[linux-yocto] [poky] 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