RamDisk

RamDisk

[Aman]

Hi All

I am using a PPC 440 evaluation Kit with openbios as the monitor code. I
have successfully download kernel image using the NFS. Now I want to create
a RAMDISK for the PPC 440. After which I want to download the RAMDISK and
the kernel image to the RAM. My question is, using the monitor
code(OpenBios), is it possible to download both the image ie RAMDISK and
Kernel image to the RAM.

Thanking you in advance

Regards
Aman


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Re: RamDisk

[Matt Porter]

On Fri, Sep 13, 2002 at 12:29:35AM +0530, Aman wrote:
>
> Hi All
>
> I am using a PPC 440 evaluation Kit with openbios as the monitor code. I
> have successfully download kernel image using the NFS. Now I want to create
> a RAMDISK for the PPC 440. After which I want to download the RAMDISK and
> the kernel image to the RAM. My question is, using the monitor
> code(OpenBios), is it possible to download both the image ie RAMDISK and
> Kernel image to the RAM.

Put your compressed ramdisk image in arch/ppc/boot/images/ramdisk.image.gz
and make the zImage.initrd target.  The resulting zImage.initrd.ebony
has the compressed ramdisk image linked in.

Regards,
--
Matt Porter
porter@cox.net
This is Linux Country. On a quiet night, you can hear Windows reboot.

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RAMDISK

[Kamalesh B]

Hello,

Right now, iam working booting Linux 2.4.1 on MPC8260ADS. Iam using NFS
option to boot the linux. Mount point is on the host PC.

Iam using PPCBOOT bootloader.

Command line argument for linux given is
root=/dev/nfs    nfsaddrs=<targetip>:<serverip>

My query is
1. How to boot linux-2.4.1 using root file system rather than using
network file system?
2. How to make ramdisk(root fs) part of linux kernel? DO i need to
change some makefiles or config options?
3. How to remove dependency of nfs to boot-up LINUX i.e, OS image should
boot in standalone setup?

thanks in advance,
with rgds,
kamal

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Re: RAMDISK

[Wolfgang Denk]

In message <3E5EF447.3B9088D7@tataelxsi.co.in> you wrote:
>
> Command line argument for linux given is
> root=/dev/nfs    nfsaddrs=<targetip>:<serverip>
>
> My query is
> 1. How to boot linux-2.4.1 using root file system rather than using
> network file system?

You always use a "root filesystem". With your  option,  you  mount  a
filesystem exported by your NFS server as root filesystem.

I guess you want to mount a ramdisk as rootfilesystem. To do so, make
sure your "bootargs" variable contains the string "root=/dev/ram"

> 2. How to make ramdisk(root fs) part of linux kernel? DO i need to
> change some makefiles or config options?

Why would you want to make it part  of  the  kernel?  This  makes  no
sense.  If  you  mean how to combine the ramdisk image and the kernel
image into one image file,  then  please  see  the  multi-file  image
format of the "mkimage" tol that comes with PPCBoot.

> 3. How to remove dependency of nfs to boot-up LINUX i.e, OS image should
> boot in standalone setup?

Just do not use "root=/dev/nfs" in your "bootargs" settings.


Maybe you can get some more detailed help from reading the docs, like
http://www.denx.de/re/DPLG.html

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
Without freedom of choice there is no creativity.
	-- Kirk, "The return of the Archons", stardate 3157.4

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