MdeModulePkg: introduce PcdPciDisableBusEnumeration
Platforms such as Xen already enumerates PCI bridges and devices. Use this PCD to control EDK2 behavior. PcdPciDisableBusEnumeration is placed under [PcdsFixedAtBuild, PcdsPatchableInModule, PcdsDynamic, PcdsDynamicEx], so that it is possible to alter it during runtime. The default setting of this PCD is false (allow full PCI enumeration) to preserve the same behavior before this change. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Wei Liu <wei.liu2@citrix.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Michael Kinney <michael.d.kinney@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14940 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -108,6 +108,7 @@
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gEfiMdeModulePkgTokenSpaceGuid.PcdSrIovSupport
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gEfiMdeModulePkgTokenSpaceGuid.PcdAriSupport
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gEfiMdeModulePkgTokenSpaceGuid.PcdMrIovSupport
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gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration
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# [Event]
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# ##
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