mem: Add TlbiExtSync packet type

JIRA: https://gem5.atlassian.net/browse/GEM5-1097

Change-Id: I45435326daca599ac973c747777ecac52bf7fd33
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/57290
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/mem/packet.cc

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011-2019 ARM Limited
+ * Copyright (c) 2011-2019, 2021 ARM Limited
  * All rights reserved
  *
  * The license below extends only to copyright in the software and shall
@@ -232,6 +232,7 @@ MemCmd::commandInfo[] =
     { {IsRead, IsRequest, NeedsResponse}, HTMReqResp, "HTMReq" },
     { {IsRead, IsResponse}, InvalidCmd, "HTMReqResp" },
     { {IsRead, IsRequest}, InvalidCmd, "HTMAbort" },
+    { {IsRequest}, InvalidCmd, "TlbiExtSync" },
 };
 
 AddrRange

src/mem/packet.hh

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2019 ARM Limited
+ * Copyright (c) 2012-2019, 2021 ARM Limited
  * All rights reserved
  *
  * The license below extends only to copyright in the software and shall
@@ -144,6 +144,8 @@ class MemCmd
         HTMReq,
         HTMReqResp,
         HTMAbort,
+        // Tlb shootdown
+        TlbiExtSync,
         NUM_MEM_CMDS
     };