Linux kernel boot up on ARMv7l based board - failed

[Renjith G]

Sorry, A gentle reminder in case it is missed earlier.

On 1/13/2015 1:10 PM, Renjith G wrote:
> Hello,
>
> I have an R-Car H2 development board (Lager) from Renesas and it was 
> correctly running with Linux Kernel 3.4.81-ltsi till last week.
>
> But unfortunately now, During boot up the kernel hangs and shows till 
> "Starting kernel....."
>
> I have enabled earlyprintk and here is the code flow till freeze point.
> 1. It is reaching till '/arch/arm/mm/mmu.c' in function 
> 'devicemaps_init()' and then it calls 'local_flush_tlb_all()'
> 2. The 'local_flush_tlb_all()' is defined in 
> '/arch/arm/include/asm/tlbflush.h' and from there it calls 
> 'tlb_op(TLB_V7_UIS_ASID, "c8, c3, 0", zero);'
> 3. The above call hangs and hence not returning, so it the boot up hangs.
>
> Do you have any suggestions?
>
> Is this due to any board failure? If so, is there any ways I can tweak 
> it?
>
> I see in step 2, executes some co-processor specific instructions and 
> the board has ARM CA9 , ARM CA15 and SH4A processors mentioned in the 
> reference manual and I am not so sure.
>
> Expecting your reply.
>
> Many kind regards,
> /renjith_g
> .
>