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OvmfPkg/AcpiTimerLib: don't use possibly unset PMBA register (PEI phase) 

We should store the right value to the PMBA (if the PMBA needs
initialization) before setting mAcpiTimerIoAddr from the PMBA.

Cc: Gabriel Somlo <somlo@cmu.edu>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Fixes: f122712b42
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
This commit is contained in:
Laszlo Ersek 2016-05-17 16:08:23 +02:00
parent b41ef32518
commit ac759060e6
1 changed files with 1 additions and 2 deletions
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3
OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.c
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@ -63,8 +63,6 @@ AcpiTimerLibConstructor (
return RETURN_UNSUPPORTED;
}
mAcpiTimerIoAddr = (PciRead32 (Pmba) & ~PMBA_RTE) + ACPI_TIMER_OFFSET;
//
// Check to see if the Power Management Base Address is already enabled
//
@ -81,6 +79,7 @@ AcpiTimerLibConstructor (
PciOr8 (AcpiCtlReg, AcpiEnBit);
}
mAcpiTimerIoAddr = (PciRead32 (Pmba) & ~PMBA_RTE) + ACPI_TIMER_OFFSET;
return RETURN_SUCCESS;
}