OpenCoreKernel: Implement IncreasePciBarSize support

Changelog.md

@@ -24,6 +24,8 @@ OpenCore Changelog
 - Added `WriteFlash` NVRAM option to enable writing variables in `Add`
 - Added `LegacyOverwrite` NVRAM option to allow overwriting variables by nvram.plist
 - Added `AppleXcpmForceBoost` kernel quirk to maximise select Xeon performance
+- Bundled NvmExpressDxe and XhciDxe drivers for platforms that need them
+- Added `IncreasePciBarSize` kernel quirk for select platforms with PCI space issues
 
 #### v0.5.3
 - Update builtin firmware versions

Docs/Configuration.tex

@@ -1887,6 +1887,15 @@ blocking.
   \emph{Note}: This option should be avoided whenever possible. Modern firmwares
   usually have compatible AHCI controllers.
 
+\item
+  \texttt{IncreasePciBarSize}\\
+  \textbf{Type}: \texttt{plist\ boolean}\\
+  \textbf{Failsafe}: \texttt{false}\\
+  \textbf{Description}: Increases 32-bit PCI bar size in IOPCIFamily from 1 to 4 GBs.
+
+  \emph{Note}: This option should be avoided whenever possible. In general the necessity
+  of this option means misconfigured or broken firmware.
+
 \item
   \texttt{LapicKernelPanic}\\
   \textbf{Type}: \texttt{plist\ boolean}\\

Docs/Differences/Differences.tex

@@ -1,7 +1,7 @@
 \documentclass[]{article}
 %DIF LATEXDIFF DIFFERENCE FILE
 %DIF DEL PreviousConfiguration.tex   Tue Dec 10 15:40:50 2019
-%DIF ADD ../Configuration.tex        Sun Jan 12 17:07:53 2020
+%DIF ADD ../Configuration.tex        Sun Jan 12 22:14:21 2020
 
 \usepackage{lmodern}
 \usepackage{amssymb,amsmath}
@@ -1978,7 +1978,18 @@ blocking.
   usually have compatible AHCI controllers.
 
 \item
-  \texttt{LapicKernelPanic}\\
+  \DIFaddbegin \texttt{\DIFadd{IncreasePciBarSize}}\\
+  \textbf{\DIFadd{Type}}\DIFadd{: }\texttt{\DIFadd{plist\ boolean}}\\
+  \textbf{\DIFadd{Failsafe}}\DIFadd{: }\texttt{\DIFadd{false}}\\
+  \textbf{\DIFadd{Description}}\DIFadd{: Increases 32-bit PCI bar size in IOPCIFamily from 1 to 4 GBs.
+}
+
+  \emph{\DIFadd{Note}}\DIFadd{: This option should be avoided whenever possible. In general the necessity
+  of this option means misconfigured or broken firmware.
+}
+
+\item
+  \DIFaddend \texttt{LapicKernelPanic}\\
   \textbf{Type}: \texttt{plist\ boolean}\\
   \textbf{Failsafe}: \texttt{false}\\
   \textbf{Description}: Disables kernel panic on LAPIC interrupts.

Docs/Sample.plist

@@ -533,6 +533,8 @@
 			<false/>
 			<key>ExternalDiskIcons</key>
 			<false/>
+			<key>IncreasePciBarSize</key>
+			<false/>
 			<key>LapicKernelPanic</key>
 			<false/>
 			<key>PanicNoKextDump</key>

Docs/SampleFull.plist

@@ -533,6 +533,8 @@
 			<false/>
 			<key>ExternalDiskIcons</key>
 			<false/>
+			<key>IncreasePciBarSize</key>
+			<false/>
 			<key>LapicKernelPanic</key>
 			<false/>
 			<key>PanicNoKextDump</key>

Platform/OpenCore/OpenCoreKernel.c

@@ -430,6 +430,10 @@ OcKernelApplyPatches (
       PatchAppleIoMapperSupport (Context);
     }
 
+    if (Config->Kernel.Quirks.IncreasePciBarSize) {
+      PatchIncreasePciBarSize (Context);     
+    }
+
     if (Config->Kernel.Quirks.CustomSmbiosGuid) {
       PatchCustomSmbiosGuid (Context);
     }