Expose configuration via Kconfig

73 files changed, 950 insertions, 191 deletions

diff --git a/.gitignore b/.gitignore
index c9c518a..9bc48ed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,9 @@
 *.o
 *.su
+/.config
+/.config.old
 /build
+/Kconfig
 /src/app/aemr/main.cc
 /src/app/prototest/nanopb.pb.h
 /src/app/prototest/nanopb.pb.cc
diff --git a/Makefile b/Makefile
index bcbff7b..49a1e16 100644
--- a/Makefile
+++ b/Makefile
@@ -1,116 +1,206 @@
-default: build/system.elf
+# Only load .config when app/arch are not specified on commandline
+ifneq (${app}, )
+	CONFIG_app = ${app}
+else
+	-include .config
+endif
+
+ifneq (${arch}, )
+	CONFIG_arch = ${arch}
+endif
+
+# Make cannot include "foo"/Makefile.inc, so remove quotes from config entries
+quote="
+app_dir = $(subst ${quote},,${CONFIG_app})
+arch_dir = $(subst ${quote},,${CONFIG_arch})
 
-INCLUDES = -Iinclude -Iinclude/arch/${arch}
+INCLUDES = -Iinclude -Iinclude/arch/${arch_dir}
 COMMON_FLAGS = -g -Os -Wall -Wextra
 CFLAGS = -std=c99
 CXXFLAGS = -std=c++14 -fno-rtti -fno-threadsafe-statics -fno-exceptions
 
+QUIET = @
+
 ASM_TARGETS =
 C_TARGETS =
-CXX_TARGETS = src/app/${app}/main.cc src/os/object/cpp_helpers.cc src/os/object/outputstream.cc
-
-QUIET = @
+CXX_TARGETS = src/app/${app_dir}/main.cc src/os/object/cpp_helpers.cc src/os/object/outputstream.cc
 
-ifneq (${verbose}, )
+ifdef verbose
 	QUIET =
 endif
 
+ifneq (${app_dir}, )
+	include src/app/${app_dir}/Makefile.inc
+endif
+
 ifneq (${stack_usage}, )
 	COMMON_FLAGS += -fstack-usage
 endif
 
-ifneq (${app}, )
-	include src/app/${app}/Makefile.inc
-endif
+# Allow .config driver entries to be overriddenvia commandline / environment
 
 ifneq ($(findstring dummy,${drivers}), )
+	CONFIG_driver_dummy = y
+endif
+
+ifneq ($(findstring lm75,${drivers}), )
+	CONFIG_driver_lm75 = y
+endif
+
+ifneq ($(findstring s5851a,${drivers}), )
+	CONFIG_driver_s5851a = y
+endif
+
+ifneq ($(findstring am2320,${drivers}), )
+	CONFIG_driver_am2320 = y
+endif
+
+ifneq ($(findstring bme280,${drivers}), )
+	CONFIG_driver_bme280 = y
+endif
+
+ifneq ($(findstring bme680,${drivers}), )
+	CONFIG_driver_bme680 = y
+endif
+
+ifneq ($(findstring ccs811,${drivers}), )
+	CONFIG_driver_ccs811 = y
+endif
+
+ifneq ($(findstring eeprom24lc64,${drivers}), )
+	CONFIG_driver_eeprom24lc64 = y
+endif
+
+ifneq ($(findstring max44006,${drivers}), )
+	CONFIG_driver_max44006 = y
+endif
+
+ifneq ($(findstring max44009,${drivers}), )
+	CONFIG_driver_max44009 = y
+endif
+
+ifneq ($(findstring hdc1080,${drivers}), )
+	CONFIG_driver_hdc1080 = y
+endif
+
+ifneq ($(findstring mpu9250,${drivers}), )
+	CONFIG_driver_mpu9250 = y
+endif
+
+ifneq ($(findstring mmsimple,${drivers}), )
+	CONFIG_driver_mmsimple = y
+endif
+
+ifneq ($(findstring mmsubstate,${drivers}), )
+	CONFIG_driver_mmsubstate = y
+endif
+
+ifneq ($(findstring nrf24l01,${drivers}), )
+	CONFIG_driver_nrf24l01 = y
+endif
+
+ifneq ($(findstring sharp96,${drivers}), )
+	CONFIG_driver_sharp96 = y
+endif
+
+ifneq ($(findstring resistive_load,${drivers}), )
+	CONFIG_driver_resistive_load = y
+endif
+
+ifneq ($(findstring softi2c,${drivers}), )
+	CONFIG_driver_softi2c = y
+endif
+
+# Load drivers
+
+ifdef CONFIG_driver_dummy
 	CXX_TARGETS += src/driver/dummy.cc
 	COMMON_FLAGS += -DDRIVER_DUMMY
 endif
 
-ifneq ($(findstring lm75,${drivers}), )
+ifdef CONFIG_driver_lm75
 	CXX_TARGETS += src/driver/lm75.cc
 	COMMON_FLAGS += -DDRIVER_LM75
 endif
 
-ifneq ($(findstring s5851a,${drivers}), )
+ifdef CONFIG_driver_s5851a
 	CXX_TARGETS += src/driver/s5851a.cc
 	COMMON_FLAGS += -DDRIVER_S5851A
 endif
 
-ifneq ($(findstring am2320,${drivers}), )
+ifdef CONFIG_driver_am2320
 	CXX_TARGETS += src/driver/am2320.cc
 	COMMON_FLAGS += -DDRIVER_AM2320
 endif
 
-ifneq ($(findstring bme280,${drivers}), )
+ifdef CONFIG_driver_bme280
 	CXX_TARGETS += src/driver/bme280.cc src/driver/bme680_util.cc
 	COMMON_FLAGS += -DDRIVER_BME280
 endif
 
-ifneq ($(findstring bme680,${drivers}), )
+ifdef CONFIG_driver_bme680
 	CXX_TARGETS += src/driver/bme680.cc src/driver/bme680_util.cc
 	COMMON_FLAGS += -DDRIVER_BME680
 endif
 
-ifneq ($(findstring ccs811,${drivers}), )
+ifdef CONFIG_driver_ccs811
 	CXX_TARGETS += src/driver/ccs811.cc
 	COMMON_FLAGS += -DDRIVER_CCS811
 endif
 
-ifneq ($(findstring eeprom24lc64,${drivers}), )
+ifdef CONFIG_driver_eeprom24lc64
 	CXX_TARGETS += src/driver/eeprom24lc64.cc
 	COMMON_FLAGS += -DDRIVER_EEPROM24LC64
 endif
 
-ifneq ($(findstring max44006,${drivers}), )
+ifdef CONFIG_driver_max44006
 	CXX_TARGETS += src/driver/max44006.cc
 	COMMON_FLAGS += -DDRIVER_MAX44006
 endif
 
-ifneq ($(findstring max44009,${drivers}), )
+ifdef CONFIG_driver_max44009
 	CXX_TARGETS += src/driver/max44009.cc
 	COMMON_FLAGS += -DDRIVER_MAX44009
 endif
 
-ifneq ($(findstring hdc1080,${drivers}), )
+ifdef CONFIG_driver_hdc1080
 	CXX_TARGETS += src/driver/hdc1080.cc
 	COMMON_FLAGS += -DDRIVER_HDC1080
 endif
 
-ifneq ($(findstring mpu9250,${drivers}), )
+ifdef CONFIG_driver_mpu9250
 	CXX_TARGETS += src/driver/mpu9250.cc
 	COMMON_FLAGS += -DDRIVER_MPU9250
 endif
 
-ifneq ($(findstring mmsimple,${drivers}), )
+ifdef CONFIG_driver_mmsimple
 	CXX_TARGETS += src/driver/mmsimple.cc
 	COMMON_FLAGS += -DDRIVER_MMSIMPLE
 endif
 
-ifneq ($(findstring mmsubstate,${drivers}), )
+ifdef CONFIG_driver_mmsubstate
 	CXX_TARGETS += src/driver/mmsubstate.cc
 	COMMON_FLAGS += -DDRIVER_MMSUBSTATE
 endif
 
-ifneq ($(findstring nrf24l01,${drivers}), )
+ifdef CONFIG_driver_nrf24l01
 	CXX_TARGETS += src/driver/nrf24l01.cc
-	ifeq (${arch}, msp430fr5994lp)
+	ifeq (${arch_dir}, msp430fr5994lp)
 		nrf24l01_cs_pin ?= p1_3
 		nrf24l01_en_pin ?= p6_2
 		nrf24l01_irq_pin ?= p8_3
 	endif
-	ifeq (${arch}, msp430fr5969lp)
+	ifeq (${arch_dir}, msp430fr5969lp)
 		nrf24l01_en_pin ?= p4_3
 		nrf24l01_cs_pin ?= p2_4
 		nrf24l01_irq_pin ?= p1_5
 	endif
-	ifeq (${arch}, arduino-nano)
+	ifeq (${arch_dir}, arduino-nano)
 		nrf24l01_en_pin ?= pc1
 		nrf24l01_cs_pin ?= pc0
 		nrf24l01_irq_pin ?= pc2
 	endif
-	ifeq (${arch}, arduino-nano-168)
+	ifeq (${arch_dir}, arduino-nano-168)
 		nrf24l01_en_pin ?= pc1
 		nrf24l01_cs_pin ?= pc0
 		nrf24l01_irq_pin ?= pc2
@@ -121,19 +211,19 @@ ifneq ($(findstring nrf24l01,${drivers}), )
 	COMMON_FLAGS += -DNRF24L01_IRQ_PIN=GPIO::${nrf24l01_irq_pin}
 endif
 
-ifneq ($(findstring sharp96,${drivers}), )
+ifdef CONFIG_driver_sharp96
 	CXX_TARGETS += src/driver/sharp96.cc
-	ifeq (${arch}, msp430fr5969lp)
+	ifeq (${arch_dir}, msp430fr5969lp)
 		sharp96_power_pin ?= p4_2
 		sharp96_en_pin ?= p4_3
 		sharp96_cs_pin ?= p2_4
 	endif
-	ifeq (${arch}, msp430fr5994lp)
+	ifeq (${arch_dir}, msp430fr5994lp)
 		sharp96_power_pin ?= p1_2
 		sharp96_en_pin ?= p6_2
 		sharp96_cs_pin ?= p1_3
 	endif
-	ifeq (${arch}, msp430fr5994lp-256k)
+	ifeq (${arch_dir}, msp430fr5994lp-256k)
 		sharp96_power_pin ?= p1_2
 		sharp96_en_pin ?= p6_2
 		sharp96_cs_pin ?= p1_3
@@ -144,7 +234,7 @@ ifneq ($(findstring sharp96,${drivers}), )
 	COMMON_FLAGS += -DSHARP96_CS_PIN=GPIO::${sharp96_cs_pin}
 endif
 
-ifneq ($(findstring resistive_load,${drivers}), )
+ifdef CONFIG_driver_resistive_load
 	CXX_TARGETS += src/driver/resistive_load.cc
 	resistor1_pin ?= p3_0
 	resistor2_pin ?= p3_1
@@ -157,17 +247,25 @@ ifneq ($(findstring resistive_load,${drivers}), )
 	COMMON_FLAGS += -DRESISTIVE_LOAD_PIN4=GPIO::${resistor4_pin}
 endif
 
-ifneq ($(findstring softi2c,${drivers}), )
+ifdef CONFIG_driver_softi2c
 	CXX_TARGETS += src/driver/soft_i2c.cc
 	COMMON_FLAGS += -DDRIVER_SOFTI2C
 endif
 
+# Configure drivers (TODO: Kconfig)
+
 ifneq (${i2c_freq}, )
-	COMMON_FLAGS += -DF_I2C=${i2c_freq}
+	CONFIG_i2c_freq = ${i2c_freq}
+endif
+ifdef CONFIG_i2c_freq
+	COMMON_FLAGS += -DF_I2C=${CONFIG_i2c_freq}
 endif
 
 ifneq (${timer_freq}, )
-	COMMON_FLAGS += -DF_TIMER=${timer_freq}
+	CONFIG_timer_freq = ${timer_freq}
+endif
+ifdef CONFIG_timer_freq
+	COMMON_FLAGS += -DF_TIMER=${CONFIG_timer_freq}
 endif
 
 ifeq (${softi2c_pullup}, internal)
@@ -191,43 +289,42 @@ ifeq (${softi2c_timer}, 1)
 	COMMON_FLAGS += -DSOFTI2C_TIMER
 endif
 
-ifeq (${kout_nop}, 1)
-	COMMON_FLAGS += -DKOUT_NOP
-endif
-
-ifeq (${timer_cycles}, 1)
-	COMMON_FLAGS += -DTIMER_CYCLES
-endif
-
 ifeq (${timer_us}, 1)
 	COMMON_FLAGS += -DTIMER_US
 endif
 
-ifeq (${timer_s}, 1)
-	COMMON_FLAGS += -DTIMER_S
-endif
-
 ifeq (${loop}, 1)
 	COMMON_FLAGS += -DWITH_LOOP
 endif
+ifdef CONFIG_loop
+	COMMON_FLAGS += -DWITH_LOOP
+endif
 
 ifeq (${wakeup}, 1)
 	COMMON_FLAGS += -DWITH_WAKEUP
 endif
+ifdef CONFIG_wakeup
+	COMMON_FLAGS += -DWITH_WAKEUP
+endif
 
 ifeq (${ostream}, 1)
 	COMMON_FLAGS += -DWITH_OSTREAM
 endif
+ifdef CONFIG_ostream
+	COMMON_FLAGS += -DWITH_OSTREAM
+endif
 
 ifeq (${trace_malloc}, 1)
 	CXX_TARGETS += src/lib/mpmalloc.cc
 	COMMON_FLAGS += -DMULTIPASS_TRACE_MALLOC
 endif
 
-ifneq (${arch}, )
-	include src/arch/${arch}/Makefile.inc
+ifneq (${arch_dir}, )
+	include src/arch/${arch_dir}/Makefile.inc
 endif
 
+default: build/system.elf
+
 stack: default
 	${QUIET}test -n "${OBJDUMP}"
 	${QUIET}test -n "${ARCH_SHORTNAME}"
@@ -238,13 +335,19 @@ stackm: default
 	${QUIET}test -n "${ARCH_SHORTNAME}"
 	${QUIET}script/static-stack-analyze.pl --machine-readable ${OBJDUMP} ${ARCH_SHORTNAME} ${OBJECTS}
 
+Kconfig: script/mkconfig
+	${QUIET}script/mkconfig > Kconfig
+
+config: Kconfig
+	${QUIET}kconfig-qconf Kconfig
+
 clean: arch_clean
 	rm -f build/system.elf
 
 help: arch_help
 	@echo
 	@echo "common flags:"
-	@echo "    timer_cycles timer_us timer_s -- enable specific timers. May be mutually exclusive"
+	@echo "    timer_us timer_s -- enable specific timers. May be mutually exclusive"
 	@echo "    loop -- enable loop() function"
 	@echo "    i2c_freq -- I2C Frequency in Hz"
 	@echo "    timer_freq -- Timer frequency in Hz"
@@ -260,8 +363,8 @@ help: arch_help
 	@echo "    trace_malloc -- trace mpmalloc/mpcalloc/mprealloc calls on stdout"
 	@echo "    stack_usage -- Generate .su files for stack usage estimation (-> make stack)"
 	@echo
-	@echo "${arch} drivers:"
-	@ls -1 src/arch/${arch}/driver | fgrep .c | cut -d . -f 1 | sed 's/^/    /'
+	@echo "${arch_dir} drivers:"
+	@ls -1 src/arch/${arch_dir}/driver | fgrep .c | cut -d . -f 1 | sed 's/^/    /'
 	@echo
 	@echo "common drivers:"
 	@ls -1 src/driver | fgrep .c | cut -d . -f 1 | sed 's/^/    /'
@@ -275,4 +378,4 @@ info: arch_info
 	@echo "CXXFLAGS: ${CXXFLAGS}"
 	@echo "Selected (common/arch) drivers: ${drivers} / ${arch_drivers}"
 
-.PHONY: clean default stack stackm help info
+.PHONY: clean config default stack stackm help info
diff --git a/script/mkconfig b/script/mkconfig
new file mode 100755
index 0000000..b6d50a3
--- /dev/null
+++ b/script/mkconfig
@@ -0,0 +1,92 @@
+#!/bin/sh
+
+cat <<EOF
+
+menu "System"
+
+config loop
+bool "Regularly call loop()"
+
+config wakeup
+bool "Call wakeup() on wakeup"
+
+config ostream
+bool "C++ ostream support in stdout"
+
+config i2c_freq
+int "I2C Frequency [Hz]"
+range 1000 100000
+default 100000
+depends on meta_driver_i2c
+
+config timer_freq
+int "Timer Frequency"
+range 1 10000
+default 10
+depends on meta_driver_timer
+
+endmenu
+
+choice Architecture
+bool "Architecture"
+
+EOF
+
+for arch in $(ls -1 src/arch); do
+	echo config arch_${arch} | tr - _
+	echo bool '"'"$(cat src/arch/${arch}/prompt)"'"'
+	echo
+done
+
+echo endchoice
+echo
+
+for arch in $(ls -1 src/arch); do
+	echo config arch
+	echo string
+	echo default '"'"${arch}"'"'
+	echo depends on arch_${arch} | tr - _
+	echo
+done
+
+for arch in $(ls -1 src/arch); do
+	if [ -e "src/arch/${arch}/Kconfig" ]; then
+		echo menu '"'"$(cat src/arch/${arch}/prompt) Configuration"'"'
+		echo depends on arch_${arch} | tr - _
+		echo
+		cat "src/arch/${arch}/Kconfig"
+		echo
+		echo endmenu
+		echo
+	fi
+done
+
+cat <<EOF
+choice Application
+bool "Application"
+
+EOF
+
+for app in $(ls -1 src/app); do
+	echo config app_${app} | tr - _
+	if [ -e "src/app/${app}/Kconfig" ]; then
+		echo bool
+		cat src/app/${app}/Kconfig
+	else
+		echo bool '"'${app}'"'
+	fi
+	echo
+done
+
+echo endchoice
+echo
+
+for app in $(ls -1 src/app); do
+	echo config app
+	echo string
+	echo default '"'"${app}"'"'
+	echo depends on app_${app} | tr - _
+	echo
+done
+
+cat src/driver/Kconfig
diff --git a/src/app/aemr/Kconfig b/src/app/aemr/Kconfig
new file mode 100644
index 0000000..9c5fc80
--- /dev/null
+++ b/src/app/aemr/Kconfig
@@ -0,0 +1,2 @@
+prompt "Automatic Energy Model Refinement"
+depends on !loop && !wakeup
diff --git a/src/app/aemr/Makefile.inc b/src/app/aemr/Makefile.inc
index 6e2dda3..7ed7630 100644
--- a/src/app/aemr/Makefile.inc
+++ b/src/app/aemr/Makefile.inc
@@ -1 +1,3 @@
-override arch_drivers += ,counter
+ifdef app
+	override arch_drivers += ,counter
+endif
diff --git a/src/app/blinkencat3/Kconfig b/src/app/blinkencat3/Kconfig
new file mode 100644
index 0000000..f9230ea
--- /dev/null
+++ b/src/app/blinkencat3/Kconfig
@@ -0,0 +1,2 @@
+prompt "Blinkencat 3"
+depends on (arch_arduino_nano || arch_arduino_nano_168) && meta_driver_neopixel && !loop && !wakeup
diff --git a/src/app/blinkencat3/Makefile.inc b/src/app/blinkencat3/Makefile.inc
index 1bf2b59..2d2d859 100644
--- a/src/app/blinkencat3/Makefile.inc
+++ b/src/app/blinkencat3/Makefile.inc
@@ -1,2 +1,4 @@
-override loop = 1
-override arch_drivers += ,neopixel
+ifdef app
+	override loop = 1
+	override arch_drivers += ,neopixel
+endif
diff --git a/src/app/button-and-motion-logger/Kconfig b/src/app/button-and-motion-logger/Kconfig
new file mode 100644
index 0000000..fe5d888
--- /dev/null
+++ b/src/app/button-and-motion-logger/Kconfig
@@ -0,0 +1,2 @@
+prompt "Button and Motion Logger"
+depends on meta_driver_adc && driver_mpu9250 && !loop && !wakeup
diff --git a/src/app/button-and-motion-logger/Makefile.inc b/src/app/button-and-motion-logger/Makefile.inc
index f433287..eff5706 100644
--- a/src/app/button-and-motion-logger/Makefile.inc
+++ b/src/app/button-and-motion-logger/Makefile.inc
@@ -1,2 +1,4 @@
-arch_drivers += ,adc,i2c
-override drivers += ,mpu9250
+ifdef app
+	override arch_drivers += ,adc,i2c
+	override drivers += ,mpu9250
+endif
diff --git a/src/app/ccs811test/Kconfig b/src/app/ccs811test/Kconfig
new file mode 100644
index 0000000..a219a0f
--- /dev/null
+++ b/src/app/ccs811test/Kconfig
@@ -0,0 +1,2 @@
+prompt "CCS811 Logger"
+depends on driver_ccs811 && loop && !wakeup
diff --git a/src/app/ccs811test/Makefile.inc b/src/app/ccs811test/Makefile.inc
index 4889e55..6bc097a 100644
--- a/src/app/ccs811test/Makefile.inc
+++ b/src/app/ccs811test/Makefile.inc
@@ -1,3 +1,5 @@
-override arch_drivers += ,i2c
-override drivers += ,ccs811
-loop ?= 1
+ifdef app
+	override arch_drivers += ,i2c
+	override drivers += ,ccs811
+	override loop = 1
+endif
diff --git a/src/app/countertest/Kconfig b/src/app/countertest/Kconfig
new file mode 100644
index 0000000..141c3f6
--- /dev/null
+++ b/src/app/countertest/Kconfig
@@ -0,0 +1,2 @@
+prompt "Cycle Counter Test"
+depends on meta_driver_counter && loop && !wakeup
diff --git a/src/app/countertest/Makefile.inc b/src/app/countertest/Makefile.inc
index f8a5514..0bf380e 100644
--- a/src/app/countertest/Makefile.inc
+++ b/src/app/countertest/Makefile.inc
@@ -1,2 +1,4 @@
-loop ?= 1
-override arch_drivers += ,counter
+ifdef app
+	override loop = 1
+	override arch_drivers += ,counter
+endif
diff --git a/src/app/donothing/Makefile.inc b/src/app/donothing/Makefile.inc
index 0608a82..bf22978 100644
--- a/src/app/donothing/Makefile.inc
+++ b/src/app/donothing/Makefile.inc
@@ -1,3 +1,4 @@
-timer_cycles = 0
-timer_s = 0
-loop = 0
+ifdef app
+	override timer_s = 0
+	override loop = 0
+endif
diff --git a/src/app/i2cbench/Makefile.inc b/src/app/i2cbench/Makefile.inc
index 15ce127..c5241fd 100644
--- a/src/app/i2cbench/Makefile.inc
+++ b/src/app/i2cbench/Makefile.inc
@@ -1,4 +1,6 @@
-arch_drivers += ,i2c
+ifdef app
+	override arch_drivers += ,i2c
+endif
 
 ifneq (${i2cbench_setos}, )
 	COMMON_FLAGS += -DI2CBENCH_SETOS=${i2cbench_setos}
diff --git a/src/app/i2cdetect/Kconfig b/src/app/i2cdetect/Kconfig
new file mode 100644
index 0000000..d0415f0
--- /dev/null
+++ b/src/app/i2cdetect/Kconfig
@@ -0,0 +1,2 @@
+prompt "I2C Bus Scanner"
+depends on meta_driver_i2c
diff --git a/src/app/i2cdetect/Makefile.inc b/src/app/i2cdetect/Makefile.inc
index 7620800..c76489c 100644
--- a/src/app/i2cdetect/Makefile.inc
+++ b/src/app/i2cdetect/Makefile.inc
@@ -1,3 +1,4 @@
-arch_drivers += ,i2c
-drivers += ,lm75
-loop ?= 1
+ifdef app
+	override loop = 1
+	override arch_drivers += ,i2c
+endif
diff --git a/src/app/ledblink/Kconfig b/src/app/ledblink/Kconfig
new file mode 100644
index 0000000..0075bf8
--- /dev/null
+++ b/src/app/ledblink/Kconfig
@@ -0,0 +1,2 @@
+prompt "LED Blink"
+depends on loop && !wakeup
diff --git a/src/app/ledblink/Makefile.inc b/src/app/ledblink/Makefile.inc
index 2cb8a42..ec71d40 100644
--- a/src/app/ledblink/Makefile.inc
+++ b/src/app/ledblink/Makefile.inc
@@ -1 +1,3 @@
-loop ?= 1
+ifdef app
+	override loop = 1
+endif
diff --git a/src/app/loratest/Makefile.inc b/src/app/loratest/Makefile.inc
index 2cb8a42..ec71d40 100644
--- a/src/app/loratest/Makefile.inc
+++ b/src/app/loratest/Makefile.inc
@@ -1 +1,3 @@
-loop ?= 1
+ifdef app
+	override loop = 1
+endif
diff --git a/src/app/luxlog/Kconfig b/src/app/luxlog/Kconfig
new file mode 100644
index 0000000..6e1c6e6
--- /dev/null
+++ b/src/app/luxlog/Kconfig
@@ -0,0 +1,2 @@
+prompt "Ambient Brightness Logger"
+depends on driver_max44009
diff --git a/src/app/luxlog/Makefile.inc b/src/app/luxlog/Makefile.inc
index bcee1d0..a0cbcd8 100644
--- a/src/app/luxlog/Makefile.inc
+++ b/src/app/luxlog/Makefile.inc
@@ -1,3 +1,5 @@
-arch_drivers += ,i2c
-drivers += ,max44009
-loop ?= 1
+ifdef app
+	override loop = 1
+	override arch_drivers += ,i2c
+	override drivers += ,max44009
+endif
diff --git a/src/app/mpu9250_motionlog/Kconfig b/src/app/mpu9250_motionlog/Kconfig
new file mode 100644
index 0000000..27d605f
--- /dev/null
+++ b/src/app/mpu9250_motionlog/Kconfig
@@ -0,0 +1,2 @@
+prompt "Motion Logger"
+depends on driver_mpu9250
diff --git a/src/app/mpu9250_motionlog/Makefile.inc b/src/app/mpu9250_motionlog/Makefile.inc
index 5da92be..ed959ca 100644
--- a/src/app/mpu9250_motionlog/Makefile.inc
+++ b/src/app/mpu9250_motionlog/Makefile.inc
@@ -1,2 +1,4 @@
-arch_drivers += ,i2c
-override drivers += ,mpu9250
+ifdef app
+	override arch_drivers += ,i2c
+	override drivers += ,mpu9250
+endif
diff --git a/src/app/nrf24l01test/Makefile.inc b/src/app/nrf24l01test/Makefile.inc
index 6713ddb..f84bcbd 100644
--- a/src/app/nrf24l01test/Makefile.inc
+++ b/src/app/nrf24l01test/Makefile.inc
@@ -1,6 +1,8 @@
-override drivers += ,nrf24l01
-timer_s ?= 1
-loop ?= 1
+ifdef app
+	override loop = 1
+	override timer_s = 1
+	override drivers += ,nrf24l01
+endif
 
 ifeq (${tx}, 1)
 	COMMON_FLAGS += -DNRF24L01TEST_TX
diff --git a/src/app/sharp96test/Kconfig b/src/app/sharp96test/Kconfig
new file mode 100644
index 0000000..30b9ac3
--- /dev/null
+++ b/src/app/sharp96test/Kconfig
@@ -0,0 +1,2 @@
+prompt "Sharp96 Test"
+depends on driver_sharp96
diff --git a/src/app/sharp96test/Makefile.inc b/src/app/sharp96test/Makefile.inc
index 4dbcaca..37bb857 100644
--- a/src/app/sharp96test/Makefile.inc
+++ b/src/app/sharp96test/Makefile.inc
@@ -1 +1,5 @@
-driver_sharp96 ?= 1
+ifdef app
+	override loop = 1
+	override arch_drivers += spi_b
+	override drivers += sharp96
+endif
diff --git a/src/app/shell/Kconfig b/src/app/shell/Kconfig
new file mode 100644
index 0000000..a4626d6
--- /dev/null
+++ b/src/app/shell/Kconfig
@@ -0,0 +1,2 @@
+prompt "Shell / UART Echo"
+depends on meta_driver_stdin && wakeup
diff --git a/src/app/shell/Makefile.inc b/src/app/shell/Makefile.inc
index 66d80ec..3d73351 100644
--- a/src/app/shell/Makefile.inc
+++ b/src/app/shell/Makefile.inc
@@ -1,2 +1,5 @@
-arch_drivers += ,stdin
-wakeup ?= 1
+ifdef app
+	override loop = 0
+	override wakeup = 1
+	override arch_drivers += ,stdin
+endif
diff --git a/src/app/shell/main.cc b/src/app/shell/main.cc
index 33896e4..0a7d4ca 100644
--- a/src/app/shell/main.cc
+++ b/src/app/shell/main.cc
@@ -2,7 +2,6 @@
 #include "driver/gpio.h"
 #include "driver/stdout.h"
 #include "driver/stdin.h"
-#include "driver/uptime.h"
 
 /*
 void check_command(unsigned char argc, char** argv)
diff --git a/src/app/sysinfo/Makefile.inc b/src/app/sysinfo/Makefile.inc
index 4cc2151..ec71d40 100644
--- a/src/app/sysinfo/Makefile.inc
+++ b/src/app/sysinfo/Makefile.inc
@@ -1 +1,3 @@
-loop = 1
+ifdef app
+	override loop = 1
+endif
diff --git a/src/app/timertest/Makefile.inc b/src/app/timertest/Makefile.inc
index 9d375f1..9754020 100644
--- a/src/app/timertest/Makefile.inc
+++ b/src/app/timertest/Makefile.inc
@@ -1,3 +1,5 @@
-loop ?= 1
-timer_s ?= 1
-arch_drivers += ,timer
+ifdef app
+	override loop = 1
+	override timer_s = 1
+	override arch_drivers += ,timer
+endif
diff --git a/src/app/transactiontest/Makefile.inc b/src/app/transactiontest/Makefile.inc
index 63d2323..25d4378 100644
--- a/src/app/transactiontest/Makefile.inc
+++ b/src/app/transactiontest/Makefile.inc
@@ -1,7 +1,6 @@
-timer_cycles ?= 1
-timer_s ?= 1
-loop ?= 1
+ifdef app
+	override loop = 1
+	override timer_s = 1
+endif
 
-driver_sharp96 ?= 1
-
-ASM_TARGETS += src/app/transactiontest/util.S
\ No newline at end of file
+ASM_TARGETS += src/app/transactiontest/util.S
diff --git a/src/app/waittest/Makefile.inc b/src/app/waittest/Makefile.inc
index 9d375f1..9754020 100644
--- a/src/app/waittest/Makefile.inc
+++ b/src/app/waittest/Makefile.inc
@@ -1,3 +1,5 @@
-loop ?= 1
-timer_s ?= 1
-arch_drivers += ,timer
+ifdef app
+	override loop = 1
+	override timer_s = 1
+	override arch_drivers += ,timer
+endif
diff --git a/src/app/wetterstation/Kconfig b/src/app/wetterstation/Kconfig
new file mode 100644
index 0000000..691784c
--- /dev/null
+++ b/src/app/wetterstation/Kconfig
@@ -0,0 +1,2 @@
+prompt "Wetterstation"
+depends on meta_driver_adc && (arch_arduino_nano || arch_arduino_nano_168)
diff --git a/src/app/wetterstation/Makefile.inc b/src/app/wetterstation/Makefile.inc
index 2cb8a42..ec71d40 100644
--- a/src/app/wetterstation/Makefile.inc
+++ b/src/app/wetterstation/Makefile.inc
@@ -1 +1,3 @@
-loop ?= 1
+ifdef app
+	override loop = 1
+endif
diff --git a/src/app/ws2812b_dmap/Makefile.inc b/src/app/ws2812b_dmap/Makefile.inc
index ce0a386..a515d32 100644
--- a/src/app/ws2812b_dmap/Makefile.inc
+++ b/src/app/ws2812b_dmap/Makefile.inc
@@ -1,2 +1,4 @@
-loop ?= 1
-arch_drivers += ,stdin,neopixel
+ifdef app
+	override loop = 1
+	override arch_drivers += ,stdin,neopixel
+endif
diff --git a/src/app/ws2812b_uart/Kconfig b/src/app/ws2812b_uart/Kconfig
new file mode 100644
index 0000000..7566e4c
--- /dev/null
+++ b/src/app/ws2812b_uart/Kconfig
@@ -0,0 +1,2 @@
+prompt "UART to WS2812b"
+depends on (arch_arduino_nano || arch_arduino_nano_168) && meta_driver_neopixel
diff --git a/src/app/ws2812b_uart/Makefile.inc b/src/app/ws2812b_uart/Makefile.inc
index ce0a386..a515d32 100644
--- a/src/app/ws2812b_uart/Makefile.inc
+++ b/src/app/ws2812b_uart/Makefile.inc
@@ -1,2 +1,4 @@
-loop ?= 1
-arch_drivers += ,stdin,neopixel
+ifdef app
+	override loop = 1
+	override arch_drivers += ,stdin,neopixel
+endif
diff --git a/src/arch/arduino-nano-168/Kconfig b/src/arch/arduino-nano-168/Kconfig
new file mode 100644
index 0000000..0d8b25c
--- /dev/null
+++ b/src/arch/arduino-nano-168/Kconfig
@@ -0,0 +1,37 @@
+config arch_arduino_nano_168_driver_adc
+bool "ADC (Analog-Digital-Converter)"
+select meta_driver_adc
+
+config arch_arduino_nano_168_driver_i2c
+bool "I2C"
+select meta_driver_i2c
+
+config arch_arduino_nano_168_driver_neopixel
+bool "WS2812b (NeoPixel)"
+select meta_driver_neopixel
+
+config arch_arduino_nano_168_driver_spi
+bool "SPI"
+select meta_driver_spi
+
+config arch_arduino_nano_168_driver_stdin
+bool "UART Input"
+select meta_driver_stdin
+
+config arch_arduino_nano_168_driver_timer
+bool "Timer with Interrupts"
+select meta_driver_timer
+
+choice arch_arduino_nano_168_timer1
+bool "Timer 1"
+optional
+
+config arch_arduino_nano_168_driver_uptime
+bool "Uptime Counter"
+select meta_driver_uptime
+
+config arch_arduino_nano_168_driver_counter
+bool "Cycle Counter"
+select meta_driver_counter
+
+endchoice
diff --git a/src/arch/arduino-nano-168/Makefile.inc b/src/arch/arduino-nano-168/Makefile.inc
index 844fc1d..21ccf2f 100644
--- a/src/arch/arduino-nano-168/Makefile.inc
+++ b/src/arch/arduino-nano-168/Makefile.inc
@@ -27,38 +27,78 @@ ifeq (${aspectc}, 1)
 	CXX = ag++ -r build/repo.acp -v 0 --c_compiler avr-g++ -p . --Xcompiler
 endif
 
-CXX_TARGETS += src/arch/arduino-nano/arch.cc
-CXX_TARGETS += src/arch/arduino-nano/driver/gpio.cc
-CXX_TARGETS += src/arch/arduino-nano/driver/stdout.cc
-CXX_TARGETS += src/arch/arduino-nano/driver/uptime.cc
+CXX_TARGETS += src/arch/arduino-nano-168/arch.cc
+CXX_TARGETS += src/arch/arduino-nano-168/driver/gpio.cc
+CXX_TARGETS += src/arch/arduino-nano-168/driver/stdout.cc
+
+# Command-line driver selection
 
 ifneq ($(findstring softi2c,${drivers}), )
 else ifneq ($(findstring i2c,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/i2c.cc
+	CONFIG_arch_arduino_nano_168_driver_i2c = y
 endif
 
 ifneq ($(findstring adc,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/adc.cc
+	CONFIG_arch_arduino_nano_168_driver_adc = y
 endif
 
 ifneq ($(findstring spi,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/spi.cc
+	CONFIG_arch_arduino_nano_168_driver_spi = y
 endif
 
 ifneq ($(findstring stdin,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/stdin.cc
+	CONFIG_arch_arduino_nano_168_driver_stdin = y
 endif
 
 ifneq ($(findstring timer,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/timer.cc
+	CONFIG_arch_arduino_nano_168_driver_timer = y
 endif
 
 ifneq ($(findstring counter,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/counter.cc
+	CONFIG_arch_arduino_nano_168_driver_counter = y
 endif
 
 ifneq ($(findstring neopixel,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/neopixel.cc
+	CONFIG_arch_arduino_nano_168_driver_neopixel = y
+endif
+
+ifeq (${timer_s}, 1)
+	CONFIG_arch_arduino_nano_168_driver_uptime = y
+endif
+
+# Kconfig driver selection
+
+ifdef CONFIG_arch_arduino_nano_168_driver_i2c
+	CXX_TARGETS += src/arch/arduino-nano-168/driver/i2c.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_168_driver_adc
+	CXX_TARGETS += src/arch/arduino-nano-168/driver/adc.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_168_driver_spi
+	CXX_TARGETS += src/arch/arduino-nano-168/driver/spi.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_168_driver_stdin
+	CXX_TARGETS += src/arch/arduino-nano-168/driver/stdin.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_168_driver_timer
+	CXX_TARGETS += src/arch/arduino-nano-168/driver/timer.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_168_driver_counter
+	CXX_TARGETS += src/arch/arduino-nano-168/driver/counter.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_168_driver_neopixel
+	CXX_TARGETS += src/arch/arduino-nano-168/driver/neopixel.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_168_driver_uptime
+	COMMON_FLAGS += -DTIMER_S
+	CXX_TARGETS += src/arch/arduino-nano-168/driver/uptime.cc
 endif
 
 ifeq (${cpu_freq}, 16000000)
diff --git a/src/arch/arduino-nano-168/prompt b/src/arch/arduino-nano-168/prompt
new file mode 100644
index 0000000..88c9b61
--- /dev/null
+++ b/src/arch/arduino-nano-168/prompt
@@ -0,0 +1 @@
+Arduino Nano (Mega168)
diff --git a/src/arch/arduino-nano/Kconfig b/src/arch/arduino-nano/Kconfig
new file mode 100644
index 0000000..7054d44
--- /dev/null
+++ b/src/arch/arduino-nano/Kconfig
@@ -0,0 +1,37 @@
+config arch_arduino_nano_driver_adc
+bool "ADC (Analog-Digital-Converter)"
+select meta_driver_adc
+
+config arch_arduino_nano_driver_i2c
+bool "I2C"
+select meta_driver_i2c
+
+config arch_arduino_nano_driver_neopixel
+bool "WS2812b (NeoPixel)"
+select meta_driver_neopixel
+
+config arch_arduino_nano_driver_spi
+bool "SPI"
+select meta_driver_spi
+
+config arch_arduino_nano_driver_stdin
+bool "UART Input"
+select meta_driver_stdin
+
+config arch_arduino_nano_driver_timer
+bool "Timer with Interrupts"
+select meta_driver_timer
+
+choice arch_arduino_nano_timer1
+bool "Timer 1"
+optional
+
+config arch_arduino_nano_driver_uptime
+bool "Uptime Counter"
+select meta_driver_uptime
+
+config arch_arduino_nano_driver_counter
+bool "Cycle Counter"
+select meta_driver_counter
+
+endchoice
diff --git a/src/arch/arduino-nano/Makefile.inc b/src/arch/arduino-nano/Makefile.inc
index 5445bc1..a3412fb 100644
--- a/src/arch/arduino-nano/Makefile.inc
+++ b/src/arch/arduino-nano/Makefile.inc
@@ -30,37 +30,77 @@ endif
 CXX_TARGETS += src/arch/arduino-nano/arch.cc
 CXX_TARGETS += src/arch/arduino-nano/driver/gpio.cc
 CXX_TARGETS += src/arch/arduino-nano/driver/stdout.cc
-CXX_TARGETS += src/arch/arduino-nano/driver/uptime.cc
+
+# Command-line driver selection
 
 ifneq ($(findstring softi2c,${drivers}), )
 else ifneq ($(findstring i2c,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/i2c.cc
+	CONFIG_arch_arduino_nano_driver_i2c = y
 endif
 
 ifneq ($(findstring adc,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/adc.cc
+	CONFIG_arch_arduino_nano_driver_adc = y
 endif
 
 ifneq ($(findstring spi,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/spi.cc
+	CONFIG_arch_arduino_nano_driver_spi = y
 endif
 
 ifneq ($(findstring stdin,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/stdin.cc
+	CONFIG_arch_arduino_nano_driver_stdin = y
 endif
 
 ifneq ($(findstring timer,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/timer.cc
+	CONFIG_arch_arduino_nano_driver_timer = y
 endif
 
 ifneq ($(findstring counter,${arch_drivers}), )
-	CXX_TARGETS += src/arch/arduino-nano/driver/counter.cc
+	CONFIG_arch_arduino_nano_driver_counter = y
 endif
 
 ifneq ($(findstring neopixel,${arch_drivers}), )
+	CONFIG_arch_arduino_nano_driver_neopixel = y
+endif
+
+ifeq (${timer_s}, 1)
+	CONFIG_arch_arduino_nano_driver_uptime = y
+endif
+
+# Kconfig driver selection
+
+ifdef CONFIG_arch_arduino_nano_driver_i2c
+	CXX_TARGETS += src/arch/arduino-nano/driver/i2c.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_driver_adc
+	CXX_TARGETS += src/arch/arduino-nano/driver/adc.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_driver_spi
+	CXX_TARGETS += src/arch/arduino-nano/driver/spi.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_driver_stdin
+	CXX_TARGETS += src/arch/arduino-nano/driver/stdin.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_driver_timer
+	CXX_TARGETS += src/arch/arduino-nano/driver/timer.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_driver_counter
+	CXX_TARGETS += src/arch/arduino-nano/driver/counter.cc
+endif
+
+ifdef CONFIG_arch_arduino_nano_driver_neopixel
 	CXX_TARGETS += src/arch/arduino-nano/driver/neopixel.cc
 endif
 
+ifdef CONFIG_arch_arduino_nano_driver_uptime
+	COMMON_FLAGS += -DTIMER_S
+	CXX_TARGETS += src/arch/arduino-nano/driver/uptime.cc
+endif
+
 ifeq (${cpu_freq}, 16000000)
 	uart_baud = 57600
 else ifeq (${cpu_freq}, 8000000)
diff --git a/src/arch/arduino-nano/arch.cc b/src/arch/arduino-nano/arch.cc
index 1023927..48b50f8 100644
--- a/src/arch/arduino-nano/arch.cc
+++ b/src/arch/arduino-nano/arch.cc
@@ -38,11 +38,6 @@ void Arch::setup(void)
 #error Unsupported F_CPU
 #endif
 
-#ifdef TIMER_CYCLES
-	TCCR0A = 0;
-	TCCR0B = _BV(CS00);
-#endif
-
 #if defined(WITH_LOOP) || defined(TIMER_S)
 	TCCR1A = 0;
 	TCCR1B = _BV(WGM12) | _BV(CS12) | _BV(CS10); // /1024
diff --git a/src/arch/arduino-nano/prompt b/src/arch/arduino-nano/prompt
new file mode 100644
index 0000000..1994e4c
--- /dev/null
+++ b/src/arch/arduino-nano/prompt
@@ -0,0 +1 @@
+Arduino Nano (Mega328)
diff --git a/src/arch/blinkenrocket/Kconfig b/src/arch/blinkenrocket/Kconfig
new file mode 100644
index 0000000..5b9a830
--- /dev/null
+++ b/src/arch/blinkenrocket/Kconfig
@@ -0,0 +1,10 @@
+config arch_blinkenrocket_driver_i2c
+bool "I2C"
+select meta_driver_i2c
+
+config arch_blinkenrocket_driver_uptime
+bool "Uptime Counter"
+select meta_driver_uptime
+
+config arch_blinkenrocket_kout_nop
+bool "Disable UART emulation for stdout"
diff --git a/src/arch/blinkenrocket/Makefile.inc b/src/arch/blinkenrocket/Makefile.inc
index ea4e183..ba66152 100644
--- a/src/arch/blinkenrocket/Makefile.inc
+++ b/src/arch/blinkenrocket/Makefile.inc
@@ -22,13 +22,32 @@ endif
 CXX_TARGETS += src/arch/blinkenrocket/arch.cc
 CXX_TARGETS += src/arch/blinkenrocket/driver/gpio.cc
 CXX_TARGETS += src/arch/blinkenrocket/driver/stdout.cc
-CXX_TARGETS += src/arch/blinkenrocket/driver/uptime.cc
 
 ifneq ($(findstring softi2c,${drivers}), )
 else ifneq ($(findstring i2c,${arch_drivers}), )
+	CONFIG_arch_blinkenrocket_driver_i2c = y
+endif
+
+ifeq (${timer_s}, 1)
+	CONFIG_arch_blinkenrocket_driver_uptime = y
+endif
+
+ifdef CONFIG_arch_blinkenrocket_driver_i2c
 	CXX_TARGETS += src/arch/blinkenrocket/driver/i2c.cc
 endif
 
+ifdef CONFIG_arch_blinkenrocket_driver_uptime
+	COMMON_FLAGS += -DTIMER_S
+	CXX_TARGETS += src/arch/blinkenrocket/driver/uptime.cc
+endif
+
+ifeq (${kout_nop}, 1)
+	COMMON_FLAGS += -DKOUT_NOP
+endif
+ifdef CONFIG_arch_blinkenrocket_kout_nop
+	COMMON_FLAGS += -DKOUT_NOP
+endif
+
 OBJECTS = ${CXX_TARGETS:.cc=.o} ${C_TARGETS:.c=.o}
 
 .cc.o:
diff --git a/src/arch/blinkenrocket/arch.cc b/src/arch/blinkenrocket/arch.cc
index 1261515..d49bfda 100644
--- a/src/arch/blinkenrocket/arch.cc
+++ b/src/arch/blinkenrocket/arch.cc
@@ -5,10 +5,6 @@
 
 void Arch::setup(void)
 {
-#ifdef TIMER_CYCLES
-	TCCR0A = _BV(CS00);
-#endif
-
 #if defined(WITH_LOOP) || defined(TIMER_S)
 	TCCR1A = 0;
 	TCCR1B = _BV(WGM12) | _BV(CS12) | _BV(CS10); // /1024
diff --git a/src/arch/blinkenrocket/prompt b/src/arch/blinkenrocket/prompt
new file mode 100644
index 0000000..9972aaa
--- /dev/null
+++ b/src/arch/blinkenrocket/prompt
@@ -0,0 +1 @@
+Blinkenrocket
diff --git a/src/arch/esp8266/Kconfig b/src/arch/esp8266/Kconfig
new file mode 100644
index 0000000..5542dd5
--- /dev/null
+++ b/src/arch/esp8266/Kconfig
@@ -0,0 +1,11 @@
+config arch_esp8266_driver_counter
+bool "Cycle Counter"
+select meta_driver_counter
+
+config arch_esp8266_driver_stdin
+bool "UART Input"
+select meta_driver_stdin
+
+config arch_esp8266_driver_uptime
+bool "Uptime Counter"
+select meta_driver_uptime
diff --git a/src/arch/esp8266/Makefile.inc b/src/arch/esp8266/Makefile.inc
index c1bb621..44a3cd7 100644
--- a/src/arch/esp8266/Makefile.inc
+++ b/src/arch/esp8266/Makefile.inc
@@ -22,7 +22,7 @@ CXXFLAGS = -std=c++11 -fno-rtti -fno-threadsafe-statics
 LDFLAGS += -nostdlib -Wl,--no-check-sections -u call_user_start -Wl,-static
 
 CXX_TARGETS += src/arch/esp8266/arch.cc src/arch/esp8266/driver/gpio.cc
-CXX_TARGETS += src/arch/esp8266/driver/stdout.cc src/arch/esp8266/driver/uptime.cc
+CXX_TARGETS += src/arch/esp8266/driver/stdout.cc
 
 OBJECTS = ${CXX_TARGETS:.cc=.o} ${C_TARGETS:.c=.o}
 
@@ -30,14 +30,35 @@ ifeq (${esp8266_led2}, 1)
 	COMMON_FLAGS += -DLED_ON_GPIO16
 endif
 
+# Commandline
+
+ifneq ($(findstring counter,${arch_drivers}), )
+	CONFIG_arch_esp8266_driver_counter = y
+endif
+
 ifneq ($(findstring stdin,${arch_drivers}), )
-	CXX_TARGETS += src/arch/esp8266/driver/stdin.cc
+	CONFIG_arch_esp8266_driver_stdin = y
 endif
 
-ifneq ($(findstring counter,${arch_drivers}), )
+ifeq (${timer_s}, 1)
+	CONFIG_arch_esp8266_driver_uptime = y
+endif
+
+# Kconfig
+
+ifdef CONFIG_arch_esp8266_driver_counter
 	CXX_TARGETS += src/arch/esp8266/driver/counter.cc
 endif
 
+ifdef CONFIG_arch_esp8266_driver_stdin
+	CXX_TARGETS += src/arch/esp8266/driver/stdin.cc
+endif
+
+ifdef CONFIG_arch_esp8266_driver_uptime
+	COMMON_FLAGS += -DTIMER_S
+	CXX_TARGETS += src/arch/esp8266/driver/uptime.cc
+endif
+
 .cc.o:
 	${QUIET}${CXX} ${INCLUDES} ${COMMON_FLAGS} ${CXXFLAGS} -c -o $@ ${@:.o=.cc}
 	${QUIET}${OBJCOPY} --rename-section .text=.irom0.text --rename-section .literal=.irom0.literal $@
diff --git a/src/arch/esp8266/prompt b/src/arch/esp8266/prompt
new file mode 100644
index 0000000..3428bc3
--- /dev/null
+++ b/src/arch/esp8266/prompt
@@ -0,0 +1 @@
+ESP8266
diff --git a/src/arch/msp430fr5969lp/Kconfig b/src/arch/msp430fr5969lp/Kconfig
new file mode 100644
index 0000000..015d78d
--- /dev/null
+++ b/src/arch/msp430fr5969lp/Kconfig
@@ -0,0 +1,31 @@
+config arch_msp430fr5969lp_driver_adc
+bool "ADC (Analog-Digital-Converter)"
+select meta_driver_adc
+
+config arch_msp430fr5969lp_driver_counter
+bool "Cycle Counter"
+select meta_driver_counter
+
+config arch_msp430fr5969lp_driver_i2c
+bool "I2C on eUSCI_B0"
+select meta_driver_i2c
+
+config arch_msp430fr5969lp_driver_spi_a1
+bool "SPI on eUSCI_A1"
+select meta_driver_spi
+
+config arch_msp430fr5969lp_driver_spi_b
+bool "SPI on eUSCI_B0"
+select meta_driver_spi
+
+config arch_msp430fr5969lp_driver_stdin
+bool "UART Input"
+select meta_driver_stdin
+
+config arch_msp430fr5969lp_driver_timer
+bool "Timer with Interrupts"
+select meta_driver_timer
+
+config arch_msp430fr5969lp_driver_uptime
+bool "Uptime Counter"
+select meta_driver_uptime
diff --git a/src/arch/msp430fr5969lp/Makefile.inc b/src/arch/msp430fr5969lp/Makefile.inc
index 2c1e64c..8a48859 100644
--- a/src/arch/msp430fr5969lp/Makefile.inc
+++ b/src/arch/msp430fr5969lp/Makefile.inc
@@ -25,45 +25,86 @@ SIZE = /opt/msp430/ti/msp430-gcc-full-linux-5.1.2.0/bin/msp430-elf-size
 ARCH_SHORTNAME = msp430
 
 CXX_TARGETS += src/arch/msp430fr5969lp/arch.cc
+CXX_TARGETS += src/arch/msp430fr5969lp/driver/gpio.cc
+CXX_TARGETS += src/arch/msp430fr5969lp/driver/stdout.cc
 
 ifeq (${aspectc}, 1)
 	CXX = ag++ -r build/repo.acp -v 0 --c_compiler /opt/msp430/ti/msp430-gcc-full-linux-5.1.2.0/bin/msp430-elf-g++ -p . --Xcompiler
 endif
 
+# Command-line
+
 ifneq ($(findstring adc,${arch_drivers}), )
-	CXX_TARGETS += src/arch/msp430fr5969lp/driver/adc.cc
+	CONFIG_arch_msp430fr5969lp_driver_adc = y
 endif
 
-CXX_TARGETS += src/arch/msp430fr5969lp/driver/gpio.cc
-CXX_TARGETS += src/arch/msp430fr5969lp/driver/stdout.cc
-CXX_TARGETS += src/arch/msp430fr5969lp/driver/uptime.cc
-
 ifneq ($(findstring stdin,${arch_drivers}), )
-	CXX_TARGETS += src/arch/msp430fr5969lp/driver/stdin.cc
+	CONFIG_arch_msp430fr5969lp_driver_stdin = y
 endif
 
 ifneq ($(findstring softi2c,${drivers}), )
 else ifneq ($(findstring i2c,${arch_drivers}), )
+	CONFIG_arch_msp430fr5969lp_driver_i2c = y
+endif
+
+ifneq ($(findstring spi_a1,${arch_drivers}), )
+	CONFIG_arch_msp430fr5969lp_driver_spi_a1 = y
+endif
+
+ifneq ($(findstring spi_b,${arch_drivers}), )
+	CONFIG_arch_msp430fr5969lp_driver_spi_b = y
+endif
+
+ifneq ($(findstring timer,${arch_drivers}), )
+	CONFIG_arch_msp430fr5969lp_driver_timer = y
+endif
+
+ifneq ($(findstring counter,${arch_drivers}), )
+	CONFIG_arch_msp430fr5969lp_driver_counter = y
+endif
+
+ifeq (${timer_s}, 1)
+	CONFIG_arch_msp430fr5969lp_driver_uptime = y
+endif
+
+# Kconfig
+
+ifdef CONFIG_arch_msp430fr5969lp_driver_adc
+	CXX_TARGETS += src/arch/msp430fr5969lp/driver/adc.cc
+endif
+
+ifdef CONFIG_arch_msp430fr5969lp_driver_stdin
+	CXX_TARGETS += src/arch/msp430fr5969lp/driver/stdin.cc
+endif
+
+ifdef CONFIG_arch_msp430fr5969lp_driver_i2c
 	CXX_TARGETS += src/arch/msp430fr5969lp/driver/i2c.cc
 	COMMON_FLAGS += -DDRIVER_I2C
 endif
 
-ifneq ($(findstring spi_a1,${arch_drivers}), )
+ifdef CONFIG_arch_msp430fr5969lp_driver_spi_a1
 	CXX_TARGETS += src/arch/msp430fr5969lp/driver/spi_a1.cc
 endif
 
-ifneq ($(findstring spi_b,${arch_drivers}), )
+ifdef CONFIG_arch_msp430fr5969lp_driver_spi_b
 	CXX_TARGETS += src/arch/msp430fr5969lp/driver/spi_b.cc
 endif
 
-ifneq ($(findstring timer,${arch_drivers}), )
+ifdef CONFIG_arch_msp430fr5969lp_driver_timer
 	CXX_TARGETS += src/arch/msp430fr5969lp/driver/timer.cc
 endif
 
-ifneq ($(findstring counter,${arch_drivers}), )
+ifdef CONFIG_arch_msp430fr5969lp_driver_counter
 	CXX_TARGETS += src/arch/msp430fr5969lp/driver/counter.cc
 endif
 
+ifdef CONFIG_arch_msp430fr5969lp_driver_uptime
+	COMMON_FLAGS += -DTIMER_S
+	CXX_TARGETS += src/arch/msp430fr5969lp/driver/uptime.cc
+endif
+
+
+
 ifneq (${cpu_freq}, )
 	COMMON_FLAGS += -DF_CPU=${cpu_freq}UL
 else
diff --git a/src/arch/msp430fr5969lp/arch.cc b/src/arch/msp430fr5969lp/arch.cc
index fb7d167..5385d16 100644
--- a/src/arch/msp430fr5969lp/arch.cc
+++ b/src/arch/msp430fr5969lp/arch.cc
@@ -89,12 +89,6 @@ void Arch::setup(void)
 	TA1CCR0 = 4096;
 	TA1CTL |= TACLR | TAIE;
 #endif
-
-#ifdef TIMER_CYCLES
-	TA2CTL = TASSEL__SMCLK | ID__1 | MC__CONTINUOUS;
-	TA2EX0 = 0;
-	TA2CTL |= TACLR;
-#endif
 }
 
 #ifdef WITH_WAKEUP
diff --git a/src/arch/msp430fr5969lp/driver/counter.cc b/src/arch/msp430fr5969lp/driver/counter.cc
index 7a5aca2..741b543 100644
--- a/src/arch/msp430fr5969lp/driver/counter.cc
+++ b/src/arch/msp430fr5969lp/driver/counter.cc
@@ -2,10 +2,6 @@
 #include "driver/counter.h"
 #include "driver/gpio.h"
 
-#if defined(TIMER_CYCLES)
-#warn "timer_cycles and counter are mutually exclusive. Expect odd behaviour."
-#endif
-
 Counter counter;
 
 #ifndef __acweaving
diff --git a/src/arch/msp430fr5969lp/prompt b/src/arch/msp430fr5969lp/prompt
new file mode 100644
index 0000000..a8f2b86
--- /dev/null
+++ b/src/arch/msp430fr5969lp/prompt
@@ -0,0 +1 @@
+MSP430FR5969 Launchpad
diff --git a/src/arch/msp430fr5994lp-256k/Kconfig b/src/arch/msp430fr5994lp-256k/Kconfig
new file mode 100644
index 0000000..750ed76
--- /dev/null
+++ b/src/arch/msp430fr5994lp-256k/Kconfig
@@ -0,0 +1,31 @@
+config arch_msp430fr5994lp_256k_driver_adc
+bool "ADC (Analog-Digital-Converter)"
+select meta_driver_adc
+
+config arch_msp430fr5994lp_256k_driver_counter
+bool "Cycle Counter"
+select meta_driver_counter
+
+config arch_msp430fr5994lp_256k_driver_i2c
+bool "I2C on eUSCI_B1"
+select meta_driver_i2c
+
+config arch_msp430fr5994lp_256k_driver_spi_a1
+bool "SPI on eUSCI_A1"
+select meta_driver_spi
+
+config arch_msp430fr5994lp_256k_driver_spi_b
+bool "SPI on eUSCI_B1"
+select meta_driver_spi
+
+config arch_msp430fr5994lp_256k_driver_stdin
+bool "UART Input"
+select meta_driver_stdin
+
+config arch_msp430fr5994lp_256k_driver_timer
+bool "Timer with Interrupts"
+select meta_driver_timer
+
+config arch_msp430fr5994lp_256k_driver_uptime
+bool "Uptime Counter"
+select meta_driver_uptime
diff --git a/src/arch/msp430fr5994lp-256k/prompt b/src/arch/msp430fr5994lp-256k/prompt
new file mode 100644
index 0000000..78b169e
--- /dev/null
+++ b/src/arch/msp430fr5994lp-256k/prompt
@@ -0,0 +1 @@
+MSP430FR5994 Launchpad (Large Memory Model)
diff --git a/src/arch/msp430fr5994lp/Kconfig b/src/arch/msp430fr5994lp/Kconfig
new file mode 100644
index 0000000..8831867
--- /dev/null
+++ b/src/arch/msp430fr5994lp/Kconfig
@@ -0,0 +1,31 @@
+config arch_msp430fr5994lp_driver_adc
+bool "ADC (Analog-Digital-Converter)"
+select meta_driver_adc
+
+config arch_msp430fr5994lp_driver_counter
+bool "Cycle Counter"
+select meta_driver_counter
+
+config arch_msp430fr5994lp_driver_i2c
+bool "I2C on eUSCI_B1"
+select meta_driver_i2c
+
+config arch_msp430fr5994lp_driver_spi_a1
+bool "SPI on eUSCI_A1"
+select meta_driver_spi
+
+config arch_msp430fr5994lp_driver_spi_b
+bool "SPI on eUSCI_B1"
+select meta_driver_spi
+
+config arch_msp430fr5994lp_driver_stdin
+bool "UART Input"
+select meta_driver_stdin
+
+config arch_msp430fr5994lp_driver_timer
+bool "Timer with Interrupts"
+select meta_driver_timer
+
+config arch_msp430fr5994lp_driver_uptime
+bool "Uptime Counter"
+select meta_driver_uptime
diff --git a/src/arch/msp430fr5994lp/Makefile.inc b/src/arch/msp430fr5994lp/Makefile.inc
index e9d666f..0d2df46 100644
--- a/src/arch/msp430fr5994lp/Makefile.inc
+++ b/src/arch/msp430fr5994lp/Makefile.inc
@@ -29,6 +29,8 @@ SIZE = /opt/msp430/ti/msp430-gcc-full-linux-5.1.2.0/bin/msp430-elf-size
 ARCH_SHORTNAME = msp430
 
 CXX_TARGETS += src/arch/msp430fr5994lp/arch.cc
+CXX_TARGETS += src/arch/msp430fr5994lp/driver/gpio.cc
+CXX_TARGETS += src/arch/msp430fr5994lp/driver/stdout.cc
 
 ifeq (${aspectc}, 1)
 	ifeq (${msp430_large}, )
@@ -38,40 +40,78 @@ ifeq (${aspectc}, 1)
 	endif
 endif
 
+# Command-line
+
 ifneq ($(findstring adc,${arch_drivers}), )
-	CXX_TARGETS += src/arch/msp430fr5994lp/driver/adc.cc
+	CONFIG_arch_msp430fr5994lp_driver_adc = y
 endif
 
-CXX_TARGETS += src/arch/msp430fr5994lp/driver/gpio.cc
-CXX_TARGETS += src/arch/msp430fr5994lp/driver/stdout.cc
-CXX_TARGETS += src/arch/msp430fr5994lp/driver/uptime.cc
-
 ifneq ($(findstring stdin,${arch_drivers}), )
-	CXX_TARGETS += src/arch/msp430fr5994lp/driver/stdin.cc
+	CONFIG_arch_msp430fr5994lp_driver_stdin = y
 endif
 
 ifneq ($(findstring softi2c,${drivers}), )
 else ifneq ($(findstring i2c,${arch_drivers}), )
+	CONFIG_arch_msp430fr5994lp_driver_i2c = y
+endif
+
+ifneq ($(findstring spi_a1,${arch_drivers}), )
+	CONFIG_arch_msp430fr5994lp_driver_spi_a1 = y
+endif
+
+ifneq ($(findstring spi_b,${arch_drivers}), )
+	CONFIG_arch_msp430fr5994lp_driver_spi_b = y
+endif
+
+ifneq ($(findstring timer,${arch_drivers}), )
+	CONFIG_arch_msp430fr5994lp_driver_timer = y
+endif
+
+ifneq ($(findstring counter,${arch_drivers}), )
+	CONFIG_arch_msp430fr5994lp_driver_counter = y
+endif
+
+ifeq (${timer_s}, 1)
+	CONFIG_arch_msp430fr5994lp_driver_uptime = y
+endif
+
+# Kconfig
+
+ifdef CONFIG_arch_msp430fr5994lp_driver_adc
+	CXX_TARGETS += src/arch/msp430fr5994lp/driver/adc.cc
+endif
+
+ifdef CONFIG_arch_msp430fr5994lp_driver_stdin
+	CXX_TARGETS += src/arch/msp430fr5994lp/driver/stdin.cc
+endif
+
+ifdef CONFIG_arch_msp430fr5994lp_driver_i2c
 	CXX_TARGETS += src/arch/msp430fr5994lp/driver/i2c.cc
 	COMMON_FLAGS += -DDRIVER_I2C
 endif
 
-ifneq ($(findstring spi_a1,${arch_drivers}), )
+ifdef CONFIG_arch_msp430fr5994lp_driver_spi_a1
 	CXX_TARGETS += src/arch/msp430fr5994lp/driver/spi_a1.cc
 endif
 
-ifneq ($(findstring spi_b,${arch_drivers}), )
+ifdef CONFIG_arch_msp430fr5994lp_driver_spi_b
 	CXX_TARGETS += src/arch/msp430fr5994lp/driver/spi_b.cc
 endif
 
-ifneq ($(findstring timer,${arch_drivers}), )
+ifdef CONFIG_arch_msp430fr5994lp_driver_timer
 	CXX_TARGETS += src/arch/msp430fr5994lp/driver/timer.cc
 endif
 
-ifneq ($(findstring counter,${arch_drivers}), )
+ifdef CONFIG_arch_msp430fr5994lp_driver_counter
 	CXX_TARGETS += src/arch/msp430fr5994lp/driver/counter.cc
 endif
 
+ifdef CONFIG_arch_msp430fr5994lp_driver_uptime
+	COMMON_FLAGS += -DTIMER_S
+	CXX_TARGETS += src/arch/msp430fr5994lp/driver/uptime.cc
+endif
+
+
 ifneq ($(findstring timed_resistive_load,${arch_drivers}), )
 	CXX_TARGETS += src/arch/msp430fr5994lp/driver/timed_resistive_load.cc
 	resistor1_pin ?= p3_0
diff --git a/src/arch/msp430fr5994lp/arch.cc b/src/arch/msp430fr5994lp/arch.cc
index de75fbb..e7d5ff5 100644
--- a/src/arch/msp430fr5994lp/arch.cc
+++ b/src/arch/msp430fr5994lp/arch.cc
@@ -89,12 +89,6 @@ void Arch::setup(void)
 	TA1CCR0 = 4096;
 	TA1CTL |= TACLR | TAIE;
 #endif
-
-#ifdef TIMER_CYCLES
-	TA2CTL = TASSEL__SMCLK | ID__1 | MC__CONTINUOUS;
-	TA2EX0 = 0;
-	TA2CTL |= TACLR;
-#endif
 }
 
 #ifdef WITH_WAKEUP
diff --git a/src/arch/msp430fr5994lp/driver/counter.cc b/src/arch/msp430fr5994lp/driver/counter.cc
index 98a2c4f..daa7a2d 100644
--- a/src/arch/msp430fr5994lp/driver/counter.cc
+++ b/src/arch/msp430fr5994lp/driver/counter.cc
@@ -1,9 +1,5 @@
 #include "driver/counter.h"
 
-#if defined(TIMER_CYCLES)
-#warn "timer_cycles and counter are mutually exclusive. Expect odd behaviour."
-#endif
-
 Counter counter;
 
 #ifndef __acweaving
diff --git a/src/arch/msp430fr5994lp/prompt b/src/arch/msp430fr5994lp/prompt
new file mode 100644
index 0000000..60b2621
--- /dev/null
+++ b/src/arch/msp430fr5994lp/prompt
@@ -0,0 +1 @@
+MSP430FR5994 Launchpad
diff --git a/src/arch/posix/Kconfig b/src/arch/posix/Kconfig
new file mode 100644
index 0000000..d88cbfc
--- /dev/null
+++ b/src/arch/posix/Kconfig
@@ -0,0 +1,10 @@
+config gpio_trace
+bool "Trace GPIO changes on stdout"
+
+config arch_posix_driver_counter
+bool "Cycle counter"
+select meta_driver_counter
+
+config arch_posix_driver_uptime
+bool "Uptime counter"
+select meta_driver_uptime
diff --git a/src/arch/posix/Makefile.inc b/src/arch/posix/Makefile.inc
index 7bf4ba0..22ddba9 100644
--- a/src/arch/posix/Makefile.inc
+++ b/src/arch/posix/Makefile.inc
@@ -13,17 +13,33 @@ ifeq (${aspectc}, 1)
 endif
 
 CXX_TARGETS += src/arch/posix/arch.cc src/arch/posix/driver/gpio.cc
-CXX_TARGETS += src/arch/posix/driver/stdout.cc src/arch/posix/driver/uptime.cc
+CXX_TARGETS += src/arch/posix/driver/stdout.cc
 
 ifneq ($(findstring counter,${arch_drivers}), )
+	CONFIG_arch_posix_driver_counter = y
+endif
+
+ifeq (${timer_s}, 1)
+	CONFIG_arch_arduino_nano_driver_uptime = y
+endif
+
+ifdef CONFIG_arch_posix_driver_counter
 	CXX_TARGETS += src/arch/posix/driver/counter.cc
 endif
 
+ifdef CONFIG_arch_arduino_nano_driver_uptime
+	COMMON_FLAGS += -DTIMER_S
+	CXX_TARGETS += src/arch/arduino-nano/driver/uptime.cc
+endif
+
 OBJECTS = ${CXX_TARGETS:.cc=.o} ${C_TARGETS:.c=.o}
 
 ifneq (${gpio_trace}, )
 	COMMON_FLAGS += -DGPIO_TRACE
 endif
+ifdef CONFIG_gpio_trace
+	COMMON_FLAGS += -DGPIO_TRACE
+endif
 
 .cc.o:
 	${QUIET}${CXX} ${INCLUDES} ${COMMON_FLAGS} ${CXXFLAGS} -c -o $@ ${@:.o=.cc}
diff --git a/src/arch/posix/prompt b/src/arch/posix/prompt
new file mode 100644
index 0000000..9615075
--- /dev/null
+++ b/src/arch/posix/prompt
@@ -0,0 +1 @@
+POSIX
diff --git a/src/arch/stm32f446re-nucleo/Kconfig b/src/arch/stm32f446re-nucleo/Kconfig
new file mode 100644
index 0000000..df64674
--- /dev/null
+++ b/src/arch/stm32f446re-nucleo/Kconfig
@@ -0,0 +1,11 @@
+config arch_stm32f446re_nucleo_driver_counter
+bool "Cycle Counter"
+select meta_driver_counter
+
+config arch_stm32f446re_nucleo_driver_timer
+bool "Timer with Interrupts"
+select meta_driver_timer
+
+config arch_stm32f446re_nucleo_driver_uptime
+bool "Uptime Counter"
+select meta_driver_uptime
diff --git a/src/arch/stm32f446re-nucleo/Makefile.inc b/src/arch/stm32f446re-nucleo/Makefile.inc
index 22115f7..554c7a8 100644
--- a/src/arch/stm32f446re-nucleo/Makefile.inc
+++ b/src/arch/stm32f446re-nucleo/Makefile.inc
@@ -27,34 +27,37 @@ endif
 
 CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/gpio.cc
 CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/stdout.cc
-CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/uptime.cc
 
-ifneq ($(findstring stdin,${arch_drivers}), )
-	CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/stdin.cc
+# Commandline
+
+ifneq ($(findstring counter,${arch_drivers}), )
+	CONFIG_arch_stm32f446re_nucleo_driver_counter = y
 endif
 
-ifneq ($(findstring softi2c,${drivers}), )
-else ifneq ($(findstring i2c,${arch_drivers}), )
-	CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/i2c.cc
-	COMMON_FLAGS += -DDRIVER_I2C
+ifneq ($(findstring timer,${arch_drivers}), )
+	CONFIG_arch_stm32f446re_nucleo_driver_timer = y
 endif
 
-ifneq ($(findstring spi_a1,${arch_drivers}), )
-	CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/spi_a1.cc
+ifeq (${timer_s}, 1)
+	CONFIG_arch_stm32f446re_nucleo_driver_uptime = y
 endif
 
-ifneq ($(findstring spi_b,${arch_drivers}), )
-	CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/spi_b.cc
+# Kconfig
+
+ifdef CONFIG_arch_stm32f446re_nucleo_driver_counter
+	CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/counter.cc
 endif
 
-ifneq ($(findstring timer,${arch_drivers}), )
+ifdef CONFIG_arch_stm32f446re_nucleo_driver_timer
 	CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/timer.cc
 endif
 
-ifneq ($(findstring counter,${arch_drivers}), )
-	CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/counter.cc
+ifdef CONFIG_arch_stm32f446re_nucleo_driver_uptime
+	COMMON_FLAGS += -DTIMER_S
+	CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/uptime.cc
 endif
 
+
 ifneq (${cpu_freq}, )
 	COMMON_FLAGS += -DF_CPU=${cpu_freq}UL
 else
diff --git a/src/arch/stm32f446re-nucleo/prompt b/src/arch/stm32f446re-nucleo/prompt
new file mode 100644
index 0000000..e81bb4b
--- /dev/null
+++ b/src/arch/stm32f446re-nucleo/prompt
@@ -0,0 +1 @@
+STM32F446RE Nucleo
diff --git a/src/driver/Kconfig b/src/driver/Kconfig
new file mode 100644
index 0000000..49bfbdd
--- /dev/null
+++ b/src/driver/Kconfig
@@ -0,0 +1,88 @@
+config meta_driver_adc
+bool
+config meta_driver_counter
+bool
+config meta_driver_i2c
+bool
+config meta_driver_neopixel
+bool
+config meta_driver_spi
+bool
+config meta_driver_stdin
+bool
+config meta_driver_timer
+bool
+
+menu "Drivers"
+
+config driver_am2320
+bool "AM2320 TH Sensor"
+depends on meta_driver_i2c
+
+config driver_bme280
+bool "BME280 TPH Sensor"
+depends on meta_driver_i2c
+
+config driver_bme680
+bool "BME680 TPH+IAQ Sensor"
+depends on meta_driver_i2c
+
+config driver_ccs811
+bool "CCS811 VOC Sensor"
+depends on meta_driver_i2c
+
+config driver_dummy
+bool "Dummy driver"
+
+config driver_eepom24lc64
+bool "24LC64 EEPROM"
+
+config driver_hcd1080
+bool "HDC1080 TH Sensor with Heated Plate"
+depends on meta_driver_i2c
+
+config driver_lm75
+bool "LM75 Temperature Sensor"
+depends on meta_driver_i2c
+# depends on I2C
+
+config driver_max44006
+bool "MAX44006 RGB Sensor"
+depends on meta_driver_i2c
+
+config driver_max44009
+bool "MAX44009 Ambient Light Sensor"
+depends on meta_driver_i2c
+
+config driver_mmsimple
+bool "MicroMoody simple"
+depends on meta_driver_i2c
+
+config driver_mmsubstate
+bool "MicroMoody with Sub-States"
+depends on meta_driver_i2c
+
+config driver_mpu9250
+bool "MPU9250 Accelerometer/Gyroscope/Magnetometer"
+depends on meta_driver_i2c
+
+config driver_nrf24l01
+bool "nRF24L01+ 2.4GHz Radio"
+depends on meta_driver_spi
+
+config driver_resistive_load
+bool "Resistive Load for Energy Model Generation Evaluation"
+
+config driver_s5851a
+bool "S5851A LoRaWAN Radio"
+
+config driver_sharp96
+bool "sharp LS013B4DN 96x96px Transflective LC Display"
+depends on meta_driver_spi
+
+config driver_soft_i2c
+bool "Software I2C"
+#depends on !driver_i2c
+select meta_driver_i2c
+
+endmenu
diff --git a/src/driver/soft_i2c.cc b/src/driver/soft_i2c.cc
index 285caef..b03b9e1 100644
--- a/src/driver/soft_i2c.cc
+++ b/src/driver/soft_i2c.cc
@@ -7,9 +7,6 @@
 #endif
 
 #ifdef SOFTI2C_TIMER
-#ifdef TIMER_CYCLES
-#error "SOFTI2C_TIMER and TIMER_CYCLES are mutually exclusive"
-#endif
 #include "driver/timer.h"
 volatile unsigned char timer_done = 0;
 #endif