Genode on Odroid-XU4

Yevgeny Lavrov ylavrov13 at ...9...
Wed Jan 4 22:46:09 CET 2017


Thanks, Stefan :) Now I see some output. I've checked minicom settings for
UART, and it is was set to: 115200 8N1. Changing settings there didn't
help, so I went the suggested alternative path and out commented the
'Exynos_uart_base' constructor's body. Now I get:

kernel initialized
prefetch abort
pc : [<800494e0>] lr : [<0000001a>]
sp : be75af38   ip : 800023e4    fp : be8651a4
r10: be8ab408  r9 : 00000000    r8 : be75af30
r7 : 800c4000   r6 : 80111028    r5 : 00000000    r4 : 80095ce8
r3 : ffff03f4       r2 : 00000000    r1 : 80111028    r0 : 800023e4
Flags: nzCv IRQs off FIQs off Mode HYP_32
Resetting CPU ...
emmc resetting ...
resetting ...

I assume that this is the desired output.
Having this initial step completed, now I have two questions: What does
this output tell me, and where can I go from here?

Thanks

On Wed, Jan 4, 2017 at 2:50 AM, Stefan Kalkowski <
stefan.kalkowski at ...1...> wrote:

> Hi Yevgeny,
>
> congratulations for the first successful steps. Obviously the UART
> configuration is not proper. One potential problem can be the UART
> reference clock setting, original value:
>
>   repos/base/include/spec/odroid_xu/drivers/board_base.h:31:
>
> The reference clock's value is used to calculate the settings for the
> appropriated baudrate. Are you using the baudrate 115200 in your UART
> terminal? Because this is the baudrate the kernel configures the UART to
> use.
>
> Alternatively, you can skip re-configuration of the UART device by
> uncommenting the 'Exynos_uart_base' constructor's body, here:
>
>   repos/base/include/spec/exynos/drivers/uart_base.h:213
>
> Thereby, you leave the UART settings like u-boot configured it.
>
> Regards
> Stefan
>
> On 01/04/2017 01:18 AM, Yevgeny Lavrov wrote:
> > Hello
> >
> > I've followed all the steps suggested above. There were no problems
> > interacting with Linux system on test board via UART cable. It looks
> > like Network boot and fastboot (Odroid-XU4 doesn't have USB otg port)
> > are not supported by Odroid-XU4. After creating hw_odroid_xu build
> > directory, adding suggested RUN_OPT to build.conf file and executing
> > make run/log I end up with the following output:
> >
> > spawn fastboot -s usb:2-1.8 boot var/run/log/uImage
> > < waiting for device >
> > Loading timed out
> > Load step failed, retry.
> > spawn fastboot -s usb:2-1.8 boot var/run/log/uImage
> > < waiting for device >
> >
> > So it appears that fastboot can't find the device. Running *$ sudo
> > fastboot devices -l* returned no results. Probably the reason for this
> > is that I'm connected to Odroid via UART cable.
> > So I gave it another try, using fatload option.
> >
> > 1. Copied *uImage* &*image.elf* from *<build-dir>/var/run/log/* over to
> > the first partition of my MicroSD card
> > 2. Connected to Odroid via UART cable, powered it on and interrupted the
> > boot sequence
> >
> > then:
> > Exynos5422 # fatload mmc 0 0x48000000 uImage
> > there are pending interrupts 0x00000001
> > reading uImage
> >
> > 540242 bytes read
> > Exynos5422 # bootm 0x48000000
> >
> > Result:
> >
> > ## Booting kernel from Legacy Image at 48000000 ...
> >   Image Name:
> >   Image Type: ARM Linux Kernel Image (gzip compressed)
> >   Data Size: 540178 Bytes = 527.5 KiB
> >   Load Address: 80000000
> >   Entry Point: 80000000
> >   Verifying Checksum ... OK
> >   Uncompressing Kernel Image ... OK
> >   Starting kernel ...
> >   7ၷ`�##������@�����������7ٷ`�##��������@�����##��@...470... at ...467...`
> >   `hqioh~�#@@@��@...470... at ...468...``````a�~�##��@...470...@��oi��gp@@��@...470... at ...469...```fg�h#@��@...470...@��
> >   pnia�h##�a`v@��p��h`p@@�q at ...470...#
> >
> > image.elf gave me the same output.
> >
> > Any suggestions on what goes wrong and which way to move next?
> >
> > Regards
> >
> >
> >
> > On Thu, Dec 1, 2016 at 5:08 AM, Stefan Kalkowski
> > <stefan.kalkowski at ...1...
> > <mailto:stefan.kalkowski at ...1...>> wrote:
> >
> >     sorry, I just recognized the SoCs are not fully equal. The first
> Odroid
> >     XU, which we are using is Exynos 5410, and your board uses Exynos
> 5422.
> >     Anyway, I would follow the same approach. Additionally, you can
> compare
> >     memory settings and I/O memory settings of the UART within
> device-tree
> >     specifications of the two boards:
> >
> >
> >     https://raw.githubusercontent.com/torvalds/linux/master/
> arch/arm/boot/dts/exynos5410-odroidxu.dts
> >     <https://raw.githubusercontent.com/torvalds/linux/master/arch/
> arm/boot/dts/exynos5410-odroidxu.dts>
> >
> >     and:
> >
> >
> >     https://raw.githubusercontent.com/torvalds/linux/master/
> arch/arm/boot/dts/exynos5422-odroidxu4.dts
> >     <https://raw.githubusercontent.com/torvalds/linux/master/arch/
> arm/boot/dts/exynos5422-odroidxu4.dts>
> >
> >     Regards
> >     Stefan
> >
> >
> >     On 12/01/2016 10:42 AM, Stefan Kalkowski wrote:
> >     > Hello Yevgeny Lavrov,
> >     >
> >     > there is basic support for the Odroid XU regarding Genode's own
> kernel
> >     > (base-hw). I assume you will be able to start various scenarios
> that
> >     > only use CPU, Timers and UART on the Odroid XU4 as well, because
> they
> >     > use the same SoC.
> >     >
> >     > I would start with connecting a UART cable via the GPIO ports to
> your
> >     > home computer, and test whether you can interact with a Linux
> system
> >     > running on top of your test board. After that, you might play with
> >     > u-boot until you can successfully boot over network, e.g., a Linux
> >     > kernel. Possibly, you cannot even network boot on Odroid XU4, but
> have
> >     > to use fastboot (via USB) instead.
> >     >
> >     > Finally, you start your Genode development by creating a
> >     'hw_odroid_xu'
> >     > build directory, add some RUN_OPT variables to the
> 'etc/build.conf' to
> >     > automatically load the setup and interact with the test board,
> >     > corresponding to the method you are using (either network boot or
> >     > fastboot). Here is some example for the Odroid variant we are
> testing
> >     > nightly:
> >     >
> >     >   RUN_OPT += --include image/uboot
> >     >   RUN_OPT += --include load/fastboot
> >     >   RUN_OPT += --load-fastboot-device 'usb:2-1.8'
> >     >   RUN_OPT += --include log/serial
> >     >
> >     > Then you can start some very basic example, like:
> >     >
> >     >   make run/log
> >     >
> >     > and wait, whether you get some output, and if the test succeeds.
> >     >
> >     > For a general introduction to the build environment and run-script
> >     > automatisms, have a look at the Genode foundations:
> >     >
> >     >      https://genode.org/documentation/genode-foundations-16-05.pdf
> >     <https://genode.org/documentation/genode-foundations-16-05.pdf>
> >     >
> >     > In general, it is a good idea to first skim through this document.
> >     >
> >     > Best regards,
> >     > Stefan
> >     >
> >     > On 12/01/2016 09:12 AM, Yevgeny Lavrov wrote:
> >     >> Greetings
> >     >>
> >     >> I would like to try Genode on Odroid-XU4. I aware that there's no
> >     >> support available for this ARM device yet. However, I want to
> >     give it a
> >     >> try, but I don't know where to start. Can you please point me in
> the
> >     >> right direction so I can find the information that I'll need to
> get
> >     >> started this task?
> >     >>
> >     >> Thanks
> >     >>
> >     >>
> >     >>
> >     ------------------------------------------------------------
> ------------------
> >     >>
> >     >>
> >     >>
> >     >> _______________________________________________
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> >     <https://lists.sourceforge.net/lists/listinfo/genode-main>
> >     >>
> >     >
> >
> >     --
> >     Stefan Kalkowski
> >     Genode Labs
> >
> >     https://github.com/skalk · http://genode.org/
> >
> >     ------------------------------------------------------------
> ------------------
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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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