From e6c0f362edd5834b0d891fc44cd6873566bb0df4 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Wed, 14 Oct 2015 13:59:20 +0200
Subject: [PATCH] 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)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
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 dc47adbaff..cbd72232c7 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 134a469427..af39fc017c 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 160894620c..bf843d7768 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 e3a31fa7c6..1bc0c45420 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 ec83cec2d8..20698fcfac 100644
--- a/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf
+++ b/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf
@@ -71,3 +71,5 @@
gArmPlatformTokenSpaceGuid.PcdCPUCoreSecondaryStackSize
gEfiMdeModulePkgTokenSpaceGuid.PcdInitValueInTempStack
+
+ gArmPlatformTokenSpaceGuid.PcdEarlyHelloMessage