OpenCorePlatform: Add MaxBIOSVersion option to Generic (#179)

closes acidanthera/bugtracker#1427

Changelog.md

@@ -5,6 +5,7 @@ OpenCore Changelog
 - Added background image support in OpenCanopy
 - Fixed selector boot option choice in OpenCanopy
 - Relaxed selector dimensions for OpenCanopy
+- Add `MaxBIOSVersion` option to `Generic`
 
 #### v0.6.5
 - Fixed installing OpenDuet on protected volumes

Docs/Configuration.tex

@@ -4627,6 +4627,13 @@ be used. Version with macOS specific enhancements can be downloaded from
       a drive with EFI partition being the first partition on the disk.
   \end{itemize}
 
+\item
+  \texttt{MaxBIOSVersion}\\
+  \textbf{Type}: \texttt{plist\ boolean}\\
+  \textbf{Failsafe}: \texttt{false}\\
+  \textbf{Description}: Sets \texttt{BIOSVersion} to \texttt{9999.999.999}, recommended for 
+  legacy Macs with custom SMBIOS to avoid BIOS updates in macOS 11, Big Sur.
+
 \item
   \texttt{SystemMemoryStatus}\\
   \textbf{Type}: \texttt{plist\ string}\\
@@ -4650,7 +4657,7 @@ be used. Version with macOS specific enhancements can be downloaded from
   and assume that system memory is non-upgradable.
 
 \item
-  \texttt{ProcessorType}
+  \texttt{ProcessorType}\\
   \textbf{Type}: \texttt{plist\ integer}\\
   \textbf{Failsafe}: \texttt{0} (Automatic)\\
   \textbf{Description}: Refer to SMBIOS \texttt{ProcessorType}.

Docs/Differences/Differences.tex

 \documentclass[]{article}
 %DIF LATEXDIFF DIFFERENCE FILE
-%DIF DEL PreviousConfiguration.tex   Tue Jan  5 10:48:23 2021
-%DIF ADD ../Configuration.tex        Sun Jan 10 13:38:23 2021
+%DIF DEL PreviousConfiguration.tex   Tue Jan  5 20:10:35 2021
+%DIF ADD ../Configuration.tex        Sun Jan 10 23:34:57 2021
 
 \usepackage{lmodern}
 \usepackage{amssymb,amsmath}
@@ -4688,7 +4688,15 @@ be used. Version with macOS specific enhancements can be downloaded from
   \end{itemize}
 
 \item
-  \texttt{SystemMemoryStatus}\\
+  \DIFaddbegin \texttt{\DIFadd{MaxBIOSVersion}}\\
+  \textbf{\DIFadd{Type}}\DIFadd{: }\texttt{\DIFadd{plist\ boolean}}\\
+  \textbf{\DIFadd{Failsafe}}\DIFadd{: }\texttt{\DIFadd{false}}\\
+  \textbf{\DIFadd{Description}}\DIFadd{: Sets }\texttt{\DIFadd{BIOSVersion}} \DIFadd{to }\texttt{\DIFadd{9999.999.999}}\DIFadd{, recommended for 
+  legacy Macs with custom SMBIOS to avoid BIOS updates in macOS 11, Big Sur.
+}
+
+\item
+  \DIFaddend \texttt{SystemMemoryStatus}\\
   \textbf{Type}: \texttt{plist\ string}\\
   \textbf{Failsafe}: \texttt{Auto}\\
   \textbf{Description}: Indicates whether system memory is upgradable in \texttt{PlatformFeature}.
@@ -4710,8 +4718,8 @@ be used. Version with macOS specific enhancements can be downloaded from
   and assume that system memory is non-upgradable.
 
 \item
-  \texttt{ProcessorType}
-  \textbf{Type}: \texttt{plist\ integer}\\
+  \texttt{ProcessorType}\DIFaddbegin \\
+  \DIFaddend \textbf{Type}: \texttt{plist\ integer}\\
   \textbf{Failsafe}: \texttt{0} (Automatic)\\
   \textbf{Description}: Refer to SMBIOS \texttt{ProcessorType}.
 \item

Docs/Sample.plist

@@ -991,6 +991,8 @@
 		<dict>
 			<key>AdviseWindows</key>
 			<false/>
+			<key>MaxBIOSVersion</key>
+			<false/>
 			<key>MLB</key>
 			<string>M0000000000000001</string>
 			<key>ProcessorType</key>

Docs/SampleCustom.plist

@@ -1022,6 +1022,8 @@
 		<dict>
 			<key>AdviseWindows</key>
 			<false/>
+			<key>MaxBIOSVersion</key>
+			<false/>
 			<key>MLB</key>
 			<string></string>
 			<key>ProcessorType</key>

Include/Acidanthera/Library/OcConfigurationLib.h

@@ -451,7 +451,8 @@ typedef enum {
   _(UINT16                      , ProcessorType      ,     , 0                                            , () )                   \
   _(UINT8                       , Rom                , [6] , {0}                                          , () )                   \
   _(BOOLEAN                     , SpoofVendor        ,     , FALSE                                        , () )                   \
-  _(BOOLEAN                     , AdviseWindows      ,     , FALSE                                        , () )
+  _(BOOLEAN                     , AdviseWindows      ,     , FALSE                                        , () )                   \
+  _(BOOLEAN                     , MaxBIOSVersion     ,     , FALSE                                        , () )
   OC_DECLARE (OC_PLATFORM_GENERIC_CONFIG)
 
 #define OC_PLATFORM_DATA_HUB_CONFIG_FIELDS(_, __) \

Library/OcConfigurationLib/OcConfigurationLib.c

@@ -548,6 +548,7 @@ OC_SCHEMA
 mPlatformConfigurationGenericSchema[] = {
   OC_SCHEMA_BOOLEAN_IN ("AdviseWindows",      OC_GLOBAL_CONFIG, PlatformInfo.Generic.AdviseWindows),
   OC_SCHEMA_STRING_IN  ("MLB",                OC_GLOBAL_CONFIG, PlatformInfo.Generic.Mlb),
+  OC_SCHEMA_BOOLEAN_IN ("MaxBIOSVersion",     OC_GLOBAL_CONFIG, PlatformInfo.Generic.MaxBIOSVersion),
   OC_SCHEMA_INTEGER_IN ("ProcessorType",      OC_GLOBAL_CONFIG, PlatformInfo.Generic.ProcessorType),
   OC_SCHEMA_DATAF_IN   ("ROM",                OC_GLOBAL_CONFIG, PlatformInfo.Generic.Rom),
   OC_SCHEMA_BOOLEAN_IN ("SpoofVendor",        OC_GLOBAL_CONFIG, PlatformInfo.Generic.SpoofVendor),

Platform/OpenCore/OpenCorePlatform.c

@@ -373,6 +373,12 @@ OcPlatformUpdateSmbios (
         DEBUG ((DEBUG_WARN, "OC: Invalid SMBIOS system memory status %a\n", SystemMemoryStatus));
       }
     }
+    //
+    // Override default BIOSVersion.
+    //
+    if (Config->PlatformInfo.Generic.MaxBIOSVersion) {
+      Data.BIOSVersion = "9999.999.999";
+    }
 
     if (MacInfo->DataHub.SmcRevision != NULL) {
       OcSmbiosGetSmcVersion (MacInfo->DataHub.SmcRevision, SmcVersion);