[U-Boot] [U-Boot, v4, 17/66] armv8: spl: Support separate stack for TPL

[Philipp Tomsich]

> To allow a TPL and SPL to run from different addresses/memories, we
> need to split setup of the TPL and SPL stacks.  To do so, we introduce
> CONFIG_TPL_STACK (not listed in Kconfig) which can be used to override
> the initial stack pointer for TPL.
> 
> To provide backward compatibility for existing boards, this is added
> as an optional configuration item and the normal search order (i.e.
> SPL_STACK, then SYS_STACK) apply if not defined.
> 
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> 
> Reviewed-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Tom Rini <trini at konsulko.com>
> ---
> 
> Changes in v4: None
> Changes in v3: None
> Changes in v2: None
> 
>  arch/arm/lib/crt0_64.S       | 4 +++-
>  scripts/config_whitelist.txt | 1 +
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 

Applied to u-boot-rockchip, thanks!