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From 638594083b191f84f5d9333eb6147a31570f5a5a Mon Sep 17 00:00:00 2001
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From: Laszlo Ersek <lersek@redhat.com>
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Date: Wed, 14 Oct 2015 13:59:20 +0200
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Subject: ArmPlatformPkg: PrePeiCore: write early hello message to the serial
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port (RH)
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The FixedPcdGetSize() macro expands to an integer constant, therefore an
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optimizing compiler can eliminate the new code, if the platform DSC
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doesn't override the empty string (size=1) default of
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PcdEarlyHelloMessage.
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RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1270279
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Downstream only:
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<http://thread.gmane.org/gmane.comp.bios.edk2.devel/2996/focus=3433>.
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Notes about the 20160608b-988715a -> 20170228-c325e41585e3 rebase:
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- no changes
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Notes about the 20170228-c325e41585e3 -> 20171011-92d07e48907f rebase:
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- no changes
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Notes about the 20171011-92d07e48907f -> 20180508-ee3198e672e2 rebase:
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- adapt to upstream commit 7e2a8dfe8a9a ("ArmPlatformPkg/PrePeiCore: seed
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temporary stack before entering PEI core", 2017-11-09) -- conflict
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resolution in "ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf"
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Contributed-under: TianoCore Contribution Agreement 1.0
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Signed-off-by: Laszlo Ersek <lersek@redhat.com>
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(cherry picked from commit b16c4c505ce0e27305235533eac9236aa66f132e)
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(cherry picked from commit 742e5bf6d5ce5a1e73879d6e5c0dd00feda7a9ac)
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(cherry picked from commit 93d69eb9393cf05af90676253875c59c1bec67fd)
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---
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ArmPlatformPkg/PrePeiCore/MainMPCore.c | 5 +++++
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ArmPlatformPkg/PrePeiCore/MainUniCore.c | 5 +++++
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ArmPlatformPkg/PrePeiCore/PrePeiCore.h | 1 +
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ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf | 2 ++
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ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf | 2 ++
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5 files changed, 15 insertions(+)
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diff --git a/ArmPlatformPkg/PrePeiCore/MainMPCore.c b/ArmPlatformPkg/PrePeiCore/MainMPCore.c
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index dc47adb..cbd7223 100644
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--- a/ArmPlatformPkg/PrePeiCore/MainMPCore.c
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+++ b/ArmPlatformPkg/PrePeiCore/MainMPCore.c
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@@ -117,6 +117,11 @@ PrimaryMain (
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UINTN TemporaryRamBase;
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UINTN TemporaryRamSize;
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+ if (FixedPcdGetSize (PcdEarlyHelloMessage) > 1) {
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+ SerialPortWrite (FixedPcdGetPtr (PcdEarlyHelloMessage),
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+ FixedPcdGetSize (PcdEarlyHelloMessage) - 1);
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+ }
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+
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CreatePpiList (&PpiListSize, &PpiList);
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// Enable the GIC Distributor
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diff --git a/ArmPlatformPkg/PrePeiCore/MainUniCore.c b/ArmPlatformPkg/PrePeiCore/MainUniCore.c
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index 134a469..af39fc0 100644
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--- a/ArmPlatformPkg/PrePeiCore/MainUniCore.c
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+++ b/ArmPlatformPkg/PrePeiCore/MainUniCore.c
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@@ -35,6 +35,11 @@ PrimaryMain (
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UINTN TemporaryRamBase;
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UINTN TemporaryRamSize;
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+ if (FixedPcdGetSize (PcdEarlyHelloMessage) > 1) {
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+ SerialPortWrite (FixedPcdGetPtr (PcdEarlyHelloMessage),
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+ FixedPcdGetSize (PcdEarlyHelloMessage) - 1);
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+ }
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+
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CreatePpiList (&PpiListSize, &PpiList);
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// Adjust the Temporary Ram as the new Ppi List (Common + Platform Ppi Lists) is created at
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diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCore.h b/ArmPlatformPkg/PrePeiCore/PrePeiCore.h
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index 1608946..bf843d7 100644
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--- a/ArmPlatformPkg/PrePeiCore/PrePeiCore.h
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+++ b/ArmPlatformPkg/PrePeiCore/PrePeiCore.h
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@@ -21,6 +21,7 @@
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#include <Library/DebugLib.h>
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#include <Library/IoLib.h>
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#include <Library/PcdLib.h>
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+#include <Library/SerialPortLib.h>
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#include <PiPei.h>
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#include <Ppi/TemporaryRamSupport.h>
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diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf b/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf
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index e3a31fa..1bc0c45 100644
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--- a/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf
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+++ b/ArmPlatformPkg/PrePeiCore/PrePeiCoreMPCore.inf
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@@ -72,6 +72,8 @@
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gArmPlatformTokenSpaceGuid.PcdCPUCorePrimaryStackSize
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gArmPlatformTokenSpaceGuid.PcdCPUCoreSecondaryStackSize
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+ gArmPlatformTokenSpaceGuid.PcdEarlyHelloMessage
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+
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gArmTokenSpaceGuid.PcdGicDistributorBase
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gArmTokenSpaceGuid.PcdGicInterruptInterfaceBase
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gArmTokenSpaceGuid.PcdGicSgiIntId
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diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf b/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf
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index ec83cec..b100820 100644
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--- a/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf
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+++ b/ArmPlatformPkg/PrePeiCore/PrePeiCoreUniCore.inf
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@@ -70,4 +70,6 @@
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gArmPlatformTokenSpaceGuid.PcdCPUCorePrimaryStackSize
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gArmPlatformTokenSpaceGuid.PcdCPUCoreSecondaryStackSize
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+ gArmPlatformTokenSpaceGuid.PcdEarlyHelloMessage
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+
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gEfiMdeModulePkgTokenSpaceGuid.PcdInitValueInTempStack
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--
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1.8.3.1
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