kernel.org - master not booting on keystone (ARM v7 Cortex A15 SoC) EVMs

[Murali Karicheri]

On 12/19/2014 04:18 PM, Uwe Kleine-König wrote:
> Hello,
>
> On Fri, Dec 19, 2014 at 03:55:50PM -0500, Murali Karicheri wrote:
>> I have pulled the latest master from
>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git and
>> tried booting on keystone k2hk and k2e EVM. The boot hangs with
>> following log. Has anyone seen this? Keystone is an ARM v7 cortex
>> A15 SMP platform. I am assuming master branch is broken for ARM v7
>> and someone is working to address this. v3.18 booted up fine on my
>> EVM.
>>
>> Any idea?
> You forgot to attach the log?! So no, I don't have any idea. Did you
> bisect?
>
> Best regards
> Uwe
>
Just see below if I enable debug earlyprintk

Uncompressing Linux... done, booting the kernel.
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 3.18.0-11757-gd790be3 
(a0868495 at ares-ubuntu) (gcc version 4.7.3 20130226 (prerelease) 
(crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) 
#1 SMP PREEMPT Fri Dec 19 15:53:47 EST 2014
[    0.000000] CPU: ARMv7 Processor [412fc0f4] revision 4 (ARMv7), 
cr=30c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction 
cache
[    0.000000] Machine model: Texas Instruments Keystone 2 Edison EVM
[    0.000000] bootconsole [earlycon0] enabled
[    0.000000] Switching to high address space at 0x800000000
[    0.000000] WARNING: unsafe modification of in-place page tables - 
tainting kernel
[    0.000000] cma: Reserved 16 MiB at 0x000000085f000000
[    0.000000] Forcing write-allocate cache policy for SMP
[    0.000000] Memory policy: Data cache writealloc

I am currently doing a git bisect to find the offending commit.

Murali

-- 
Murali Karicheri
Linux Kernel, Texas Instruments