Kernel Panic : Not Syncing : Exit code 0x00000004

Kernel Panic : Not Syncing : Exit code 0x00000004

[suneet saini]

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Hello Team,

          I am using the 'hob' from poky and building the image by
selecting the machine as "qemuarm". Initially this file having architecture
as followed
qemuarm.conf
+++++++++++++++++++++++++++++++++++++++
#@TYPE: Machine
#@NAME: arm_versatile_926ejs
#@DESCRIPTION: arm_versatile_926ejs

require conf/machine/include/qemu.inc
require conf/machine/include/tune-arm926ejs.inc
#require conf/machine/include/tune-arm1136jf-s.inc

KERNEL_IMAGETYPE = "zImage"

SERIAL_CONSOLE = "115200 ttyAMA0"
+++++++++++++++++++++++++++++++++++++++

After building the image with "core-image-minimal" or
"core-image-full-cmdline" while running the image with qemu it works fine.
I want to change qemu working for "arm v7a" means support "Cortex A8".
That's why for this I make the changes in qemuarm.conf as in the
"~/poky/meta/conf/machine.conf"

qemuarm.conf
+++++++++++++++++++++++++++++++++++++++

require conf/machine/include/qemu.inc
require conf/machine/include/tune-cortexa8.inc

KERNEL_IMAGETYPE = "zImage"

SERIAL_CONSOLE = "115200 ttyAMA0"
+++++++++++++++++++++++++++++++++++++++

After that I am building the image and running it with qemu; I am getting
the kernel panic.

*Kernel Panic - not syncing : Attempting to kill Init! exitcode=0x00000004
*

For that snapshot of that is also attached with this mail.

-- 
*Suneet Kumar Saini*

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Re: Kernel Panic : Not Syncing : Exit code 0x00000004

[Richard Purdie]

On Thu, 2015-02-19 at 11:43 +0530, suneet saini wrote:
>           I am using the 'hob' from poky and building the image by
> selecting the machine as "qemuarm". Initially this file having
> architecture as followed 
> qemuarm.conf
> +++++++++++++++++++++++++++++++++++++++
> #@TYPE: Machine
> #@NAME: arm_versatile_926ejs
> #@DESCRIPTION: arm_versatile_926ejs
> 
> require conf/machine/include/qemu.inc
> require conf/machine/include/tune-arm926ejs.inc
> #require conf/machine/include/tune-arm1136jf-s.inc
> 
> KERNEL_IMAGETYPE = "zImage"
> 
> SERIAL_CONSOLE = "115200 ttyAMA0"
> +++++++++++++++++++++++++++++++++++++++
> 
> 
> After building the image with "core-image-minimal" or
> "core-image-full-cmdline" while running the image with qemu it works
> fine.  I want to change qemu working for "arm v7a" means support
> "Cortex A8". That's why for this I make the changes in qemuarm.conf as
> in the "~/poky/meta/conf/machine.conf"
> 
> qemuarm.conf
> +++++++++++++++++++++++++++++++++++++++
> 
> require conf/machine/include/qemu.inc
> require conf/machine/include/tune-cortexa8.inc
> 
> KERNEL_IMAGETYPE = "zImage"
> 
> SERIAL_CONSOLE = "115200 ttyAMA0"
> +++++++++++++++++++++++++++++++++++++++
> 
> 
> After that I am building the image and running it with qemu; I am
> getting the kernel panic.
> 
> 
> Kernel Panic - not syncing : Attempting to kill Init!
> exitcode=0x00000004  
> 
Its very likely that the system sees an "invalid" instruction and is
panicking as a result.

For armv7a you'll need to ensure you pass the correct -cpu option to
qemu to make this work. By default it will only use am armv5 capable CPU
(since this is what qemuarm builds).

Cheers,

Richard

Re: Kernel Panic : Not Syncing : Exit code 0x00000004

[Richard Purdie]

On Thu, 2015-02-19 at 15:51 +0530, suneet saini wrote:
>         I you more elaborate to locate this default location in whole
> build then it'll be better for me. As I am totally a newbie to
> Yoctoproject.
> 
Firstly, please don't take this offlist, its impolite.

I appreciate you may be new to the project but I simply don't have time
to solve the problem for you. You need to find the qemuarm cpu options
in the runqemu script and change it to match the architecture you're
trying to build.

Cheers,

Richard