roms/edk2: Only initialize required submodules

The EDK2 firmware images built to test QEMU do not require
the following submodules:

 - MdeModulePkg/Universal/RegularExpressionDxe/oniguruma
 - UnitTestFrameworkPkg/Library/CmockaLib/cmocka

The only submodules required are:

 - ArmPkg/Library/ArmSoftFloatLib/berkeley-softfloat-3
 - BaseTools/Source/C/BrotliCompress/brotli
 - CryptoPkg/Library/OpensslLib/openssl
 - MdeModulePkg/Library/BrotliCustomDecompressLib/brotli

Adapt the buildsys machinery to only initialize the required
submodules.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20211018105816.2663195-3-philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

.gitlab-ci.d/edk2.yml

@@ -50,7 +50,11 @@ build-edk2:
    GIT_DEPTH: 3
  script: # Clone the required submodules and build EDK2
  - git submodule update --init roms/edk2
- - git -C roms/edk2 submodule update --init
+ - git -C roms/edk2 submodule update --init --
+     ArmPkg/Library/ArmSoftFloatLib/berkeley-softfloat-3
+     BaseTools/Source/C/BrotliCompress/brotli
+     CryptoPkg/Library/OpensslLib/openssl
+     MdeModulePkg/Library/BrotliCustomDecompressLib/brotli
  - export JOBS=$(($(getconf _NPROCESSORS_ONLN) + 1))
  - echo "=== Using ${JOBS} simultaneous jobs ==="
  - make -j${JOBS} -C roms efi 2>&1 1>edk2-stdout.log | tee -a edk2-stderr.log >&2

roms/Makefile.edk2

@@ -51,7 +51,12 @@ all: $(foreach flashdev,$(flashdevs),../pc-bios/edk2-$(flashdev).fd.bz2) \
 # make-release/tarball scripts.
 submodules:
 	if test -d edk2/.git; then \
-		cd edk2 && git submodule update --init --force; \
+		cd edk2 && git submodule update --init --force -- \
+			ArmPkg/Library/ArmSoftFloatLib/berkeley-softfloat-3 \
+			BaseTools/Source/C/BrotliCompress/brotli \
+			CryptoPkg/Library/OpensslLib/openssl \
+			MdeModulePkg/Library/BrotliCustomDecompressLib/brotli \
+		; \
 	fi
 
 # See notes on the ".NOTPARALLEL" target and the "+" indicator in

scripts/make-release

@@ -27,7 +27,12 @@ git submodule update --init
 # don't necessarily have much control over how a submodule handles its
 # submodule dependencies, so we continue to handle these on a case-by-case
 # basis for now.
-(cd roms/edk2 && git submodule update --init)
+(cd roms/edk2 && \
+    git submodule update --init -- \
+        ArmPkg/Library/ArmSoftFloatLib/berkeley-softfloat-3 \
+        BaseTools/Source/C/BrotliCompress/brotli \
+        CryptoPkg/Library/OpensslLib/openssl \
+        MdeModulePkg/Library/BrotliCustomDecompressLib/brotli)
 popd
 tar --exclude=.git -cjf ${destination}.tar.bz2 ${destination}
 rm -rf ${destination}