[edk2-devel] [PATCH v3 1/1] ArmPlatformPkg/PrePeiCore: Print the firmware version early in boot

[Rebecca Cran]

Copy code from PrePi to PrePeiCore that prints the firmware version
and build date early in the boot process.

Signed-off-by: Rebecca Cran <rebe...@quicinc.com>
Reviewed-by: Sami Mujawar <sami.muja...@arm.com>
Tested-by: Oliver Steffen <ostef...@redhat.com>
---
 ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf  |  3 +++
 ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf |  3 +++
 ArmPlatformPkg/PrePeiCore/PrePeiCore.c          | 14 ++++++++++++++
 3 files changed, 20 insertions(+)

diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf 
b/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf
index a5b4722459d1..4a3112b58dcb 100644
--- a/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf
+++ b/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf
@@ -54,6 +54,9 @@ [Ppis]
   gEfiTemporaryRamSupportPpiGuid
   gArmMpCoreInfoPpiGuid
 
+[Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareVersionString
+
 [FeaturePcd]
   gArmPlatformTokenSpaceGuid.PcdSendSgiToBringUpSecondaryCores
 
diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf 
b/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf
index 466a2b01c384..ab5bf1dac2d8 100644
--- a/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf
+++ b/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf
@@ -52,6 +52,9 @@ [LibraryClasses]
 [Ppis]
   gEfiTemporaryRamSupportPpiGuid
 
+[Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareVersionString
+
 [FeaturePcd]
   gArmPlatformTokenSpaceGuid.PcdSendSgiToBringUpSecondaryCores
 
diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCore.c 
b/ArmPlatformPkg/PrePeiCore/PrePeiCore.c
index 9c4b25df953d..1d4f6969b660 100644
--- a/ArmPlatformPkg/PrePeiCore/PrePeiCore.c
+++ b/ArmPlatformPkg/PrePeiCore/PrePeiCore.c
@@ -11,6 +11,8 @@
 #include <Library/CacheMaintenanceLib.h>
 #include <Library/DebugAgentLib.h>
 #include <Library/ArmLib.h>
+#include <Library/PrintLib.h>
+#include <Library/SerialPortLib.h>
 
 #include "PrePeiCore.h"
 
@@ -58,6 +60,9 @@ CEntryPoint (
   IN  EFI_PEI_CORE_ENTRY_POINT  PeiCoreEntryPoint
   )
 {
+  CHAR8  Buffer[100];
+  UINTN  CharCount;
+
   // Data Cache enabled on Primary core when MMU is enabled.
   ArmDisableDataCache ();
   // Invalidate instruction cache
@@ -93,6 +98,15 @@ CEntryPoint (
     // Invoke "ProcessLibraryConstructorList" to have all library constructors
     // called.
     ProcessLibraryConstructorList ();
+    CharCount = AsciiSPrint (
+                  Buffer,
+                  sizeof (Buffer),
+                  "UEFI firmware (version %s built at %a on %a)\n\r",
+                  (CHAR16 *)PcdGetPtr (PcdFirmwareVersionString),
+                  __TIME__,
+                  __DATE__
+                  );
+    SerialPortWrite ((UINT8 *)Buffer, CharCount);
 
     // Initialize the Debug Agent for Source Level Debugging
     InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, NULL, NULL);
-- 
2.30.2



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