ARM: zynq: Simplify zynq configuration

Extending Kconfig for adding new platform is a lot of work
for nothing. Setting SYS_CONFIG_NAME directly in Kconfig and
remove all dependencies on TARGET_ZYNQ_* options including SPL.
As a side-effect it also remove custom init folder for ps7_init_gpl.*
files. Folder is chosen based on device-tree file.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/mach-zynq/Kconfig

 if ARCH_ZYNQ
 
-config ZYNQ_CUSTOM_INIT
-	bool "Use custom ps7_init provided by Xilinx tool"
-	help
-	  U-Boot includes ps7_init_gpl.[ch] for some Zynq board variants.
-	  If you want to override them with customized ones
-	  or ps7_init code for your board is missing, please say Y here
-	  and add ones into board/xilinx/zynq/custom_hw_platform/ directory.
-
-choice
-	prompt "Xilinx Zynq board select"
-	default TARGET_ZYNQ_ZC702
-
-config TARGET_ZYNQ_ZED
-	bool "Zynq ZedBoard"
-
-config TARGET_ZYNQ_MICROZED
-	bool "Zynq MicroZed"
-
-config TARGET_ZYNQ_PICOZED
-	bool "Zynq PicoZed"
-
-config TARGET_ZYNQ_ZC702
-	bool "Zynq ZC702 Board"
-
-config TARGET_ZYNQ_ZC706
-	bool "Zynq ZC706 Board"
-
-config TARGET_ZYNQ_ZC770
-	bool "Zynq ZC770 Board"
-	select ZYNQ_CUSTOM_INIT
-
-config TARGET_ZYNQ_ZYBO
-	bool "Zynq Zybo Board"
-
-endchoice
-
 config SYS_BOARD
 	default "zynq"
 
@@ -46,11 +10,11 @@ config SYS_SOC
 	default "zynq"
 
 config SYS_CONFIG_NAME
-	default "zynq_zed" if TARGET_ZYNQ_ZED
-	default "zynq_microzed" if TARGET_ZYNQ_MICROZED
-	default "zynq_picozed" if TARGET_ZYNQ_PICOZED
-	default "zynq_zc70x" if TARGET_ZYNQ_ZC702 || TARGET_ZYNQ_ZC706
-	default "zynq_zc770" if TARGET_ZYNQ_ZC770
-	default "zynq_zybo" if TARGET_ZYNQ_ZYBO
+	string "Board configuration name"
+	default "zynq-common"
+	help
+	  This option contains information about board configuration name.
+	  Based on this option include/configs/<CONFIG_SYS_CONFIG_NAME>.h header
+	  will be used for board configuration.
 
 endif

board/xilinx/zynq/Makefile

@@ -7,17 +7,7 @@
 
 obj-y	:= board.o
 
-# Copied from Xilinx SDK 2014.4
-hw-platform-$(CONFIG_TARGET_ZYNQ_ZED)		:= zed_hw_platform
-hw-platform-$(CONFIG_TARGET_ZYNQ_MICROZED)	:= MicroZed_hw_platform
-hw-platform-$(CONFIG_TARGET_ZYNQ_ZC702)		:= ZC702_hw_platform
-hw-platform-$(CONFIG_TARGET_ZYNQ_ZC706)		:= ZC706_hw_platform
-hw-platform-$(CONFIG_TARGET_ZYNQ_ZYBO)		:= zybo_hw_platform
-# If you want to use customized ps7_init_gpl.c/h,
-# enable CONFIG_ZYNQ_CUSTOM_INIT and put them into custom_hw_platform/.
-# This line must be placed at the bottom of the list because
-# it takes precedence over the default ones.
-hw-platform-$(CONFIG_ZYNQ_CUSTOM_INIT)		:= custom_hw_platform
+hw-platform-y :=$(shell echo $(CONFIG_DEFAULT_DEVICE_TREE))
 
 init-objs := $(if $(wildcard $(srctree)/$(src)/$(hw-platform-y)/ps7_init_gpl.c),\
 	$(hw-platform-y)/ps7_init_gpl.o)

board/xilinx/zynq/custom_hw_platform/.gitignore

-ps7_init_gpl.[ch]

configs/zynq_microzed_defconfig

 CONFIG_ARM=y
+CONFIG_SYS_CONFIG_NAME="zynq_microzed"
 CONFIG_ARCH_ZYNQ=y
-CONFIG_TARGET_ZYNQ_MICROZED=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-microzed"
 CONFIG_SPL=y
 CONFIG_FIT=y

configs/zynq_picozed_defconfig

 CONFIG_ARM=y
+CONFIG_SYS_CONFIG_NAME="zynq_picozed"
 CONFIG_ARCH_ZYNQ=y
-CONFIG_TARGET_ZYNQ_PICOZED=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-picozed"
 CONFIG_SPL=y
 CONFIG_HUSH_PARSER=y

configs/zynq_zc702_defconfig

 CONFIG_ARM=y
+CONFIG_SYS_CONFIG_NAME="zynq_zc70x"
 CONFIG_ARCH_ZYNQ=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc702"
 CONFIG_SPL=y

configs/zynq_zc706_defconfig

 CONFIG_ARM=y
+CONFIG_SYS_CONFIG_NAME="zynq_zc70x"
 CONFIG_ARCH_ZYNQ=y
-CONFIG_TARGET_ZYNQ_ZC706=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc706"
 CONFIG_SPL=y
 CONFIG_FIT=y

configs/zynq_zc770_xm010_defconfig

 CONFIG_ARM=y
+CONFIG_SYS_CONFIG_NAME="zynq_zc770"
 CONFIG_ARCH_ZYNQ=y
-CONFIG_TARGET_ZYNQ_ZC770=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm010"
 CONFIG_SPL=y
 CONFIG_FIT=y

configs/zynq_zc770_xm011_defconfig

 CONFIG_ARM=y
+CONFIG_SYS_CONFIG_NAME="zynq_zc770"
 CONFIG_ARCH_ZYNQ=y
-CONFIG_TARGET_ZYNQ_ZC770=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm011"
 CONFIG_SPL=y
 CONFIG_FIT=y

configs/zynq_zc770_xm012_defconfig

 CONFIG_ARM=y
+CONFIG_SYS_CONFIG_NAME="zynq_zc770"
 CONFIG_ARCH_ZYNQ=y
-CONFIG_TARGET_ZYNQ_ZC770=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm012"
 CONFIG_SPL=y
 CONFIG_FIT=y