Makefile: Move Linux kernel and Device Tree paths to Kconfig

Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>

Kconfig

@@ -4,7 +4,8 @@
 #
 mainmenu "uniLoader Configuration"
 
-config CROSS_COMPILE
+menu "Building options"
+	config CROSS_COMPILE
 		string "Cross-compiler tool prefix"
 		help
 		  Same as running 'make CROSS_COMPILE=prefix-' but stored for
@@ -12,6 +13,27 @@ config CROSS_COMPILE
 		  need to set this unless you want the configured kernel build
 		  directory to select the cross-compiler automatically.
 
+	config EMBED_LINUX
+		bool "Embed linux kernel and device tree"
+		default y
+		help
+		  Select this if you want uniLoader to load a linux kernel and device tree
+
+	config KERNEL_PATH
+		string "Path to kernel image"
+		depends on EMBED_LINUX
+		default blob/Image
+		help
+		  Path to the kernel, which is going to get embedded to uniLoader
+
+	config DT_PATH
+		string "Path to device tree image"
+		depends on EMBED_LINUX
+		default blob/dtb
+		help
+		  Path to the device tree, which is going to get embedded to uniLoader
+endmenu
+
 source "lib/Kconfig"
 
 source "soc/Kconfig"

Makefile

@@ -1,11 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
 
-#
-# Defaut values
-#
-KERNEL_PATH?=blob/Image
-DTB_PATH?=blob/dtb
-
 # *DOCUMENTATION*
 # To see a list of typical targets execute "make help"
 # More info can be located in ./README
@@ -106,6 +100,8 @@ VPATH		:= $(srctree)
 export srctree objtree VPATH
 
 CROSS_COMPILE	?= $(CONFIG_CROSS_COMPILE:"%"=%)
+KERNEL_PATH	?= $(CONFIG_KERNEL_PATH:"%"=%)
+DT_PATH	?= $(CONFIG_DT_PATH:"%"=%)
 
 KCONFIG_CONFIG	?= .config
 export KCONFIG_CONFIG
@@ -362,7 +358,7 @@ quiet_cmd_uniLoader = LD      $@.o
       cmd_uniLoader = $(LD) $(main-y) $(uniLoader-libs) -o $@.o --script=main/linker.lds
 
 main/linker.lds: main/linker.lds.S $(KERNEL_PATH)
-	$(CPP) $< -DKERNEL_PATH=$(KERNEL_PATH) -DDTB_PATH=$(DTB_PATH) -P -o $@
+	$(CPP) $< -DKERNEL_PATH=$(KERNEL_PATH) -DDTB_PATH=$(DT_PATH) -P -o $@
 
 uniLoader: $(uniLoader-all)
 	$(call if_changed,uniLoader)
@@ -385,7 +381,6 @@ PHONY += $(uniLoader-dirs)
 $(uniLoader-dirs): scripts_basic
 	$(Q)$(MAKE) $(build)=$@
 
-
 ###
 # Cleaning is done on three levels.
 # make clean     Delete most generated files
@@ -416,7 +411,7 @@ clean: $(clean-dirs)
 	$(call cmd,rmfiles)
 	@find . $(RCS_FIND_IGNORE) \
 		\( -name '*.[oas]' -o -name '.*.cmd' \
-		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
+		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' -o -name '*.lds' \
 		-o -name modules.builtin -o -name '.tmp_*.o.*' \
 		-o -name '*.gcno' \) -type f -print | xargs rm -f