diff --git a/include/image-commands.mk b/include/image-commands.mk
index cb899a2f30..d2974f4e01 100644
--- a/include/image-commands.mk
+++ b/include/image-commands.mk
@@ -373,7 +373,7 @@ define Build/initrd_compression
 endef
 
 define Build/fit
-	$(TOPDIR)/scripts/mkits.sh \
+	$(call locked,$(TOPDIR)/scripts/mkits.sh \
 		-D $(DEVICE_NAME) -o $@.its -k $@ \
 		-C $(word 1,$(1)) \
 		$(if $(word 2,$(1)),\
@@ -383,14 +383,14 @@ define Build/fit
 		$(if $(findstring with-rootfs,$(word 3,$(1))),-r $(IMAGE_ROOTFS)) \
 		$(if $(findstring with-initrd,$(word 3,$(1))), \
 			$(if $(CONFIG_TARGET_ROOTFS_INITRAMFS_SEPARATE), \
-				-i $(if $(TARGET_PER_DEVICE_ROOTFS),$(LINUX_DIR).$(ROOTFS_ID/$(DEVICE_NAME)),$(KERNEL_BUILD_DIR))/initrd.cpio$(strip $(call Build/initrd_compression)))) \
+				-i $(KERNEL_BUILD_DIR)/initrd$(if $(TARGET_PER_DEVICE_ROOTFS),.$(ROOTFS_ID/$(DEVICE_NAME))).cpio$(strip $(call Build/initrd_compression)))) \
 		-a $(KERNEL_LOADADDR) -e $(if $(KERNEL_ENTRY),$(KERNEL_ENTRY),$(KERNEL_LOADADDR)) \
 		$(if $(DEVICE_FDT_NUM),-n $(DEVICE_FDT_NUM)) \
 		$(if $(DEVICE_DTS_DELIMITER),-l $(DEVICE_DTS_DELIMITER)) \
 		$(if $(DEVICE_DTS_LOADADDR),-s $(DEVICE_DTS_LOADADDR)) \
 		$(if $(DEVICE_DTS_OVERLAY),$(foreach dtso,$(DEVICE_DTS_OVERLAY), -O $(dtso):$(KERNEL_BUILD_DIR)/image-$(dtso).dtbo)) \
 		-c $(if $(DEVICE_DTS_CONFIG),$(DEVICE_DTS_CONFIG),"config-1") \
-		-A $(LINUX_KARCH) -v $(LINUX_VERSION)
+		-A $(LINUX_KARCH) -v $(LINUX_VERSION), gen-cpio$(if $(TARGET_PER_DEVICE_ROOTFS),.$(ROOTFS_ID/$(DEVICE_NAME))))
 	PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage $(if $(findstring external,$(word 3,$(1))),\
 		-E -B 0x1000 $(if $(findstring static,$(word 3,$(1))),-p 0x1000)) -f $@.its $@.new
 	@mv $@.new $@
diff --git a/include/kernel-defaults.mk b/include/kernel-defaults.mk
index 64b8a3775e..f94ed33230 100644
--- a/include/kernel-defaults.mk
+++ b/include/kernel-defaults.mk
@@ -191,25 +191,27 @@ define Kernel/CompileImage/Initramfs
 		$(CP) $(GENERIC_PLATFORM_DIR)/other-files/init $(if $(1),$(1),$(TARGET_DIR))/init; \
 		$(if $(SOURCE_DATE_EPOCH),touch -hcd "@$(SOURCE_DATE_EPOCH)" $(if $(1),$(1),$(TARGET_DIR)) $(if $(1),$(1),$(TARGET_DIR))/init;) \
 		$(if $(CONFIG_TARGET_ROOTFS_INITRAMFS_SEPARATE), \
-			$(if $(call qstrip,$(CONFIG_EXTERNAL_CPIO)), \
-				$(CP) $(CONFIG_EXTERNAL_CPIO) $(KERNEL_BUILD_DIR)/initrd.cpio;,\
-				( cd $(if $(1),$(1),$(TARGET_DIR)); find . | LC_ALL=C sort | $(STAGING_DIR_HOST)/bin/cpio --reproducible -o -H newc -R 0:0 > $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio );) \
-			$(if $(SOURCE_DATE_EPOCH), \
-				touch -hcd "@$(SOURCE_DATE_EPOCH)" $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio;) \
-			$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_BZIP2), \
-				$(STAGING_DIR_HOST)/bin/bzip2 -9 -c < $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio > $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio.bzip2;) \
-			$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_GZIP), \
-				$(STAGING_DIR_HOST)/bin/libdeflate-gzip -n -f -S .gzip -12 $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio;) \
-			$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZ4), \
-				$(STAGING_DIR_HOST)/bin/lz4c -l -c1 -fz --favor-decSpeed $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio;) \
-			$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZMA), \
-				$(STAGING_DIR_HOST)/bin/lzma e -lc1 -lp2 -pb2 $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio.lzma;) \
-			$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZO), \
-				$(STAGING_DIR_HOST)/bin/lzop -9 -f $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio;) \
-			$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_XZ), \
-				$(STAGING_DIR_HOST)/bin/xz -T$(if $(filter 1,$(NPROC)),2,0) -9 -fz --check=crc32 $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio;) \
-			$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_ZSTD), \
-				$(STAGING_DIR_HOST)/bin/zstd -T0 -f -o $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio.zstd $(if $(2),$(LINUX_DIR)$(2),$(KERNEL_BUILD_DIR))/initrd.cpio;) \
+			$(call locked,{ \
+				$(if $(call qstrip,$(CONFIG_EXTERNAL_CPIO)), \
+					$(CP) $(CONFIG_EXTERNAL_CPIO) $(KERNEL_BUILD_DIR)/initrd$(2).cpio;,\
+					( cd $(if $(1),$(1),$(TARGET_DIR)); find . | LC_ALL=C sort | $(STAGING_DIR_HOST)/bin/cpio --reproducible -o -H newc -R 0:0 > $(KERNEL_BUILD_DIR)/initrd$(2).cpio );) \
+				$(if $(SOURCE_DATE_EPOCH), \
+					touch -hcd "@$(SOURCE_DATE_EPOCH)" $(KERNEL_BUILD_DIR)/initrd$(2).cpio;) \
+				$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_BZIP2), \
+					$(STAGING_DIR_HOST)/bin/bzip2 -9 -c < $(KERNEL_BUILD_DIR)/initrd$(2).cpio > $(KERNEL_BUILD_DIR)/initrd$(2).cpio.bzip2;) \
+				$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_GZIP), \
+					$(STAGING_DIR_HOST)/bin/libdeflate-gzip -n -f -S .gzip -12 $(KERNEL_BUILD_DIR)/initrd$(2).cpio;) \
+				$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZ4), \
+					$(STAGING_DIR_HOST)/bin/lz4c -l -c1 -fz --favor-decSpeed $(KERNEL_BUILD_DIR)/initrd$(2).cpio;) \
+				$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZMA), \
+					$(STAGING_DIR_HOST)/bin/lzma e -lc1 -lp2 -pb2 $(KERNEL_BUILD_DIR)/initrd$(2).cpio $(KERNEL_BUILD_DIR)/initrd$(2).cpio.lzma;) \
+				$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZO), \
+					$(STAGING_DIR_HOST)/bin/lzop -9 -f $(KERNEL_BUILD_DIR)/initrd$(2).cpio;) \
+				$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_XZ), \
+					$(STAGING_DIR_HOST)/bin/xz -T$(if $(filter 1,$(NPROC)),2,0) -9 -fz --check=crc32 $(KERNEL_BUILD_DIR)/initrd$(2).cpio;) \
+				$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_ZSTD), \
+					$(STAGING_DIR_HOST)/bin/zstd -T0 -f -o $(KERNEL_BUILD_DIR)/initrd$(2).cpio.zstd $(KERNEL_BUILD_DIR)/initrd$(2).cpio;) \
+			}, gen-cpio$(2)); \
 			$(if $(2),,$(KERNEL_MAKE) $(KERNEL_MAKEOPTS_IMAGE) $(if $(KERNELNAME),$(KERNELNAME),all);),\
 			$(KERNEL_MAKE) $(if $(2),-C $(LINUX_DIR)$(2)) $(KERNEL_MAKEOPTS_IMAGE) $(if $(KERNELNAME),$(KERNELNAME),all);) \
 		$(call Kernel/CopyImage,-initramfs,$(2)); \