bare-hw trustzone on the Freescale i.MX 6 Sabre SD board

Mahdi Aichouch foxmehdi at ...9...
Tue Jan 6 16:52:17 CET 2015 

Sir,

I would be happy to work together with Chirag on this project.
Thank you very much for your answer.

Kind regards,
Mahdi


On Tue, Jan 6, 2015 at 3:50 PM, Madhu (Macaque Labs) <madhu at ...275...>
wrote:

> Chirag, my Master's student should be able to help you.since he is using
> an identical environment. He has not completely succeeded but should be
> ahead of you.
> Hopefully two heads are better than one!
>
> Chirag,
> See how we can help Mahdi out.
> On Jan 6, 2015 6:55 PM, "Mahdi Aichouch" <foxmehdi at ...9...> wrote:
>
>> Hello,
>>
>> I am trying to port the bare-hw trustzone to the Freescale i.MX 6
>> quad-core Sabre SD board.
>>
>> I started from the source code given in this repository:
>> https://github.com/decaprox/genode
>>
>> I adapted the TSC-380 driver from the versatile express version as a
>> TZASC to the i.MX-6 board.
>>
>> At this moment, I just configure the existing TSC-380 with the right base
>> address, but I did not yet configured it to secure any memory region.
>>
>> Also, I did not yet used the CSU that was implemented for the i.MX53 to
>> secure any device.
>>
>> I partitioned the the memory space into two parts:
>>
>> 0x1000 0000 - 0x2000 0000 : as a secure memory space
>> 0x2000 0000 - 0x4000 0000 : as a non secure memory space
>>
>> I implemented a small kernel in order to test the implementation.
>>
>> My simple kernel is just an assembly code that call C function, that
>> prints a message on
>> the serial port.
>>
>> I get an error after running the run/vmm test case.
>> Here are the debug messages that I get
>>
>> void Kernel::trustzone_initialization(Kernel::Pic*): --- IMX6 trustzone
>> INIT ---
>> Core memory allocator
>> ---------------------
>> Allocator 102d46c0 dump:
>>  Block: [10000000,1000001c) size=0000001c avail=00000000
>> max_avail=00000000
>>  Block: [1000001c,10000038) size=0000001c avail=00000000
>> max_avail=00000000
>>  Block: [10000038,10000054) size=0000001c avail=00000000
>> max_avail=1fd28000
>>  Block: [10000054,10000070) size=0000001c avail=00000000
>> max_avail=00000000
>>  Block: [10000070,1000008c) size=0000001c avail=00000000
>> max_avail=00000000
>>  Block: [1000008c,10001000) size=00000f74 avail=00000f74
>> max_avail=1fd28000
>>  Block: [102d8000,30000000) size=1fd28000 avail=1fd28000
>> max_avail=1fd28000
>>  => mem_size=533893120 (509 MB) / mem_avail=533892980 (509 MB)
>>
>> IO memory allocator
>> -------------------
>> Allocator 102d4b1c dump:
>>  Block: [00000000,02020000) size=02020000 avail=02020000
>> max_avail=02020000
>>  Block: [02024000,020d0000) size=000ac000 avail=000ac000
>> max_avail=0df2c000
>>  Block: [020d4000,10000000) size=0df2c000 avail=0df2c000
>> max_avail=0df2c000
>>  Block: [100ec000,100f0000) size=00004000 avail=00004000
>> max_avail=20000000
>>  Block: [20000000,40000000) size=20000000 avail=20000000
>> max_avail=20000000
>>  => mem_size=805289984 (767 MB) / mem_avail=805289984 (767 MB)
>>
>> IRQ allocator
>> -------------------
>> Allocator 102d53d4 dump:
>>  Block: [00000000,0000003a) size=0000003a avail=0000003a
>> max_avail=0000003a
>>  Block: [0000003b,00000058) size=0000001d avail=0000001d
>> max_avail=000003a7
>>  Block: [00000059,00000400) size=000003a7 avail=000003a7
>> max_avail=000003a7
>>  => mem_size=1022 (0 MB) / mem_avail=1022 (0 MB)
>>
>> ROM filesystem
>> --------------
>> Rom_fs 102d5814 dump:
>>  Rom: [100a5000,100a5358) linux
>>  Rom: [1004f000,1007fedc) init
>>  Rom: [100a7000,100a71ef) config
>>  Rom: [100a6000,100a601f) initrd.gz
>>  Rom: [10080000,100a409c) vmm
>>
>> int main(): --- create local services ---
>> int main(): --- start init ---
>> int main(): transferred 508 MB to init
>> int main(): --- init created, waiting for exit condition ---
>> [init] Could not open file "ld.lib.so"
>> [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 "vmm"
>> [init]   RAM quota:  3932160
>> [init]   ELF binary: vmm
>> [init]   priority:   0
>> [init -> vmm] Start virtual machine
>> [init -> vmm] Curious exception occurred
>> [init -> vmm] Cpu state:
>> [init -> vmm]   r0        = 00000000
>> [init -> vmm]   r1        = 000008e0
>> [init -> vmm]   r2        = 20000100
>> [init -> vmm]   r3        = 00000000
>> [init -> vmm]   r4        = 00000000
>> [init -> vmm]   r5        = 00000000
>> [init -> vmm]   r6        = 00000000
>> [init -> vmm]   r7        = 00000000
>> [init -> vmm]   r8        = 00000000
>> [init -> vmm]   r9        = 00000000
>> [init -> vmm]   r10       = 00000000
>> [init -> vmm]   r11       = 00000000
>> [init -> vmm]   r12       = 00000000
>> [init -> vmm]   sp        = 00000000
>> [init -> vmm]   lr        = 00000000
>> [init -> vmm]   ip        = 20000100
>> [init -> vmm]   cpsr      = 00000093
>> [init -> vmm]   sp_und    = 00000000
>> [init -> vmm]   lr_und    = 00000000
>> [init -> vmm]   spsr_und  = 00000000
>> [init -> vmm]   sp_svc    = 00000000
>> [init -> vmm]   lr_svc    = 00000000
>> [init -> vmm]   spsr_svc  = 00000000
>> [init -> vmm]   sp_abt    = 00000000
>> [init -> vmm]   lr_abt    = 00000000
>> [init -> vmm]   spsr_abt  = 00000000
>> [init -> vmm]   sp_irq    = 00000000
>> [init -> vmm]   lr_irq    = 00000000
>> [init -> vmm]   spsr_irq  = 00000000
>> [init -> vmm]   sp_fiq    = 00000000
>> [init -> vmm]   lr_fiq    = 00000000
>> [init -> vmm]   spsr_fiq  = 00000000
>> [init -> vmm]   exception = reset
>> virtual void
>> Genode::Signal_session_component::free_context(Genode::Signal_context_capability):
>> Not implemented
>>
>> Note:
>> The file linux and initrd.gz showed here are not real. I named my simple
>> kernel as linux, and the initrd.gz file is an empty file.
>>
>> The VMM version I am using loads an elf binary kernel.
>>
>> I attached the assembly file of my simple kernel. From the dump of the
>> CPU state, we can see that the IP register shows the first instruction of
>> the kernel, which apparently generates an exception.
>>
>> Could someone tell me how to track down the source of the error and help
>> me to debug it.
>>
>> Thanks very much in advance.
>>
>> Kind regards,
>> Mahdi
>>
>>
>>
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>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming! The Go Parallel Website,
> sponsored by Intel and developed in partnership with Slashdot Media, is
> your
> hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials and more. Take a
> look and join the conversation now. http://goparallel.sourceforge.net
> _______________________________________________
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