[U-Boot] [U-Boot, v4, 18/66] spl: allow a separate TEXT_BASE, LDSCRIPT and MAX_SIZE for TPL

[Philipp Tomsich]

> For the bringup of the RK3368, we need to support TPL and SPL running
> from different addresses... which requires both stages to use a
> distinct TEXT_BASE.
> 
> This commit adds support for having a separate LDSCRIPT for TPL (which
> is expected to make use of the TPL_MAX_SIZE define) and for having a
> the option of defining TPL_TEXT_BASE and having the TPL stage linked
> against this address.
> 
> Note that the handling of the TEXT_BASE is designed to not interfere
> with the previous assumption that SPL_TEXT_BASE should be used for TPL
> as well, unless TPL_TEXT_BASE is defined.  For this reason, the test
> in Makefile.spl uses the following (seemingly redundant checks):
>  1. looks for $(SPL_TPL_)TEXT_BASE
>  2. looks for SPL_TEXT_BASE (even when building in TPL)
> 
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> Reviewed-by: Simon Glass <sjg at chromium.org>
> ---
> 
> Changes in v4: None
> Changes in v3: None
> Changes in v2: None
> 
>  scripts/Makefile.spl         | 10 ++++++++--
>  scripts/config_whitelist.txt |  3 +++
>  2 files changed, 11 insertions(+), 2 deletions(-)
> 

Applied to u-boot-rockchip, thanks!