Blame SOURCES/0016-ArmPlatformPkg-introduce-fixed-PCD-for-early-hello-m.patch

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From 03a7ff7a8ab80c740dc1ab64b74bb691cadbf84e 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 13:49:43 +0200
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Subject: ArmPlatformPkg: introduce fixed PCD for early hello message (RH only)
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Notes about the RHEL-8.3/20200603-ca407c7246bf [edk2-stable202005] ->
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RHEL-8.5/20210520-e1999b264f1f [edk2-stable202105] rebase:
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- no change
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Notes about the RHEL-8.2/20190904-37eef91017ad [edk2-stable201908] ->
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RHEL-8.3/20200603-ca407c7246bf [edk2-stable202005] rebase:
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- no change
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Notes about the RHEL-8.1/20190308-89910a39dcfd [edk2-stable201903] ->
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RHEL-8.2/20190904-37eef91017ad [edk2-stable201908] rebase:
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- no change
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Notes about the RHEL-8.0/20180508-ee3198e672e2 ->
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RHEL-8.1/20190308-89910a39dcfd rebase:
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- no change
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Notes about the RHEL-7.6/ovmf-20180508-2.gitee3198e672e2.el7 ->
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RHEL-8.0/20180508-ee3198e672e2 rebase:
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- reorder the rebase changelog in the commit message so that it reads like
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  a blog: place more recent entries near the top
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- no changes to the patch body
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Notes about the 20171011-92d07e48907f -> 20180508-ee3198e672e2 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 20160608b-988715a -> 20170228-c325e41585e3 rebase:
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- no changes
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Drew has proposed that ARM|AARCH64 platform firmware (especially virtual
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machine firmware) print a reasonably early, simple hello message to the
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serial port, regardless of debug mask settings. This should inform
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interactive users, and provide some rough help in localizing boot
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problems, even with restrictive debug masks.
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If a platform doesn't want this feature, it should stick with the default
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empty string.
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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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Suggested-by: Drew Jones <drjones@redhat.com>
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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 7ce97b06421434c82095f01a1753a8c9c546cc30)
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(cherry picked from commit 20b1f1cbd0590aa71c6d99d35e23cf08e0707750)
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(cherry picked from commit 6734b88cf7abcaf42632e3d2fc469b2169dd2f16)
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(cherry picked from commit ef77da632559e9baa1c69869e4cbea377068ef27)
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(cherry picked from commit 58755c51d3252312d80cbcb97928d71199c2f5e1)
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(cherry picked from commit c3f07e323e76856f1b42ea7b8c598ba3201c28a2)
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(cherry picked from commit 9f756c1ad83cc81f7d892cd036d59a2b567b02dc)
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(cherry picked from commit c75aea7a738ac7fb944c0695a4bfffc3985afaa9)
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---
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 ArmPlatformPkg/ArmPlatformPkg.dec | 7 +++++++
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 1 file changed, 7 insertions(+)
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diff --git a/ArmPlatformPkg/ArmPlatformPkg.dec b/ArmPlatformPkg/ArmPlatformPkg.dec
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index 3a25ddcdc8..b2b58553c7 100644
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--- a/ArmPlatformPkg/ArmPlatformPkg.dec
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+++ b/ArmPlatformPkg/ArmPlatformPkg.dec
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@@ -121,6 +121,13 @@
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   ## If set, this will swap settings for HDLCD RED_SELECT and BLUE_SELECT registers
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   gArmPlatformTokenSpaceGuid.PcdArmHdLcdSwapBlueRedSelect|FALSE|BOOLEAN|0x00000045
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+  #
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+  # Early hello message (ASCII string), printed to the serial port.
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+  # If set to the empty string, nothing is printed.
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+  # Otherwise, a trailing CRLF should be specified explicitly.
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+  #
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+  gArmPlatformTokenSpaceGuid.PcdEarlyHelloMessage|""|VOID*|0x00000100
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+
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 [PcdsFixedAtBuild.common,PcdsDynamic.common]
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   ## PL031 RealTimeClock
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   gArmPlatformTokenSpaceGuid.PcdPL031RtcBase|0x0|UINT32|0x00000024
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-- 
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2.27.0
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