x86: use PARTUUID instead explicitly specifying the device by default

[openwrt/staging/yousong.git] / target / linux / x86 / image / Makefile

diff --git a/target/linux/x86/image/Makefile b/target/linux/x86/image/Makefile
index 9e40803aa72685682a91130807707c5528aa8ef0..85460206c03326373a3598c5c1aab69f24c5875a 100644 (file)
--- a/target/linux/x86/image/Makefile
+++ b/target/linux/x86/image/Makefile
@@ -40,7 +40,9 @@ ifneq ($(GRUB_TERMINALS),)
   GRUB_TERMINAL_CONFIG := terminal_input $(GRUB_TERMINALS); terminal_output $(GRUB_TERMINALS)
 endif
 
+SIGNATURE:=$(shell dd if=/dev/urandom bs=4 count=1 2>/dev/null | hexdump -v -e '"%08x"')
 ROOTPART:=$(call qstrip,$(CONFIG_TARGET_ROOTFS_PARTNAME))
+ROOTPART:=$(if $(ROOTPART),$(ROOTPART),PARTUUID=$(SIGNATURE)-02)
 
 GRUB_TIMEOUT:=$(call qstrip,$(CONFIG_GRUB_TIMEOUT))
 
@@ -82,7 +84,7 @@ ifneq ($(CONFIG_GRUB_IMAGES),)
                -e 's#@CMDLINE@#$(strip $(call Image/cmdline/$(1)) $(BOOTOPTS) $(GRUB_CONSOLE_CMDLINE))#g' \
                -e 's#@TIMEOUT@#$(GRUB_TIMEOUT)#g' \
                ./grub.cfg > $(KDIR)/root.grub/boot/grub/grub.cfg
-       PADDING="$(CONFIG_TARGET_IMAGES_PAD)" PATH="$(TARGET_PATH)" ./gen_image_generic.sh \
+       PADDING="$(CONFIG_TARGET_IMAGES_PAD)" SIGNATURE="$(SIGNATURE)" PATH="$(TARGET_PATH)" ./gen_image_generic.sh \
                $(BIN_DIR)/$(IMG_PREFIX)-combined-$(1).img \
                $(CONFIG_TARGET_KERNEL_PARTSIZE) $(KDIR)/root.grub \
                $(CONFIG_TARGET_ROOTFS_PARTSIZE) $(KDIR)/root.$(1) \