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87092b3c06
This scripts creates custom kernel header that necessary for Sercomm mt7621 devices: - Sercomm S3 - Beeline SmartBox Giga - Beeline SmartBox Pro - Beeline Smartbox Turbo - Beeline Smartbox Turbo+ - WiFire S1500.NBN Header format ------------- +--------+---------------+------------------------+ | Offset | Value | Description | +========+===============+========================+ | 0x0 | 53 65 72 00 | Magic "Ser." | +--------+---------------+------------------------+ | 0x4 | 04 00 00 01 | End offset of RootFS | +--------+---------------+------------------------+ | | | This header checksum | | 0x8 | d6 14 9a c1 | htonl(~crc) | +--------+---------------+------------------------+ | 0xc | 02 ff ff ff | Constant | +--------+---------------+------------------------+ | 0x10 | 00 01 40 00 | Kernel start offset | +--------+---------------+------------------------+ | 0x14 | c6 94 24 00 | Kernel length | +--------+---------------+------------------------+ | | | Kernel checksum | | 0x18 | e7 78 89 f1 | htonl(~crc) | +--------+---------------+------------------------+ | 0x1c | 00 00 00 00 | Constant | +--------+---------------+------------------------+ | 0x20 | ff ff ff ff | Constant | +--------+---------------+------------------------+ | 0x24 | ff ff ff ff | Constant | +--------+---------------+------------------------+ | 0x28 | 00 00 00 01 | RootFS offset | +--------+---------------+------------------------+ | | | RootFS length | | 0x2c | 04 00 00 00 | Always 0x4, we check | | | | UBI magic only | +--------+---------------+------------------------+ | | | RootFS checksum | | 0x30 | 1c fc 55 2d | htonl(~crc) | | | | Const for UBI magic | +--------+---------------+------------------------+ | 0x34 | 00 00 00 00 | Constant | +--------+---------------+------------------------+ | 0x38 | ff ff ff ff … | Pad to 0x100 | +--------+---------------+------------------------+ Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>