mem_test: update edk2 and compiler version for build

- update edk2 version for the mem_test build to edk2-stable202511
  so it doesn't require cxl_revert.patch workaround.
- update README and mem_test_edk2.patch.

Signed-off-by: Amrathesh <amrathesh@arm.com>
Change-Id: I904aede9579a8b0e37818997d7b056e3ca744383

Author: amrathesh

docs/mem_test/README.md

@@ -18,19 +18,18 @@ might lead to unpredictable behavior in concurrent programs.
 1. Setup edk2 build directory
 >          git clone https://github.com/tianocore/edk2.git
 >          cd edk2
->          git checkout 836942fbadb629050b866a8052e6af755bcdf623
+>          git checkout edk2-stable202511
 >          git clone https://github.com/tianocore/edk2-libc.git
 >          git submodule update --init --recursive
 
-2. Download source files and apply edk2 patch
+2. Download source files
 >          git clone https://github.com/ARM-software/sysarch-acs.git ShellPkg/Application/sysarch-acs
 >          git clone https://github.com/relokin/kvm-unit-tests.git ShellPkg/Application/sysarch-acs/mem_test/kvm-unit-tests
 >          git -C ShellPkg/Application/sysarch-acs/mem_test/kvm-unit-tests checkout target-efi-bsa
->          git apply ShellPkg/Application/sysarch-acs/mem_test/patches/mem_test_edk2.patch
 
 3. Build bsa-acs UEFI app <br>
-Note :  Install GCC-ARM 13.2 [toolchain](https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads)
->          export GCCNOLTO_AARCH64_PREFIX=<path to CC>arm-gnu-toolchain-13.2.Rel1-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-
+Note :  Install GCC-ARM 14.3 [toolchain](https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads)
+>          export GCCNOLTO_AARCH64_PREFIX=<path to CC>arm-gnu-toolchain-14.3.Rel1-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-
 >          export PACKAGES_PATH=`pwd`/edk2-libc
 >          source edksetup.sh
 >          make -C BaseTools/Source/C

mem_test/patches/cxl_revert.patch

@@ -1,17 +1,17 @@
 diff --git a/BaseTools/Scripts/GccBase.lds b/BaseTools/Scripts/GccBase.lds
-index 9f27e83bb0..79e8c9f023 100644
+index 3d2a97ddeb..c9e35af0c1 100644
 --- a/BaseTools/Scripts/GccBase.lds
 +++ b/BaseTools/Scripts/GccBase.lds
-@@ -21,6 +21,7 @@ SECTIONS {
+@@ -27,6 +27,7 @@ SECTIONS {
    . = PECOFF_HEADER_SIZE;
 
    .text : ALIGN(CONSTANT(COMMONPAGESIZE)) {
 +    _textbsa = .;
+     KEEP(*(.entry))
      *(.text .text.* .stub .gnu.linkonce.t.*)
      *(.rodata .rodata.* .gnu.linkonce.r.*)
-     *(.got .got.*)
 diff --git a/ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.c b/ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.c
-index 17e48443ac..a2b3adefdf 100644
+index 17e48443ac..ddf56f0cd6 100644
 --- a/ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.c
 +++ b/ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.c
 @@ -16,6 +16,9 @@
@@ -30,29 +30,29 @@ index 17e48443ac..a2b3adefdf 100644
 
 +  mySystemTable = SystemTable;
 +  myImageHandle = ImageHandle;
-+
++ 
    Status = SystemTable->BootServices->OpenProtocol (
                                          ImageHandle,
                                          &gEfiShellParametersProtocolGuid,
 diff --git a/ShellPkg/ShellPkg.dsc b/ShellPkg/ShellPkg.dsc
-index 5303a68959..7ccbce272b 100644
+index 94d95de0eb..4a70e2857a 100644
 --- a/ShellPkg/ShellPkg.dsc
 +++ b/ShellPkg/ShellPkg.dsc
-@@ -27,6 +27,9 @@
-   UefiDriverEntryPoint|MdePkg/Library/UefiDriverEntryPoint/UefiDriverEntryPoint.inf
-   UefiBootServicesTableLib|MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib.inf
-   DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLibOptionalDevicePathProtocol.inf
+@@ -23,6 +23,9 @@
+ !include MdePkg/MdeLibs.dsc.inc
+ 
+ [LibraryClasses.common]
 +  ValLib|ShellPkg/Application/sysarch-acs/val/ValLib.inf
 +  PalLib|ShellPkg/Application/sysarch-acs/pal/uefi_acpi/PalLib.inf
 +  LibCFlat|ShellPkg/Application/sysarch-acs/mem_test/LibCFlat.inf
- !if $(TARGET) == RELEASE
-   DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
- !else
-@@ -97,6 +100,7 @@
-   ShellPkg/Library/UefiShellDebug1CommandsLib/UefiShellDebug1CommandsLib.inf
-   ShellPkg/Library/UefiShellNetwork1CommandsLib/UefiShellNetwork1CommandsLib.inf
-   ShellPkg/Library/UefiShellNetwork2CommandsLib/UefiShellNetwork2CommandsLib.inf
+   UefiApplicationEntryPoint|MdePkg/Library/UefiApplicationEntryPoint/UefiApplicationEntryPoint.inf
+   UefiDriverEntryPoint|MdePkg/Library/UefiDriverEntryPoint/UefiDriverEntryPoint.inf
+   UefiBootServicesTableLib|MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib.inf
+@@ -79,6 +82,7 @@
+   # Build all the libraries when building this package.
+   # This helps developers test changes and how they affect the package.
+   #
 +  ShellPkg/Application/sysarch-acs/apps/uefi/Mem.inf
- 
-   ShellPkg/Application/Shell/Shell.inf {
-     <PcdsFixedAtBuild>
+   ShellPkg/Library/UefiShellLib/UefiShellLib.inf
+   ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.inf
+   ShellPkg/Library/UefiShellCommandLib/UefiShellCommandLib.inf

mem_test/patches/mem_test_edk2.patch

@@ -157,14 +157,10 @@ fi
 
 if [ "$1" == "mem_test" ]; then
     git checkout ShellPkg/ShellPkg.dsc
+    git checkout BaseTools/Scripts/GccBase.lds
+    git checkout ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.c
     git apply ShellPkg/Application/sysarch-acs/mem_test/patches/mem_test_edk2.patch
-    cd ShellPkg/Application/sysarch-acs
-    git apply mem_test/patches/cxl_revert.patch
-    cd ../../../
     build -a AARCH64 -t GCCNOLTO -n 1 -p ShellPkg/ShellPkg.dsc -m ShellPkg/Application/sysarch-acs/apps/uefi/Mem.inf
-    cd ShellPkg/Application/sysarch-acs
-    git checkout pal/ val/
-    cd ../../../
     return 0;
 fi