Re: [ECOS] Help with linux on PC moboard using redboot

Re: [ECOS] Help with linux on PC moboard using redboot

[SSG]

Hi Khurram,
No I actually need to boot off a local harddisk. I have an 
application which required that I do some integrity check 
on the disk before I boot linux that is why I am using 
redboot, so that I can write an ecos application that will 
do the integrity check and then I can load linux as usual.
I am able to load the vmlinuz kernel with
redboot> load -r -b %{FREELOMEM} -m disk hda1:vmlinuz
This throws a lot of multi coloured garbage on the screen, 
perhaps I loaded the image into the video mem area. Then 
if I attempt to execute this the PC simply reboots.

Thanks.
Shyam.

On Wed, 13 Apr 2005 21:09:17 -0500
  "Ali, Khurram" <Khurram_Ali@mentor.com> wrote:
>Shyam,
>
>I have a setup where I boot using a floppy (with 
>redboot). I have ethernet on my target PC. If you have a 
>BOOTP server, redboot will use it to get an IP address. 
>Alternatively, you can use ip_address -l x.x.x.x to 
>provide an IP to your target.
>
>I then use GDB to load my image. Since I am not too 
>fimiliar with GDB, I use insight (GUI over GDB) to 
>download my image to the target.
>
>Does this help?
>
>Thank you,
>Khurram
>
>
>-----Original Message-----
>From: ecos-discuss-owner@ecos.sourceware.org on behalf of 
>SSG
>Sent: Wed 4/13/2005 6:44 PM
>To: ecos-discuss@ecos.sourceware.org
>Subject: [ECOS] Help with linux on PC moboard using 
>redboot
> 
>Hello Everyone:
>Here is my environment : PC motherboard, redboot, linux 
>kernel residing on an attached harddrive.
>
>I know this is a very trivial and basic configuration but 
>I simply could not find any information regarding loading 
>and running Linux on a PC. 
>This would be ideally used in a PC based appliance 
>design.
>
>Similar questions have been posted many times here but I 
>could not find any specific details. If I get enough 
>information I am certainly going to write a HOWTO on 
>this.
>
>My fingers are going numb serching thru the archives. 
>Anyway, if anyone has any information I'll greatly 
>appreciate it.
>Thanks,
>Shyam.
>
>-- 
>Before posting, please read the FAQ: 
>http://ecos.sourceware.org/fom/ecos
>and search the list archive: 
>http://ecos.sourceware.org/ml/ecos-discuss
>
>


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[ECOS] Help with loading kernel on i386

[Shyam Gopal]

Hi Guys,
I am working with redboot on a i386 PC. I'm attempting to 
load and run a bzImage from the redboot prompt. 
redboot boots up fine and gives this message.
RAM: 0x000000-0x000a0000, [0x0008acd0-0x000a0000] 
available

I am able to load the kernel image with
redboot> load -r -b %{FREELOMEM} bzImage
This throws a lot of multi coloured garbage on the 
screen, perhaps I loaded the image into the video mem 
area. Then if I attempt to execute this the PC simply 
reboots.

As per the man page for the exec command. The kernel 
expects to be loaded at a specific address for each 
platform. What is that address for an i386 ? I have 
patched in Ian Campbell "Linux" command for exececuting 
the linux kernel.

When I built redboot there were couple of values used by 
the configtool, is this correct.
>ecosconfig new pc redboot
U CYGSEM_HAL_USE_ROM_MONITOR new inferred value 0
U CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK new inf 
val 0
I'd greatly appreciate any help.
Thanks,
SSG

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[ECOS] Help with loading kernel on i386

[SSG]

Hi Guys,
I am working with redboot on a i386 PC. I'm attempting to 
load and run a bzImage from the redboot prompt. 
redboot boots up fine and gives this message.
RAM: 0x000000-0x000a0000, [0x0008acd0-0x000a0000] 
available

I am able to load the kernel image with
redboot> load -r -b %{FREELOMEM} bzImage
This throws a lot of multi coloured garbage on the 
screen, perhaps I loaded the image into the video mem 
area. Then if I attempt to execute this the PC simply 
reboots. I have patched in Ian Campbell "Linux" command 
for exececuting the linux kernel.


As per the man page for the exec command. The kernel 
expects to be loaded at a specific address for each 
platform. What is that address for an i386 ?

When I built redboot there were couple of values used by 
the configtool
>ecosconfig new pc redboot
U CYGSEM_HAL_USE_ROM_MONITOR new inferred value 0
U CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK new inf 
val 0
I appreciate any help.
Thanks,
SSG

-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss