Re: Genode onto i.mx53 qsb

Hi Joseph,

On 09/15/2014 05:20 PM, Joseph Lee wrote:

Thank you Stefan for your valuable feedback

I think it is working now. But i have another issue. There is nothing displayed on the screen (LVDS Display kit) I already configured the u-boot environment variable bootargs_base.

     bootargs_base=set bootargs console=ttymxc0,115200 gpu_nommu ${lvds}

And it is working with the per-installed Linux operating system. I am using u-boot 2009.08 version.

Herewith, i have attached the output on serial console.

What is still missing? thank you in advance

The u-boot variable you mentioned is used when u-boot starts the Linux kernel. Then the bootloader provides the corresponding arguments to the kernel. In our small test scenario, a Genode application called tz_vmm fulfills the role of the bootloader for the Linux instance running in TrustZone's "normal world". Therefore, the tz_vmm has to provide the arguments to the Linux kernel. They are hardcoded in the application, have a look at:

https://github.com/genodelabs/genode/blob/master/repos/os/src/server/tz_vmm/...

In line 36 you see the command line for the Linux kernel.

Regards Stefan

regards, Joseph

On Mon, Sep 15, 2014 at 8:44 AM, Stefan Kalkowski <stefan.kalkowski@...1... mailto:stefan.kalkowski@...1...> wrote:

Hi Joseph,

what u-boot version do you use? I recently run into a similar problem
when using a recent u-boot version. It had to do with a more strict
checking before unzipping. To test out whether it is the same problem
try to run the image without compressing it. Therefore, you might build
your uImage by hand:

  /usr/local/genode-gcc/bin/genode-arm-objcopy -O binary \
  var/run/tz_vmm/image.elf var/run/tz_vmm/image.bin

and:

  mkimage -A arm -O linux -T kernel -C none -a 0x70010000 \
  -e 0x70010000 -d var/run/tz_vmm/image.bin var/run/tz_vmm/uImage

If that works for you it's probably the same issue.

Regards
Stefan

On 09/14/2014 06:47 AM, Joseph Lee wrote:
> Hello,
>
> I'm trying to port genode onto i.mx53 quick start board. I followed the
> building steps in this thread.
> http://sourceforge.net/p/genode/mailman/genode-main/thread/9167aa55bacd5e3f00e64168280aef3e%40lcc.uma.es/#msg31683911
>
> Now i get /uImage/ in in the building directory(var/run/tz_vmm) with
> other two files (/boot_modules.s/ and /image.elf/). The size of
/uImage/
> is 7.5MB
>
> I loaded the /uImage/ to memory address 0x70800000. When I tried
to boot
> with the same memory address (bootm 0x70800000), i get the following error.
>
> ## Booting kernel from Legacy Image at 70800000 ...
>    Image Name:
>    Image Type:   ARM Linux Kernel Image (gzip compressed)
>    Data Size:    7858693 Bytes =  7.5 MB
>    Load Address: 70010000
>    Entry Point:  70010000
>    Verifying Checksum ... OK
>    Uncompressing Kernel Image ... Error: inflate() returned -5
> GUNZIP: uncompress, out-of-mem or overwrite error - must RESET board to
> recover
> resetting ...
>
> I tried again with another memory address (0x78000000) if there was
> overlap. Still I get the same result.
>
> I also checked if there is overlap with the physical address ranges used
> by u-boot bootloader using /readelf/.
>
> Here is the output
>
> Elf file type is EXEC (Executable file)
> Entry point 0x70010000
> There are 3 program headers, starting at offset 52
>
> Program Headers:
>   Type                  Offset   VirtAddr   PhysAddr   FileSiz MemSiz
> Flg Align
>   EXIDX          0x077138 0x7007f138 0x7007f138 0x02578 0x02578 R   0x4
>   LOAD           0x008000 0x70010000 0x70010000 0x6ac64 0x6ac64 R E 0x8000
>   LOAD           0x073000 0x7007b000 0x7007b000 0x0b03c 0xd3ed5 RW  0x8000
>
> What is missing? thanks in advance
>
> best regards,
> Joseph,
>
>
>
>
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--
Stefan Kalkowski
Genode Labs

http://www.genode-labs.com/ · http://genode.org/

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