edk2: get version + date from git submodule

Turned out hard-coding version and date in the Makefile wasn't a bright
idea.  Updating it on edk2 updates is easily forgotten.  Fetch the info
from git instead.  Store in edk2-version, so this can be committed to
the repo and is present in tarballs too.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-ID: <20240327102448.61877-2-kraxel@redhat.com>

roms/Makefile

@@ -52,6 +52,8 @@ SEABIOS_EXTRAVERSION="-prebuilt.qemu.org"
 #
 EDK2_EFIROM = edk2/BaseTools/Source/C/bin/EfiRom
 
+-include edk2-version
+
 default help:
 	@echo "nothing is build by default"
 	@echo "available build targets:"
@@ -147,10 +149,19 @@ skiboot:
 	$(MAKE) -C skiboot CROSS=$(powerpc64_cross_prefix)
 	cp skiboot/skiboot.lid ../pc-bios/skiboot.lid
 
-efi:
+edk2-version: edk2
+	if test -e edk2/.git; then \
+		echo "EDK2_STABLE = $$(cd edk2; git describe --tags --match 'edk2-stable*')" > $@; \
+		echo "EDK2_DATE = $$(cd edk2; git log -1 --pretty='format:%cd' --date='format:%m/%d/%Y')" >> $@; \
+	else \
+		touch $@; \
+	fi
+
+efi: edk2-version
 	$(PYTHON) edk2-build.py --config edk2-build.config \
-		--version-override "edk2-stable202302-for-qemu" \
-		--release-date "03/01/2023"
+		--version-override "$(EDK2_STABLE)-for-qemu" \
+		--release-date "$(EDK2_DATE)" \
+		--silent --no-logs
 	rm -f ../pc-bios/edk2-*.fd.bz2
 	bzip2 --verbose ../pc-bios/edk2-*.fd