On 08/16/2012 04:46 PM, Lennart Sorensen wrote: > On Thu, Aug 16, 2012 at 04:30:39PM +0200, Charles Retailleau wrote: >> Hi all, >> The patching/compilation/installation steps seem fine. >> But at the end I cannot have any Xenomai software running on the >> P1010RDB (I tried most of the provided test SW). >> >> I focused on latency and tried to debug it. I get that: >> >> Program received signal SIGILL, Illegal instruction. >> 0x0ffde120 in __xn_rdtsc () from ....xenomai/lib/libnative.so.3 >> >> It appears that the 'mftb/mftbu' instructions >> are in cause (cf. the small test in attachment, the 1st part works but >> not the mftb test). >> Furthermore when I check the core e500 ref manual >> http://cache.freescale.com/files/32bit/doc/ref_manual/E500CORERM.pdf >> MFTB appears has NOT being part of the instruction list. >> >> Yet, Xenomai seems to work on P1020RDB which has the same core, so I'm >> confused... >> What did I do wrong ? >> >> I'm using >> Xenomai 2.6.1, >> linux 3.2.21 configured with mpc85xx_defconfig (default options for >> the rest of it), >> Freescale's SDK 1.1.2 (that's the main difference between me and >> Lukasz Zemla's config on P1020RDB, so I'm trying to get the latest 1.2) > > mftb is a phased out instruction according to the powerpc 2.06 rev > B documentation. mfspr is the prefered instruction to use instead on > everything other than the old 603 and POWER3 CPUs. > > It is quite possible the e500 hence doesn't support it. According to > http://cache.freescale.com/files/32bit/doc/app_note/AN3445.pdf it > specificly does NOT have mftb. Neither does the e300 core which is what > we are using with xenomai (MPC8360e specificly).
It uses an e500v2 core. I use the ELDK 5.2.1 "powerpc-e500v2" for the P2020. Wolfgang. _______________________________________________ Xenomai mailing list Xenomai@xenomai.org http://www.xenomai.org/mailman/listinfo/xenomai
