Configuration (via .config), single entry point for options

.gitignore

@@ -67,11 +67,17 @@ tools/ecc256/ecc256_keygen
 cscope.out
 tags
 
-# Generated files using target.h
+# Generated files
+.wolfboot-config
+include/target.h
 .wolfboot-arch-offset
 .wolfboot-offset
 .wolfboot-partition-size
+.bootloader-partition-size
 
 # Test tools
 tools/test-expect-version/test-expect-version
 tools/test-update-server/server
+config/*.ld
+
+

Makefile

@@ -3,34 +3,13 @@
 # Configure by passing alternate values
 # via environment variables.
 #
-# Default values:
+# Configuration values: see tools/config.mk
-ARCH?=ARM
+-include .config
-TARGET?=stm32f4
+include tools/config.mk
-SIGN?=ED25519
-KINETIS?=$(HOME)/src/FRDM-K64F
-KINETIS_CPU=MK64FN1M0VLL12
-KINETIS_DRIVERS?=$(KINETIS)/devices/MK64F12
-KINETIS_CMSIS?=$(KINETIS)/CMSIS
-FREEDOM_E_SDK?=$(HOME)/src/freedom-e-sdk
-DEBUG?=0
-VTOR?=1
-CORTEX_M0?=0
-NO_ASM?=0
-EXT_FLASH?=0
-SPI_FLASH?=0
-ALLOW_DOWNGRADE?=0
-NVM_FLASH_WRITEONCE?=0
-WOLFBOOT_VERSION?=0
-V?=0
-SPMATH?=1
-RAM_CODE?=0
-DUALBANK_SWAP=0
-
-
 
 ## Initializers
 CFLAGS:=-D__WOLFBOOT  -DWOLFBOOT_VERSION=$(WOLFBOOT_VERSION)UL
-LSCRIPT:=hal/$(TARGET).ld
+LSCRIPT:=config/target.ld
 LDFLAGS:=-T $(LSCRIPT) -Wl,-gc-sections -Wl,-Map=wolfboot.map -ffreestanding -nostartfiles
 OBJS:= \
 ./hal/$(TARGET).o \
@@ -43,6 +22,7 @@ OBJS:= \
 ./lib/wolfssl/wolfcrypt/src/wolfmath.o \
 ./lib/wolfssl/wolfcrypt/src/fe_low_mem.o
 
+
 ## Architecture/CPU configuration
 include arch.mk
 
@@ -136,26 +116,23 @@ wolfboot.hex: wolfboot.elf
 	$(Q)$(OBJCOPY) -O ihex $^ $@
 
 align: wolfboot-align.bin
-
+	
-wolfboot-align.bin: wolfboot.bin
+.bootloader-partition-size:
-	@cat include/target.h | grep WOLFBOOT_PARTITION_BOOT_ADDRESS | tr -d "\n\r" | sed -e "s/.*[ ]//g" > .wolfboot-offset
+	@printf "%d" $(WOLFBOOT_PARTITION_BOOT_ADDRESS) > .wolfboot-offset
-	@printf "%d" `cat .wolfboot-offset` > .wolfboot-offset
 	@printf "%d" $(ARCH_FLASH_OFFSET) > .wolfboot-arch-offset
-	@expr `cat .wolfboot-offset` - `cat .wolfboot-arch-offset` > .wolfboot-partition-size
+	@expr `cat .wolfboot-offset` - `cat .wolfboot-arch-offset` > .bootloader-partition-size
-	@dd if=/dev/zero bs=`cat .wolfboot-partition-size` count=1 2>/dev/null | tr "\000" "\377" > $(@)
+	@rm -f .wolfboot-offset .wolfboot-arch-offset
-	@#rm -f .wolfboot-partition-size .wolfboot-offset .wolfboot-arch-offset
+
-	@dd if=$^ of=$(@) conv=notrunc 2>/dev/null
+wolfboot-align.bin: .bootloader-partition-size wolfboot.bin
+	@dd if=/dev/zero bs=`cat .bootloader-partition-size` count=1 2>/dev/null | tr "\000" "\377" > $(@)
+	@dd if=wolfboot.bin of=$(@) conv=notrunc 2>/dev/null
 	@echo
 	@echo "\t[SIZE]"
 	@$(SIZE) wolfboot.elf
 	@echo
 
-test-app/image.bin:
+test-app/image.bin: wolfboot-align.bin
-	@make -C test-app TARGET=$(TARGET) EXT_FLASH=$(EXT_FLASH) SPI_FLASH=$(SPI_FLASH) ARCH=$(ARCH) \
+	@make -C test-app
-    V=$(V) RAM_CODE=$(RAM_CODE) WOLFBOOT_VERSION=$(WOLFBOOT_VERSION)\
-	KINETIS=$(KINETIS) KINETIS_CPU=$(KINETIS_CPU) KINETIS_DRIVERS=$(KINETIS_DRIVERS) \
-	KINETIS_CMSIS=$(KINETIS_CMSIS) NVM_FLASH_WRITEONCE=$(NVM_FLASH_WRITEONCE) \
-	FREEDOM_E_SDK=$(FREEDOM_E_SDK)
 	@rm -f src/*.o hal/*.o
 	@$(SIZE) test-app/image.elf
 
@@ -173,10 +150,15 @@ factory.bin: $(BOOT_IMG) wolfboot-align.bin $(PRIVATE_KEY)
 	@echo "\t[MERGE] $@"
 	@cat wolfboot-align.bin test-app/image_v1_signed.bin > $@
 
-wolfboot.elf: $(OBJS) $(LSCRIPT)
+wolfboot.elf: include/target.h $(OBJS) $(LSCRIPT)
 	@echo "\t[LD] $@"
 	$(Q)$(LD) $(LDFLAGS) -Wl,--start-group $(OBJS) -Wl,--end-group -o $@
 
+$(LSCRIPT): hal/$(TARGET).ld .bootloader-partition-size FORCE
+	@cat hal/$(TARGET).ld | \
+		sed -e "s/##WOLFBOOT_PARTITION_BOOT_ADDRESS##/`cat .bootloader-partition-size`/g" \
+		> $@
+
 src/ed25519_pub_key.c: ed25519.der
 
 src/ecc256_pub_key.c: ecc256.der
@@ -185,12 +167,23 @@ keys: $(PRIVATE_KEY)
 	
 clean:
 	@find . -type f -name "*.o" | xargs rm -f
-	@rm -f *.bin *.elf wolfboot.map *.bin  *.hex
+	@rm -f *.bin *.elf wolfboot.map *.bin  *.hex config/target.ld
 	@make -C test-app clean
 
 distclean: clean
-	@rm -f *.pem *.der tags ./src/ed25519_pub_key.c ./src/ecc256_pub_key.c
+	@rm -f *.pem *.der tags ./src/ed25519_pub_key.c ./src/ecc256_pub_key.c include/target.h
 
+include/target.h: include/target.h.in FORCE
+	@cat include/target.h.in | \
+	sed -e "s/##WOLFBOOT_PARTITION_SIZE##/$(WOLFBOOT_PARTITION_SIZE)/g" | \
+	sed -e "s/##WOLFBOOT_SECTOR_SIZE##/$(WOLFBOOT_SECTOR_SIZE)/g" | \
+	sed -e "s/##WOLFBOOT_PARTITION_BOOT_ADDRESS##/$(WOLFBOOT_PARTITION_BOOT_ADDRESS)/g" | \
+	sed -e "s/##WOLFBOOT_PARTITION_UPDATE_ADDRESS##/$(WOLFBOOT_PARTITION_UPDATE_ADDRESS)/g" | \
+	sed -e "s/##WOLFBOOT_PARTITION_SWAP_ADDRESS##/$(WOLFBOOT_PARTITION_SWAP_ADDRESS)/g" \
+		> $@
+
+config: FORCE
+	make -C config
 
 %.o:%.c
 	@echo "\t[CC-$(ARCH)] $@"
@@ -202,3 +195,4 @@ distclean: clean
 
 FORCE: 
 
+.PHONY: FORCE clean

config/Makefile

@@ -0,0 +1,8 @@
+-include ../.config
+include ../tools/config.mk
+config:
+	rm -f ../config/target.ld
+	rm -f ../.config
+	rm -f ../include/target.h
+	@$(foreach q, $(CONFIG_VARS), a=$($q); echo -n $q \? [$$a] :; a=$($q); read SH_$q; test -z $$SH_$q && SH_$q=$$a; echo "$q?=$$SH_$q" >> ../.config;)
+

config/examples/hifive1.config

@@ -0,0 +1,21 @@
+ARCH?=RISCV
+TARGET?=hifive1
+SIGN?=ECC256
+FREEDOM_E_SDK?=~/src/freedom-e-sdk
+DEBUG?=0
+VTOR?=1
+CORTEX_M0?=0
+NO_ASM?=1
+ALLOW_DOWNGRADE?=0
+NVM_FLASH_WRITEONCE?=0
+WOLFBOOT_VERSION?=1
+V?=0
+SPMATH?=1
+RAM_CODE?=1
+DUALBANK_SWAP?=0
+IMAGE_HEADER_SIZE?=256
+WOLFBOOT_PARTITION_SIZE?=0x80000
+WOLFBOOT_SECTOR_SIZE?=0x1000
+WOLFBOOT_PARTITION_BOOT_ADDRESS?=0x20020000
+WOLFBOOT_PARTITION_UPDATE_ADDRESS?=0x20060000
+WOLFBOOT_PARTITION_SWAP_ADDRESS?=0x200A0000

config/examples/stm32f7-dualbank.config

@@ -0,0 +1,22 @@
+ARCH?=ARM
+TARGET?=stm32f7
+SIGN?=ECC256
+DEBUG?=0
+VTOR?=1
+CORTEX_M0?=0
+NO_ASM?=0
+EXT_FLASH?=0
+SPI_FLASH?=0
+ALLOW_DOWNGRADE?=0
+NVM_FLASH_WRITEONCE?=0
+WOLFBOOT_VERSION?=1
+V?=0
+SPMATH?=1
+RAM_CODE?=1
+DUALBANK_SWAP?=1
+IMAGE_HEADER_SIZE?=256
+WOLFBOOT_PARTITION_SIZE?=0x80000
+WOLFBOOT_SECTOR_SIZE?=0x20000
+WOLFBOOT_PARTITION_BOOT_ADDRESS?=0x8020000
+WOLFBOOT_PARTITION_UPDATE_ADDRESS?=0x8120000
+WOLFBOOT_PARTITION_SWAP_ADDRESS?=0x0

config/examples/stm32wb-small.config

@@ -0,0 +1,4 @@
+TARGET=stm32wb
+SIGN=ECC256
+WOLFBOOT_PARTITION_BOOT_ADDRESS=0xA000
+WOLFBOOT_PARTITION_SIZE=0x4000

hal/cc26x2.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x0010000
+    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
     RAM (rwx) :  ORIGIN = 0x20002800, LENGTH = 0xD800
 }
 

hal/hifive1.ld

@@ -4,7 +4,7 @@ ENTRY( _reset )
 
 MEMORY
 {
-  FLASH(rxai!w) : ORIGIN = 0x20010000, LENGTH = 64K
+  FLASH(rxai!w) : ORIGIN = 0x20010000, LENGTH = ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
   RAM(wxa!ri) : ORIGIN = 0x80000000, LENGTH = 16K
 }
 

hal/kinetis.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x000A000
+    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
     RAM (rwx)  : ORIGIN = 0x1FFF0000, LENGTH = 64K
 }
 

hal/nrf52.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x0001f000, LENGTH = 0x0010000
+    FLASH (rx) : ORIGIN = 0x0001f000, LENGTH = ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
     RAM (rwx) :  ORIGIN = 0x20002800, LENGTH = 0xD800
 }
 

hal/samr21.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x0010000
+    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
     RAM (rwx) :  ORIGIN = 0x20000000, LENGTH = 0x4000
 }
 

hal/stm32f4.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x001FFE0
+    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
     RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00010000
 }
 
@@ -16,6 +16,13 @@ SECTIONS
         _end_text = .;
     } > FLASH
 
+    .edidx :
+    {
+        . = ALIGN(4);
+        *(.ARM.exidx*)
+    } > FLASH
+
+
     _stored_data = .;
     .data : AT (_stored_data)
     {

hal/stm32f7.c

@@ -489,7 +489,9 @@ void RAMFUNCTION fork_bootloader(void)
         flash_erase_sector(i);
     hal_flash_write(WOLFBOOT_ORIG_BOOTLOADER, bootloader_copy_mem, BOOTLOADER_SIZE);
     hal_flash_lock();
-    arch_reboot();
+#ifdef __WOLFBOOT
+    //arch_reboot();
+#endif
 }
 
 

hal/stm32f7.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 0x001FFE0
+    FLASH (rx) : ORIGIN = 0x08000000, LENGTH = ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
     RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00020000 /* mapping TCM only */
 }
 
@@ -15,6 +15,12 @@ SECTIONS
         . = ALIGN(4);
         _end_text = .;
     } > FLASH
+    
+    .edidx :
+    {
+        . = ALIGN(4);
+        *(.ARM.exidx*)
+    } > FLASH
 
     _stored_data = .;
     .data : AT (_stored_data)

hal/stm32g0.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x8000
+    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
     RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008FFF
 }
 

hal/stm32l0.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x8000
+    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
     RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
 }
 

hal/stm32wb.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x8000
+    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
     RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00030000
 }
 
@@ -15,6 +15,12 @@ SECTIONS
         . = ALIGN(4);
         _end_text = .;
     } > FLASH
+    
+    .edidx :
+    {
+        . = ALIGN(4);
+        *(.ARM.exidx*)
+    } > FLASH
 
     _stored_data = .;
     .data : AT (_stored_data)

include/target.h.in

@@ -2,6 +2,8 @@
  *
  * User configurable build-time options for bootloader and application offsets
  *
+ * target.h is automatically generated using the template in target.h.in by running
+ * "make config".
  *
  * Copyright (C) 2019 wolfSSL Inc.
  *
@@ -25,30 +27,11 @@
 #ifndef H_TARGETS_TARGET_
 #define H_TARGETS_TARGET_
 
-/* Example flash partitioning.
+#define WOLFBOOT_SECTOR_SIZE                 ##WOLFBOOT_SECTOR_SIZE##
- * Ensure that your firmware entry point is
+#define WOLFBOOT_PARTITION_BOOT_ADDRESS      ##WOLFBOOT_PARTITION_BOOT_ADDRESS##
- * at FLASH_AREA_IMAGE_0_OFFSET + 0x100
+#define WOLFBOOT_PARTITION_SIZE              ##WOLFBOOT_PARTITION_SIZE## 
- */
+#define WOLFBOOT_PARTITION_UPDATE_ADDRESS    ##WOLFBOOT_PARTITION_UPDATE_ADDRESS##
+#define WOLFBOOT_PARTITION_SWAP_ADDRESS      ##WOLFBOOT_PARTITION_SWAP_ADDRESS##
 
-#define WOLFBOOT_SECTOR_SIZE                 0x20000
-#define WOLFBOOT_PARTITION_BOOT_ADDRESS      0x20000
-
-#ifdef EXT_FLASH
-
-/* Test configuration with 1MB external memory */
-/* (Addresses are relative to the beginning of the ext)*/
-
-#define WOLFBOOT_PARTITION_SIZE              0x80000
-#define WOLFBOOT_PARTITION_UPDATE_ADDRESS    0x00000
-#define WOLFBOOT_PARTITION_SWAP_ADDRESS      0x80000
-
-#else
-
-/* Test configuration with internal memory */
-#define WOLFBOOT_PARTITION_SIZE              0x20000
-#define WOLFBOOT_PARTITION_UPDATE_ADDRESS    0x40000
-#define WOLFBOOT_PARTITION_SWAP_ADDRESS      0x60000
-
-#endif
 
 #endif /* !H_TARGETS_TARGET_ */

test-app/ARM-stm32f7.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x08020100, LENGTH = 0x001FF00
+    FLASH (rx) : ORIGIN = ##WOLFBOOT_TEST_APP_ADDRESS##, LENGTH = ##WOLFBOOT_TEST_APP_SIZE##
     RAM (rwx)  : ORIGIN = 0x20000000, LENGTH = 0x00010000
 }
 
@@ -25,6 +25,8 @@ SECTIONS
         _start_data = .;
         KEEP(*(.data*))
         . = ALIGN(4);
+        KEEP(*(.ramcode))
+        . = ALIGN(4);
         _end_data = .;
     } > RAM
 

test-app/ARM.ld

@@ -1,6 +1,6 @@
 MEMORY
 {
-    FLASH (rx) : ORIGIN = 0x0020100, LENGTH = 0x005FFF
+    FLASH (rx) : ORIGIN = ##WOLFBOOT_TEST_APP_ADDRESS##, LENGTH = ##WOLFBOOT_TEST_APP_SIZE##
     RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 16K /* Run in lowmem */
 }
 
@@ -25,6 +25,8 @@ SECTIONS
         _start_data = .;
         KEEP(*(.data*))
         . = ALIGN(4);
+        KEEP(*(.ramcode))
+        . = ALIGN(4);
         _end_data = .;
     } > RAM
 

test-app/Makefile

@@ -1,3 +1,5 @@
+-include ../.config
+-include ../tools/config.mk
 TARGET?=none
 ARCH?=ARM
 KINETIS_CMSIS?=$(KINETIS)/CMSIS
@@ -19,9 +21,11 @@ ifeq ($(V),0)
   Q=@
 endif
 
-LSCRIPT:=$(ARCH).ld
+ENTRY_POINT=`cat .entry-point-address`
+LSCRIPT:=../config/target-app.ld
+LSCRIPT_TEMPLATE:=$(ARCH).ld
 ifeq ($(TARGET),stm32f7)
-  LSCRIPT=ARM-stm32f7.ld
+  LSCRIPT_TEMPLATE=ARM-stm32f7.ld
   CFLAGS+=-DDUALBANK_SWAP
 endif
 LDFLAGS:=$(CFLAGS) -T $(LSCRIPT) -Wl,-gc-sections -Wl,-Map=image.map
@@ -38,7 +42,7 @@ endif
 ifeq ($(TARGET),kinetis)
   CFLAGS+= -I$(KINETIS_DRIVERS)/drivers -I$(KINETIS_DRIVERS) -DCPU_$(KINETIS_CPU) -I$(KINETIS_CMSIS)/Include -DDEBUG_CONSOLE_ASSERT_DISABLE=1 -DNVM_FLASH_WRITEONCE=1
   APP_OBJS+= $(KINETIS_DRIVERS)/drivers/fsl_clock.o $(KINETIS_DRIVERS)/drivers/fsl_ftfx_flash.o $(KINETIS_DRIVERS)/drivers/fsl_ftfx_cache.o \
-		 $(KINETIS_DRIVERS)/drivers/fsl_ftfx_controller.o $(KINETIS_DRIVERS)/drivers/fsl_gpio.o
+  $(KINETIS_DRIVERS)/drivers/fsl_ftfx_controller.o $(KINETIS_DRIVERS)/drivers/fsl_gpio.o
 endif
 
 ifeq ($(TARGET),stm32g0)
@@ -102,4 +106,20 @@ standalone: image.bin
 	$(Q)$(CC) $(CFLAGS) -c -o $@ $^
 
 clean:
-	@rm -f *.bin *.elf tags *.o
+	@rm -f *.bin *.elf tags *.o $(LSCRIPT)
+
+$(LSCRIPT): $(LSCRIPT_TEMPLATE) FORCE
+	@printf "%d" $(WOLFBOOT_PARTITION_BOOT_ADDRESS) > .wolfboot-offset
+	@printf "%d" $(WOLFBOOT_PARTITION_SIZE) > .partition-size
+	@printf "%d" $(IMAGE_HEADER_SIZE) > .header-size
+	@expr `cat .wolfboot-offset` + `cat .header-size` > .entry-point
+	@printf "0x%X" `cat .entry-point` > .entry-point
+	@expr `cat .partition-size` - `cat .header-size` > .app-size
+	@printf "0x%X" `cat .app-size` > .app-size
+	@ cat $(LSCRIPT_TEMPLATE) | \
+		sed -e "s/##WOLFBOOT_TEST_APP_SIZE##/`cat .app-size`/g" | \
+		sed -e "s/##WOLFBOOT_TEST_APP_ADDRESS##/`cat .entry-point`/g" \
+		> $(@)
+	@rm -f .app-size .entry-point .wolfboot-offset .partition-size .header-size
+
+.PHONY: FORCE clean

test-app/RISCV.ld

@@ -4,7 +4,7 @@ ENTRY( _reset )
 
 MEMORY
 {
-  FLASH(rxai!w) : ORIGIN = 0x20020100, LENGTH = 256K - 0x100
+  FLASH(rxai!w) : ORIGIN = ##WOLFBOOT_TEST_APP_ADDRESS##, LENGTH = ##WOLFBOOT_TEST_APP_SIZE##
   RAM(wxa!ri) : ORIGIN = 0x80001000, LENGTH = 12K
 }
 

test-app/standalone.ld

@@ -28,6 +28,8 @@ SECTIONS
         _start_data = .;
         KEEP(*(.data*))
         . = ALIGN(4);
+        KEEP(*(.ramcode))
+        . = ALIGN(4);
         _end_data = .;
     } > RAM
 

tools/config.mk

@@ -0,0 +1,40 @@
+#Defaults, used by CI
+ifeq ($(ARCH),)
+  ARCH?=ARM
+  TARGET?=stm32f4
+  SIGN?=ED25519
+  KINETIS?=$(HOME)/src/FRDM-K64F
+  KINETIS_CPU=MK64FN1M0VLL12
+  KINETIS_DRIVERS?=$(KINETIS)/devices/MK64F12
+  KINETIS_CMSIS?=$(KINETIS)/CMSIS
+  FREEDOM_E_SDK?=$(HOME)/src/freedom-e-sdk
+  DEBUG?=0
+  VTOR?=1
+  CORTEX_M0?=0
+  NO_ASM?=0
+  EXT_FLASH?=0
+  SPI_FLASH?=0
+  ALLOW_DOWNGRADE?=0
+  NVM_FLASH_WRITEONCE?=0
+  WOLFBOOT_VERSION?=0
+  V?=0
+  SPMATH?=1
+  RAM_CODE?=0
+  DUALBANK_SWAP=0
+  IMAGE_HEADER_SIZE?=256
+  WOLFBOOT_PARTITION_SIZE?=0x20000
+  WOLFBOOT_SECTOR_SIZE?=0x20000
+  WOLFBOOT_PARTITION_BOOT_ADDRESS?=0x20000
+  WOLFBOOT_PARTITION_UPDATE_ADDRESS?=0x40000
+  WOLFBOOT_PARTITION_SWAP_ADDRESS?=0x60000
+endif
+
+
+CONFIG_VARS:= ARCH TARGET SIGN KINETIS KINETIS_CPU KINETIS_DRIVERS \
+	KINETIS_CMSIS FREEDOM_E_SDK DEBUG VTOR CORTEX_M0 NO_ASM EXT_FLASH \
+	SPI_FLASH ALLOW_DOWNGRADE NVM_FLASH_WRITEONCE WOLFBOOT_VERSION V \
+	SPMATH RAM_CODE DUALBANK_SWAP IMAGE_HEADER_SIZE \
+	WOLFBOOT_PARTITION_SIZE WOLFBOOT_SECTOR_SIZE \
+	WOLFBOOT_PARTITION_BOOT_ADDRESS WOLFBOOT_PARTITION_UPDATE_ADDRESS \
+	WOLFBOOT_PARTITION_SWAP_ADDRESS
+