Hi, this partially a continuation of the "Some standard partition name for extra user data?" thread.
Summary: 1) I have device with serial flash (16 MiB) and NAND flash (128 MiB). 2) Serial flash contains 2 partitions: "bootloader" and "firmware". 3) Bootloader writes supplied image to the "firmware" partition. 4) I want to use NAND flash for UBI with "rootfs_data" volume. Of course standard OpenWrt image contains: kernel + rootfs (SquashFS) + JFFS2 mark To support my device I would need to: 1) Stop "squashfs-split" (mtdsplit_squashfs.c) from creating "rootfs_data" right after "rootfs". I could modify mtdsplit_squashfs.c to understand some new mark like a "DONT_SPLIT" (similar to the 0xdeadc0de mark for JFFS2). 2) Add some preinit script that will prepare UBI on NAND (as bootloader won't help me). The tricky part is cleaning UBI's "rootfs_data" volume after every firmware flash. I would need some trick to detect if "rootfs_data" was already erased once or not. Maybe I could use some marks again? Something like a) "DONT_SPLIT FIRSTBOOT" b) "DONT_SPLIT UBIREADY" ? What do you think about this? -- Rafał _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
