FIQ Exception in tz_vmm

[chirag garg]

Hi all,

I am working on imx6 SABER Lite board. I tried to enable TZASC(TrustZone
Address Space Controller)  through fuse programming and i guess it works
fine.
when i make RAM region secure in which Normal OS(another Genode image) is
running it gives me pf_abort exception which seems to be fine (guess).

But I am always getting the FIQ exception as virtual machine start in
secure world. What could be the reason behind this ?

Message Log: Starting kernel ...

kernel initialized
Genode 15.02
int main(): --- create local services ---
int main(): --- start init ---
int main(): transferred 507 MB to init
int main(): --- init created, waiting for exit condition ---
[init] parent provides
[init]   service "ROM"
[init]   service "RAM"
[init]   service "IRQ"
[init]   service "IO_MEM"
[init]   service "CAP"
[init]   service "PD"
[init]   service "RM"
[init]   service "CPU"
[init]   service "LOG"
[init]   service "SIGNAL"
[init]   service "VM"
[init] child "tz_vmm"
[init]   RAM quota:  3932160
[init]   ELF binary: tz_vmm
[init]   priority:   0
[init -> tz_vmm] Start virtual machine ...
[init -> tz_vmm] Cpu state:
[init -> tz_vmm]   Register     Virt     Phys
[init -> tz_vmm] ---------------------------------
[init -> tz_vmm]   r0         = ffffffff [00000000]
[init -> tz_vmm]   r1         = ffffffff [00000000]
[init -> tz_vmm]   r2         = ffffffff [00000000]
[init -> tz_vmm]   r3         = ffffffff [00000000]
[init -> tz_vmm]   r4         = ffffffff [00000000]
[init -> tz_vmm]   r5         = ffffffff [00000000]
[init -> tz_vmm]   r6         = ffffffff [00000000]
[init -> tz_vmm]   r7         = ffffffff [00000000]
[init -> tz_vmm]   r8         = ffffffff [00000000]
[init -> tz_vmm]   r9         = ffffffff [00000000]
[init -> tz_vmm]   r10        = ffffffff [00000000]
[init -> tz_vmm]   r11        = ffffffff [00000000]
[init -> tz_vmm]   r12        = ffffffff [00000000]
[init -> tz_vmm]   sp         = ffffffff [00000000]
[init -> tz_vmm]   lr         = ffffffff [00000000]
[init -> tz_vmm]   ip         = ffffffff [00000000]
[init -> tz_vmm]   cpsr       = ffffffff
[init -> tz_vmm]   sp_und     = ffffffff [00000000]
[init -> tz_vmm]   lr_und     = ffffffff [00000000]
[init -> tz_vmm]   spsr_und   = ffffffff [00000000]
[init -> tz_vmm]   sp_svc     = ffffffff [00000000]
[init -> tz_vmm]   lr_svc     = ffffffff [00000000]
[init -> tz_vmm]   spsr_svc   = ffffffff [00000000]
[init -> tz_vmm]   sp_abt     = ffffffff [00000000]
[init -> tz_vmm]   lr_abt     = ffffffff [00000000]
[init -> tz_vmm]   spsr_abt   = ffffffff [00000000]
[init -> tz_vmm]   sp_irq     = ffffffff [00000000]
[init -> tz_vmm]   lr_irq     = ffffffff [00000000]
[init -> tz_vmm]   spsr_irq   = ffffffff [00000000]
[init -> tz_vmm]   sp_fiq     = ffffffff [00000000]
[init -> tz_vmm]   lr_fiq     = ffffffff [00000000]
[init -> tz_vmm]   spsr_fiq   = ffffffff [00000000]
[init -> tz_vmm]   ttbr0      = ffffffff
[init -> tz_vmm]   ttbr1      = ffffffff
[init -> tz_vmm]   ttbrc      = ffffffff
[init -> tz_vmm]   dfar       = ffffffff [00000000]
[init -> tz_vmm]   exception  = fiq
[init -> tz_vmm] Curious exception occured
[init -> tz_vmm] Cpu state:
[init -> tz_vmm]   Register     Virt     Phys
[init -> tz_vmm] ---------------------------------
[init -> tz_vmm]   r0         = 00000000 [00000000]
[init -> tz_vmm]   r1         = 00000eb9 [00000000]
[init -> tz_vmm]   r2         = 30000100 [00000000]
[init -> tz_vmm]   r3         = 00000000 [00000000]
[init -> tz_vmm]   r4         = 00000000 [00000000]
[init -> tz_vmm]   r5         = 00000000 [00000000]
[init -> tz_vmm]   r6         = 00000000 [00000000]
[init -> tz_vmm]   r7         = 00000000 [00000000]
[init -> tz_vmm]   r8         = 00000000 [00000000]
[init -> tz_vmm]   r9         = 00000000 [00000000]
[init -> tz_vmm]   r10        = 00000000 [00000000]
[init -> tz_vmm]   r11        = 00000000 [00000000]
[init -> tz_vmm]   r12        = 00000000 [00000000]
[init -> tz_vmm]   sp         = 00000000 [00000000]
[init -> tz_vmm]   lr         = 00000000 [00000000]
[init -> tz_vmm]   ip         = 30001000 [00000000]
[init -> tz_vmm]   cpsr       = 00000093
[init -> tz_vmm]   sp_und     = 00000000 [00000000]
[init -> tz_vmm]   lr_und     = 00000000 [00000000]
[init -> tz_vmm]   spsr_und   = 00000000 [00000000]
[init -> tz_vmm]   sp_svc     = 00000000 [00000000]
[init -> tz_vmm]   lr_svc     = 00000000 [00000000]
[init -> tz_vmm]   spsr_svc   = 00000000 [00000000]
[init -> tz_vmm]   sp_abt     = 00000000 [00000000]
[init -> tz_vmm]   lr_abt     = 00000000 [00000000]
[init -> tz_vmm]   spsr_abt   = 00000000 [00000000]
[init -> tz_vmm]   sp_irq     = 00000000 [00000000]
[init -> tz_vmm]   lr_irq     = 00000000 [00000000]
[init -> tz_vmm]   spsr_irq   = 00000000 [00000000]
[init -> tz_vmm]   sp_fiq     = 00000000 [00000000]
[init -> tz_vmm]   lr_fiq     = 00000000 [00000000]
[init -> tz_vmm]   spsr_fiq   = 00000000 [00000000]
[init -> tz_vmm]   ttbr0      = 112a1041
[init -> tz_vmm]   ttbr1      = 93a2c04b
[init -> tz_vmm]   ttbrc      = 00000000
[init -> tz_vmm]   dfar       = 114558eb [00000000]
[init -> tz_vmm]   exception  = pf_abort



Regards

Chirag Garg
IIT Madras , Rise Lab
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