[PATCH v2 05/15] arm: Discard unwanted sections in linker script

[Ilias Apalodimas]

On Sun, 16 Mar 2025 at 00:18, Sam Edwards <cfsworks at gmail.com> wrote:
>
> There are a handful of sections that are not useful in the U-Boot output
> binary. At present, the linker script moves these to the end of the
> binary, after the _image_binary_end marker symbol, so that they don't
> get loaded.
>
> The linker script syntax supports discarding sections that shouldn't be
> included in the output. Switch to this instead, to make the intention
> clearer and reduce the ELF sections that have to be handled later in the
> build. This is also consistent with the other architectures' linker
> scripts.
>
> Signed-off-by: Sam Edwards <CFSworks at gmail.com>

Reviewed-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>

> ---
>  arch/arm/cpu/u-boot.lds | 20 ++++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/arch/arm/cpu/u-boot.lds b/arch/arm/cpu/u-boot.lds
> index 63e82a09fad..817e7a983ae 100644
> --- a/arch/arm/cpu/u-boot.lds
> +++ b/arch/arm/cpu/u-boot.lds
> @@ -181,14 +181,14 @@ SECTIONS
>                 __bss_end = .;
>         }
>
> -       .dynsym _image_binary_end : { *(.dynsym) }
> -       .dynbss : { *(.dynbss) }
> -       .dynstr : { *(.dynstr*) }
> -       .dynamic : { *(.dynamic*) }
> -       .plt : { *(.plt*) }
> -       .interp : { *(.interp*) }
> -       .gnu.hash : { *(.gnu.hash) }
> -       .gnu : { *(.gnu*) }
> -       .ARM.exidx : { *(.ARM.exidx*) }
> -       .gnu.linkonce.armexidx : { *(.gnu.linkonce.armexidx.*) }
> +       /DISCARD/ : { *(.dynsym) }
> +       /DISCARD/ : { *(.dynbss) }
> +       /DISCARD/ : { *(.dynstr*) }
> +       /DISCARD/ : { *(.dynamic*) }
> +       /DISCARD/ : { *(.plt*) }
> +       /DISCARD/ : { *(.interp*) }
> +       /DISCARD/ : { *(.gnu.hash) }
> +       /DISCARD/ : { *(.gnu*) }
> +       /DISCARD/ : { *(.ARM.exidx*) }
> +       /DISCARD/ : { *(.gnu.linkonce.armexidx.*) }
>  }
> --
> 2.48.1
>