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# This class generates UEFI capsules
# The current class supports generating a capsule with single firmware binary
DEPENDS += "gettext-native"
inherit python3native
IMAGE_TYPES += "uefi_capsule"
# edk2 base tools should be installed in the native sysroot directory
do_image_uefi_capsule[depends] += "edk2-basetools-native:do_populate_sysroot"
# By default the wic image is used to create a capsule
CAPSULE_IMGTYPE ?= "wic"
# IMGDEPLOYDIR is used as the default location of firmware binary for which the capsule needs to be created
CAPSULE_IMGLOCATION ?= "${IMGDEPLOYDIR}"
# The generated capsule by default has uefi.capsule extension
CAPSULE_EXTENSION ?= "uefi.capsule"
# The following variables must be set to be able to generate a capsule update
UEFI_FIRMWARE_BINARY ?= ""
UEFI_CAPSULE_CONFIG ?= ""
# Check if the required variables are set
python() {
for var in ["UEFI_FIRMWARE_BINARY", "UEFI_CAPSULE_CONFIG"]:
if not d.getVar(var):
raise bb.parse.SkipRecipe(f"{var} not set")
}
IMAGE_CMD:uefi_capsule(){
# Force the GenerateCapsule script to use python3
export PYTHON_COMMAND=${PYTHON}
# Copy the firmware and the capsule config json to current directory
if [ -e ${CAPSULE_IMGLOCATION}/${UEFI_FIRMWARE_BINARY} ]; then
cp ${CAPSULE_IMGLOCATION}/${UEFI_FIRMWARE_BINARY} . ;
fi
export UEFI_FIRMWARE_BINARY=${UEFI_FIRMWARE_BINARY}
envsubst < ${UEFI_CAPSULE_CONFIG} > ./${MACHINE}-capsule-update-image.json
${STAGING_DIR_NATIVE}/usr/bin/edk2-BaseTools/BinWrappers/PosixLike/GenerateCapsule \
-e -o ${IMGDEPLOYDIR}/${UEFI_FIRMWARE_BINARY}.${CAPSULE_EXTENSION} -j \
${MACHINE}-capsule-update-image.json
# Remove the firmware to avoid contamination of IMGDEPLOYDIR
rm ${UEFI_FIRMWARE_BINARY}
}
# The firmware binary should be created before generating the capsule
IMAGE_TYPEDEP:uefi_capsule:append = "${CAPSULE_IMGTYPE}"
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