--- /dev/null
+include $(INCLUDE_DIR)/prereq.mk
+
+PKG_NAME ?= optee-os
+
+ifndef PKG_SOURCE_PROTO
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL_FILE:=$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL = https://github.com/OP-TEE/optee_os/archive/refs/tags/
+TAR_OPTIONS+= --transform 's/optee_os/$(PKG_NAME)/'
+endif
+
+PKG_BUILD_DIR = $(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_NAME)-$(PKG_VERSION)
+
+PKG_TARGETS := bin
+PKG_FLAGS:=nonshared
+
+PKG_LICENSE:=BSD 2-Clause
+PKG_LICENSE_FILES:=LICENSE
+
+PKG_BUILD_PARALLEL ?= 1
+
+$(eval $(call TestHostCommand,python3-cryptography, \
+ Please install the Python3 cryptography module, \
+ $(STAGING_DIR_HOST)/bin/python3 -c 'import cryptography'))
+
+$(eval $(call TestHostCommand,python3-pyelftools, \
+ Please install the Python3 pyelftools module, \
+ $(STAGING_DIR_HOST)/bin/python3 -c 'import elftools'))
+
+export GCC_HONOUR_COPTS=s
+
+define Package/optee-os/install/default
+ $(CP) $(patsubst %,$(PKG_BUILD_DIR)/out/arm-plat-$(PLAT)/core/%,$(OPTEE_IMAGE)) $(1)/
+endef
+
+Package/optee-os/install = $(Package/optee-os/install/default)
+
+define Optee-os/Init
+ BUILD_TARGET:=
+ BUILD_SUBTARGET:=
+ BUILD_DEVICES:=
+ NAME:=
+ DEPENDS:=
+ HIDDEN:=
+ DEFAULT:=
+ VARIANT:=$(1)
+ PLAT:=$(1)
+ PLAT_FLAVOR:=
+ OPTEE_IMAGE:=tee-header_v2.bin tee-pager_v2.bin tee-pageable_v2.bin
+endef
+
+TARGET_DEP = TARGET_$(BUILD_TARGET)$(if $(BUILD_SUBTARGET),_$(BUILD_SUBTARGET))
+
+define Build/Optee-os/Target
+ $(eval $(call Optee-os/Init,$(1)))
+ $(eval $(call Optee-os/Default,$(1)))
+ $(eval $(call Optee-os/$(1),$(1)))
+
+ define Package/optee-os-$(1)
+ SECTION:=boot
+ CATEGORY:=Boot Loaders
+ TITLE:=OPTEE-OS for $(NAME)
+ VARIANT:=$(VARIANT)
+ DEPENDS:=@!IN_SDK $(DEPENDS)
+ HIDDEN:=$(HIDDEN)
+ ifneq ($(BUILD_TARGET),)
+ DEPENDS += @$(TARGET_DEP)
+ ifneq ($(BUILD_DEVICES),)
+ DEFAULT := y if ($(TARGET_DEP)_Default \
+ $(patsubst %,|| $(TARGET_DEP)_DEVICE_%,$(BUILD_DEVICES)) \
+ $(patsubst %,|| $(patsubst TARGET_%,TARGET_DEVICE_%,$(TARGET_DEP))_DEVICE_%,$(BUILD_DEVICES)))
+ endif
+ endif
+ $(if $(DEFAULT),DEFAULT:=$(DEFAULT))
+ URL:=https://optee.readthedocs.io
+ endef
+
+ define Package/optee-os-$(1)/install
+ $$(Package/optee-os/install)
+ endef
+endef
+
+define Build/Configure/Optee-os
+endef
+
+define Build/Compile/Optee-os
+ +$(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR) \
+ PATH=$(LINUX_DIR)/scripts/dtc/:$(PATH) \
+ CROSS_COMPILE=$(TARGET_CROSS) \
+ CROSS_COMPILE_core="$(TARGET_CROSS)" \
+ CROSS_COMPILE_ta_arm64="$(TARGET_CROSS)" \
+ CROSS_COMPILE_ta_arm32="$(TARGET_CROSS)" \
+ $(if $(CONFIG_ARCH_64BIT), CFG_ARM64_core=y CFG_USER_TA_TARGETS=ta_arm64, CFG_ARM32_core=y) \
+ PLATFORM="$(PLAT)" \
+ PLATFORM_FLAVOR="$(call qstrip,$(PLAT_FLAVOR))" \
+ $(OPTEE_MAKE_FLAGS)
+endef
+
+define BuildPackage/Optee-os/Defaults
+ Build/Configure/Default = $$$$(Build/Configure/Optee-os)
+ Build/Compile/Default = $$$$(Build/Compile/Optee-os)
+endef
+
+define BuildPackage/Optee-os
+ $(eval $(call BuildPackage/Optee-os/Defaults))
+ $(foreach type,$(if $(DUMP),$(OPTEE_TARGETS),$(BUILD_VARIANT)), \
+ $(eval $(call Build/Optee-os/Target,$(type)))
+ )
+ $(eval $(call Build/DefaultTargets))
+ $(foreach type,$(if $(DUMP),$(OPTEE_TARGETS),$(BUILD_VARIANT)), \
+ $(call BuildPackage,optee-os-$(type))
+ )
+endef