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From: "Marcin Juszkiewicz" <marcin.juszkiewicz@linaro.org>
To: devel@edk2.groups.io
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>,
	Leif Lindholm <quic_llindhol@quicinc.com>,
	Rebecca Cran <rebecca@bsdio.com>,
	Sami Mujawar <sami.mujawar@arm.com>,
	Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Subject: [PATCH 4/7] ArmPkg: skip empty system registers in ArmCpuInfo
Date: Thu,  4 May 2023 15:24:37 +0100
Message-Id: <20230504142440.827531-5-marcin.juszkiewicz@linaro.org>
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In-Reply-To: <20230504142440.827531-1-marcin.juszkiewicz@linaro.org>
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If system register is empty (value =3D=3D 0) then do not display informat=
ion
from it.

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
---
 ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c | 35 +++++++++++++++-------
 1 file changed, 25 insertions(+), 10 deletions(-)

diff --git a/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c b/ArmPkg/Applicat=
ion/ArmCpuInfo/ArmCpuInfo.c
index 982714ef6ca0..9d0d164774ff 100644
--- a/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c
+++ b/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c
@@ -2407,23 +2407,38 @@ UefiMain (
=20
   HandleAa64Mmfr0 (Aa64Mmfr0);
   PrintSpacer ();
-  HandleAa64Mmfr1 (Aa64Mmfr1, Aa64Pfr0);
-  PrintSpacer ();
-  HandleAa64Mmfr2 (Aa64Mmfr2);
=20
-  PrintSpacer ();
+  if (Aa64Mmfr1) {
+    HandleAa64Mmfr1 (Aa64Mmfr1, Aa64Pfr0);
+    PrintSpacer ();
+  }
+
+  if (Aa64Mmfr2) {
+    HandleAa64Mmfr2 (Aa64Mmfr2);
+    PrintSpacer ();
+  }
+
   HandleAa64Pfr0 (Aa64Pfr0, Aa64Pfr1);
   PrintSpacer ();
-  HandleAa64Pfr1 (Aa64Pfr1);
=20
-  PrintSpacer ();
+  if (Aa64Pfr1) {
+    HandleAa64Pfr1 (Aa64Pfr1);
+    PrintSpacer ();
+  }
+
   HandleAa64Isar0 (Aa64Isar0);
   PrintSpacer ();
-  HandleAa64Isar1 (Aa64Isar1);
-  PrintSpacer ();
-  HandleAa64Isar2 (Aa64Isar2);
=20
-  PrintSpacer ();
+  if (Aa64Isar1) {
+    HandleAa64Isar1 (Aa64Isar1);
+    PrintSpacer ();
+  }
+
+  if (Aa64Isar2) {
+    HandleAa64Isar2 (Aa64Isar2);
+    PrintSpacer ();
+  }
+
   HandleAa64Dfr0 (Aa64Dfr0);
=20
   return EFI_SUCCESS;
--=20
2.40.1