Thanks for your comments. I have today tracked the paging problem down to a need to flush the TLBs before enabling the MMU. This was done via the TLBIALLH. At the moment I've done in in xen head.s but maybe better to be done as part of u-boot as it seems to be an AM57xx uboot problem rather than a generic xen one. Iain
On Wednesday, 31 January 2018 22:09:04 UTC, Hee-cheol Yang wrote: > > Hello I've tried similar job in exynos and ARM Fastmodel simulator, facing > similar issue. > > In my experiences, many issues are related to ARM TZ, not VE. Many > firmwares such as BL0 disable MMU functionality for hypervisor in Secure > world and jump to Normal world before they pass the processor's control to > bootloader like uboot. > So you need to check whether the TZ settings are done correctly. > > Most SOC vendors provide such firmware in binary. For example, You can get > Xen for Exynos firmware in Xen wiki. Also, please check this repository : > > https://github.com/hcyang1012/ARM_Hypervisor > > I'm not sure TI supports such functionality. But it is worth to check it. > > Best regards > Heecheol Yang > > 삼성 갤럭시 스마트폰에서 보냈습니다. > > > -------- 원본 이메일 -------- > 보낸 사람: drhun...@gmail.com <javascript:> > 날짜: 18/2/1 오전 6:44 (GMT+09:00) > 받은 사람: BeagleBoard <beagl...@googlegroups.com <javascript:>> > 제목: [beagleboard] X15 - running xen hypervisor > > Hi, > I am trying to get xen hypervisor to run on an X15 but I have a prefetch > abort when the first instruction at a virtual address is fetched. The > paging tables appear to be being setup correctly. > > I am using u-boot v2017.01 to boot the xen image. u-boot by default is in > hypervisor mode with LPAE enabled which is as far as I can see what xen > needs. > > So, to my questions. > - Has anyone tried this before? > - does anyone know of a reason why after running u-boot the A15 would be > in hypervisor mode but have some side effect that means just writing to > HTTBR and HSCTLR is not sufficient to get the MMU functioning correctly? > > Thanks, Iain > > -- > For more options, visit http://beagleboard.org/discuss > <https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fbeagleboard.org%2Fdiscuss&data=02%7C01%7C%7C6493a703abaf4096233808d568f3df99%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636530318985402106&sdata=KqFciQLSJbxxnrNvv36un0vQRl4V827cqE7%2BdnB7%2B2c%3D&reserved=0> > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard...@googlegroups.com <javascript:>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/7475a00d-e52e-44e6-b00c-de3ef10cff93%40googlegroups.com > > <https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgroups.google.com%2Fd%2Fmsgid%2Fbeagleboard%2F7475a00d-e52e-44e6-b00c-de3ef10cff93%2540googlegroups.com%3Futm_medium%3Demail%26utm_source%3Dfooter&data=02%7C01%7C%7C6493a703abaf4096233808d568f3df99%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636530318985402106&sdata=1ShdqCiTnlXA6so3X2ZvGlO4ad1dc6Zi9hi3vCASwTE%3D&reserved=0> > . > For more options, visit https://groups.google.com/d/optout > <https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgroups.google.com%2Fd%2Foptout&data=02%7C01%7C%7C6493a703abaf4096233808d568f3df99%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636530318985402106&sdata=67nJHARSPSL2aUOig5AcapaIewpoiC9LSYLocGQQN2k%3D&reserved=0> > . > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/32db26c7-4cc7-484d-98a9-3ea7129a33f9%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
