[PATCH] rockchip: rk3399: allow deselecting SPL_ATF_NO_PLATFORM_PARAM

[Hugh Cole-Baker <sigmaris@gmail.com>]

SPL_ATF_NO_PLATFORM_PARAM is selected by default for RK3399 configs, to
guard against issues when used with TF-A versions that perform
insufficient validation on the platform parameter. However, since commit
8109f738ffa7 "rockchip: increase FDT buffer size" in TF-A, passing a
device tree as platform parameter no longer causes problems for upstream
TF-A for RK3399.

Since SPL_ATF_NO_PLATFORM_PARAM doesn't need to be selected when using
upstream TF-A, change the Kconfig option from select to imply. It'll
still default to being selected but can be deselected by a user if they
know they will be using a compatible version of TF-A.

Signed-off-by: Hugh Cole-Baker <sigmaris@gmail.com>
---
For some background, see this thread on the TF-A list [1].

Since the corresponding required change isn't in a tagged version of
TF-A yet, and I don't know how many RK3399 boards are normally used with
older TF-A versions which required this option, I think it's safest to
keep the default as not sending a platform param to TF-A. Once the next
TF-A version is released, SPL_ATF_NO_PLATFORM_PARAM could be turned off
in defconfigs for boards that use the latest upstream TF-A.

[1]: https://lists.trustedfirmware.org/pipermail/tf-a/2020-June/000502.html

 arch/arm/mach-rockchip/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 0cb1f23d0f3..e2b63265846 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -207,7 +207,6 @@ config ROCKCHIP_RK3399
 	select SUPPORT_TPL
 	select SPL
 	select SPL_ATF
-	select SPL_ATF_NO_PLATFORM_PARAM if SPL_ATF
 	select SPL_BOARD_INIT if SPL
 	select SPL_LOAD_FIT
 	select SPL_CLK if SPL
@@ -232,6 +231,7 @@ config ROCKCHIP_RK3399
 	imply PRE_CONSOLE_BUFFER
 	imply ROCKCHIP_COMMON_BOARD
 	imply ROCKCHIP_SDRAM_COMMON
+	imply SPL_ATF_NO_PLATFORM_PARAM if SPL_ATF
 	imply SPL_ROCKCHIP_COMMON_BOARD
 	imply TPL_SERIAL_SUPPORT
 	imply TPL_LIBCOMMON_SUPPORT
-- 
2.17.2 (Apple Git-113)