From: Liming Gao <liming.gao@intel.com>
Date: Thu, 2 Nov 2017 02:59:13 +0000 (+0800)
Subject: MdeModulePkg: Add new PCD PcdInitValueInTempStack
X-Git-Tag: edk2-stable201903~3145
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=eb3abca30855c5ec0698585e2c1f64f7853fc36e;ds=sidebyside

MdeModulePkg: Add new PCD PcdInitValueInTempStack

https://bugzilla.tianocore.org/show_bug.cgi?id=740

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---

diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index 20a07be96e..6f46d595de 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -883,6 +883,12 @@
   # @Prompt Enable NULL address detection.
   gEfiMdeModulePkgTokenSpaceGuid.PcdNullPointerDetectionPropertyMask|0x0|UINT8|0x30001050
 
+  ## Init Value in Temp Stack to be shared between SEC and PEI_CORE
+  # SEC fills the full temp stack with this values. When switch stack, PeiCore can check
+  # this value in the temp stack to know how many stack has been used.
+  # @Prompt Init Value in Temp Stack
+  gEfiMdeModulePkgTokenSpaceGuid.PcdInitValueInTempStack|0x5AA55AA5|UINT32|0x30001051
+
 [PcdsFixedAtBuild, PcdsPatchableInModule]
   ## Dynamic type PCD can be registered callback function for Pcd setting action.
   #  PcdMaxPeiPcdCallBackNumberPerPcdEntry indicates the maximum number of callback function
diff --git a/MdeModulePkg/MdeModulePkg.uni b/MdeModulePkg/MdeModulePkg.uni
index f8b31694ba..ce9de4897a 100644
--- a/MdeModulePkg/MdeModulePkg.uni
+++ b/MdeModulePkg/MdeModulePkg.uni
@@ -1140,3 +1140,9 @@
                                                                                                        " exception caused by legacy memory (0-4095) access after EndOfDxe,"
                                                                                                        " such as Windows 7 boot on Qemu.\n"
 
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdInitValueInTempStack_PROMPT  #language en-US "Init Value in Temp Stack"
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdInitValueInTempStack_HELP    #language en-US "Init Value in Temp Stack to be shared between SEC and PEI_CORE\n"
+                                                                                           "SEC fills the full temp stack with this values. When switch stack, PeiCore can check\n"
+                                                                                           "this value in the temp stack to know how many stack has been used.\n"
+