On Mon, Nov 16, 2015 at 08:08:18PM +0100, Ard Biesheuvel wrote: > On 16 November 2015 at 19:41, Vladimir Olovyannikov > <volov...@broadcom.com> wrote: > >> -----Original Message----- > >> From: Ard Biesheuvel [mailto:ard.biesheu...@linaro.org] > >> Sent: Monday, November 16, 2015 10:28 AM > >> To: Vladimir Olovyannikov > >> Cc: Mark Rutland; edk2-devel@lists.01.org > >> Subject: Re: [edk2] Armv8 64bit: System error booting linux from the UEFI > >> > > [...] > >> > > >> > Async abort occurs in ArmWriteVBar() called by InitializeDebugAgent(), > >> DebugAgentSymbolsBaseLib.c. > >> > Prior to this call I can easily enable async aborts with no "bad" > >> consequences. > >> > > >> > Here is the exact instruction causing the SError in the ArmWriteVBar(): > >> > 2: msr vbar_el2, x0 // Set the Address of the EL2 Vector > >> > Table in the > >> VBAR register > >> > >> Are you using a release build? If so, you should check whether x0 is > >> correctly aligned to 2 KB. The ASSERT() tries to establish that, but > >> it is only active in DEBUG builds. > >> > > Ard, it is a DEBUG build. > > OK. So that should confirm that x0 is aligned to 2 KB. > > Perhaps the write to VBAR_EL2 enables the delivery in some way. Could > you check the A bit in ESR_EL1 before and after?
Do you mean in DAIF / PSTATE? I'm not sure what ESR_ELx would have to do with this. Thanks, Mark. _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
