[Xen-devel] undefined instruction error during HYP mode switch for arndale-octa board

[HyonYoung Choi <commani@xxxxxxxxx>]

Hello Andre,

I am trying to port xen to arndale-octa board.

I am using u-boot modified for arndale-octa

from tracking-arndale_octa branch of http://landing-teams/working/samsung/u-boot.gitÂ

Because there is no HYP mode switch code in the u-boot,

I tried to port your code inÂhttp://git.linaro.org/git/people/andre.przywara/u-boot.git.

I also put debug code.

In booting, it reboot infinitely with following error message:

======================

 Âswitch_hyp: GIC dist enabled

 switch_hyp: 224 interrupts supportd

 switch_hyp: all interrupts switched to non-secure

 switch_hyp: setting SP start start address (0x9f86d6b4)

 switch_hyp: kicked all CPUs

 VBAR before: 0x9f86c000

undefined instruction

pc : [<9f86d748>] Â Â Â Â Âlr : [<9f86d600>]

sp : 9f7638c0 Âip : 0000000f   fp : 9f86e4b4

r10: 9f8ad294 Âr9 : 00000000 Â Â r8 : 9f763f10

r7 : 00000000 Âr6 : ffffffff   r5 : 00000007 Âr4 : 9f86c000

r3 : 10482000 Âr2 : 10480000 Â Â r1 : 016e3600 Âr0 : 00010000

Flags: nZCv ÂIRQs off ÂFIQs off ÂMode SVC_32

Resetting CPU ...

========================

The problematic code is "mcr   p15, 0, r1, c1, c1, 2"

in arch/arm/cpu/armv7/nonsec_virt.S , nonsec_init function

Do you have any idea about this error?

Regards,

Hyonyoung Choi

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