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Re: [Qemu-ppc] qemu-system-ppc unable to boot past "returning from prom_

From: Prasad Deshpande
Subject: Re: [Qemu-ppc] qemu-system-ppc unable to boot past "returning from prom_init"
Date: Fri, 23 Dec 2011 06:36:09 -0800 (PST)

Thanks. I tried what you suggested but it didn't make a difference. I can see the option being passed to the kernel (>> [ppc] Kernel command line: console=ttyPZ0)

Is there a way to see the kernel printk() somewhere if they are enabled?

I enabled kernel debug info and attached GDB. Using GDB I found that it was an unsupported machine type. I am now trying to build the kernel for mpc8544ds

[~/Work/t/os-ppc-linux] qemu-system-ppc -M ?
Supported machines are:
virtex-ml507 Xilinx Virtex ML507 reference design
mpc8544ds  mpc8544ds
prep       PowerPC PREP platform
g3beige    Heathrow based PowerMAC (default)
mac99      Mac99 based PowerMAC
bamboo     bamboo (alias of bamboo-0.13)
bamboo-0.13 bamboo
bamboo-0.12 bamboo
ref405ep   ref405ep
taihu      taihu


From: Alexander Graf <address@hidden>
To: Prasad Deshpande <address@hidden>
Cc: "address@hidden" <address@hidden>
Sent: Friday, December 23, 2011 8:57 AM
Subject: Re: [Qemu-ppc] qemu-system-ppc unable to boot past "returning from prom_init"

On 21.12.2011, at 15:14, Prasad Deshpande wrote:

> Hi,
>  I am trying to run qemu-system-ppc with a stripped down kernel ppc image based on 2.6.29. qemu never goes beyond
> Calling quiesce ...
> returning from prom_init
>  I haven't seen a solution to this posted on qemu page or in the qemu-ppc mailing list archive. I found a bug for this but it seems to have expired. https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/544330
>  Any help is appreciated.
> thanks
> -prasad
> Here are the details:
> qemu: version 1.0
> Linux: kernel based on 2.6.9
> Command line: qemu-system-ppc -hda linuxppc-disk.qcow2 -vnc localhost:1 -kernel LINUX/vmlinux -initrd LINUX/rImage.gz -append console=ttyS0

Please try -append console=ttyPZ0

Also make sure that your kernel is a ppc32 kernel, not a ppc64 one.


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