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authorJo-Philipp Wich <jow@openwrt.org>2015-03-24 10:08:12 +0000
committerJo-Philipp Wich <jow@openwrt.org>2015-03-24 10:08:12 +0000
commit02e2548b844f987edab5fa82fb6283419f3381ff (patch)
treeb727f3d9cdcdc50318b9afbdb3699cbb05f4a466 /target/linux/x86/image
parent5d9eeab64aadb376a8c07d8faad44b25ac9ce7f5 (diff)
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x86: use PARTUUID instead explicitly specifying the device by default
This changes the x86 image generation to match x86_64, using the PARTUUID for the rootfs instead of explicitly configuring the device. It unbreaks KVM with VirtIO, which uses /dev/vda2 instead of /dev/sda2. Tested in QEMU/KVM with VirtIO, VirtualBox and VMware. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> SVN-Revision: 44966
Diffstat (limited to 'target/linux/x86/image')
-rw-r--r--target/linux/x86/image/Makefile4
-rwxr-xr-xtarget/linux/x86/image/gen_image_generic.sh2
2 files changed, 4 insertions, 2 deletions
diff --git a/target/linux/x86/image/Makefile b/target/linux/x86/image/Makefile
index 9e40803aa7..85460206c0 100644
--- 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) \
diff --git a/target/linux/x86/image/gen_image_generic.sh b/target/linux/x86/image/gen_image_generic.sh
index 9d11efbb05..3fb31f6e40 100755
--- a/target/linux/x86/image/gen_image_generic.sh
+++ b/target/linux/x86/image/gen_image_generic.sh
@@ -20,7 +20,7 @@ sect=63
cyl=$(( ($KERNELSIZE + $ROOTFSSIZE) * 1024 * 1024 / ($head * $sect * 512)))
# create partition table
-set `ptgen -o "$OUTPUT" -h $head -s $sect -p ${KERNELSIZE}m -p ${ROOTFSSIZE}m ${ALIGN:+-l $ALIGN}`
+set `ptgen -o "$OUTPUT" -h $head -s $sect -p ${KERNELSIZE}m -p ${ROOTFSSIZE}m ${ALIGN:+-l $ALIGN} ${SIGNATURE:+-S 0x$SIGNATURE}`
KERNELOFFSET="$(($1 / 512))"
KERNELSIZE="$(($2 / 512))"