On 02/05 00:03, Alexandre Belloni wrote: > For some architectures it is necessary to reserve space on disk without > it being present in the partition table. > > For example, u-boot on i.mx is placed at an offset of 1kB on the sdcard. > While it would be possible to create a partition at that offset and > place u-boot there, it would then be necessary to update the default > u-boot environment to use partition 2 on the mmc instead of partition > 1.
I'm wondering if reusing parition here is the right choice. How about making this a separate command, since the operation of putting some binary data at a particular location within the image sounds like something very specific to wic. Could name it 'raw-copy', with options --source and --offset. The command would be applied after image assembly is complete. Offset could be expressed in bytes by default (plus k/M/G suffix). Source could either be a 'bootloader', that implies a default bootloader for this target, or a name of a file from $DEPLOY_DIR_IMAGE. Assuming IMAGE_BOOTLOADER='u-boot.img' is set somewhere, the kickstart could look like: part / --source rootfs --ondisk mmcblk --fstype=ext4 --label root --align 4 --start 1M raw-copy --source bootloader --offset 1kB If at some point we extend the bootloader command to include the name of bootloader file: part / --source rootfs --ondisk mmcblk --fstype=ext4 --label root --align 4 --start 1M bootloader --name u-boot.img raw-copy --source bootloader --offset 1kB What do you think? -- Maciej Borzęcki Senior Software Developer at Open-RnD Sp. z o.o., Poland www.open-rnd.pl mobile: +48 889 117 365, fax: +48 42 657 9079 Niniejsza wiadomość wraz z załącznikami może zawierać chronione prawem lub poufne informacje i została wysłana wyłącznie do wiadomości i użytku osób, do których została zaadresowana. Jeśli wiadomość została otrzymana przypadkowo zabrania się jej kopiowania lub rozsyłania do osób trzecich. W takim przypadku uprasza się o natychmiastowe zniszczenie wiadomości oraz poinformowanie nadawcy o zaistniałej sytuacji za pomocą wiadomości zwrotnej. Dziękujemy. This message, including any attachments hereto, may contain privileged or confidential information and is sent solely for the attention and use of the intended addressee(s). If you are not an intended addressee, you may neither use this message nor copy or deliver it to anyone. In such case, you should immediately destroy this message and kindly notify the sender by reply email. Thank you. -- _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-core
