build: rootfs will be built at every bootimages and run_qemu

This will cause the updated rootfs folder eg. work/evalsoc/buildroot_initramfs_sysroot
content changes will be generated into work/evalsoc/boot/uInitrd.lz4
and S03net file copy also changed to initrd generation process

Signed-off-by: Huaqi Fang <[email protected]>

Makefile

@@ -280,8 +280,8 @@ $(vmlinux): linux
 $(linux_image): linux
 	@echo "Linux image is generated $@"
 
-initrd: $(initramfs)
-	@echo "initramfs cpio file is generated into $<"
+$(initramfs): initrd
+	@echo "initramfs cpio file is generated into $@"
 
 linux: $(linux_wrkdir)/.config
 	$(MAKE) -C $(linux_srcdir) O=$(linux_wrkdir) \
@@ -292,11 +292,13 @@ linux: $(linux_wrkdir)/.config
 		PATH=$(RVPATH) \
 		vmlinux Image
 
-$(initramfs): $(buildroot_initramfs_sysroot) $(linux_image)
+initrd: $(buildroot_initramfs_sysroot) $(linux_image)
 	$(INITRAMFS_PRECMD)
+	# Copy files required for xec network startup
+	[ -f $(confdir)/S03net ] && cp -af $(confdir)/S03net $(buildroot_initramfs_sysroot)/etc/init.d/ || true
 	cd $(linux_wrkdir) && \
 		$(linux_gen_initramfs) \
-		-o $@ -u $(shell id -u) -g $(shell id -g) \
+		-o $(initramfs) -u $(shell id -u) -g $(shell id -g) \
 		$(confdir)/initramfs.txt \
 		$(buildroot_initramfs_sysroot)