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559a7d1177
rootfs part needs to be aligned to erase block size which is passed as the 6th argument to Image/Build/Seama and is now 65536 since commit commit 5119ee9 "ar71xx: fix bogus hardcoded kernel image size for Seama images (fixes #20585)", but $(($(6) - 64)) still assumes that the argument is a limit on kernel partition size, i.e. 1310720, so the generated factory image is wrong in that the kernel will fail to find the rootfs (FlySpray link at [1]) This patch will workaround it with the following steps 1. Calculate the required space for seama header and META data in step 5 2. Pre-padding 64 bytes to lzma-compressed loader 3. Generate correctly padded image-$(2).tmp 4. Strip out the padding 5. Seal it with seama utility While at it convert seama to new build method [1] FS#35 - mynet-n750 factory images don't find root partition, https://bugs.lede-project.org/index.php?do=details&task_id=35 Reported-by: Steven Haigh <netwiz@crc.id.au> Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>