Dear Experts, I am facing SError exception during UEFI bring-up. At boot , secure f/w starts in EL3 and loads UEFI image to DDR. After this secure f/w passes control to UEFI in EL2.
I debugged and manifest the problem by adding below lines in UEFI PrePi entry point(ModuleEntryPoint.S) ASM_FUNC(_ModuleEntryPoint) +msr daifclr,#4 +isb +mrs x0, hcr_el2 +ldr x1, =0x08000000 +orr x0, x0, x1 +msr hcr_el2, x0 +isb Once exception occurs than ELR_EL2 point to 'isb' instruction and ESR_EL2 is SError Exception syndrome. Could you please suggest if this is UEFI problem or Secure f/w issue? Additionally, TGE bit is set in hcr_el2 three times during PrePei phase(ArmPlatformPkg/PrePi/AArch64/ArchPrePi.c),DxeMain(),ArmCpuDxe. Please explain the purpose of setting it or require to be fixed? Regards, Vabhav _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
