I'm about to test this on our setup. Just to be sure, does your startup code perform the register initialization required by the CCM-R4F? I added that to arm/shared/start/start.S a few months ago.
On Mon, Nov 23, 2015 at 5:26 PM, Pavel Pisa <p...@cmp.felk.cvut.cz> wrote: > Hello Martin, > > On Monday 23 of November 2015 15:19:40 Martin Galvan wrote: >> Hi Pavel, I'll give it a look. What issues are you having? Did you see >> this problem on the RTEMS samples (e.g. HelloWorld, Ticker) as well? > > we have checked functionality with ticker and our complete LwIP application. > > We observed problem for ticker (we run it from SDRAM) as well. > Start up messages from Init task are printed. Then three individual ticker > threads starts but then system locks. We have tried to put hardware > breakpoints all exception handlers (undef, prefetch, abort, ...) but we have > not catch anything. CPU goes to error state (ERROR let lights). > I am suspicious that problem appears when the fist started ticker thread > is to be scheduled again and VFP context restoration fails for some reason. > But I need to find time for more investigation later. We have replaced > our RTEMS loader on HDK boards we pose to run other projects today. > The final ERROR state can be result of failed CPU reset due to active POM. > Actual problem source can be VFP contex switch code or some register > missing initialization. May it be, the fault is not at restore but during > save when lockstep founds discrepancy during save to memory. > May it be, your code sets the registers which our does not. > But generally it seems that care is taken of d0 to d15 in HalCoGen > the startup code which we use > > https://github.com/hornmich/tms570ls3137-hdk-sdram/blob/master/SDRAM_SCI_configuration/source/sys_core.asm > > Testing in your setup would be significant help because it is hint > if this is problem in our setup/tools or mainline change. > I need to test code with our previous toolchain version we have used > before summer as well. > > Best wishes, > > Pavel -- Martin Galvan Software Engineer Taller Technologies Argentina San Lorenzo 47, 3rd Floor, Office 5 Córdoba, Argentina Phone: 54 351 4217888 / +54 351 4218211 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
