Hello Le Guan, On 09/29/2015 11:18 PM, Le Guan wrote: > Hi Stefan, > I think I have found the problem. > In the file repos/base-hw/src/core/spec/arm_v7/mode_transition.s, the > assembly "msr spsr, r0" is alway compiled to "msr spsr_cf, r0", which > leaves [23:8] untouched. This include the E bit. Whereas the used chip > seems has a random spsr left in SVC mode after power on. > I have patched the instruction to "msr spsr_cxfs, r0". Now the system runs > well. > Hope this helps. >
Cool, thank you very much for discovering that shortcoming! We'll fix that bug soon. Regards Stefan > Thanks. > Regards, > Le Guan > > On Tue, Sep 29, 2015 at 1:00 PM, Le Guan <[email protected]> wrote: > >> 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 < >> [email protected]> 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 >>>> >>>> >>>> >>>> >>> ------------------------------------------------------------------------------ >>>> >>>> >>>> >>>> _______________________________________________ >>>> genode-main mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/genode-main >>>> >>> >>> -- >>> Stefan Kalkowski >>> Genode Labs >>> >>> http://www.genode-labs.com/ · http://genode.org/ >>> >>> >>> ------------------------------------------------------------------------------ >>> _______________________________________________ >>> genode-main mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/genode-main >>> >> >> > > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > genode-main mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/genode-main > -- Stefan Kalkowski Genode Labs http://www.genode-labs.com/ · http://genode.org/ ------------------------------------------------------------------------------ _______________________________________________ genode-main mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/genode-main
