spl: add hierarchical defaults for SPL_LDSCRIPT

With SPL_LDSCRIPT moved to Kconfig (and this being a 'string' config
node), all the lingering definitions in header files will cause
warnings/errors due to the redefinition of the configuration item.

As we don't want to pollute the defconfig files (and values should
usually be identical for entire architectures), the defaults are moved
into Kconfig.  Kconfig will always pick the first default that
matches, so please keep these values at the end of each file (to allow
any board-specific Kconfig, which will be included earlier) to
override with an unconditional default setting.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/arm/Kconfig

@@ -618,6 +618,11 @@ config ARCH_MX6
 	select SYS_FSL_SEC_LE
 	select SYS_THUMB_BUILD if SPL
 
+if ARCH_MX6
+config SPL_LDSCRIPT
+        default "arch/arm/mach-omap2/u-boot-spl.lds"
+endif
+
 config ARCH_MX5
 	bool "Freescale MX5"
 	select CPU_V7
@@ -1233,3 +1238,10 @@ source "board/zipitz2/Kconfig"
 source "arch/arm/Kconfig.debug"
 
 endmenu
+
+config SPL_LDSCRIPT
+        default "arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds" if TARGET_APX4DEVKIT || TARGET_BG0900 || TARGET_M28EVK || TARGET_MX23_OLINUXINO || TARGET_MX23EVK || TARGET_MX28EVK || TARGET_SANSA_FUZE_PLUS || TARGET_SC_SPS_1 || TARGET_TS4600 || TARGET_XFI3
+        default "arch/arm/cpu/arm1136/u-boot-spl.lds" if CPU_ARM1136
+	default "arch/arm/cpu/armv8/u-boot-spl.lds" if ARM64
+
+

arch/arm/cpu/armv8/fsl-layerscape/Kconfig

@@ -393,3 +393,6 @@ config SYS_MC_RSV_MEM_ALIGN
 	help
 	  Reserved memory needs to be aligned for MC to use. Default value
 	  is 512MB.
+
+config SPL_LDSCRIPT
+	default "arch/arm/cpu/armv8/u-boot-spl.lds" if ARCH_LS1043A || ARCH_LS1046A || ARCH_LS2080A

arch/arm/mach-at91/Kconfig

@@ -199,4 +199,8 @@ source "board/siemens/corvus/Kconfig"
 source "board/siemens/taurus/Kconfig"
 source "board/siemens/smartweb/Kconfig"
 
+config SPL_LDSCRIPT
+	default "arch/arm/mach-at91/arm926ejs/u-boot-spl.lds" if CPU_ARM926EJS
+	default "arch/arm/mach-at91/armv7/u-boot-spl.lds" if CPU_V7
+
 endif

arch/arm/mach-davinci/Kconfig

@@ -53,4 +53,8 @@ source "board/davinci/ea20/Kconfig"
 source "board/omicron/calimain/Kconfig"
 source "board/lego/ev3/Kconfig"
 
+config SPL_LDSCRIPT
+	default "board/$(BOARDDIR)/u-boot-spl-ipam390.lds" if TARGET_IPAM390
+	default "board/$(BOARDDIR)/u-boot-spl-da850evm.lds"
+
 endif

arch/arm/mach-exynos/Kconfig

@@ -161,4 +161,7 @@ source "board/samsung/smdk5250/Kconfig"
 source "board/samsung/smdk5420/Kconfig"
 source "board/samsung/espresso7420/Kconfig"
 
+config SPL_LDSCRIPT
+	default "board/samsung/common/exynos-uboot-spl.lds" if ARCH_EXYNOS5 || ARCH_EXYNOS4
+
 endif

arch/arm/mach-omap2/Kconfig

@@ -170,4 +170,7 @@ source "board/ti/am335x/Kconfig"
 source "board/compulab/cm_t335/Kconfig"
 source "board/compulab/cm_t43/Kconfig"
 
+config SPL_LDSCRIPT
+        default "arch/arm/mach-omap2/u-boot-spl.lds"
+
 endif

arch/arm/mach-orion5x/Kconfig

@@ -15,4 +15,7 @@ config SYS_SOC
 
 source "board/LaCie/edminiv2/Kconfig"
 
+config SPL_LDSCRIPT
+	default "$(CPUDIR)/orion5x/u-boot-spl.lds" if ORION5X
+
 endif

arch/arm/mach-sunxi/Kconfig

@@ -1,5 +1,8 @@
 if ARCH_SUNXI
 
+config SPL_LDSCRIPT
+	default "arch/arm/cpu/armv7/sunxi/u-boot-spl.lds" if !ARM64
+
 config IDENT_STRING
 	default " Allwinner Technology"
 

arch/arm/mach-zynq/Kconfig

@@ -1,5 +1,8 @@
 if ARCH_ZYNQ
 
+config SPL_LDSCRIPT
+	default "arch/arm/mach-zynq/u-boot-spl.lds"
+
 config SPL_FAT_SUPPORT
 	default y
 

arch/microblaze/Kconfig

@@ -21,4 +21,7 @@ endchoice
 
 source "board/xilinx/microblaze-generic/Kconfig"
 
+config SPL_LDSCRIPT
+	default "arch/microblaze/cpu/u-boot-spl.lds"
+
 endmenu

board/armadeus/apf27/Kconfig

@@ -1,5 +1,8 @@
 if TARGET_APF27
 
+config SPL_LDSCRIPT
+	default "arch/$(ARCH)/cpu/u-boot-spl.lds"
+
 config SYS_BOARD
 	default "apf27"
 

board/freescale/mx31pdk/Kconfig

@@ -1,5 +1,8 @@
 if TARGET_MX31PDK
 
+config SPL_LDSCRIPT
+	default "arch/$(ARCH)/cpu/u-boot-spl.lds"
+
 config SYS_BOARD
 	default "mx31pdk"
 

board/spear/x600/Kconfig

@@ -1,5 +1,8 @@
 if TARGET_X600
 
+config SPL_LDSCRIPT
+	default "arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds"
+
 config SYS_BOARD
 	default "x600"