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General informations

The Linux kernel configuration item CONFIG_MIPS_ZBOOT_APPENDED_DTB:

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With this option, the boot code will look for a device tree binary DTB) appended to raw vmlinuz.bin (with decompressor). (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).

This is meant as a backward compatibility convenience for those systems with a bootloader that can't be upgraded to accommodate the documented boot protocol using a device tree.

Beware that there is very little in terms of protection against this option being confused by leftover garbage in memory that might look like a DTB header after a reboot if no actual DTB is appended to vmlinuz.bin. Do not leave this option active in a production kernel if you don't intend to always append a DTB.



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