From: Harry Liebel <Harry.Liebel@arm.com>
Date: Wed, 24 Jul 2013 11:54:02 +0000 (+0000)
Subject: ArmPkg/BdsLib: AArch64 MPCore Linux 'spin-table' boot cache fix
X-Git-Tag: edk2-stable201903~12405
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=63e25b68cb1bf16b00ebb71cc2d02c65b5fadbeb;p=mirror_edk2.git

ArmPkg/BdsLib: AArch64 MPCore Linux 'spin-table' boot cache fix

Clean data cache after initialising mailboxes.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Harry Liebel <Harry.Liebel@arm.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14501 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/ArmPkg/Library/BdsLib/AArch64/BdsLinuxLoader.c b/ArmPkg/Library/BdsLib/AArch64/BdsLinuxLoader.c
index b66d96f05c..887058bafe 100644
--- a/ArmPkg/Library/BdsLib/AArch64/BdsLinuxLoader.c
+++ b/ArmPkg/Library/BdsLib/AArch64/BdsLinuxLoader.c
@@ -298,9 +298,6 @@ BdsBootLinuxFdt (
     // Update the MailboxBase variable used in the pen code
     *(UINTN*)(PenBase + ((UINTN)&AsmMailboxbase - (UINTN)&SecondariesPenStart)) = MailBoxBase;
 
-    // Flush caches to make sure our pen gets to mem before we free the cores.
-    ArmCleanDataCache();
-
     for (Index=0; Index < gST->NumberOfTableEntries; Index++) {
       // Check for correct GUID type
       if (CompareGuid (&gArmMpCoreInfoGuid, &(gST->ConfigurationTable[Index].VendorGuid))) {
@@ -323,6 +320,8 @@ BdsBootLinuxFdt (
         }
       }
     }
+    // Flush caches to make sure our pen gets to mem before we free the cores.
+    ArmCleanDataCache();
   }
 
   // By setting address=0 we leave the memory allocation to the function