Data-abort exception while trying to boot skalk/linux imx-53 branch with genode trustzone
Abhishek Kumar
abhishekkmr18 at ...9...
Thu Jun 1 11:58:13 CEST 2017
Hello Stefan
Thanks for your help. Linux is loading now but it shows i2c error and then
dumps the same exception state as shown above `Data Abort`.
```
da9052_ssc_i2c 0-0048: 2 - da9052_i2c_read:master_xfer Failed!!
da9052_i2c_is_connected - i2c read failed.....
```
Though the linux.bin which tz_vmm script tries to download, loads fine. It
also shows above error but continues to load instead of crashing. I need
the source code of whatever binary I am running. Can you help me with
source code of the executable which is available here `
http://genode.org/files/images/imx53_qsb/linux_trustzone.bin`.
Thanks
Abhishek
On Thu, Jun 1, 2017 at 8:46 AM, Stefan Kalkowski <
stefan.kalkowski at ...1...> wrote:
> Hi,
>
> the tz_vmm component does not expect an uImage to be loaded, but the
> pure kernel binary instead. Within the Linux build tree for instance the
> path: "arch/arm/boot/compressed/vmlinux". I wonder, whether you got the
> very same exception state when not trying to execute on secure world RAM?
>
> Regards
> Stefan
>
> On 05/31/2017 04:39 PM, Abhishek Kumar wrote:
> > 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...
> > <mailto: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
> > <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
> > >
> > >
> > >
> > ------------------------------------------------------------
> ------------------
> > > Check out the vibrant tech community on one of the world's most
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> > >
> > >
> > >
> > > _______________________________________________
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> > >
> >
> > --
> > Stefan Kalkowski
> > Genode Labs
> >
> > https://github.com/skalk · http://genode.org/
> >
> > ------------------------------------------------------------
> ------------------
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> >
> >
> >
> >
> > ------------------------------------------------------------
> ------------------
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> >
> >
> >
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>
> --
> Stefan Kalkowski
> Genode Labs
>
> https://github.com/skalk · http://genode.org/
>
> ------------------------------------------------------------
> ------------------
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