Right now the ROCKCHIP_SPL_BACK_TO_BROM option both triggers
compilation of the bootrom hook-code as well as enabling the
behaviour of loading the full U-Boot via the boot.

New added socs may always need the bootrom code, while still
being able to decide between loading U-Boot regularly or via
the bootrom separately.

So move the compilation of the bootrom code to a hidden option
that gets selected by ROCKCHIP_SPL_BACK_TO_BROM, but can also
be selected by other parts.

Signed-off-by: Heiko Stuebner <he...@sntech.de>
Reviewed-by: Simon Glass <s...@chromium.org>
Tested-by: Kever Yang <kever.y...@rock-chips.com>
---
 arch/arm/mach-rockchip/Kconfig  | 4 ++++
 arch/arm/mach-rockchip/Makefile | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 5c4a4c2291..a776df35f4 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -37,11 +37,15 @@ config ROCKCHIP_RK3399
 config ROCKCHIP_SPL_BACK_TO_BROM
        bool "SPL returns to bootrom"
        default y if ROCKCHIP_RK3036
+       select ROCKCHIP_BROM_HELPER
        help
          Rockchip SoCs have ability to load SPL & U-Boot binary. If enabled,
           SPL will return to the boot rom, which will then load the U-Boot
           binary to keep going on.
 
+config ROCKCHIP_BROM_HELPER
+       bool
+
 config SPL_MMC_SUPPORT
        default y if !ROCKCHIP_SPL_BACK_TO_BROM
 
diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile
index 6e79fed485..f9ccc9bb2c 100644
--- a/arch/arm/mach-rockchip/Makefile
+++ b/arch/arm/mach-rockchip/Makefile
@@ -7,7 +7,7 @@
 ifdef CONFIG_SPL_BUILD
 obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036-board-spl.o
 obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288-board-spl.o
-obj-$(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM) += save_boot_param.o
+obj-$(CONFIG_ROCKCHIP_BROM_HELPER) += save_boot_param.o
 else
 obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288-board.o
 obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036-board.o
-- 
2.11.0

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