tree f6c9270f802e98d88dbcc3710dd850740f2797a2
parent 7a0af363a7507490ac42c54d209ee7fc1c4fc6d8
author Sam Edwards <cfsworks@gmail.com> 1742077087 -0700
committer Tom Rini <trini@konsulko.com> 1743626030 -0600

makefile: Add `norelro` linker option

RELRO is an instruction to a dynamic loader to make a memory range
read-only after relocations are applied, for added security. Some
linkers (e.g. LLD) require that all sections covered by the RELRO are
contiguous, so that only a single RELRO is needed. U-Boot at present
neither satisfies this requirement (e.g. x86_64 linker script currently
puts .dynamic too far from .got) nor preserves the RELRO when converting
away from ELF, therefore add `-z norelro` to global linker options.

This can be brought back in the future when the linker scripts are
cleaned up and U-Boot understands RELROs.

Signed-off-by: Sam Edwards <CFSworks@gmail.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>