Data-abort exception while trying to boot skalk/linux imx-53 branch with genode trustzone

[Abhishek Kumar]

Hello Stefan
Thanks for your reply. I tried at 80008000 address as well.

abhishek at ...514...:~$ file linux
> linux: u-boot legacy uImage, Linux-2.6.35.3-01384-g9533414-di, Linux/ARM,
> OS Kernel Image (Not compressed), 2933872 bytes, Wed May 31 15:52:08 2017,
> Load Address: 0x80008000, Entry Point: 0x80008000, Header CRC: 0x83CD7B97,
> Data CRC: 0x914C7C24
>


I tried to print from `start` function in
"os/src/server/tz_vmm/include/vm_base.h"
file.

                void start()
>                 {
>                         Genode::memset((void*)_state, 0,
> sizeof(Genode::Vm_state));
>                         _load_kernel();
>                         _load_kernel_surroundings();
>                         _state->cpsr = 0x93; /* SVC mode and IRQs disabled
> */
>                         _state->r0   = 0;
>                         _state->r1   = _mach_type;
>                         _state->r2   = _ram.base() + _board_info_offset();
>                 }
>
>
_load_kernel() and other statements are working perfectly fine, I tried
printing after each line using PINF. I think that means kernel is loading
fine, though I'm not sure. What might be going wrong here?

Thanks
Abhishek

On Wed, May 31, 2017 at 2:57 PM, Stefan Kalkowski <
stefan.kalkowski at ...1...> wrote:

> Hello,
>
> On 05/31/2017 02:25 PM, Abhishek Kumar wrote:
> > Hello
> > I am trying to run linux in normal world on genode trustzone. I have
> > changed the run-script of genode to copy the uImage generated from
> > skalk/linux's imx-53 branch instead of downloading (default). I am
> > making uImage with following command:
> >
> > make uImage LOADADDR=0x70010000
>
> You are trying to relocate the Linux kernel within the memory portion
> that is used by the secure world (Genode). The secure RAM is from
> 0x70000000 to  0x7fffffff. Please follow these instructions to build the
> guest kernel on your own, like referenced within the tz_vmm run-script:
>
>   https://genode.org/files/release-15.11/usb_armory_tz_vmm/README
>
> Regards
> Stefan
>
> >
> > while executing, genode stops after starting virtual machine with
> > following error trace:
> >
> > ```
> > .
> > .
> > [init] child "tz_vmm"
> > [init]   RAM quota:  10203136
> > [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         = 07000000 [00000000]
> > [init -> tz_vmm]   r1         = f801ff50 [00000000]
> > [init -> tz_vmm]   r2         = ffffffe4 [00000000]
> > [init -> tz_vmm]   r3         = 40002000 [00000000]
> > [init -> tz_vmm]   r4         = 00000000 [00000000]
> > [init -> tz_vmm]   r5         = 00000000 [00000000]
> > [init -> tz_vmm]   r6         = 000000ee [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         = 0040dfe8 [00000000]
> > [init -> tz_vmm]   cpsr       = 60000093
> > [init -> tz_vmm]   sp_und     = 00000000 [00000000]
> > [init -> tz_vmm]   lr_und     = 8000800c [00000000]
> > [init -> tz_vmm]   spsr_und   = 00000093 [00000000]
> > [init -> tz_vmm]   sp_svc     = f801ff4c [00000000]
> > [init -> tz_vmm]   lr_svc     = 0040bc97 [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      = 00000000
> > [init -> tz_vmm]   ttbr1      = 00000000
> > [init -> tz_vmm]   ttbrc      = 00000000
> > [init -> tz_vmm]   dfar       = 07000000 [00000000]
> > [init -> tz_vmm]   exception  = data_abort
> > [init -> tz_vmm] Could not handle data-abort will exit!
> >
> >
> > ```
> >
> > Initially I thought I might be giving wrong load address while making
> > uImage, but it seems problem is not that. Can someone help me with what
> > might be possibly going wrong?
> >
> > Thanks
> > Abhishek
> >
> >
> > ------------------------------------------------------------
> ------------------
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> >
> >
> >
> > _______________________________________________
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> > genode-main at lists.sourceforge.net
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> >
>
> --
> Stefan Kalkowski
> Genode Labs
>
> https://github.com/skalk · http://genode.org/
>
> ------------------------------------------------------------
> ------------------
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