[PATCH 1/1] arm: Add SPL build check to SPL early bss clear

[Brian Moyer]

This felt like a sparsely used feature that I found a bug in and could
easily fix as a first contribution to the project. Through more
testing on my end, it seems that something is not as it appeared at
first glance. Switching branches to build this patch and then back to
my main development branch resulted in the same strange malloc
behavior that I thought I was fixing here, which only resolved after
reverting this patch.

I'd like to understand why SPL_CLEAR_BSS needs to be called in both
SPL and u-boot, if someone better versed in what's going on here can
take the time.

On Sun, Jul 19, 2020 at 4:26 PM Brian Moyer <bdm310 at gmail.com> wrote:
>
> SPL_CLEAR_BSS is called regardless of build type if
> CONFIG_SPL_EARLY_BSS is defined. Add a guard for CONFIG_SPL_BUILD
> to fix.
>
> Signed-off-by: Brian Moyer <bdm310 at gmail.com>
> ---
>
>  arch/arm/lib/crt0.S | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S
> index df9dd83e40..fd6c4874f8 100644
> --- a/arch/arm/lib/crt0.S
> +++ b/arch/arm/lib/crt0.S
> @@ -109,7 +109,7 @@ ENTRY(_main)
>         mov     r9, r0
>         bl      board_init_f_init_reserve
>
> -#if defined(CONFIG_SPL_EARLY_BSS)
> +#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_EARLY_BSS)
>         SPL_CLEAR_BSS
>  #endif
>
> --
> 2.17.1
>