?
>> > i.e a configuration in which redboot is running
>> > in flash and linux is loaded into Ram/flash.
>> >
>> > Could you pls letme know if you were successful
>> > in this and how you did it.
>>
>>We do it all the time on a number of different platforms.
>>
>>Do you have specific questions about this, or just wondering?
> Thanks Gary for responding.
> Basically, what i am trying to do is, to load linux(this is for
> xscale platform,but not iq80310) on top of redboot, i.e i have
> redboot runnning in flash and i am using load command(ymodem, serial
> port, my enet has some issues and not working as yet).
> hence, i want to understand how other's has done this,
> what changes should go into linux's head.S and should i compress
> my kernel etc.
> I would appreciate if you guys can help me understand this,
> by passing some urls/docs/books and src code for a linux port
> which works over redboot. I have linux 2.4.2 code downloaded from
> kernel.org.
> BTW, thanks to Jonathan and other who told me to buy PCI System
> Arch, by Tom and Dan. It's a treat to read it.
>
> I have looked at the url passed by Jonathan, but it contained
> multiple tar files, whose file names doesn't sound like linux,
> so how to get hold the same.
Read more carefully - this is a complete setup for running Linux on the
iPAQ which is a SA1110 based system. You'll find pointers to the Linux
site we reference ( http://www.handhelds.org/ ), as well as the details
of how to use RedBoot to setup and run the Linux application.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [ECOS] Linux over RedBoot
@ 2001-07-11 14:09 Venkat Mynampati
2001-07-11 14:36 ` Jonathan Larmour
2001-07-11 14:53 ` Gary Thomas
0 siblings, 2 replies; 11+ messages in thread
From: Venkat Mynampati @ 2001-07-11 14:09 UTC (permalink / raw)
To: ecos-discuss
Hi,
Has anyone tried running Linux over Redboot?
i.e a configuration in which redboot is running
in flash and linux is loaded into Ram/flash.
Could you pls letme know if you were successful
in this and how you did it.
Thanks and Regards
Venkat N
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com .
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [ECOS] Linux over RedBoot
2001-07-11 14:09 Venkat Mynampati
@ 2001-07-11 14:36 ` Jonathan Larmour
2001-07-11 14:53 ` Gary Thomas
1 sibling, 0 replies; 11+ messages in thread
From: Jonathan Larmour @ 2001-07-11 14:36 UTC (permalink / raw)
To: Venkat Mynampati; +Cc: ecos-discuss
Venkat Mynampati wrote:
>
> Hi,
> Has anyone tried running Linux over Redboot?
Yes. Lots.
> i.e a configuration in which redboot is running
> in flash and linux is loaded into Ram/flash.
>
> Could you pls letme know if you were successful
> in this and how you did it.
We have a demo on the iPaq for example:
http://sources.redhat.com/redboot/ipaq/
Jifl
--
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine
Come to the Red Hat TechWorld open source conference in Brussels!
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^ permalink raw reply [flat|nested] 11+ messages in thread
* RE: [ECOS] Linux over RedBoot
2001-07-11 14:09 Venkat Mynampati
2001-07-11 14:36 ` Jonathan Larmour
@ 2001-07-11 14:53 ` Gary Thomas
2001-07-11 20:32 ` Fabrice Gautier
1 sibling, 1 reply; 11+ messages in thread
From: Gary Thomas @ 2001-07-11 14:53 UTC (permalink / raw)
To: Venkat Mynampati; +Cc: ecos-discuss
On 11-Jul-2001 Venkat Mynampati wrote:
> Hi,
> Has anyone tried running Linux over Redboot?
> i.e a configuration in which redboot is running
> in flash and linux is loaded into Ram/flash.
>
> Could you pls letme know if you were successful
> in this and how you did it.
We do it all the time on a number of different platforms.
Do you have specific questions about this, or just wondering?
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [ECOS] Linux over RedBoot
2001-07-11 14:53 ` Gary Thomas
@ 2001-07-11 20:32 ` Fabrice Gautier
2001-07-11 23:37 ` Jesper Skov
0 siblings, 1 reply; 11+ messages in thread
From: Fabrice Gautier @ 2001-07-11 20:32 UTC (permalink / raw)
To: Gary Thomas; +Cc: ecos-discuss
On Wed, 11 Jul 2001 15:53:14 -0600 (MDT)
Gary Thomas <gthomas@redhat.com> wrote:
>
> On 11-Jul-2001 Venkat Mynampati wrote:
> > Has anyone tried running Linux over Redboot?
>
> We do it all the time on a number of different platforms.
>
> Do you have specific questions about this, or just wondering?
Yes, one (for now) Does your linux kernel use Redboots Virtual Vectors
and stuff or is Redboot just wiped from memory once the kernel is
launched?
Thanks
--
Fabrice Gautier <gautier@email.enstfr>
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [ECOS] Linux over RedBoot
2001-07-11 20:32 ` Fabrice Gautier
@ 2001-07-11 23:37 ` Jesper Skov
2001-07-12 5:11 ` Gary Thomas
0 siblings, 1 reply; 11+ messages in thread
From: Jesper Skov @ 2001-07-11 23:37 UTC (permalink / raw)
To: Fabrice Gautier; +Cc: Gary Thomas, ecos-discuss
>>>>> "Fabrice" == Fabrice Gautier <gautier@email.enst.fr> writes:
Fabrice> On Wed, 11 Jul 2001 15:53:14 -0600 (MDT)
Fabrice> Gary Thomas <gthomas@redhat.com> wrote:
>>
>> On 11-Jul-2001 Venkat Mynampati wrote:
>> > Has anyone tried running Linux over Redboot?
>>
>> We do it all the time on a number of different platforms.
>>
>> Do you have specific questions about this, or just wondering?
Fabrice> Yes, one (for now) Does your linux kernel use Redboots
Fabrice> Virtual Vectors and stuff or is Redboot just wiped from
Fabrice> memory once the kernel is launched?
RedBoot is wiped on all platforms. Linux runs directly on the
hardware.
However, on SH platforms RedBoot can still be used to debug the Linux
kernel (via serial only though).
Jesper
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [ECOS] Linux over RedBoot
2001-07-11 23:37 ` Jesper Skov
@ 2001-07-12 5:11 ` Gary Thomas
2001-07-12 5:30 ` Fabrice Gautier
0 siblings, 1 reply; 11+ messages in thread
From: Gary Thomas @ 2001-07-12 5:11 UTC (permalink / raw)
To: Jesper Skov; +Cc: ecos-discuss, Fabrice Gautier
On 12-Jul-2001 Jesper Skov wrote:
>>>>>> "Fabrice" == Fabrice Gautier <gautier@email.enst.fr> writes:
>
> Fabrice> On Wed, 11 Jul 2001 15:53:14 -0600 (MDT)
> Fabrice> Gary Thomas <gthomas@redhat.com> wrote:
>>>
>>> On 11-Jul-2001 Venkat Mynampati wrote:
>>> > Has anyone tried running Linux over Redboot?
>>>
>>> We do it all the time on a number of different platforms.
>>>
>>> Do you have specific questions about this, or just wondering?
>
> Fabrice> Yes, one (for now) Does your linux kernel use Redboots
> Fabrice> Virtual Vectors and stuff or is Redboot just wiped from
> Fabrice> memory once the kernel is launched?
>
> RedBoot is wiped on all platforms. Linux runs directly on the
> hardware.
>
> However, on SH platforms RedBoot can still be used to debug the Linux
> kernel (via serial only though).
This is purely a matter of *cooperation* - if the Linux kernel is willing
to cooperate with the debug agent [RedBoot], as with the SH version, then
many things are possible. In most cases, Linux considers itself omnipotent
and RedBoot is out of the picture the instant you say 'exec'.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [ECOS] Linux over RedBoot
2001-07-12 5:11 ` Gary Thomas
@ 2001-07-12 5:30 ` Fabrice Gautier
2001-07-12 5:39 ` Gary Thomas
0 siblings, 1 reply; 11+ messages in thread
From: Fabrice Gautier @ 2001-07-12 5:30 UTC (permalink / raw)
To: Gary Thomas; +Cc: Jesper Skov, ecos-discuss
On Thu, 12 Jul 2001 06:11:03 -0600 (MDT)
Gary Thomas <gthomas@redhat.com> wrote:
>
> On 12-Jul-2001 Jesper Skov wrote:
> >>>>>> "Fabrice" == Fabrice Gautier <gautier@email.enst.fr> writes:
> >
> > Fabrice> Yes, one (for now) Does your linux kernel use Redboots
> > Fabrice> Virtual Vectors and stuff or is Redboot just wiped from
> > Fabrice> memory once the kernel is launched?
> >
> > RedBoot is wiped on all platforms. Linux runs directly on the
> > hardware.
> >
> > However, on SH platforms RedBoot can still be used to debug the Linux
> > kernel (via serial only though).
>
> This is purely a matter of *cooperation* - if the Linux kernel is willing
> to cooperate with the debug agent [RedBoot], as with the SH version, then
> many things are possible. In most cases, Linux considers itself omnipotent
> and RedBoot is out of the picture the instant you say 'exec'.
How come that the SH port of the linux kernel is cooperating with
Redboot? Is it because the ones who initiated the SH port of the linux
kernel had choosen redboot as their boot loader? Or has this been added
afterward?
Do you have any ideas of how dificult it would be to have this same
cooperation for other linux kernel ports, eg i386 or arm ?
--
Fabrice Gautier <gautier@email.enstfr>
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [ECOS] Linux over RedBoot
2001-07-12 5:30 ` Fabrice Gautier
@ 2001-07-12 5:39 ` Gary Thomas
2001-07-12 5:45 ` Jesper Skov
0 siblings, 1 reply; 11+ messages in thread
From: Gary Thomas @ 2001-07-12 5:39 UTC (permalink / raw)
To: Fabrice Gautier; +Cc: ecos-discuss, Jesper Skov
On 12-Jul-2001 Fabrice Gautier wrote:
>
> On Thu, 12 Jul 2001 06:11:03 -0600 (MDT)
> Gary Thomas <gthomas@redhat.com> wrote:
>
>>
>> On 12-Jul-2001 Jesper Skov wrote:
>> >>>>>> "Fabrice" == Fabrice Gautier <gautier@email.enst.fr> writes:
>> >
>> > Fabrice> Yes, one (for now) Does your linux kernel use Redboots
>> > Fabrice> Virtual Vectors and stuff or is Redboot just wiped from
>> > Fabrice> memory once the kernel is launched?
>> >
>> > RedBoot is wiped on all platforms. Linux runs directly on the
>> > hardware.
>> >
>> > However, on SH platforms RedBoot can still be used to debug the Linux
>> > kernel (via serial only though).
>>
>> This is purely a matter of *cooperation* - if the Linux kernel is willing
>> to cooperate with the debug agent [RedBoot], as with the SH version, then
>> many things are possible. In most cases, Linux considers itself omnipotent
>> and RedBoot is out of the picture the instant you say 'exec'.
>
> How come that the SH port of the linux kernel is cooperating with
> Redboot? Is it because the ones who initiated the SH port of the linux
> kernel had choosen redboot as their boot loader? Or has this been added
> afterward?
Hard to say, but the fact that Red Hat has done a lot of work on the Linux/SH
port early on probably helped.
>
> Do you have any ideas of how dificult it would be to have this same
> cooperation for other linux kernel ports, eg i386 or arm ?
>
I don't know about the x86, but for the ARM it's not that big a deal,
probably measured in man days instead of weeks or months.
The real problem with such efforts is not to make them available but
rather to get them accepted into the mainline Linux sources.
Note: we (Red Hat) wouldn't have the time or resources to do this
for any particular platform unless that effort was driven by a customer
contract.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [ECOS] Linux over RedBoot
2001-07-12 5:39 ` Gary Thomas
@ 2001-07-12 5:45 ` Jesper Skov
0 siblings, 0 replies; 11+ messages in thread
From: Jesper Skov @ 2001-07-12 5:45 UTC (permalink / raw)
To: Gary Thomas; +Cc: Fabrice Gautier, ecos-discuss, Jesper Skov
>>>>> "Gary" == Gary Thomas <gthomas@redhat.com> writes:
>> How come that the SH port of the linux kernel is cooperating with
>> Redboot? Is it because the ones who initiated the SH port of the
>> linux kernel had choosen redboot as their boot loader? Or has this
>> been added afterward?
Gary> Hard to say, but the fact that Red Hat has done a lot of work on
Gary> the Linux/SH port early on probably helped.
FAOD the other SH boot loaders already provided that feature and
Linux/SH was ready for it. So it was really RedBoot that adopted an
already existing (very nice) feature.
Jesper
^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2001-07-12 13:04 UTC | newest]
Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
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2001-07-12 8:28 [ECOS] Linux over RedBoot Venkat Mynampati
2001-07-12 13:04 ` Gary Thomas
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2001-07-11 14:09 Venkat Mynampati
2001-07-11 14:36 ` Jonathan Larmour
2001-07-11 14:53 ` Gary Thomas
2001-07-11 20:32 ` Fabrice Gautier
2001-07-11 23:37 ` Jesper Skov
2001-07-12 5:11 ` Gary Thomas
2001-07-12 5:30 ` Fabrice Gautier
2001-07-12 5:39 ` Gary Thomas
2001-07-12 5:45 ` Jesper Skov
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