From 93d69eb9393cf05af90676253875c59c1bec67fd Mon Sep 17 00:00:00 2001

From: Laszlo Ersek <lersek@redhat.com>

Date: Wed, 14 Oct 2015 13:59:20 +0200

Subject: ArmPlatformPkg: PrePeiCore: write early hello message to the serial

 port (RH)

The FixedPcdGetSize() macro expands to an integer constant, therefore an

optimizing compiler can eliminate the new code, if the platform DSC

doesn't override the empty string (size=1) default of

PcdEarlyHelloMessage.

RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1270279

Downstream only:

<http://thread.gmane.org/gmane.comp.bios.edk2.devel/2996/focus=3433>.

Notes about the 20160608b-988715a -> 20170228-c325e41585e3 rebase:

- no changes

Notes about the 20170228-c325e41585e3 -> 20171011-92d07e48907f rebase:

- no changes

Contributed-under: TianoCore Contribution Agreement 1.0

Signed-off-by: Laszlo Ersek <lersek@redhat.com>

(cherry picked from commit b16c4c505ce0e27305235533eac9236aa66f132e)

(cherry picked from commit 742e5bf6d5ce5a1e73879d6e5c0dd00feda7a9ac)

---

 ArmPlatformPkg/PrePeiCore/MainMPCore.c          | 5 +++++

 ArmPlatformPkg/PrePeiCore/MainUniCore.c         | 5 +++++

 ArmPlatformPkg/PrePeiCore/PrePeiCore.h          | 1 +

 ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf  | 2 ++

 ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf | 2 ++

 5 files changed, 15 insertions(+)

diff --git a/ArmPlatformPkg/PrePeiCore/MainMPCore.c b/ArmPlatformPkg/PrePeiCore/MainMPCore.c

index dc47adb..cbd7223 100644

--- a/ArmPlatformPkg/PrePeiCore/MainMPCore.c

+++ b/ArmPlatformPkg/PrePeiCore/MainMPCore.c

@@ -117,6 +117,11 @@ PrimaryMain (

   UINTN                       TemporaryRamBase;

   UINTN                       TemporaryRamSize;

+  if (FixedPcdGetSize (PcdEarlyHelloMessage) > 1) {

+    SerialPortWrite (FixedPcdGetPtr (PcdEarlyHelloMessage),

+      FixedPcdGetSize (PcdEarlyHelloMessage) - 1);

+  }

+

   CreatePpiList (&PpiListSize, &PpiList);

   // Enable the GIC Distributor

diff --git a/ArmPlatformPkg/PrePeiCore/MainUniCore.c b/ArmPlatformPkg/PrePeiCore/MainUniCore.c

index 134a469..af39fc0 100644

--- a/ArmPlatformPkg/PrePeiCore/MainUniCore.c

+++ b/ArmPlatformPkg/PrePeiCore/MainUniCore.c

@@ -35,6 +35,11 @@ PrimaryMain (

   UINTN                       TemporaryRamBase;

   UINTN                       TemporaryRamSize;

+  if (FixedPcdGetSize (PcdEarlyHelloMessage) > 1) {

+    SerialPortWrite (FixedPcdGetPtr (PcdEarlyHelloMessage),

+      FixedPcdGetSize (PcdEarlyHelloMessage) - 1);

+  }

+

   CreatePpiList (&PpiListSize, &PpiList);

   // Adjust the Temporary Ram as the new Ppi List (Common + Platform Ppi Lists) is created at

diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCore.h b/ArmPlatformPkg/PrePeiCore/PrePeiCore.h

index 1608946..bf843d7 100644

--- a/ArmPlatformPkg/PrePeiCore/PrePeiCore.h

+++ b/ArmPlatformPkg/PrePeiCore/PrePeiCore.h

@@ -21,6 +21,7 @@

 #include <Library/DebugLib.h>

 #include <Library/IoLib.h>

 #include <Library/PcdLib.h>

+#include <Library/SerialPortLib.h>

 #include <PiPei.h>

 #include <Ppi/TemporaryRamSupport.h>

diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf b/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf

index ecdbccb..dd3447c 100644

--- a/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf

+++ b/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf

@@ -72,6 +72,8 @@

   gArmPlatformTokenSpaceGuid.PcdCPUCorePrimaryStackSize

   gArmPlatformTokenSpaceGuid.PcdCPUCoreSecondaryStackSize

+  gArmPlatformTokenSpaceGuid.PcdEarlyHelloMessage

+

   gArmTokenSpaceGuid.PcdGicDistributorBase

   gArmTokenSpaceGuid.PcdGicInterruptInterfaceBase

   gArmTokenSpaceGuid.PcdGicSgiIntId

diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf b/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf

index b5d4e38..fdbdc82 100644

--- a/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf

+++ b/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf

@@ -69,3 +69,5 @@

   gArmPlatformTokenSpaceGuid.PcdCPUCoresStackBase

   gArmPlatformTokenSpaceGuid.PcdCPUCorePrimaryStackSize

   gArmPlatformTokenSpaceGuid.PcdCPUCoreSecondaryStackSize

+

+  gArmPlatformTokenSpaceGuid.PcdEarlyHelloMessage

-- 

1.8.3.1