[genode] base-hw: page-fault error on I.MX6

[Le Guan]

Hi Stefan,
Thanks for your kind reply. My board is I.MX6 SABRE platform for smard
devices. I modified the RAM0_SIZE to 0x40000000 according to the board
reference manual. In addition, I used the building system for hw_wand_quad.
Is there anything wrong? I also add RUN_OPT = --include boot_dir/hw
--include image/uboot to the etc/build.conf in the build directory. The
used bootloader is the Freescale's default U-boot.

The used run script is the unmodified run/printf, which is like this,

build "core init test/printf"

create_boot_directory

install_config {
    <config>
        <parent-provides>
            <service name="LOG"/>
            <service name="RM"/>
        </parent-provides>
        <default-route>
            <any-service> <parent/> </any-service>
        </default-route>
        <start name="test-printf">
            <resource name="RAM" quantum="10M"/>
        </start>
    </config>
}

build_boot_image "core init test-printf"

append qemu_args "-nographic -m 64"

run_genode_until {-1 = -1 = -1} 10

puts "Test succeeded"

The used branch is the official 15.08 master branch (
https://github.com/genodelabs/genode/tree/15.08).

Hope the information helps!
Thanks a lot!
Regards,
Le Guan


On Tue, Sep 29, 2015 at 2:32 AM, Stefan Kalkowski <
stefan.kalkowski at ...1...> wrote:

> Hi,
>
> On 09/28/2015 05:24 PM, Le Guan wrote:
> > Hello everyone,
> > I ran the lastest base-hw on my i.MX6 SABRE, but found that the program
> > crashes randomly, because of page faults. The output is like this:
> > "Pagefault in core thread (core): ip=1001903c fault=70159530"
> >
> > I later figured out that this is because the E bit of the CSPR register
> is
> > randomly changed to 1 when switching to the user mode, but the memory is
> > arranged in LE. This causes the LDR instruction to load a wrong address.
> Do
> > anyone know why does this happen and how to solve it?
> >
>
> Well, that sounds really strange. I'm wondering that you experience such
> problems. We test i.MX6 using the Wandboard all nights without those
> errors. Can you provide a branch to us including a run-script that
> triggers this problem?
>
> Regards
> Stefan
>
> > Thanks in advance!
> > Best,
> > Le Guan
> >
> >
> >
> >
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> >
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>
> --
> Stefan Kalkowski
> Genode Labs
>
> http://www.genode-labs.com/ · http://genode.org/
>
>
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