mirror of https://github.com/acidanthera/audk.git
065ae7d717
The 'universal' PCI bus driver in MdeModulePkg contains a quirk to degrade 64-bit PCI MMIO BARs to 32-bit in the presence of an option ROM on the same PCI controller. This quirk is highly specific to not just the X64 architecture in general, but to the PC platform in particular, given that only X64 platforms that require legacy PC BIOS compatibility require it. However, making the quirk dependent on the presence of the legacy BIOS protocol met with resistance, due to the fact that it introduces a dependency on the IntelFrameworkModulePkg package. So instead, make the quirk configurable, by introducing a feature flag PCD 'PcdPciDegradeResourceForOptionRom' which defaults to TRUE only for X64. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com> |
||
|---|---|---|
| .. | ||
| Ata | ||
| I2c/I2cDxe | ||
| Isa | ||
| Pci | ||
| Scsi | ||
| Sd | ||
| Ufs | ||
| Usb | ||