diff --git a/hardware/arduino/sam/boards.txt b/hardware/arduino/sam/boards.txt
index 8eea01533..5696bebea 100644
--- a/hardware/arduino/sam/boards.txt
+++ b/hardware/arduino/sam/boards.txt
@@ -1,22 +1,5 @@
 
-arduino_due_x.name=Arduino Due Dev. Ed.
-arduino_due_x.upload.tool=bossac
-arduino_due_x.upload.protocol=sam-ba
-arduino_due_x.upload.maximum_size=524288
-arduino_due_x.upload.use_1200bps_touch=true
-arduino_due_x.upload.wait_for_upload_port=true
-arduino_due_x.upload.native_usb=true
-arduino_due_x.build.mcu=cortex-m3
-arduino_due_x.build.f_cpu=84000000L
-arduino_due_x.build.core=arduino
-arduino_due_x.build.extra_flags=-D__SAM3X8E__ -mthumb -DUSB_PID={build.pid} -DUSB_VID={build.vid} -DUSBCON
-arduino_due_x.build.ldscript=linker_scripts/gcc/flash.ld
-arduino_due_x.build.variant=arduino_due_x
-arduino_due_x.build.variant_system_lib=libsam_sam3x8e_gcc_rel.a
-arduino_due_x.build.vid=0x2341
-arduino_due_x.build.pid=0x003e
-
-arduino_due_x_dbg.name=Arduino Due Dev. Ed. (Debug port)
+arduino_due_x_dbg.name=Arduino Due Dev. Ed. (Programming port)
 arduino_due_x_dbg.upload.tool=bossac
 arduino_due_x_dbg.upload.protocol=sam-ba
 arduino_due_x_dbg.upload.maximum_size=524288
@@ -33,3 +16,20 @@ arduino_due_x_dbg.build.variant_system_lib=libsam_sam3x8e_gcc_rel.a
 arduino_due_x_dbg.build.vid=0x2341
 arduino_due_x_dbg.build.pid=0x003e
 
+arduino_due_x.name=Arduino Due Dev. Ed. (Native port)
+arduino_due_x.upload.tool=bossac
+arduino_due_x.upload.protocol=sam-ba
+arduino_due_x.upload.maximum_size=524288
+arduino_due_x.upload.use_1200bps_touch=true
+arduino_due_x.upload.wait_for_upload_port=true
+arduino_due_x.upload.native_usb=true
+arduino_due_x.build.mcu=cortex-m3
+arduino_due_x.build.f_cpu=84000000L
+arduino_due_x.build.core=arduino
+arduino_due_x.build.extra_flags=-D__SAM3X8E__ -mthumb -DUSB_PID={build.pid} -DUSB_VID={build.vid} -DUSBCON
+arduino_due_x.build.ldscript=linker_scripts/gcc/flash.ld
+arduino_due_x.build.variant=arduino_due_x
+arduino_due_x.build.variant_system_lib=libsam_sam3x8e_gcc_rel.a
+arduino_due_x.build.vid=0x2341
+arduino_due_x.build.pid=0x003e
+
diff --git a/hardware/arduino/sam/variants/adk2/build_gcc/Makefile b/hardware/arduino/sam/variants/adk2/build_gcc/Makefile
deleted file mode 100644
index 53e76cec3..000000000
--- a/hardware/arduino/sam/variants/adk2/build_gcc/Makefile
+++ /dev/null
@@ -1,42 +0,0 @@
-#
-#  Copyright (c) 2012 Google, Inc.  All right reserved.
-#
-#  This library is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU Lesser General Public
-#  License as published by the Free Software Foundation; either
-#  version 2.1 of the License, or (at your option) any later version.
-#
-#  This library is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-#  See the GNU Lesser General Public License for more details.
-#
-#  You should have received a copy of the GNU Lesser General Public
-#  License along with this library; if not, write to the Free Software
-#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-
-SUBMAKE_OPTIONS=--no-builtin-rules --no-builtin-variables --no-print-directory
-
-#-------------------------------------------------------------------------------
-# Rules
-#-------------------------------------------------------------------------------
-
-all: adk2
-
-.PHONY: adk2
-adk2:
-	@echo ------------------------------------------------------------------------------------
-	@echo --- Making variant adk2
-	@$(MAKE) DEBUG=1 $(SUBMAKE_OPTIONS) -f libvariant_adk2.mk
-#	@$(MAKE) $(SUBMAKE_OPTIONS) -f libvariant_adk2.mk
-	@echo ------------------------------------------------------------------------------------
-
-.PHONY: clean
-clean:
-	@echo ------------------------------------------------------------------------------------
-	@echo --- Cleaning variant adk2
-	@$(MAKE) DEBUG=1 $(SUBMAKE_OPTIONS) -f libvariant_adk2.mk $@
-#	@$(MAKE) $(SUBMAKE_OPTIONS) -f libvariant_adk2.mk $@
-	@echo ------------------------------------------------------------------------------------
-
diff --git a/hardware/arduino/sam/variants/adk2/build_gcc/debug.mk b/hardware/arduino/sam/variants/adk2/build_gcc/debug.mk
deleted file mode 100644
index d0716744a..000000000
--- a/hardware/arduino/sam/variants/adk2/build_gcc/debug.mk
+++ /dev/null
@@ -1,25 +0,0 @@
-#
-#  Copyright (c) 2011 Arduino.  All right reserved.
-#
-#  This library is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU Lesser General Public
-#  License as published by the Free Software Foundation; either
-#  version 2.1 of the License, or (at your option) any later version.
-#
-#  This library is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
-#  See the GNU Lesser General Public License for more details.
-#
-#  You should have received a copy of the GNU Lesser General Public
-#  License along with this library; if not, write to the Free Software
-#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-
-# Optimization level
-# -O1 Optimize
-# -O2 Optimize even more
-# -O3 Optimize yet more
-# -O0 Reduce compilation time and make debugging produce the expected results
-# -Os Optimize for size
-OPTIMIZATION = -g -O0 -DDEBUG
diff --git a/hardware/arduino/sam/variants/adk2/build_gcc/gcc.mk b/hardware/arduino/sam/variants/adk2/build_gcc/gcc.mk
deleted file mode 100644
index 32f35d264..000000000
--- a/hardware/arduino/sam/variants/adk2/build_gcc/gcc.mk
+++ /dev/null
@@ -1,82 +0,0 @@
-#
-#  Copyright (c) 2011 Arduino.  All right reserved.
-#
-#  This library is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU Lesser General Public
-#  License as published by the Free Software Foundation; either
-#  version 2.1 of the License, or (at your option) any later version.
-#
-#  This library is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-#  See the GNU Lesser General Public License for more details.
-#
-#  You should have received a copy of the GNU Lesser General Public
-#  License along with this library; if not, write to the Free Software
-#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-
-# Tool suffix when cross-compiling
-CROSS_COMPILE = $(ARM_GCC_TOOLCHAIN)/arm-none-eabi-
-
-# Compilation tools
-AR = $(CROSS_COMPILE)ar
-CC = $(CROSS_COMPILE)gcc
-CXX = $(CROSS_COMPILE)g++
-AS = $(CROSS_COMPILE)as
-NM = $(CROSS_COMPILE)nm
-ifeq ($(OS),Windows_NT)
-RM=cs-rm -Rf
-else
-RM=rm -Rf
-endif
-
-SEP=\\
-
-# ---------------------------------------------------------------------------------------
-# C Flags
-
-CFLAGS += -Wall -Wchar-subscripts -Wcomment -Wformat=2 -Wimplicit-int
-CFLAGS += -Werror-implicit-function-declaration -Wmain -Wparentheses
-CFLAGS += -Wsequence-point -Wreturn-type -Wswitch -Wtrigraphs -Wunused
-CFLAGS += -Wuninitialized -Wunknown-pragmas -Wfloat-equal -Wundef
-CFLAGS += -Wshadow -Wpointer-arith -Wbad-function-cast -Wwrite-strings
-CFLAGS += -Wsign-compare -Waggregate-return -Wstrict-prototypes
-CFLAGS += -Wmissing-prototypes -Wmissing-declarations
-CFLAGS += -Wformat -Wmissing-format-attribute -Wno-deprecated-declarations
-CFLAGS += -Wpacked -Wredundant-decls -Wnested-externs -Winline -Wlong-long
-CFLAGS += -Wunreachable-code
-CFLAGS += -Wcast-align
-#CFLAGS += -Wmissing-noreturn
-#CFLAGS += -Wconversion
-
-CFLAGS += --param max-inline-insns-single=500 -mcpu=cortex-m3 -mthumb -mlong-calls -ffunction-sections -fdata-sections -nostdlib -std=c99
-CFLAGS += $(OPTIMIZATION) $(INCLUDES) -D$(CHIP) -D$(VARIANT)
-
-# To reduce application size use only integer printf function.
-CFLAGS += -Dprintf=iprintf
-
-# ---------------------------------------------------------------------------------------
-# CPP Flags
-
-CPPFLAGS += -Wall -Wchar-subscripts -Wcomment -Wformat=2
-CPPFLAGS += -Wmain -Wparentheses -Wcast-align -Wunreachable-code
-CPPFLAGS += -Wsequence-point -Wreturn-type -Wswitch -Wtrigraphs -Wunused
-CPPFLAGS += -Wuninitialized -Wunknown-pragmas -Wfloat-equal -Wundef
-CPPFLAGS += -Wshadow -Wpointer-arith -Wwrite-strings
-CPPFLAGS += -Wsign-compare -Waggregate-return -Wmissing-declarations
-CPPFLAGS += -Wformat -Wmissing-format-attribute -Wno-deprecated-declarations
-CPPFLAGS += -Wpacked -Wredundant-decls -Winline -Wlong-long
-#CPPFLAGS += -Wmissing-noreturn
-#CPPFLAGS += -Wconversion
-
-CPPFLAGS += --param max-inline-insns-single=500 -mcpu=cortex-m3 -mthumb -mlong-calls -ffunction-sections -fdata-sections -fno-rtti -fno-exceptions -std=c++98
-CPPFLAGS += $(OPTIMIZATION) $(INCLUDES) -D$(CHIP)
-
-# To reduce application size use only integer printf function.
-CPPFLAGS += -Dprintf=iprintf
-
-# ---------------------------------------------------------------------------------------
-# ASM Flags
-
-ASFLAGS = -mcpu=cortex-m3 -mthumb -Wall -g $(OPTIMIZATION) $(INCLUDES)
diff --git a/hardware/arduino/sam/variants/adk2/build_gcc/libvariant_adk2.mk b/hardware/arduino/sam/variants/adk2/build_gcc/libvariant_adk2.mk
deleted file mode 100644
index 395cb82be..000000000
--- a/hardware/arduino/sam/variants/adk2/build_gcc/libvariant_adk2.mk
+++ /dev/null
@@ -1,183 +0,0 @@
-#
-#  Copyright (c) 2012 Google, Inc.  All right reserved.
-#
-#  This library is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU Lesser General Public
-#  License as published by the Free Software Foundation; either
-#  version 2.1 of the License, or (at your option) any later version.
-#
-#  This library is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-#  See the GNU Lesser General Public License for more details.
-#
-#  You should have received a copy of the GNU Lesser General Public
-#  License along with this library; if not, write to the Free Software
-#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-
-# Makefile for compiling libArduino
-.SUFFIXES: .o .a .c .s
-
-CHIP=__SAM3X8E__
-VARIANT=adk2
-LIBNAME=libvariant_$(VARIANT)
-TOOLCHAIN=gcc
-
-#-------------------------------------------------------------------------------
-# Path
-#-------------------------------------------------------------------------------
-
-# Output directories
-OUTPUT_BIN = ../../../../../arduino/sam/cores/sam
-
-# Libraries
-PROJECT_BASE_PATH = ..
-SYSTEM_PATH = ../../../../../arduino/sam/system
-CMSIS_ROOT_PATH = $(SYSTEM_PATH)/CMSIS
-CMSIS_ARM_PATH=$(CMSIS_ROOT_PATH)/CMSIS/Include
-CMSIS_ATMEL_PATH=$(CMSIS_ROOT_PATH)/Device/ATMEL
-#CMSIS_CHIP_PATH=$(CMSIS_ROOT_PATH)/Device/ATMEL/$(CHIP_SERIE)
-
-ARDUINO_PATH = ../../../../../arduino/sam/cores/sam
-VARIANT_BASE_PATH = ../../../variants
-VARIANT_PATH = ../../../variants/$(VARIANT)
-
-#-------------------------------------------------------------------------------
-# Files
-#-------------------------------------------------------------------------------
-
-#vpath %.h $(PROJECT_BASE_PATH) $(SYSTEM_PATH) $(VARIANT_PATH)
-vpath %.cpp $(PROJECT_BASE_PATH)
-
-VPATH+=$(PROJECT_BASE_PATH)
-
-INCLUDES =
-#INCLUDES += -I$(PROJECT_BASE_PATH)
-INCLUDES += -I$(ARDUINO_PATH)
-INCLUDES += -I$(ARDUINO_PATH)/USB
-INCLUDES += -I$(SYSTEM_PATH)
-INCLUDES += -I$(SYSTEM_PATH)/libsam
-INCLUDES += -I$(VARIANT_BASE_PATH)
-INCLUDES += -I$(VARIANT_PATH)
-INCLUDES += -I$(CMSIS_ARM_PATH)
-INCLUDES += -I$(CMSIS_ATMEL_PATH)
-
-#-------------------------------------------------------------------------------
-ifdef DEBUG
-include debug.mk
-else
-include release.mk
-endif
-
-#-------------------------------------------------------------------------------
-# Tools
-#-------------------------------------------------------------------------------
-
-include $(TOOLCHAIN).mk
-
-#-------------------------------------------------------------------------------
-ifdef DEBUG
-OUTPUT_OBJ=debug
-OUTPUT_LIB_POSTFIX=dbg
-else
-OUTPUT_OBJ=release
-OUTPUT_LIB_POSTFIX=rel
-endif
-
-OUTPUT_LIB=$(LIBNAME)_$(TOOLCHAIN)_$(OUTPUT_LIB_POSTFIX).a
-OUTPUT_PATH=$(OUTPUT_OBJ)_$(VARIANT)
-
-#-------------------------------------------------------------------------------
-# C source files and objects
-#-------------------------------------------------------------------------------
-C_SRC=$(wildcard $(PROJECT_BASE_PATH)/*.c)
-
-C_OBJ_TEMP = $(patsubst %.c, %.o, $(notdir $(C_SRC)))
-
-# during development, remove some files
-C_OBJ_FILTER=
-
-C_OBJ=$(filter-out $(C_OBJ_FILTER), $(C_OBJ_TEMP))
-
-#-------------------------------------------------------------------------------
-# CPP source files and objects
-#-------------------------------------------------------------------------------
-CPP_SRC=$(wildcard $(PROJECT_BASE_PATH)/*.cpp)
-
-CPP_OBJ_TEMP = $(patsubst %.cpp, %.o, $(notdir $(CPP_SRC)))
-
-# during development, remove some files
-CPP_OBJ_FILTER=
-
-CPP_OBJ=$(filter-out $(CPP_OBJ_FILTER), $(CPP_OBJ_TEMP))
-
-#-------------------------------------------------------------------------------
-# Assembler source files and objects
-#-------------------------------------------------------------------------------
-A_SRC=$(wildcard $(PROJECT_BASE_PATH)/*.s)
-
-A_OBJ_TEMP=$(patsubst %.s, %.o, $(notdir $(A_SRC)))
-
-# during development, remove some files
-A_OBJ_FILTER=
-
-A_OBJ=$(filter-out $(A_OBJ_FILTER), $(A_OBJ_TEMP))
-
-#-------------------------------------------------------------------------------
-# Rules
-#-------------------------------------------------------------------------------
-all: $(VARIANT)
-
-$(VARIANT): create_output $(OUTPUT_LIB)
-
-.PHONY: create_output
-create_output:
-	@echo ------------------------------------------------------------------------------------
-	@echo -------------------------
-	@echo --- Preparing variant $(VARIANT) files in $(OUTPUT_PATH) $(OUTPUT_BIN)
-	@echo -------------------------
-#	@echo *$(INCLUDES)
-#	@echo -------------------------
-#	@echo *$(C_SRC)
-#	@echo -------------------------
-#	@echo *$(C_OBJ)
-#	@echo -------------------------
-#	@echo *$(addprefix $(OUTPUT_PATH)/, $(C_OBJ))
-#	@echo -------------------------
-#	@echo *$(CPP_SRC)
-#	@echo -------------------------
-#	@echo *$(CPP_OBJ)
-#	@echo -------------------------
-#	@echo *$(addprefix $(OUTPUT_PATH)/, $(CPP_OBJ))
-#	@echo -------------------------
-#	@echo *$(A_SRC)
-#	@echo -------------------------
-
-	-@mkdir $(OUTPUT_PATH) 1>NUL 2>&1
-	@echo ------------------------------------------------------------------------------------
-
-$(addprefix $(OUTPUT_PATH)/,$(C_OBJ)): $(OUTPUT_PATH)/%.o: %.c
-#	@"$(CC)" -v -c $(CFLAGS) $< -o $@
-	@"$(CC)" -c $(CFLAGS) $< -o $@
-
-$(addprefix $(OUTPUT_PATH)/,$(CPP_OBJ)): $(OUTPUT_PATH)/%.o: %.cpp
-#	@"$(CC)" -c $(CPPFLAGS) $< -o $@
-	@"$(CC)" -xc++ -c $(CPPFLAGS) $< -o $@
-
-$(addprefix $(OUTPUT_PATH)/,$(A_OBJ)): $(OUTPUT_PATH)/%.o: %.s
-	@"$(AS)" -c $(ASFLAGS) $< -o $@
-
-$(OUTPUT_LIB): $(addprefix $(OUTPUT_PATH)/, $(C_OBJ)) $(addprefix $(OUTPUT_PATH)/, $(CPP_OBJ)) $(addprefix $(OUTPUT_PATH)/, $(A_OBJ))
-	@"$(AR)" -v -r "$(OUTPUT_BIN)/$@" $^
-	@"$(NM)" "$(OUTPUT_BIN)/$@" > "$(OUTPUT_BIN)/$@.txt"
-
-
-.PHONY: clean
-clean:
-	@echo ------------------------------------------------------------------------------------
-	@echo --- Cleaning $(VARIANT) files [$(OUTPUT_PATH)$(SEP)*.o]
-	-@$(RM) $(OUTPUT_PATH) 1>NUL 2>&1
-	-@$(RM) $(OUTPUT_BIN)/$(OUTPUT_LIB) 1>NUL 2>&1
-	@echo ------------------------------------------------------------------------------------
-
diff --git a/hardware/arduino/sam/variants/adk2/build_gcc/release.mk b/hardware/arduino/sam/variants/adk2/build_gcc/release.mk
deleted file mode 100644
index 0d15157f4..000000000
--- a/hardware/arduino/sam/variants/adk2/build_gcc/release.mk
+++ /dev/null
@@ -1,25 +0,0 @@
-#
-#  Copyright (c) 2011 Arduino.  All right reserved.
-#
-#  This library is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU Lesser General Public
-#  License as published by the Free Software Foundation; either
-#  version 2.1 of the License, or (at your option) any later version.
-#
-#  This library is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
-#  See the GNU Lesser General Public License for more details.
-#
-#  You should have received a copy of the GNU Lesser General Public
-#  License along with this library; if not, write to the Free Software
-#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-
-# Optimization level
-# -O1 Optimize
-# -O2 Optimize even more
-# -O3 Optimize yet more
-# -O0 Reduce compilation time and make debugging produce the expected results
-# -Os Optimize for size
-OPTIMIZATION = -Os
diff --git a/hardware/arduino/sam/variants/adk2/debug_scripts/gcc/adk2_flash.gdb b/hardware/arduino/sam/variants/adk2/debug_scripts/gcc/adk2_flash.gdb
deleted file mode 100644
index c912752bc..000000000
--- a/hardware/arduino/sam/variants/adk2/debug_scripts/gcc/adk2_flash.gdb
+++ /dev/null
@@ -1,31 +0,0 @@
-#*******************************************************
-#
-#  Connect to J-Link and debug application in flash.
-#
-
-# define 'reset' command
-define reset
-
-# Connect to the J-Link gdb server
-target remote localhost:2331
-# Reset the chip to get to a known state
-monitor reset
-
-# Select flash device
-monitor flash device = AT91SAM3U4E
-# Enable flash download and flash breakpoints
-monitor flash download = 1
-# Load the program
-load
-
-# Reset peripheral  (RSTC_CR)
-set *0x400e1200 = 0xA5000004
-
-# Initializing PC and stack pointer
-mon reg sp=(0x80000)
-set *0x80004 = *0x80004 & 0xFFFFFFFE
-mon reg pc=(0x80004)
-info reg
-
-# end of 'reset' command
-end
diff --git a/hardware/arduino/sam/variants/adk2/debug_scripts/gcc/adk2_sram.gdb b/hardware/arduino/sam/variants/adk2/debug_scripts/gcc/adk2_sram.gdb
deleted file mode 100644
index c7cc015ba..000000000
--- a/hardware/arduino/sam/variants/adk2/debug_scripts/gcc/adk2_sram.gdb
+++ /dev/null
@@ -1,23 +0,0 @@
-#*************************************************
-#
-#  Connect to J-Link and debug application in sram on SAM3U
-#
-# Note:
-#     First,users should do Step1 and Step2 according to your project,
-#     then do Step3.
-
-# Step1: Connect to the J-Link gdb server
-#target remote localhost:2331
-#mon reset
-
-# Step2: Load file(eg. getting-started project)
-#load bin/basic-dhrystone-project-at91sam3u-ek-at91sam3u4-sram.elf
-#symbol-file bin/basic-dhrystone-project-at91sam3u-ek-at91sam3u4-sram.elf
-
-# Step3: Initializing PC and stack pointer
-# Perpheral reset RSTC_CR
-set *0x400e1200 = 0xA5000004
-# Modify pc value to even before writing pc register
-mon reg sp=(0x20000000)
-set *0x20000004 = *0x20000004 & 0xFFFFFFFE
-mon reg pc=(0x20000004)
diff --git a/hardware/arduino/sam/variants/adk2/libsam_sam3x8e_gcc_rel.a b/hardware/arduino/sam/variants/adk2/libsam_sam3x8e_gcc_rel.a
deleted file mode 100644
index 00960209f..000000000
Binary files a/hardware/arduino/sam/variants/adk2/libsam_sam3x8e_gcc_rel.a and /dev/null differ
diff --git a/hardware/arduino/sam/variants/adk2/libsam_sam3x8e_gcc_rel.a.txt b/hardware/arduino/sam/variants/adk2/libsam_sam3x8e_gcc_rel.a.txt
deleted file mode 100644
index 7447be8ba..000000000
--- a/hardware/arduino/sam/variants/adk2/libsam_sam3x8e_gcc_rel.a.txt
+++ /dev/null
@@ -1,381 +0,0 @@
-
-adc10_sam3u.o:
-
-adc12_sam3u.o:
-
-adc_sam3snxa.o:
-
-pio.o:
-00000000 T PIO_Clear
-00000000 T PIO_Configure
-00000000 T PIO_DisableInterrupt
-00000000 T PIO_Get
-00000000 T PIO_GetOutputDataStatus
-00000000 T PIO_PullUp
-00000000 T PIO_Set
-00000000 T PIO_SetDebounceFilter
-00000000 T PIO_SetInput
-00000000 T PIO_SetOutput
-00000000 T PIO_SetPeripheral
-
-pmc.o:
-00000000 T pmc_clr_fast_startup_input
-00000000 T pmc_disable_all_pck
-00000000 T pmc_disable_all_periph_clk
-00000000 T pmc_disable_interrupt
-00000000 T pmc_disable_pck
-00000000 T pmc_disable_periph_clk
-00000000 T pmc_disable_pllack
-00000000 T pmc_disable_udpck
-00000000 T pmc_disable_upll_clock
-00000000 T pmc_enable_all_pck
-00000000 T pmc_enable_all_periph_clk
-00000000 T pmc_enable_backupmode
-00000000 T pmc_enable_interrupt
-00000000 T pmc_enable_pck
-00000000 T pmc_enable_periph_clk
-00000000 T pmc_enable_pllack
-00000000 T pmc_enable_sleepmode
-00000000 T pmc_enable_udpck
-00000000 T pmc_enable_upll_clock
-00000000 T pmc_enable_waitmode
-00000000 T pmc_get_interrupt_mask
-00000000 T pmc_get_status
-00000000 T pmc_get_writeprotect_status
-00000000 T pmc_is_locked_pllack
-00000000 T pmc_is_locked_upll
-00000000 T pmc_is_pck_enabled
-00000000 T pmc_is_periph_clk_enabled
-00000000 T pmc_mck_set_prescaler
-00000000 T pmc_mck_set_source
-00000000 T pmc_osc_disable_fastrc
-00000000 T pmc_osc_disable_xtal
-00000000 T pmc_osc_enable_fastrc
-00000000 T pmc_osc_is_ready_32kxtal
-00000000 T pmc_osc_is_ready_mainck
-00000000 T pmc_pck_set_prescaler
-00000000 T pmc_pck_set_source
-00000000 T pmc_set_fast_startup_input
-00000000 T pmc_set_writeprotect
-00000000 T pmc_switch_mainck_to_fastrc
-00000000 T pmc_switch_mainck_to_xtal
-00000000 T pmc_switch_mck_to_mainck
-00000000 T pmc_switch_mck_to_pllack
-00000000 T pmc_switch_mck_to_sclk
-00000000 T pmc_switch_mck_to_upllck
-00000000 T pmc_switch_pck_to_mainck
-00000000 T pmc_switch_pck_to_pllack
-00000000 T pmc_switch_pck_to_sclk
-00000000 T pmc_switch_pck_to_upllck
-00000000 T pmc_switch_sclk_to_32kxtal
-00000000 T pmc_switch_udpck_to_pllack
-00000000 T pmc_switch_udpck_to_upllck
-
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-00000000 t FindClockConfiguration
-00000000 T PWMC_ConfigureChannel
-00000000 T PWMC_ConfigureChannelExt
-00000000 T PWMC_ConfigureClocks
-00000000 T PWMC_ConfigureComparisonUnit
-00000000 T PWMC_ConfigureEventLineMode
-00000000 T PWMC_ConfigureSyncChannel
-00000000 T PWMC_DisableChannel
-00000000 T PWMC_DisableChannelIt
-00000000 T PWMC_DisableIt
-00000000 T PWMC_DisableOverrideOutput
-00000000 T PWMC_EnableChannel
-00000000 T PWMC_EnableChannelIt
-00000000 T PWMC_EnableFaultProtection
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-00000000 T PWMC_EnableOverrideOutput
-00000000 T PWMC_FaultClear
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-00000000 T PWMC_SetDutyCycle
-00000000 T PWMC_SetFaultMode
-00000000 T PWMC_SetFaultProtectionValue
-00000000 T PWMC_SetOverrideValue
-00000000 T PWMC_SetPeriod
-00000000 T PWMC_SetSyncChannelUpdatePeriod
-00000000 T PWMC_SetSyncChannelUpdateUnlock
-00000000 T PWMC_WriteBuffer
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-00000000 r __func__.3203
-00000000 r __func__.3218
-00000000 r __func__.3229
-00000000 r __func__.3240
-00000000 r __func__.3247
-00000000 r __func__.3331
-00000000 r __func__.3337
-
-rtc.o:
-00000000 T RTC_ClearSCCR
-00000000 T RTC_DisableIt
-00000000 T RTC_EnableIt
-00000000 T RTC_GetDate
-00000000 T RTC_GetHourMode
-00000000 T RTC_GetSR
-00000000 T RTC_GetTime
-00000000 T RTC_SetDate
-00000000 T RTC_SetDateAlarm
-00000000 T RTC_SetHourMode
-00000000 T RTC_SetTime
-00000000 T RTC_SetTimeAlarm
-         U __assert_func
-00000000 r __func__.3189
-00000000 r __func__.3198
-00000000 r __func__.3203
-
-rtt.o:
-00000000 T RTT_EnableIT
-00000000 T RTT_GetStatus
-00000000 T RTT_GetTime
-00000000 T RTT_SetAlarm
-00000000 T RTT_SetPrescaler
-         U __assert_func
-00000000 r __func__.3196
-00000000 r __func__.3204
-
-spi.o:
-00000000 T SPI_Configure
-00000000 T SPI_ConfigureNPCS
-00000000 T SPI_Disable
-00000000 T SPI_DisableIt
-00000000 T SPI_Enable
-00000000 T SPI_EnableIt
-00000000 T SPI_GetStatus
-00000000 T SPI_IsFinished
-00000000 T SPI_Read
-00000000 T SPI_Write
-         U pmc_enable_periph_clk
-
-tc.o:
-00000000 T TC_Configure
-00000000 T TC_FindMckDivisor
-00000000 T TC_Start
-00000000 T TC_Stop
-         U __assert_func
-00000000 r __func__.3191
-00000000 r __func__.3197
-00000000 r __func__.3203
-
-timetick.o:
-00000000 T GetTickCount
-00000000 T Sleep
-00000000 T TimeTick_Configure
-00000000 T TimeTick_Increment
-00000000 T Wait
-00000000 b _dwTickCount
-
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-00000000 T TWI_ByteReceived
-00000000 T TWI_ByteSent
-00000000 T TWI_ConfigureMaster
-00000000 T TWI_ConfigureSlave
-00000000 T TWI_DisableIt
-00000000 T TWI_EnableIt
-00000000 T TWI_GetMaskedStatus
-00000000 T TWI_GetStatus
-00000000 T TWI_ReadByte
-00000000 T TWI_SendSTOPCondition
-00000000 T TWI_StartRead
-00000000 T TWI_StartWrite
-00000000 T TWI_Stop
-00000000 T TWI_TransferComplete
-00000000 T TWI_WriteByte
-         U __assert_func
-00000000 r __func__.3556
-00000000 r __func__.3571
-00000000 r __func__.3575
-00000000 r __func__.3582
-00000000 r __func__.3586
-00000000 r __func__.3591
-00000000 r __func__.3599
-00000000 r __func__.3613
-00000000 r __func__.3618
-00000000 r __func__.3622
-00000000 r __func__.3627
-00000000 r __func__.3631
-
-usart.o:
-00000000 T USART_Configure
-00000000 T USART_DisableIt
-00000000 T USART_EnableIt
-00000000 T USART_GetChar
-00000000 T USART_GetStatus
-00000000 T USART_IsDataAvailable
-00000000 T USART_IsRxReady
-00000000 T USART_PutChar
-00000000 T USART_Read
-00000000 T USART_ReadBuffer
-00000000 T USART_SetIrdaFilter
-00000000 T USART_SetReceiverEnabled
-00000000 T USART_SetTransmitterEnabled
-00000000 T USART_Write
-00000000 T USART_WriteBuffer
-         U __assert_func
-00000000 r __func__.3477
-
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-00000000 T WDT_Disable
-00000000 T WDT_Enable
-00000000 T WDT_GetPeriod
-00000000 T WDT_GetStatus
-00000000 T WDT_Restart
-
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-00000000 D SystemCoreClock
-00000000 T SystemCoreClockUpdate
-00000000 T SystemInit
-00000000 T system_init_flash
-
-startup_sam3xa.o:
-00000000 W ADC_Handler
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-00000000 W CAN0_Handler
-00000000 W CAN1_Handler
-00000000 W DACC_Handler
-00000000 W DMAC_Handler
-00000000 W DebugMon_Handler
-00000000 T Dummy_Handler
-00000000 W EFC0_Handler
-00000000 W EFC1_Handler
-00000000 W EMAC_Handler
-00000000 W HSMCI_Handler
-00000000 W HardFault_Handler
-00000000 W MemManage_Handler
-00000000 W NMI_Handler
-00000000 W PIOA_Handler
-00000000 W PIOB_Handler
-00000000 W PIOC_Handler
-00000000 W PIOD_Handler
-00000000 W PMC_Handler
-00000000 W PWM_Handler
-00000000 W PendSV_Handler
-00000000 W RSTC_Handler
-00000000 W RTC_Handler
-00000000 W RTT_Handler
-00000000 T Reset_Handler
-00000000 W SMC_Handler
-00000000 W SPI0_Handler
-00000000 W SSC_Handler
-00000000 W SUPC_Handler
-00000000 W SVC_Handler
-00000000 W SysTick_Handler
-00000000 W TC0_Handler
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-00000000 W TC2_Handler
-00000000 W TC3_Handler
-00000000 W TC4_Handler
-00000000 W TC5_Handler
-00000000 W TC6_Handler
-00000000 W TC7_Handler
-00000000 W TC8_Handler
-00000000 W TRNG_Handler
-00000000 W TWI0_Handler
-00000000 W TWI1_Handler
-00000000 W UART_Handler
-00000000 W UOTGHS_Handler
-00000000 W USART0_Handler
-00000000 W USART1_Handler
-00000000 W USART2_Handler
-00000000 W USART3_Handler
-00000000 W UsageFault_Handler
-00000000 W WDT_Handler
-         U __libc_init_array
-         U _erelocate
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-         U _szero
-00000000 R exception_table
-         U main
-
-adc.o:
-00000000 T adc_configure_power_save
-00000000 T adc_configure_sequence
-00000000 T adc_configure_timing
-00000000 T adc_configure_trigger
-00000000 T adc_disable_all_channel
-00000000 T adc_disable_anch
-00000000 T adc_disable_channel
-00000000 T adc_disable_channel_differential_input
-00000000 T adc_disable_channel_input_offset
-00000000 T adc_disable_interrupt
-00000000 T adc_disable_tag
-00000000 T adc_disable_ts
-00000000 T adc_enable_all_channel
-00000000 T adc_enable_anch
-00000000 T adc_enable_channel
-00000000 T adc_enable_channel_differential_input
-00000000 T adc_enable_channel_input_offset
-00000000 T adc_enable_interrupt
-00000000 T adc_enable_tag
-00000000 T adc_enable_ts
-00000000 T adc_get_actual_adc_clock
-00000000 T adc_get_channel_status
-00000000 T adc_get_channel_value
-00000000 T adc_get_comparison_mode
-00000000 T adc_get_interrupt_mask
-00000000 T adc_get_latest_value
-00000000 T adc_get_overrun_status
-00000000 T adc_get_pdc_base
-00000000 T adc_get_status
-00000000 T adc_get_tag
-00000000 T adc_get_writeprotect_status
-00000000 T adc_init
-00000000 T adc_set_bias_current
-00000000 T adc_set_channel_input_gain
-00000000 T adc_set_comparison_channel
-00000000 T adc_set_comparison_mode
-00000000 T adc_set_comparison_window
-00000000 T adc_set_resolution
-00000000 T adc_set_writeprotect
-00000000 T adc_start
-00000000 T adc_start_sequencer
-00000000 T adc_stop
-00000000 T adc_stop_sequencer
-
-udp.o:
-
-udphs.o:
-
-uotghs.o:
-00000000 T UDD_Attach
-00000000 T UDD_ClearIN
-00000000 T UDD_ClearOUT
-00000000 T UDD_ClearSetupInt
-00000000 T UDD_Detach
-00000000 T UDD_FifoByteCount
-00000000 T UDD_GetFrameNumber
-00000000 T UDD_Init
-00000000 T UDD_InitEP
-00000000 T UDD_InitEndpoints
-00000000 T UDD_ReadWriteAllowed
-00000000 T UDD_ReceivedSetupInt
-00000000 T UDD_Recv
-00000000 T UDD_Recv8
-00000000 T UDD_ReleaseRX
-00000000 T UDD_ReleaseTX
-00000000 T UDD_Send
-00000000 T UDD_Send8
-00000000 T UDD_SetAddress
-00000000 T UDD_SetStack
-00000000 T UDD_Stall
-00000000 T UDD_WaitForINOrOUT
-00000000 T UDD_WaitIN
-00000000 T UDD_WaitOUT
-00000000 T UOTGHS_Handler
-         U g_interrupt_enabled
-00000000 b gpf_isr
-         U pmc_enable_periph_clk
-         U pmc_enable_udpck
-         U pmc_enable_upll_clock
-         U pmc_switch_udpck_to_upllck
-00000000 b ul_recv_fifo_ptr
-00000000 b ul_send_fifo_ptr
-
-interrupt_sam_nvic.o:
-00000000 D g_interrupt_enabled
diff --git a/hardware/arduino/sam/variants/adk2/linker_scripts/gcc/flash.ld b/hardware/arduino/sam/variants/adk2/linker_scripts/gcc/flash.ld
deleted file mode 100644
index 8d652b606..000000000
--- a/hardware/arduino/sam/variants/adk2/linker_scripts/gcc/flash.ld
+++ /dev/null
@@ -1,144 +0,0 @@
-/* ----------------------------------------------------------------------------
- *         SAM Software Package License
- * ----------------------------------------------------------------------------
- * Copyright (c) 2012, Atmel Corporation
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following condition is met:
- *
- * - Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the disclaimer below.
- *
- * Atmel's name may not be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * ----------------------------------------------------------------------------
- */
-
-OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
-OUTPUT_ARCH(arm)
-SEARCH_DIR(.)
-
-/* Memory Spaces Definitions */
-MEMORY
-{
-	rom (rx)    : ORIGIN = 0x00080000, LENGTH = 0x00080000 /* Flash, 512K */
-	sram0 (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00010000 /* sram0, 64K */
-	sram1 (rwx) : ORIGIN = 0x20080000, LENGTH = 0x00008000 /* sram1, 32K */
-	ram (rwx)   : ORIGIN = 0x20070000, LENGTH = 0x00018000 /* sram, 96K */
-}
-
-/* The stack size used by the application. NOTE: you need to adjust  */
-STACK_SIZE = DEFINED(STACK_SIZE) ? STACK_SIZE : 0x2000 ;
-
-/* Section Definitions */
-SECTIONS
-{
-    .text :
-    {
-        . = ALIGN(4);
-        _sfixed = .;
-        KEEP(*(.vectors .vectors.*))
-        *(.text .text.* .gnu.linkonce.t.*)
-        *(.glue_7t) *(.glue_7)
-        *(.rodata .rodata* .gnu.linkonce.r.*)
-        *(.ARM.extab* .gnu.linkonce.armextab.*)
-
-        /* Support C constructors, and C destructors in both user code
-           and the C library. This also provides support for C++ code. */
-        . = ALIGN(4);
-        KEEP(*(.init))
-        . = ALIGN(4);
-        __preinit_array_start = .;
-        KEEP (*(.preinit_array))
-        __preinit_array_end = .;
-
-        . = ALIGN(4);
-        __init_array_start = .;
-        KEEP (*(SORT(.init_array.*)))
-        KEEP (*(.init_array))
-        __init_array_end = .;
-
-        . = ALIGN(0x4);
-        KEEP (*crtbegin.o(.ctors))
-        KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
-        KEEP (*(SORT(.ctors.*)))
-        KEEP (*crtend.o(.ctors))
-
-        . = ALIGN(4);
-        KEEP(*(.fini))
-
-        . = ALIGN(4);
-        __fini_array_start = .;
-        KEEP (*(.fini_array))
-        KEEP (*(SORT(.fini_array.*)))
-        __fini_array_end = .;
-
-        KEEP (*crtbegin.o(.dtors))
-        KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
-        KEEP (*(SORT(.dtors.*)))
-        KEEP (*crtend.o(.dtors))
-
-        . = ALIGN(4);
-        _efixed = .;            /* End of text section */
-    } > rom
-
-    /* .ARM.exidx is sorted, so has to go in its own output section.  */
-    PROVIDE_HIDDEN (__exidx_start = .);
-    .ARM.exidx :
-    {
-      *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-    } > rom
-    PROVIDE_HIDDEN (__exidx_end = .);
-
-    . = ALIGN(4);
-    _etext = .;
-
-    .relocate : AT (_etext)
-    {
-        . = ALIGN(4);
-        _srelocate = .;
-        *(.ramfunc .ramfunc.*);
-        *(.data .data.*);
-        . = ALIGN(4);
-        _erelocate = .;
-    } > ram
-
-    /* .bss section which is used for uninitialized data */
-    .bss (NOLOAD) :
-    {
-        . = ALIGN(4);
-        _sbss = . ;
-        _szero = .;
-        *(.bss .bss.*)
-        *(COMMON)
-        . = ALIGN(4);
-        _ebss = . ;
-        _ezero = .;
-    } > ram
-
-    /* stack section */
-    .stack (NOLOAD):
-    {
-        . = ALIGN(8);
-        _sstack = .;
-        . = . + STACK_SIZE;
-        . = ALIGN(8);
-        _estack = .;
-    } > ram
-
-    . = ALIGN(4);
-    _end = . ;
-}
diff --git a/hardware/arduino/sam/variants/adk2/linker_scripts/gcc/sram.ld b/hardware/arduino/sam/variants/adk2/linker_scripts/gcc/sram.ld
deleted file mode 100644
index 2a0d54e17..000000000
--- a/hardware/arduino/sam/variants/adk2/linker_scripts/gcc/sram.ld
+++ /dev/null
@@ -1,145 +0,0 @@
-/* ----------------------------------------------------------------------------
- *         SAM Software Package License
- * ----------------------------------------------------------------------------
- * Copyright (c) 2012, Atmel Corporation
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following condition is met:
- *
- * - Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the disclaimer below.
- *
- * Atmel's name may not be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * ----------------------------------------------------------------------------
- */
-
-OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
-OUTPUT_ARCH(arm)
-SEARCH_DIR(.)
-
-/* Memory Spaces Definitions */
-MEMORY
-{
-	rom (rx)    : ORIGIN = 0x00080000, LENGTH = 0x00080000 /* Flash, 512K */
-	sram0 (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00010000 /* sram0, 64K */
-	sram1 (rwx) : ORIGIN = 0x20080000, LENGTH = 0x00008000 /* sram1, 32K */
-	ram (rwx)   : ORIGIN = 0x20070000, LENGTH = 0x00018000 /* sram, 96K */
-}
-
-/* The stack size used by the application. NOTE: you need to adjust  */
-STACK_SIZE = DEFINED(STACK_SIZE) ? STACK_SIZE : 0x2000 ;
-
-/* Section Definitions */
-SECTIONS
-{
-    .text :
-    {
-        . = ALIGN(4);
-        _sfixed = .;
-        KEEP(*(.vectors .vectors.*))
-        *(.text .text.* .gnu.linkonce.t.*)
-        *(.glue_7t) *(.glue_7)
-        *(.rodata .rodata* .gnu.linkonce.r.*)
-        *(.ARM.extab* .gnu.linkonce.armextab.*)
-
-        /* Support C constructors, and C destructors in both user code
-           and the C library. This also provides support for C++ code. */
-        . = ALIGN(4);
-        KEEP(*(.init))
-        . = ALIGN(4);
-        __preinit_array_start = .;
-        KEEP (*(.preinit_array))
-        __preinit_array_end = .;
-
-        . = ALIGN(4);
-        __init_array_start = .;
-        KEEP (*(SORT(.init_array.*)))
-        KEEP (*(.init_array))
-        __init_array_end = .;
-
-        . = ALIGN(0x4);
-        KEEP (*crtbegin.o(.ctors))
-        KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
-        KEEP (*(SORT(.ctors.*)))
-        KEEP (*crtend.o(.ctors))
-
-        . = ALIGN(4);
-        KEEP(*(.fini))
-
-        . = ALIGN(4);
-        __fini_array_start = .;
-        KEEP (*(.fini_array))
-        KEEP (*(SORT(.fini_array.*)))
-        __fini_array_end = .;
-
-        KEEP (*crtbegin.o(.dtors))
-        KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
-        KEEP (*(SORT(.dtors.*)))
-        KEEP (*crtend.o(.dtors))
-
-        . = ALIGN(4);
-        _efixed = .;            /* End of text section */
-    } > ram
-
-    . = ALIGN(4);
-    _etext = .;
-
-    .relocate : AT (_etext)
-    {
-        . = ALIGN(4);
-        _srelocate = .;
-        *(.ramfunc .ramfunc.*);
-        *(.data .data.*);
-        . = ALIGN(4);
-        _erelocate = .;
-    } > ram
-
-    /* .bss section which is used for uninitialized data */
-    .bss (NOLOAD) :
-    {
-        . = ALIGN(4);
-        _sbss = . ;
-        _szero = .;
-        *(.bss .bss.*)
-        *(COMMON)
-        . = ALIGN(4);
-        _ebss = . ;
-        _ezero = .;
-    } > ram
-
-    /* stack section */
-    .stack (NOLOAD):
-    {
-        . = ALIGN(8);
-        _sstack = .;
-        . = . + STACK_SIZE;
-        . = ALIGN(8);
-        _estack = .;
-    } > ram
-
-    /* .ARM.exidx is sorted, so has to go in its own output section.  */
-    PROVIDE_HIDDEN (__exidx_start = .);
-    .ARM.exidx :
-    {
-      *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-    } > ram
-    PROVIDE_HIDDEN (__exidx_end = .);
-
-    . = ALIGN(4);
-    _end = . ;
-}
-
diff --git a/hardware/arduino/sam/variants/adk2/linker_scripts/iar/flash.icf b/hardware/arduino/sam/variants/adk2/linker_scripts/iar/flash.icf
deleted file mode 100644
index 956230fbd..000000000
--- a/hardware/arduino/sam/variants/adk2/linker_scripts/iar/flash.icf
+++ /dev/null
@@ -1,49 +0,0 @@
-/*###ICF### Section handled by ICF editor, don't touch! ****/
-/*-Editor annotation file-*/
-/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\a_v1_0.xml" */
-/*-Vector table start*/
-define symbol __ICFEDIT_vector_start__ = 0x00080000; /*Add for CMSIS*/
-/*-Memory Regions-*/
-define symbol __ICFEDIT_region_RAM0_start__  = 0x20000000;
-define symbol __ICFEDIT_region_RAM0_end__    = 0x20007FFF;
-define symbol __ICFEDIT_region_RAM1_start__  = 0x20080000;
-define symbol __ICFEDIT_region_RAM1_end__    = 0x20083FFF;
-define symbol __ICFEDIT_region_ROM0_start__  = 0x00080000;
-define symbol __ICFEDIT_region_ROM0_end__    = 0x0009FFFF;
-define symbol __ICFEDIT_region_ROM1_start__  = 0x00100000;
-define symbol __ICFEDIT_region_ROM1_end__    = 0x0011FFFF;
-/*-Sizes-*/
-/*define symbol __ICFEDIT_size_cstack__        = 0x1000;*//*for nandflash*/
-define symbol __ICFEDIT_size_cstack__        = 0x2000;
-define symbol __ICFEDIT_size_heap__          = 0x200;
-/*-Specials-*/
-/*define symbol __ICFEDIT_region_RAM_VECT_start__ = __ICFEDIT_region_RAM0_start__;*/ /*Referenced for CMSIS*/
-/*define symbol __ICFEDIT_size_vectors__          = 0x100;*/ /*Referenced for CMSIS*/
-/*-Exports-*/
-/*export symbol __ICFEDIT_region_RAM_VECT_start__;*/
-export symbol __ICFEDIT_vector_start__; /*Add for CMSIS*/
-/**** End of ICF editor section. ###ICF###*/
-
-define memory mem with size   = 4G;
-/*define region RAM_VECT_region = mem:[from __ICFEDIT_region_RAM_VECT_start__ size __ICFEDIT_size_vectors__];*/ /*Referenced for CMSIS*/
-/*define region RAM0_region     = mem:[from __ICFEDIT_region_RAM0_start__+__ICFEDIT_size_vectors__ to __ICFEDIT_region_RAM0_end__];*/ /*Referenced for CMSIS*/
-define region RAM0_region     = mem:[from __ICFEDIT_region_RAM0_start__ to __ICFEDIT_region_RAM0_end__];
-define region RAM1_region     = mem:[from __ICFEDIT_region_RAM1_start__ to __ICFEDIT_region_RAM1_end__];
-/*define region RAM_region      = mem:[from __ICFEDIT_region_RAM0_start__+__ICFEDIT_size_vectors__ to __ICFEDIT_region_RAM0_end__] |
-                                mem:[from __ICFEDIT_region_RAM1_start__ to __ICFEDIT_region_RAM1_end__];*/ /*Referenced for CMSIS*/
-define region ROM0_region     = mem:[from __ICFEDIT_region_ROM0_start__ to __ICFEDIT_region_ROM0_end__];
-define region ROM1_region     = mem:[from __ICFEDIT_region_ROM1_start__ to __ICFEDIT_region_ROM1_end__];
-
-/*define block RamVect   with alignment = 8, size = __ICFEDIT_size_vectors__  { };*/
-define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
-
-initialize by copy { readwrite };
-do not initialize  { section .noinit };
-
-/*place at start of ROM0_region { readonly section .vectors };*/ /*Referenced for CMSIS*/
-place at address mem:__ICFEDIT_vector_start__ { readonly section .intvec }; /*Add for CMSIS*/
-place in ROM0_region          { readonly };
-place in RAM0_region          { readwrite, block HEAP };
-place in RAM1_region          { block CSTACK }; /* for nandflash*/
-/*place in RAM_VECT_region      { block RamVect };*/ /*Referenced for CMSIS*/
\ No newline at end of file
diff --git a/hardware/arduino/sam/variants/adk2/linker_scripts/iar/sram.icf b/hardware/arduino/sam/variants/adk2/linker_scripts/iar/sram.icf
deleted file mode 100644
index d7d33537a..000000000
--- a/hardware/arduino/sam/variants/adk2/linker_scripts/iar/sram.icf
+++ /dev/null
@@ -1,33 +0,0 @@
-/*###ICF### Section handled by ICF editor, don't touch! ****/
-/*-Editor annotation file-*/
-/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\a_v1_0.xml" */
-/*-Vector table start*/
-define symbol __ICFEDIT_vector_start__ = 0x20000000;
-/*-Memory Regions-*/
-define symbol __ICFEDIT_region_RAM0_start__  = 0x20000000;
-define symbol __ICFEDIT_region_RAM0_end__    = 0x20007FFF;
-define symbol __ICFEDIT_region_RAM1_start__  = 0x20080000;
-define symbol __ICFEDIT_region_RAM1_end__    = 0x20083FFF;
-/*-Sizes-*/
-define symbol __ICFEDIT_size_cstack__        = 0x900;
-define symbol __ICFEDIT_size_heap__          = 0x200;
-/*-Exports-*/
-export symbol __ICFEDIT_vector_start__;
-/**** End of ICF editor section. ###ICF###*/
-
-define memory mem with size   = 4G;
-define region RAM0_region     = mem:[from __ICFEDIT_region_RAM0_start__ to __ICFEDIT_region_RAM0_end__];
-define region RAM1_region     = mem:[from __ICFEDIT_region_RAM1_start__ to __ICFEDIT_region_RAM1_end__];
-/*define region RAM_region      = mem:[from __ICFEDIT_region_RAM0_start__+__ICFEDIT_size_vectors__ to __ICFEDIT_region_RAM0_end__] |
-                                mem:[from __ICFEDIT_region_RAM1_start__ to __ICFEDIT_region_RAM1_end__];*/
-
-/* define block RamVect   with alignment = 8, size = __ICFEDIT_size_vectors__  { }; */
-define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
-
-initialize by copy { readwrite };
-do not initialize  { section .noinit };
-
-place at address mem:__ICFEDIT_vector_start__ { readonly section .intvec };
-place in RAM0_region          { readonly };
-place in RAM1_region          { readwrite, block CSTACK, block HEAP };
diff --git a/hardware/arduino/sam/variants/adk2/pins_arduino.h b/hardware/arduino/sam/variants/adk2/pins_arduino.h
deleted file mode 100644
index 4e279aa7b..000000000
--- a/hardware/arduino/sam/variants/adk2/pins_arduino.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
-  Copyright (c) 2011 Arduino.  All right reserved.
-
-  This library is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Lesser General Public
-  License as published by the Free Software Foundation; either
-  version 2.1 of the License, or (at your option) any later version.
-
-  This library is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public
-  License along with this library; if not, write to the Free Software
-  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-// API compatibility
-#include "variant.h"
-
diff --git a/hardware/arduino/sam/variants/adk2/variant.cpp b/hardware/arduino/sam/variants/adk2/variant.cpp
deleted file mode 100644
index 96d93ba7f..000000000
--- a/hardware/arduino/sam/variants/adk2/variant.cpp
+++ /dev/null
@@ -1,376 +0,0 @@
-/*
-  Copyright (c) 2012 Google, Inc.  All right reserved.
-
-  This library is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Lesser General Public
-  License as published by the Free Software Foundation; either
-  version 2.1 of the License, or (at your option) any later version.
-
-  This library is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public
-  License along with this library; if not, write to the Free Software
-  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-#include "variant.h"
-
-/*
- * ADK2 Board pin  |  PORT
- * ----------------+--------
- *   0   RXD0      |  PA10
- *   1   TXD0      |  PA11
- *   2       PWML0 |  PA21
- *   3       PWML1 |  PC4
- *   4       PWML2 |  PC6
- *   5       PWML3 |  PC8
- *   6       PWML4 |  PC21
- *   7       PWML5 |  PC22
- *   8       PWML6 |  PC23
- *   9       PWML7 |  PC24
- *  10       PWMH0 |  PC3
- *  11       PWMH1 |  PC5
- *  12       PWMH2 |  PC7
- *  13       PWMH3 |  PC9 ("L" LED on board)
- *  14   TX3       |  PD4
- *  15   RX3       |  PD5
- *  16   TX2       |  PB20
- *  17   RX2       |  PB21
- *  18   TX1       |  PA13
- *  19   RX1       |  PA12
- *  20   SDA       |  PA17
- *  21   SCL       |  PA18
- *  22             |  PA14
- *  23             |  PA15
- *  24             |  PD0
- *  25             |  PD1
- *  26             |  PD2
- *  27             |  PD3
- *  28             |  PB23
- *  29             |  PB22
- *  30             |  PC28
- *  31             |  PC27
- *  32             |  PC26
- *  33             |  PC25
- *  34             |  PB8
- *  35             |  PB9
- *  36             |  PB6
- *  37             |  PB7
- *  38             |  PB4
- *  39             |  PB5
- *  40             |  PB2
- *  41             |  PB3
- *  42             |  PB0
- *  43             |  PB1
- *  44             |  PA29
- *  45             |  PA19
- *  46             |  PA20
- *  47             |  PA16
- *  48             |  PC29
- *  49             |  PC30
- *  50             |  PA25
- *  51             |  PA26
- *  52             |  PA27
- *  53             |  PA28
- *  A0             |  PA24
- *  A1             |  PA23
- *  A2             |  PA22
- *  A3             |  PA6
- *  A4             |  PA4
- *  A5             |  PA3
- *  A6             |  PA2
- *  A7             |  PB17
- *  A8             |  PB18
- *  A9             |  PB19
- * A10             |  Pxx
- * A11             |  Pxx
- * A12             |  PB15 (DAC0)
- * A13             |  PB16 (DAC1)
- * A14             |  Pxx
- * A15             |  Pxx
- *      SDA1       |  PB12
- *      SCL1       |  PB13
- *
- * LEDs            |  PORT
- * ----------------+--------
- * "TX"            |  (On LPC1343)
- * "RX"            |  (On LPC1343)
- * "L"             |  PC9
- */
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Pins descriptions
- */
-extern const PinDescription g_APinDescription[]=
-{
-  // 0 .. 53 - Digital pins
-  // ----------------------
-  // 0/1 - USART0 (Serial)
-  { PIOA, PIO_PA10A_RXD0,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT,  PIN_ATTR_DIGITAL,                 NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // RXD0
-  { PIOA, PIO_PA11A_TXD0,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT,  PIN_ATTR_DIGITAL,                 NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TXD0
-
-  // 2
-  { PIOA, PIO_PA21B_PWML0,   ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH0, NO_TC    }, // PWML0
-  { PIOC, PIO_PC4B_PWML1,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH1, NO_TC    }, // PWML1
-  { PIOC, PIO_PC6B_PWML2,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH2, NO_TC    }, // PWML2
-
-  // 5
-  { PIOC, PIO_PC8B_PWML3,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH3, NO_TC    }, // PWML3
-  { PIOC, PIO_PC21B_PWML4,   ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM, NO_TC     }, // PWML4
-  { PIOC, PIO_PC22B_PWML5,   ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM, NO_TC     }, // PWML5
-  { PIOC, PIO_PC23B_PWML6,   ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM, NO_TC     }, // PWML6
-  { PIOC, PIO_PC24B_PWML7,   ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM, NO_TC     }, // PWML7
-  // 10
-  { PIOC, PIO_PC3B_PWMH0,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH0, NO_TC    }, // PWMH0
-  { PIOC, PIO_PC5B_PWMH1,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH1, NO_TC    }, // PWMH1
-  { PIOC, PIO_PC7B_PWMH2,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH2, NO_TC    }, // PWMH2
-
-  // 13 - AMBER LED
-  { PIOC, PIO_PC9B_PWMH3,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH3,  NO_TC   }, // PWMH3
-
-  // 14/15 - USART3 (Serial4)
-  { PIOD, PIO_PD4B_TXD3,     ID_PIOD, PIO_PERIPH_B, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TXD3
-  { PIOD, PIO_PD5B_RXD3,     ID_PIOD, PIO_PERIPH_B, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // RXD3
-
-  // 16/17 - USART2 (Serial3)
-  { PIOB, PIO_PB20A_TXD2,    ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TXD2
-  { PIOB, PIO_PB21A_RXD2,    ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // RXD2
-
-  // 18/19 - USART1 (Serial2)
-  { PIOA, PIO_PA13A_TXD1,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TXD1
-  { PIOA, PIO_PA12A_RXD1,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // RXD1
-
-  // 20/21 - TWI0
-  { PIOA, PIO_PA17A_TWD0,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TWD0 - SDA0
-  { PIOA, PIO_PA18A_TWCK0,   ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TWCK0 - SCL0
-
-  // 22
-  { PIOA, PIO_PA14,          ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 22
-  { PIOA, PIO_PA15,          ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 23
-  { PIOD, PIO_PD0,           ID_PIOD, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 24
-  { PIOD, PIO_PD1,           ID_PIOD, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 25
-
-  // 26
-  { PIOD, PIO_PD2,           ID_PIOD, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 26
-  { PIOD, PIO_PD3,           ID_PIOD, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 27
-  { PIOB, PIO_PB23,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 28
-  { PIOB, PIO_PB22,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 29
-
-  // 30
-  { PIOC, PIO_PC28,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 30
-  { PIOC, PIO_PC27,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 31
-  { PIOC, PIO_PC26,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 32
-  { PIOC, PIO_PC25,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 33
-
-  // 34
-  { PIOB, PIO_PB8,           ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 34
-  { PIOB, PIO_PB9,           ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 35
-  { PIOB, PIO_PB6,           ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 36
-  { PIOB, PIO_PB7,           ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 37
-
-  // 38
-  { PIOB, PIO_PB4,           ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 38
-  { PIOB, PIO_PB5,           ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 39
-  { PIOB, PIO_PB2,           ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 40
-  { PIOB, PIO_PB3,           ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 41
-
-  // 42
-  { PIOB, PIO_PB0,           ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 42
-  { PIOB, PIO_PB1,           ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 43
-  { PIOA, PIO_PA29,          ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 44
-  { PIOA, PIO_PA19,          ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 45
-
-  // 46
-  { PIOA, PIO_PA20,          ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 46
-  { PIOA, PIO_PA16,          ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 47
-  { PIOC, PIO_PC29,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 48
-  { PIOC, PIO_PC30,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 49
-
-  // 50
-  { PIOA, PIO_PA25A_SPI0_MISO,  ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 50
-  { PIOA, PIO_PA26A_SPI0_MOSI,  ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 51
-  { PIOA, PIO_PA27A_SPI0_SPCK,  ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 52
-  { PIOA, PIO_PA28A_SPI0_NPCS0, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 53
-
-  // 54 .. 63 - Analog pins
-  // ----------------------
-  { PIOA, PIO_PA24X1_AD6,    ID_PIOA, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC0,   ADC6,   NO_PWM,  NO_TC    }, // AD0
-  { PIOA, PIO_PA23X1_AD5,    ID_PIOA, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC1,   ADC5,   NO_PWM,  NO_TC    }, // AD1
-  { PIOA, PIO_PA22X1_AD4,    ID_PIOA, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC2,   ADC4,   NO_PWM,  NO_TC    }, // AD2
-  { PIOA, PIO_PA6X1_AD3,     ID_PIOA, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC3,   ADC3,   NO_PWM,  NO_TC    }, // AD3
-  // 58
-  { PIOA, PIO_PA4X1_AD2,     ID_PIOA, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC4,   ADC2,   NO_PWM,  NO_TC    }, // AD4
-  { PIOA, PIO_PA3X1_AD1,     ID_PIOA, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC5,   ADC1,   NO_PWM,  NO_TC    }, // AD5
-  { PIOA, PIO_PA2X1_AD0,     ID_PIOA, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC6,   ADC0,   NO_PWM,  TC0_CHA1 }, // AD6
-  { PIOB, PIO_PB17X1_AD10,   ID_PIOB, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC7,   ADC10,  NO_PWM,  NO_TC    }, // AD7
-  // 62
-  { PIOB, PIO_PB18X1_AD11,   ID_PIOB, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC8,   ADC11,  NO_PWM,  NO_TC    }, // AD8
-  { PIOB, PIO_PB19X1_AD12,   ID_PIOB, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC9,   ADC12,  NO_PWM,  NO_TC    }, // AD9
-
-  // 64/65 - TWI1
-  { PIOB, PIO_PB12A_TWD1,    ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TWD1 - SDA1
-  { PIOB, PIO_PB13A_TWCK1,   ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TWCK1 - SCL1
-
-  // 66/67 - Debug UART
-  { PIOA, PIO_PA8A_URXD,     ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM, NO_TC     }, // UART RXD
-  { PIOA, PIO_PA9A_UTXD,     ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM, NO_TC     }, // UART TXD
-
-  // 68 .. 74 - "All pins" masks
-
-  // 68 - TWI0 all pins
-  { PIOA, PIO_PA17A_TWD0|PIO_PA18A_TWCK0, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 69 - TWI1 all pins
-  { PIOB, PIO_PB12A_TWD1|PIO_PB13A_TWCK1, ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 70 - UART (Serial) all pins
-  { PIOA, PIO_PA8A_URXD|PIO_PA9A_UTXD, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 71 - USART0 (Serial2) all pins
-  { PIOA, PIO_PA10A_RXD0|PIO_PA11A_TXD0, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 72 - USART1 (Serial3) all pins
-  { PIOA, PIO_PA12A_RXD1|PIO_PA13A_TXD1, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 73 - USART2 (Serial4) all pins
-  { PIOB, PIO_PB21A_RXD2|PIO_PB20A_TXD2, ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 74 - USART3 (Serial5) all pins
-  { PIOD, PIO_PD5B_RXD3|PIO_PD4B_TXD3, ID_PIOD, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-
-  // 75 - USB
-  { PIOB, PIO_PB11A_UOTGID|PIO_PB10A_UOTGVBOF, ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // ID - VBOF
-
-  // END
-  { NULL, 0, 0, PIO_NOT_A_PIN, PIO_DEFAULT, 0, NO_ADC, NO_ADC, NO_PWM, NO_TC }
-} ;
-
-#ifdef __cplusplus
-}
-#endif
-
-/*
- * UART objects
- */
-RingBuffer rx_buffer1 ;
-
-UARTClass Serial1( UART, UART_IRQn, ID_UART, &rx_buffer1 ) ;
-
-// IT handlers
-void UART_Handler(void)
-{
-  Serial1.IrqHandler() ;
-}
-
-// ----------------------------------------------------------------------------
-/*
- * USART objects
- */
-RingBuffer rx_buffer2 ;
-RingBuffer rx_buffer3 ;
-RingBuffer rx_buffer4 ;
-RingBuffer rx_buffer5 ;
-
-USARTClass Serial2( USART0, USART0_IRQn, ID_USART0, &rx_buffer2 ) ;
-USARTClass Serial3( USART1, USART1_IRQn, ID_USART1, &rx_buffer3 ) ;
-USARTClass Serial4( USART2, USART2_IRQn, ID_USART2, &rx_buffer4 ) ;
-USARTClass Serial5( USART3, USART3_IRQn, ID_USART3, &rx_buffer5 ) ;
-
-// IT handlers
-void USART0_Handler( void )
-{
-  Serial2.IrqHandler() ;
-}
-
-void USART1_Handler( void )
-{
-  Serial3.IrqHandler() ;
-}
-
-void USART2_Handler( void )
-{
-  Serial4.IrqHandler() ;
-}
-
-void USART3_Handler( void )
-{
-  Serial5.IrqHandler() ;
-}
-
-// ----------------------------------------------------------------------------
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- *
- */
-extern void init( void )
-{
-  SystemInit() ;
-
-  // Set Systick to 1ms interval, common to all SAM3 variants
-  if ( SysTick_Config( SystemCoreClock / 1000 ) )
-  {
-    // Capture error
-    while ( 1 ) ;
-  }
-
-  // Disable watchdog, common to all SAM variants
-  WDT_Disable( WDT ) ;
-
-  // Initialize Serial port UART, common to all SAM3 variants
-  PIO_Configure(
-    g_APinDescription[PINS_UART].pPort,
-    g_APinDescription[PINS_UART].ulPinType,
-    g_APinDescription[PINS_UART].ulPin,
-    g_APinDescription[PINS_UART].ulPinConfiguration);
-
-  // Initialize Serial ports USART
-  PIO_Configure(
-    g_APinDescription[PINS_USART0].pPort,
-    g_APinDescription[PINS_USART0].ulPinType,
-    g_APinDescription[PINS_USART0].ulPin,
-    g_APinDescription[PINS_USART0].ulPinConfiguration);
-  PIO_Configure(
-    g_APinDescription[PINS_USART1].pPort,
-    g_APinDescription[PINS_USART1].ulPinType,
-    g_APinDescription[PINS_USART1].ulPin,
-    g_APinDescription[PINS_USART1].ulPinConfiguration);
-  PIO_Configure(
-    g_APinDescription[PINS_USART2].pPort,
-    g_APinDescription[PINS_USART2].ulPinType,
-    g_APinDescription[PINS_USART2].ulPin,
-    g_APinDescription[PINS_USART2].ulPinConfiguration);
-  PIO_Configure(
-    g_APinDescription[PINS_USART3].pPort,
-    g_APinDescription[PINS_USART3].ulPinType,
-    g_APinDescription[PINS_USART3].ulPin,
-    g_APinDescription[PINS_USART3].ulPinConfiguration);
-
-  // Initialize USB
-  PIO_Configure(
-    g_APinDescription[PINS_USB].pPort,
-    g_APinDescription[PINS_USB].ulPinType,
-    g_APinDescription[PINS_USB].ulPin,
-    g_APinDescription[PINS_USB].ulPinConfiguration);
-
-  // Initialize 10bit Analog Controller
-  pmc_enable_periph_clk( ID_ADC ) ;
-  adc_init( ADC, SystemCoreClock, ADC_FREQ_MAX, ADC_STARTUP_FAST ) ;
-  adc_configure_timing(ADC, 0, ADC_SETTLING_TIME_3, 1);
-  adc_configure_trigger(ADC, ADC_TRIG_SW, 0); // Disable hardware trigger.
-  adc_disable_interrupt( ADC, 0xFFFFFFFF ) ; // Disable all ADC interrupts.
-  adc_disable_all_channel( ADC ) ;
-
-  // Initialize analogOutput module
-  analogOutputInit();
-}
-
-#ifdef __cplusplus
-}
-#endif
-
diff --git a/hardware/arduino/sam/variants/adk2/variant.h b/hardware/arduino/sam/variants/adk2/variant.h
deleted file mode 100644
index 4b1816abb..000000000
--- a/hardware/arduino/sam/variants/adk2/variant.h
+++ /dev/null
@@ -1,188 +0,0 @@
-/*
-  Copyright (c) 2012 Google, Inc.  All right reserved.
-
-  This library is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Lesser General Public
-  License as published by the Free Software Foundation; either
-  version 2.1 of the License, or (at your option) any later version.
-
-  This library is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public
-  License along with this library; if not, write to the Free Software
-  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-#ifndef _VARIANT_ADK2_
-#define _VARIANT_ADK2_
-
-/*----------------------------------------------------------------------------
- *        Headers
- *----------------------------------------------------------------------------*/
-
-// We have native USB on this variant
-//#define USBCON
-
-#include "Arduino.h"
-#ifdef __cplusplus
-#include "UARTClass.h"
-#include "USARTClass.h"
-#endif
-
-#ifdef __cplusplus
-extern "C"{
-#endif // __cplusplus
-
-/**
- * Libc porting layers
- */
-#if defined (  __GNUC__  ) /* GCC CS3 */
-#    include <syscalls.h> /** RedHat Newlib minimal stub */
-#endif
-
-/*----------------------------------------------------------------------------
- *        Definitions
- *----------------------------------------------------------------------------*/
-
-/*----------------------------------------------------------------------------*/
-
-#ifndef adk2
-#define adk2
-#endif
-
-/** Name of the board */
-#define VARIANT_NAME "ADK2"
-
-/** Frequency of the board main oscillator */
-#define VARIANT_MAINOSC           12000000
-
-/** Master clock frequency */
-#define VARIANT_MCK               84000000
-
-/*----------------------------------------------------------------------------
- *        Pins
- *----------------------------------------------------------------------------*/
-
-// Number of pins defined in PinDescription array
-#define PINS_COUNT           (75u)
-
-// LEDs
-#define PIN_LED_13           (13u)
-#define PIN_LED_RXL          (73u) // fixme
-#define PIN_LED_TXL          (74u) // fixme
-#define PIN_LED              PIN_LED_13
-#define PIN_LED2             PIN_LED_RXL // fixme
-#define PIN_LED3             PIN_LED_TXL // fixme
-
-/*
- * SPI Interfaces
- */
-#define SPI_INTERFACES_COUNT 1
-
-#define SPI_INTERFACE        SPI
-#define SPI_INTERFACE_ID     ID_SPI
-#define PIN_SPI_SS           (53u)
-#define PIN_SPI_MOSI         (51u)
-#define PIN_SPI_MISO         (50u)
-#define PIN_SPI_SCK          (52u)
-
-static const uint8_t SS   = 53 ;
-static const uint8_t MOSI = 51 ;
-static const uint8_t MISO = 50 ;
-static const uint8_t SCK  = 52 ;
-
-/*
- * Wire Interfaces
- */
-#define WIRE_INTERFACES_COUNT 2
-
-#define PIN_WIRE_SDA         (20u)
-#define PIN_WIRE_SCL         (21u)
-#define WIRE_INTERFACE       TWI0
-#define WIRE_INTERFACE_ID    ID_TWI0
-#define WIRE_ISR_HANDLER     TWI1_IrqHandler
-
-#define PIN_WIRE1_SDA        (64u)
-#define PIN_WIRE1_SCL        (65u)
-#define WIRE1_INTERFACE      TWI1
-#define WIRE1_INTERFACE_ID   ID_TWI1
-#define WIRE1_ISR_HANDLER    TWI0_IrqHandler
-
-/*
- * UART/USART Interfaces
- */
-#define PINS_UART            (70u)
-
-#define PINS_USART0          (71u)
-#define PINS_USART1          (72u)
-#define PINS_USART2          (73u)
-#define PINS_USART3          (74u)
-
-/*
- * USB Interfaces
- */
-#define PINS_USB             (75u)
-
-
-/*
- * Analog pins
- */
-static const uint8_t A0  = 54;
-static const uint8_t A1  = 55;
-static const uint8_t A2  = 56;
-static const uint8_t A3  = 57;
-static const uint8_t A4  = 58;
-static const uint8_t A5  = 59;
-static const uint8_t A6  = 60;
-static const uint8_t A7  = 61;
-static const uint8_t A8  = 62;
-static const uint8_t A9  = 63;
-//static const uint8_t A10 = 64;
-//static const uint8_t A11 = 65;
-//static const uint8_t A12 = 66;
-//static const uint8_t A13 = 67;
-// static const uint8_t A14 = ;
-// static const uint8_t A15 = ;
-
-/*
- * PWM
- */
-#define PWM_INTERFACE        PWM
-#define PWM_INTERFACE_ID     ID_PWM
-#define PWM_FREQUENCY        1000
-#define PWM_MAX_DUTY_CYCLE   255
-#define PWM_MIN_DUTY_CYCLE   0
-
-/*
- * TC
- */
-#define TC_INTERFACE        TC0
-#define TC_INTERFACE_ID     ID_TC0
-#define TC_FREQUENCY        1000
-#define TC_MAX_DUTY_CYCLE   255
-#define TC_MIN_DUTY_CYCLE   0
-
-#ifdef __cplusplus
-}
-#endif
-
-/*----------------------------------------------------------------------------
- *        Arduino objects - C++ only
- *----------------------------------------------------------------------------*/
-
-#ifdef __cplusplus
-
-extern UARTClass Serial1 ;
-
-extern USARTClass Serial2 ;
-extern USARTClass Serial3 ;
-extern USARTClass Serial4 ;
-extern USARTClass Serial5 ;
-
-#endif
-
-#endif /* _VARIANT_ADK2_ */
-
diff --git a/hardware/arduino/sam/variants/arduino_due_u/1661fa.pdf b/hardware/arduino/sam/variants/arduino_due_u/1661fa.pdf
deleted file mode 100644
index bda8df4cb..000000000
Binary files a/hardware/arduino/sam/variants/arduino_due_u/1661fa.pdf and /dev/null differ
diff --git a/hardware/arduino/sam/variants/arduino_due_u/Arduino_ZZZ_U01.pdf b/hardware/arduino/sam/variants/arduino_due_u/Arduino_ZZZ_U01.pdf
deleted file mode 100644
index 0fe138c7a..000000000
Binary files a/hardware/arduino/sam/variants/arduino_due_u/Arduino_ZZZ_U01.pdf and /dev/null differ
diff --git a/hardware/arduino/sam/variants/arduino_due_u/build_gcc/Makefile b/hardware/arduino/sam/variants/arduino_due_u/build_gcc/Makefile
deleted file mode 100644
index 3b32c6528..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/build_gcc/Makefile
+++ /dev/null
@@ -1,42 +0,0 @@
-#
-#  Copyright (c) 2011 Arduino.  All right reserved.
-#
-#  This library is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU Lesser General Public
-#  License as published by the Free Software Foundation; either
-#  version 2.1 of the License, or (at your option) any later version.
-#
-#  This library is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-#  See the GNU Lesser General Public License for more details.
-#
-#  You should have received a copy of the GNU Lesser General Public
-#  License along with this library; if not, write to the Free Software
-#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-
-SUBMAKE_OPTIONS=--no-builtin-rules --no-builtin-variables --no-print-directory
-
-#-------------------------------------------------------------------------------
-# Rules
-#-------------------------------------------------------------------------------
-
-all: arduino_due_u
-
-.PHONY: arduino_due_u
-arduino_due_u:
-	@echo ------------------------------------------------------------------------------------
-	@echo --- Making arduino_due_u
-	@$(MAKE) DEBUG=1 $(SUBMAKE_OPTIONS) -f libvariant_arduino_due_u.mk
-#	@$(MAKE) $(SUBMAKE_OPTIONS) -f libvariant_arduino_due.mk
-	@echo ------------------------------------------------------------------------------------
-
-.PHONY: clean
-clean:
-	@echo ------------------------------------------------------------------------------------
-	@echo --- Cleaning arduino_due_u
-	@$(MAKE) DEBUG=1 $(SUBMAKE_OPTIONS) -f libvariant_arduino_due_u.mk $@
-#	@$(MAKE) $(SUBMAKE_OPTIONS) -f libvariant_arduino_due.mk $@
-	@echo ------------------------------------------------------------------------------------
-
diff --git a/hardware/arduino/sam/variants/arduino_due_u/build_gcc/debug.mk b/hardware/arduino/sam/variants/arduino_due_u/build_gcc/debug.mk
deleted file mode 100644
index d0716744a..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/build_gcc/debug.mk
+++ /dev/null
@@ -1,25 +0,0 @@
-#
-#  Copyright (c) 2011 Arduino.  All right reserved.
-#
-#  This library is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU Lesser General Public
-#  License as published by the Free Software Foundation; either
-#  version 2.1 of the License, or (at your option) any later version.
-#
-#  This library is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
-#  See the GNU Lesser General Public License for more details.
-#
-#  You should have received a copy of the GNU Lesser General Public
-#  License along with this library; if not, write to the Free Software
-#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-
-# Optimization level
-# -O1 Optimize
-# -O2 Optimize even more
-# -O3 Optimize yet more
-# -O0 Reduce compilation time and make debugging produce the expected results
-# -Os Optimize for size
-OPTIMIZATION = -g -O0 -DDEBUG
diff --git a/hardware/arduino/sam/variants/arduino_due_u/build_gcc/gcc.mk b/hardware/arduino/sam/variants/arduino_due_u/build_gcc/gcc.mk
deleted file mode 100644
index 32f35d264..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/build_gcc/gcc.mk
+++ /dev/null
@@ -1,82 +0,0 @@
-#
-#  Copyright (c) 2011 Arduino.  All right reserved.
-#
-#  This library is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU Lesser General Public
-#  License as published by the Free Software Foundation; either
-#  version 2.1 of the License, or (at your option) any later version.
-#
-#  This library is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-#  See the GNU Lesser General Public License for more details.
-#
-#  You should have received a copy of the GNU Lesser General Public
-#  License along with this library; if not, write to the Free Software
-#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-
-# Tool suffix when cross-compiling
-CROSS_COMPILE = $(ARM_GCC_TOOLCHAIN)/arm-none-eabi-
-
-# Compilation tools
-AR = $(CROSS_COMPILE)ar
-CC = $(CROSS_COMPILE)gcc
-CXX = $(CROSS_COMPILE)g++
-AS = $(CROSS_COMPILE)as
-NM = $(CROSS_COMPILE)nm
-ifeq ($(OS),Windows_NT)
-RM=cs-rm -Rf
-else
-RM=rm -Rf
-endif
-
-SEP=\\
-
-# ---------------------------------------------------------------------------------------
-# C Flags
-
-CFLAGS += -Wall -Wchar-subscripts -Wcomment -Wformat=2 -Wimplicit-int
-CFLAGS += -Werror-implicit-function-declaration -Wmain -Wparentheses
-CFLAGS += -Wsequence-point -Wreturn-type -Wswitch -Wtrigraphs -Wunused
-CFLAGS += -Wuninitialized -Wunknown-pragmas -Wfloat-equal -Wundef
-CFLAGS += -Wshadow -Wpointer-arith -Wbad-function-cast -Wwrite-strings
-CFLAGS += -Wsign-compare -Waggregate-return -Wstrict-prototypes
-CFLAGS += -Wmissing-prototypes -Wmissing-declarations
-CFLAGS += -Wformat -Wmissing-format-attribute -Wno-deprecated-declarations
-CFLAGS += -Wpacked -Wredundant-decls -Wnested-externs -Winline -Wlong-long
-CFLAGS += -Wunreachable-code
-CFLAGS += -Wcast-align
-#CFLAGS += -Wmissing-noreturn
-#CFLAGS += -Wconversion
-
-CFLAGS += --param max-inline-insns-single=500 -mcpu=cortex-m3 -mthumb -mlong-calls -ffunction-sections -fdata-sections -nostdlib -std=c99
-CFLAGS += $(OPTIMIZATION) $(INCLUDES) -D$(CHIP) -D$(VARIANT)
-
-# To reduce application size use only integer printf function.
-CFLAGS += -Dprintf=iprintf
-
-# ---------------------------------------------------------------------------------------
-# CPP Flags
-
-CPPFLAGS += -Wall -Wchar-subscripts -Wcomment -Wformat=2
-CPPFLAGS += -Wmain -Wparentheses -Wcast-align -Wunreachable-code
-CPPFLAGS += -Wsequence-point -Wreturn-type -Wswitch -Wtrigraphs -Wunused
-CPPFLAGS += -Wuninitialized -Wunknown-pragmas -Wfloat-equal -Wundef
-CPPFLAGS += -Wshadow -Wpointer-arith -Wwrite-strings
-CPPFLAGS += -Wsign-compare -Waggregate-return -Wmissing-declarations
-CPPFLAGS += -Wformat -Wmissing-format-attribute -Wno-deprecated-declarations
-CPPFLAGS += -Wpacked -Wredundant-decls -Winline -Wlong-long
-#CPPFLAGS += -Wmissing-noreturn
-#CPPFLAGS += -Wconversion
-
-CPPFLAGS += --param max-inline-insns-single=500 -mcpu=cortex-m3 -mthumb -mlong-calls -ffunction-sections -fdata-sections -fno-rtti -fno-exceptions -std=c++98
-CPPFLAGS += $(OPTIMIZATION) $(INCLUDES) -D$(CHIP)
-
-# To reduce application size use only integer printf function.
-CPPFLAGS += -Dprintf=iprintf
-
-# ---------------------------------------------------------------------------------------
-# ASM Flags
-
-ASFLAGS = -mcpu=cortex-m3 -mthumb -Wall -g $(OPTIMIZATION) $(INCLUDES)
diff --git a/hardware/arduino/sam/variants/arduino_due_u/build_gcc/libvariant_arduino_due_u.mk b/hardware/arduino/sam/variants/arduino_due_u/build_gcc/libvariant_arduino_due_u.mk
deleted file mode 100644
index 5eafdd107..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/build_gcc/libvariant_arduino_due_u.mk
+++ /dev/null
@@ -1,183 +0,0 @@
-#
-#  Copyright (c) 2012 Arduino.  All right reserved.
-#
-#  This library is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU Lesser General Public
-#  License as published by the Free Software Foundation; either
-#  version 2.1 of the License, or (at your option) any later version.
-#
-#  This library is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-#  See the GNU Lesser General Public License for more details.
-#
-#  You should have received a copy of the GNU Lesser General Public
-#  License along with this library; if not, write to the Free Software
-#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-
-# Makefile for compiling libArduino
-.SUFFIXES: .o .a .c .s
-
-CHIP=__SAM3U4E__
-VARIANT=arduino_due_u
-LIBNAME=libvariant_$(VARIANT)
-TOOLCHAIN=gcc
-
-#-------------------------------------------------------------------------------
-# Path
-#-------------------------------------------------------------------------------
-
-# Output directories
-OUTPUT_BIN = ../../../cores/arduino
-
-# Libraries
-PROJECT_BASE_PATH = ..
-SYSTEM_PATH = ../../../system
-CMSIS_ROOT_PATH = $(SYSTEM_PATH)/CMSIS
-CMSIS_ARM_PATH=$(CMSIS_ROOT_PATH)/CMSIS/Include
-CMSIS_ATMEL_PATH=$(CMSIS_ROOT_PATH)/Device/ATMEL
-#CMSIS_CHIP_PATH=$(CMSIS_ROOT_PATH)/Device/ATMEL/$(CHIP_SERIE)
-
-ARDUINO_PATH = ../../../cores/arduino
-VARIANT_BASE_PATH = ../../../variants
-VARIANT_PATH = ../../../variants/$(VARIANT)
-
-#-------------------------------------------------------------------------------
-# Files
-#-------------------------------------------------------------------------------
-
-#vpath %.h $(PROJECT_BASE_PATH) $(SYSTEM_PATH) $(VARIANT_PATH)
-vpath %.cpp $(PROJECT_BASE_PATH)
-
-VPATH+=$(PROJECT_BASE_PATH)
-
-INCLUDES =
-#INCLUDES += -I$(PROJECT_BASE_PATH)
-INCLUDES += -I$(ARDUINO_PATH)
-INCLUDES += -I$(ARDUINO_PATH)/USB
-INCLUDES += -I$(SYSTEM_PATH)
-INCLUDES += -I$(SYSTEM_PATH)/libsam
-INCLUDES += -I$(VARIANT_BASE_PATH)
-INCLUDES += -I$(VARIANT_PATH)
-INCLUDES += -I$(CMSIS_ARM_PATH)
-INCLUDES += -I$(CMSIS_ATMEL_PATH)
-
-#-------------------------------------------------------------------------------
-ifdef DEBUG
-include debug.mk
-else
-include release.mk
-endif
-
-#-------------------------------------------------------------------------------
-# Tools
-#-------------------------------------------------------------------------------
-
-include $(TOOLCHAIN).mk
-
-#-------------------------------------------------------------------------------
-ifdef DEBUG
-OUTPUT_OBJ=debug
-OUTPUT_LIB_POSTFIX=dbg
-else
-OUTPUT_OBJ=release
-OUTPUT_LIB_POSTFIX=rel
-endif
-
-OUTPUT_LIB=$(LIBNAME)_$(TOOLCHAIN)_$(OUTPUT_LIB_POSTFIX).a
-OUTPUT_PATH=$(OUTPUT_OBJ)_$(VARIANT)
-
-#-------------------------------------------------------------------------------
-# C source files and objects
-#-------------------------------------------------------------------------------
-C_SRC=$(wildcard $(PROJECT_BASE_PATH)/*.c)
-
-C_OBJ_TEMP = $(patsubst %.c, %.o, $(notdir $(C_SRC)))
-
-# during development, remove some files
-C_OBJ_FILTER=
-
-C_OBJ=$(filter-out $(C_OBJ_FILTER), $(C_OBJ_TEMP))
-
-#-------------------------------------------------------------------------------
-# CPP source files and objects
-#-------------------------------------------------------------------------------
-CPP_SRC=$(wildcard $(PROJECT_BASE_PATH)/*.cpp)
-
-CPP_OBJ_TEMP = $(patsubst %.cpp, %.o, $(notdir $(CPP_SRC)))
-
-# during development, remove some files
-CPP_OBJ_FILTER=
-
-CPP_OBJ=$(filter-out $(CPP_OBJ_FILTER), $(CPP_OBJ_TEMP))
-
-#-------------------------------------------------------------------------------
-# Assembler source files and objects
-#-------------------------------------------------------------------------------
-A_SRC=$(wildcard $(PROJECT_BASE_PATH)/*.s)
-
-A_OBJ_TEMP=$(patsubst %.s, %.o, $(notdir $(A_SRC)))
-
-# during development, remove some files
-A_OBJ_FILTER=
-
-A_OBJ=$(filter-out $(A_OBJ_FILTER), $(A_OBJ_TEMP))
-
-#-------------------------------------------------------------------------------
-# Rules
-#-------------------------------------------------------------------------------
-all: $(VARIANT)
-
-$(VARIANT): create_output $(OUTPUT_LIB)
-
-.PHONY: create_output
-create_output:
-	@echo ------------------------------------------------------------------------------------
-	@echo -------------------------
-	@echo --- Preparing variant $(VARIANT) files in $(OUTPUT_PATH) $(OUTPUT_BIN)
-	@echo -------------------------
-#	@echo *$(INCLUDES)
-#	@echo -------------------------
-#	@echo *$(C_SRC)
-#	@echo -------------------------
-#	@echo *$(C_OBJ)
-#	@echo -------------------------
-#	@echo *$(addprefix $(OUTPUT_PATH)/, $(C_OBJ))
-#	@echo -------------------------
-#	@echo *$(CPP_SRC)
-#	@echo -------------------------
-#	@echo *$(CPP_OBJ)
-#	@echo -------------------------
-#	@echo *$(addprefix $(OUTPUT_PATH)/, $(CPP_OBJ))
-#	@echo -------------------------
-#	@echo *$(A_SRC)
-#	@echo -------------------------
-
-	-@mkdir $(OUTPUT_PATH) 1>NUL 2>&1
-	@echo ------------------------------------------------------------------------------------
-
-$(addprefix $(OUTPUT_PATH)/,$(C_OBJ)): $(OUTPUT_PATH)/%.o: %.c
-#	@"$(CC)" -v -c $(CFLAGS) $< -o $@
-	@"$(CC)" -c $(CFLAGS) $< -o $@
-
-$(addprefix $(OUTPUT_PATH)/,$(CPP_OBJ)): $(OUTPUT_PATH)/%.o: %.cpp
-#	@"$(CC)" -c $(CPPFLAGS) $< -o $@
-	@"$(CC)" -xc++ -c $(CPPFLAGS) $< -o $@
-
-$(addprefix $(OUTPUT_PATH)/,$(A_OBJ)): $(OUTPUT_PATH)/%.o: %.s
-	@"$(AS)" -c $(ASFLAGS) $< -o $@
-
-$(OUTPUT_LIB): $(addprefix $(OUTPUT_PATH)/, $(C_OBJ)) $(addprefix $(OUTPUT_PATH)/, $(CPP_OBJ)) $(addprefix $(OUTPUT_PATH)/, $(A_OBJ))
-	@"$(AR)" -v -r "$(OUTPUT_BIN)/$@" $^
-	@"$(NM)" "$(OUTPUT_BIN)/$@" > "$(OUTPUT_BIN)/$@.txt"
-
-
-.PHONY: clean
-clean:
-	@echo ------------------------------------------------------------------------------------
-	@echo --- Cleaning $(VARIANT) files [$(OUTPUT_PATH)$(SEP)*.o]
-	-@$(RM) $(OUTPUT_PATH) 1>NUL 2>&1
-	-@$(RM) $(OUTPUT_BIN)/$(OUTPUT_LIB) 1>NUL 2>&1
-	@echo ------------------------------------------------------------------------------------
-
diff --git a/hardware/arduino/sam/variants/arduino_due_u/build_gcc/release.mk b/hardware/arduino/sam/variants/arduino_due_u/build_gcc/release.mk
deleted file mode 100644
index 0d15157f4..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/build_gcc/release.mk
+++ /dev/null
@@ -1,25 +0,0 @@
-#
-#  Copyright (c) 2011 Arduino.  All right reserved.
-#
-#  This library is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU Lesser General Public
-#  License as published by the Free Software Foundation; either
-#  version 2.1 of the License, or (at your option) any later version.
-#
-#  This library is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
-#  See the GNU Lesser General Public License for more details.
-#
-#  You should have received a copy of the GNU Lesser General Public
-#  License along with this library; if not, write to the Free Software
-#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-
-# Optimization level
-# -O1 Optimize
-# -O2 Optimize even more
-# -O3 Optimize yet more
-# -O0 Reduce compilation time and make debugging produce the expected results
-# -Os Optimize for size
-OPTIMIZATION = -Os
diff --git a/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/gcc/arduino_due_flash.gdb b/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/gcc/arduino_due_flash.gdb
deleted file mode 100644
index c912752bc..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/gcc/arduino_due_flash.gdb
+++ /dev/null
@@ -1,31 +0,0 @@
-#*******************************************************
-#
-#  Connect to J-Link and debug application in flash.
-#
-
-# define 'reset' command
-define reset
-
-# Connect to the J-Link gdb server
-target remote localhost:2331
-# Reset the chip to get to a known state
-monitor reset
-
-# Select flash device
-monitor flash device = AT91SAM3U4E
-# Enable flash download and flash breakpoints
-monitor flash download = 1
-# Load the program
-load
-
-# Reset peripheral  (RSTC_CR)
-set *0x400e1200 = 0xA5000004
-
-# Initializing PC and stack pointer
-mon reg sp=(0x80000)
-set *0x80004 = *0x80004 & 0xFFFFFFFE
-mon reg pc=(0x80004)
-info reg
-
-# end of 'reset' command
-end
diff --git a/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/gcc/arduino_due_sram.gdb b/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/gcc/arduino_due_sram.gdb
deleted file mode 100644
index c7cc015ba..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/gcc/arduino_due_sram.gdb
+++ /dev/null
@@ -1,23 +0,0 @@
-#*************************************************
-#
-#  Connect to J-Link and debug application in sram on SAM3U
-#
-# Note:
-#     First,users should do Step1 and Step2 according to your project,
-#     then do Step3.
-
-# Step1: Connect to the J-Link gdb server
-#target remote localhost:2331
-#mon reset
-
-# Step2: Load file(eg. getting-started project)
-#load bin/basic-dhrystone-project-at91sam3u-ek-at91sam3u4-sram.elf
-#symbol-file bin/basic-dhrystone-project-at91sam3u-ek-at91sam3u4-sram.elf
-
-# Step3: Initializing PC and stack pointer
-# Perpheral reset RSTC_CR
-set *0x400e1200 = 0xA5000004
-# Modify pc value to even before writing pc register
-mon reg sp=(0x20000000)
-set *0x20000004 = *0x20000004 & 0xFFFFFFFE
-mon reg pc=(0x20000004)
diff --git a/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/iar/arduino_due_flash.mac b/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/iar/arduino_due_flash.mac
deleted file mode 100644
index 959583582..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/iar/arduino_due_flash.mac
+++ /dev/null
@@ -1,44 +0,0 @@
-// ---------------------------------------------------------
-//   ATMEL Microcontroller Software Support  -  ROUSSET  -
-// ---------------------------------------------------------
-// The software is delivered "AS IS" without warranty or
-// condition of any  kind, either express, implied or
-// statutory. This includes without limitation any warranty
-// or condition with respect to merchantability or fitness
-// for any particular purpose, or against the infringements of
-// intellectual property rights of others.
-// ---------------------------------------------------------
-//  File: at91sam3u-ek-flash.mac
-//  User setup file for CSPY debugger.
-// ---------------------------------------------------------
-__var __mac_i;
-__var __mac_pt;
-
-/*********************************************************************
-*
-*       execUserReset()
-*/
-execUserReset()
-{
-    __message "------------------------------ execUserReset ---------------------------------";
-    __message "-------------------------------Set PC Reset ----------------------------------";
-
-    __hwReset(0);
-
-    // perpheral reset RSTC_CR
-    __writeMemory32(0xA5000004,0x400e1200,"Memory");
-}
-
-/*********************************************************************
-*
-*       execUserPreload()
-*/
-execUserPreload()
-{
-    __message "------------------------------ execUserPreload ---------------------------------";
-
-    __hwReset(0);                          //* Hardware Reset: CPU is automatically halted after the reset
-
-    // perpheral reset RSTC_CR
-    __writeMemory32(0xA5000004,0x400e1200,"Memory");
-}
diff --git a/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/iar/arduino_due_sram.mac b/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/iar/arduino_due_sram.mac
deleted file mode 100644
index ba86029d3..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/debug_scripts/iar/arduino_due_sram.mac
+++ /dev/null
@@ -1,44 +0,0 @@
-// ---------------------------------------------------------
-//   ATMEL Microcontroller Software Support  -  ROUSSET  -
-// ---------------------------------------------------------
-// The software is delivered "AS IS" without warranty or
-// condition of any  kind, either express, implied or
-// statutory. This includes without limitation any warranty
-// or condition with respect to merchantability or fitness
-// for any particular purpose, or against the infringements of
-// intellectual property rights of others.
-// ---------------------------------------------------------
-//  File: at91sam3u-ek-sram.mac
-//  User setup file for CSPY debugger.
-// ---------------------------------------------------------
-__var __mac_i;
-__var __mac_pt;
-
-/*********************************************************************
-*
-*       execUserReset()
-*/
-execUserReset()
-{
-    __message "------------------------------ execUserReset ---------------------------------";
-    __message "-------------------------------Set PC Reset ----------------------------------";
-
-     //__hwReset(50);
-
-    // perpheral reset RSTC_CR
-    __writeMemory32(0xA5000004,0x400e1200,"Memory");
-}
-
-/*********************************************************************
-*
-*       execUserPreload()
-*/
-execUserPreload()
-{
-    __message "------------------------------ execUserPreload ---------------------------------";
-
-    __hwReset(0);                          //* Hardware Reset: CPU is automatically halted after the reset
-    
-    // perpheral reset RSTC_CR
-    __writeMemory32(0xA5000004,0x400e1200,"Memory");
-}
diff --git a/hardware/arduino/sam/variants/arduino_due_u/libsam_sam3u4e_gcc_rel.a b/hardware/arduino/sam/variants/arduino_due_u/libsam_sam3u4e_gcc_rel.a
deleted file mode 100644
index 6ec84cfd0..000000000
Binary files a/hardware/arduino/sam/variants/arduino_due_u/libsam_sam3u4e_gcc_rel.a and /dev/null differ
diff --git a/hardware/arduino/sam/variants/arduino_due_u/libsam_sam3u4e_gcc_rel.a.txt b/hardware/arduino/sam/variants/arduino_due_u/libsam_sam3u4e_gcc_rel.a.txt
deleted file mode 100644
index da891656a..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/libsam_sam3u4e_gcc_rel.a.txt
+++ /dev/null
@@ -1,323 +0,0 @@
-
-adc10_sam3u.o:
-00000000 T adc_check_ovr
-00000000 T adc_configure_power_save
-00000000 T adc_configure_timing
-00000000 T adc_configure_trigger
-00000000 T adc_disable_channel
-00000000 T adc_disable_interrupt
-00000000 T adc_enable_channel
-00000000 T adc_enable_interrupt
-00000000 T adc_get_actual_adc_clock
-00000000 T adc_get_channel_status
-00000000 T adc_get_interrupt_mask
-00000000 T adc_get_interrupt_status
-00000000 T adc_get_latest_value
-00000000 T adc_get_pdc_base
-00000000 T adc_get_status
-00000000 T adc_get_value
-00000000 T adc_init
-00000000 T adc_set_resolution
-00000000 T adc_start
-00000000 T adc_stop
-
-adc12_sam3u.o:
-00000000 T adc12_check_ovr
-00000000 T adc12_configure_power_save
-00000000 T adc12_configure_timing
-00000000 T adc12_configure_trigger
-00000000 T adc12_disable_channel
-00000000 T adc12_disable_differential_input
-00000000 T adc12_disable_input_offset
-00000000 T adc12_disable_interrupt
-00000000 T adc12_enable_channel
-00000000 T adc12_enable_differential_input
-00000000 T adc12_enable_input_offset
-00000000 T adc12_enable_interrupt
-00000000 T adc12_get_actual_adc_clock
-00000000 T adc12_get_channel_status
-00000000 T adc12_get_interrupt_mask
-00000000 T adc12_get_interrupt_status
-00000000 T adc12_get_latest_value
-00000000 T adc12_get_pdc_base
-00000000 T adc12_get_status
-00000000 T adc12_get_value
-00000000 T adc12_init
-00000000 T adc12_set_bias_current
-00000000 T adc12_set_input_gain
-00000000 T adc12_set_resolution
-00000000 T adc12_start
-00000000 T adc12_stop
-
-adc_sam3snxa.o:
-
-pio.o:
-00000000 T PIO_Clear
-00000000 T PIO_Configure
-00000000 T PIO_DisableInterrupt
-00000000 T PIO_Get
-00000000 T PIO_GetOutputDataStatus
-00000000 T PIO_PullUp
-00000000 T PIO_Set
-00000000 T PIO_SetDebounceFilter
-00000000 T PIO_SetInput
-00000000 T PIO_SetOutput
-00000000 T PIO_SetPeripheral
-
-pmc.o:
-00000000 T PMC_DisablePeripheral
-00000000 T PMC_EnablePeripheral
-00000000 T PMC_IsPeripheralEnabled
-
-pwmc.o:
-00000000 r C.1.6738
-00000000 t FindClockConfiguration
-00000000 T PWMC_ConfigureChannel
-00000000 T PWMC_ConfigureChannelExt
-00000000 T PWMC_ConfigureClocks
-00000000 T PWMC_ConfigureComparisonUnit
-00000000 T PWMC_ConfigureEventLineMode
-00000000 T PWMC_ConfigureSyncChannel
-00000000 T PWMC_DisableChannel
-00000000 T PWMC_DisableChannelIt
-00000000 T PWMC_DisableIt
-00000000 T PWMC_DisableOverrideOutput
-00000000 T PWMC_EnableChannel
-00000000 T PWMC_EnableChannelIt
-00000000 T PWMC_EnableFaultProtection
-00000000 T PWMC_EnableIt
-00000000 T PWMC_EnableOverrideOutput
-00000000 T PWMC_FaultClear
-00000000 T PWMC_SetDeadTime
-00000000 T PWMC_SetDutyCycle
-00000000 T PWMC_SetFaultMode
-00000000 T PWMC_SetFaultProtectionValue
-00000000 T PWMC_SetOverrideValue
-00000000 T PWMC_SetPeriod
-00000000 T PWMC_SetSyncChannelUpdatePeriod
-00000000 T PWMC_SetSyncChannelUpdateUnlock
-00000000 T PWMC_WriteBuffer
-0000002c r __FUNCTION__.5544
-00000043 r __FUNCTION__.5555
-00000059 r __FUNCTION__.5570
-00000072 r __FUNCTION__.5581
-00000087 r __FUNCTION__.5592
-00000099 r __FUNCTION__.5599
-000000aa r __FUNCTION__.5681
-000000c7 r __FUNCTION__.5687
-         U __assert_func
-
-rtc.o:
-00000000 T RTC_ClearSCCR
-00000000 T RTC_DisableIt
-00000000 T RTC_EnableIt
-00000000 T RTC_GetDate
-00000000 T RTC_GetHourMode
-00000000 T RTC_GetSR
-00000000 T RTC_GetTime
-00000000 T RTC_SetDate
-00000000 T RTC_SetDateAlarm
-00000000 T RTC_SetHourMode
-00000000 T RTC_SetTime
-00000000 T RTC_SetTimeAlarm
-00000000 r __FUNCTION__.5541
-00000010 r __FUNCTION__.5550
-0000001d r __FUNCTION__.5555
-         U __assert_func
-
-rtt.o:
-00000000 T RTT_EnableIT
-00000000 T RTT_GetStatus
-00000000 T RTT_GetTime
-00000000 T RTT_SetAlarm
-00000000 T RTT_SetPrescaler
-00000000 r __FUNCTION__.5548
-0000000d r __FUNCTION__.5556
-         U __assert_func
-
-spi.o:
-         U PMC_EnablePeripheral
-00000000 T SPI_Configure
-00000000 T SPI_ConfigureNPCS
-00000000 T SPI_Disable
-00000000 T SPI_DisableIt
-00000000 T SPI_Enable
-00000000 T SPI_EnableIt
-00000000 T SPI_GetStatus
-00000000 T SPI_IsFinished
-00000000 T SPI_Read
-00000000 T SPI_Write
-
-tc.o:
-00000000 T TC_Configure
-00000000 T TC_FindMckDivisor
-00000000 T TC_Start
-00000000 T TC_Stop
-00000000 r __FUNCTION__.5543
-0000000d r __FUNCTION__.5549
-00000016 r __FUNCTION__.5555
-         U __assert_func
-
-timetick.o:
-00000000 T GetTickCount
-00000000 T Sleep
-00000000 T TimeTick_Configure
-00000000 T TimeTick_Increment
-00000000 T Wait
-00000000 b _dwTickCount
-
-twi.o:
-00000000 T TWI_ByteReceived
-00000000 T TWI_ByteSent
-00000000 T TWI_ConfigureMaster
-00000000 T TWI_ConfigureSlave
-00000000 T TWI_DisableIt
-00000000 T TWI_EnableIt
-00000000 T TWI_GetMaskedStatus
-00000000 T TWI_GetStatus
-00000000 T TWI_ReadByte
-00000000 T TWI_SendSTOPCondition
-00000000 T TWI_StartRead
-00000000 T TWI_StartWrite
-00000000 T TWI_Stop
-00000000 T TWI_TransferComplete
-00000000 T TWI_WriteByte
-00000000 r __FUNCTION__.6126
-00000014 r __FUNCTION__.6141
-00000027 r __FUNCTION__.6145
-00000030 r __FUNCTION__.6152
-0000003e r __FUNCTION__.6156
-0000004b r __FUNCTION__.6161
-00000059 r __FUNCTION__.6169
-00000068 r __FUNCTION__.6183
-00000075 r __FUNCTION__.6188
-00000083 r __FUNCTION__.6192
-00000091 r __FUNCTION__.6197
-000000a5 r __FUNCTION__.6201
-         U __assert_func
-
-usart.o:
-00000000 T USART_Configure
-00000000 T USART_DisableIt
-00000000 T USART_EnableIt
-00000000 T USART_GetChar
-00000000 T USART_GetStatus
-00000000 T USART_IsDataAvailable
-00000000 T USART_IsRxReady
-00000000 T USART_PutChar
-00000000 T USART_Read
-00000000 T USART_ReadBuffer
-00000000 T USART_SetIrdaFilter
-00000000 T USART_SetReceiverEnabled
-00000000 T USART_SetTransmitterEnabled
-00000000 T USART_Write
-00000000 T USART_WriteBuffer
-00000000 r __FUNCTION__.5925
-         U __assert_func
-
-wdt.o:
-00000000 T WDT_Disable
-00000000 T WDT_Enable
-00000000 T WDT_GetPeriod
-00000000 T WDT_GetStatus
-00000000 T WDT_Restart
-
-exceptions.o:
-00000000 W ADC12B_IrqHandler
-00000000 W ADC_IrqHandler
-00000000 W BusFault_Handler
-00000000 W DMAC_IrqHandler
-00000000 W DebugMon_Handler
-00000000 T Dummy_Handler
-00000000 W EFC0_IrqHandler
-00000000 W EFC1_IrqHandler
-00000000 W MCI_IrqHandler
-00000000 W MemManage_Handler
-00000000 W NMI_Handler
-00000000 W PIOA_IrqHandler
-00000000 W PIOB_IrqHandler
-00000000 W PIOC_IrqHandler
-00000000 W PMC_IrqHandler
-00000000 W PWM_IrqHandler
-00000000 W PendSV_Handler
-00000000 W RSTC_IrqHandler
-00000000 W RTC_IrqHandler
-00000000 W RTT_IrqHandler
-00000000 W SMC_IrqHandler
-00000000 W SPI_IrqHandler
-00000000 W SSC_IrqHandler
-00000000 W SUPC_IrqHandler
-00000000 W SVC_Handler
-00000000 W SysTick_Handler
-00000000 W TC0_IrqHandler
-00000000 W TC1_IrqHandler
-00000000 W TC2_IrqHandler
-00000000 W TWI0_IrqHandler
-00000000 W TWI1_IrqHandler
-00000000 W UART_IrqHandler
-00000000 W UDPHS_IrqHandler
-00000000 W USART0_IrqHandler
-00000000 W USART1_IrqHandler
-00000000 W USART2_IrqHandler
-00000000 W USART3_IrqHandler
-00000000 W UsageFault_Handler
-00000000 W WDT_IrqHandler
-
-system_sam3u.o:
-00000000 D SystemCoreClock
-00000000 T SystemCoreClockUpdate
-00000000 T SystemInit
-00000000 T system_init_flash_and_watchdog
-
-startup_sam3u.o:
-         U ADC12B_IrqHandler
-         U ADC_IrqHandler
-         U BusFault_Handler
-         U DMAC_IrqHandler
-         U DebugMon_Handler
-         U Dummy_Handler
-         U EFC0_IrqHandler
-         U EFC1_IrqHandler
-         U HardFault_Handler
-         U MCI_IrqHandler
-         U MemManage_Handler
-         U NMI_Handler
-         U PIOA_IrqHandler
-         U PIOB_IrqHandler
-         U PIOC_IrqHandler
-         U PMC_IrqHandler
-         U PWM_IrqHandler
-         U PendSV_Handler
-         U RSTC_IrqHandler
-         U RTC_IrqHandler
-         U RTT_IrqHandler
-00000000 T Reset_Handler
-         U SMC_IrqHandler
-         U SPI_IrqHandler
-         U SSC_IrqHandler
-         U SUPC_IrqHandler
-         U SVC_Handler
-         U SysTick_Handler
-         U TC0_IrqHandler
-         U TC1_IrqHandler
-         U TC2_IrqHandler
-         U TWI0_IrqHandler
-         U TWI1_IrqHandler
-         U UART_IrqHandler
-         U UDPHS_IrqHandler
-         U USART0_IrqHandler
-         U USART1_IrqHandler
-         U USART2_IrqHandler
-         U USART3_IrqHandler
-         U UsageFault_Handler
-         U WDT_IrqHandler
-         U __libc_init_array
-         U _erelocate
-         U _estack
-         U _etext
-         U _ezero
-         U _sfixed
-         U _srelocate
-         U _szero
-00000000 D exception_table
-         U main
diff --git a/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/gcc/flash.ld b/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/gcc/flash.ld
deleted file mode 100644
index c79e630a5..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/gcc/flash.ld
+++ /dev/null
@@ -1,150 +0,0 @@
-/* ----------------------------------------------------------------------------
- *         ATMEL Microcontroller Software Support
- * ----------------------------------------------------------------------------
- * Copyright (c) 2009, Atmel Corporation
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * - Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the disclaimer below.
- *
- * Atmel's name may not be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * ----------------------------------------------------------------------------
- */
-
-/*------------------------------------------------------------------------------
- *      Linker script for running in internal FLASH on the SAM3U4
- *----------------------------------------------------------------------------*/
-
-OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
-OUTPUT_ARCH(arm)
-SEARCH_DIR(.)
-
-/* Memory Spaces Definitions */
-MEMORY
-{
-	flash0 (W!RX) : ORIGIN = 0x00080000, LENGTH = 0x00020000 /* Flash0, 128K */
-	flash1 (W!RX) : ORIGIN = 0x00100000, LENGTH = 0x00020000 /* Flash1, 128K */
-	sram0  (W!RX) : ORIGIN = 0x20000000, LENGTH = 0x00008000 /* Sram0, 32K */
-	sram1  (W!RX) : ORIGIN = 0x20080000, LENGTH = 0x00004000 /* Sram1, 16K */
-	rom (rx)    : ORIGIN = ORIGIN(flash1)-LENGTH(flash0), LENGTH = LENGTH(flash0)+LENGTH(flash1) /* Flash, 256K */
-	ram (rwx)   : ORIGIN = ORIGIN( sram1)-LENGTH( sram0), LENGTH = LENGTH( sram0)+LENGTH( sram1) /* sram, 48K */
-}
-
-/* The stack size used by the application. NOTE: you need to adjust  */
-STACK_SIZE = 0x2000;
-
-/* Section Definitions */ 
-SECTIONS 
-{ 
-    .text : 
-    { 
-        . = ALIGN(4);
-        _sfixed = .;
-        KEEP(*(.vectors .vectors.*))
-        *(.text .text.* .gnu.linkonce.t.*)
-        *(.glue_7t) *(.glue_7)
-        *(.rodata .rodata* .gnu.linkonce.r.*)
-        *(.ARM.extab* .gnu.linkonce.armextab.*)
-
-        /* Support C constructors, and C destructors in both user code
-           and the C library. This also provides support for C++ code. */
-        . = ALIGN(4);
-        KEEP(*(.init))
-        . = ALIGN(4);
-        __preinit_array_start = .;
-        KEEP (*(.preinit_array))
-        __preinit_array_end = .;
-
-        . = ALIGN(4);
-        __init_array_start = .;
-        KEEP (*(SORT(.init_array.*)))
-        KEEP (*(.init_array))
-        __init_array_end = .;
-
-        . = ALIGN(0x4);
-        KEEP (*crtbegin.o(.ctors))
-        KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
-        KEEP (*(SORT(.ctors.*)))
-        KEEP (*crtend.o(.ctors))
-
-        . = ALIGN(4);
-        KEEP(*(.fini))
-
-        . = ALIGN(4);
-        __fini_array_start = .;
-        KEEP (*(.fini_array))
-        KEEP (*(SORT(.fini_array.*)))
-        __fini_array_end = .;
-
-        KEEP (*crtbegin.o(.dtors))
-        KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
-        KEEP (*(SORT(.dtors.*)))
-        KEEP (*crtend.o(.dtors))
-
-        . = ALIGN(4);
-        _efixed = .;            /* End of text section */
-    } > flash0
-
-    /* .ARM.exidx is sorted, so has to go in its own output section.  */
-    PROVIDE_HIDDEN (__exidx_start = .);
-    .ARM.exidx :
-    {
-      *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-    } > flash0
-    PROVIDE_HIDDEN (__exidx_end = .);
-
-    . = ALIGN(4); 
-    _etext = .;
-
-    .relocate : AT (_etext)
-    {
-        . = ALIGN(4);
-        _srelocate = .;
-        *(.ramfunc .ramfunc.*);
-        *(.data .data.*);
-        . = ALIGN(4);
-        _erelocate = .;
-    } > sram0
-
-    /* .bss section which is used for uninitialized data */ 
-    .bss (NOLOAD) :
-    { 
-        . = ALIGN(4);
-        _sbss = . ;
-        _szero = .;
-        *(.bss .bss.*)
-        *(COMMON)
-        . = ALIGN(4);
-        _ebss = . ;
-        _ezero = .;
-    } > sram0
-
-    /* stack section */
-    .stack (NOLOAD):
-    {
-        . = ALIGN(8);
-         _sstack = .;
-        . = . + STACK_SIZE;
-        . = ALIGN(8);
-        _estack = .;
-    } > sram1
-
-    . = ALIGN(4); 
-    _end = . ; 
-}
diff --git a/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/gcc/sram.ld b/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/gcc/sram.ld
deleted file mode 100644
index c8e21ad30..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/gcc/sram.ld
+++ /dev/null
@@ -1,150 +0,0 @@
-/* ----------------------------------------------------------------------------
- *         ATMEL Microcontroller Software Support
- * ----------------------------------------------------------------------------
- * Copyright (c) 2009, Atmel Corporation
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * - Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the disclaimer below.
- *
- * Atmel's name may not be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * ----------------------------------------------------------------------------
- */
-
-/*------------------------------------------------------------------------------
- *      Linker script for running in internal SRAM on the SAM3U4
- *----------------------------------------------------------------------------*/
-
-OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
-OUTPUT_ARCH(arm)
-SEARCH_DIR(.)
-
-/* Memory Spaces Definitions */
-MEMORY
-{
-	flash0 (W!RX) : ORIGIN = 0x00080000, LENGTH = 0x00020000 /* Flash0, 128K */
-	flash1 (W!RX) : ORIGIN = 0x00100000, LENGTH = 0x00020000 /* Flash1, 128K */
-	sram0  (W!RX) : ORIGIN = 0x20000000, LENGTH = 0x00008000 /* Sram0, 32K */
-	sram1  (W!RX) : ORIGIN = 0x20080000, LENGTH = 0x00004000 /* Sram1, 16K */
-	rom (rx)    : ORIGIN = ORIGIN(flash1)-LENGTH(flash0), LENGTH = LENGTH(flash0)+LENGTH(flash1) /* Flash, 256K */
-	ram (rwx)   : ORIGIN = ORIGIN( sram1)-LENGTH( sram0), LENGTH = LENGTH( sram0)+LENGTH( sram1) /* sram, 48K */
-}
-
-/* The stack size used by the application. NOTE: you need to adjust  */
-STACK_SIZE = 0x800;
-
-/* Section Definitions */ 
-SECTIONS 
-{ 
-    .text : 
-    { 
-        . = ALIGN(4);
-        _sfixed = .;
-        KEEP(*(.vectors .vectors.*))
-        *(.text .text.* .gnu.linkonce.t.*)
-        *(.glue_7t) *(.glue_7)
-        *(.rodata .rodata* .gnu.linkonce.r.*)
-        *(.ARM.extab* .gnu.linkonce.armextab.*)
-
-        /* Support C constructors, and C destructors in both user code
-           and the C library. This also provides support for C++ code. */
-        . = ALIGN(4);
-        KEEP(*(.init))
-        . = ALIGN(4);
-        __preinit_array_start = .;
-        KEEP (*(.preinit_array))
-        __preinit_array_end = .;
-
-        . = ALIGN(4);
-        __init_array_start = .;
-        KEEP (*(SORT(.init_array.*)))
-        KEEP (*(.init_array))
-        __init_array_end = .;
-
-        . = ALIGN(0x4);
-        KEEP (*crtbegin.o(.ctors))
-        KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
-        KEEP (*(SORT(.ctors.*)))
-        KEEP (*crtend.o(.ctors))
-
-        . = ALIGN(4);
-        KEEP(*(.fini))
-
-        . = ALIGN(4);
-        __fini_array_start = .;
-        KEEP (*(.fini_array))
-        KEEP (*(SORT(.fini_array.*)))
-        __fini_array_end = .;
-
-        KEEP (*crtbegin.o(.dtors))
-        KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
-        KEEP (*(SORT(.dtors.*)))
-        KEEP (*crtend.o(.dtors))
-
-        . = ALIGN(4);
-        _efixed = .;            /* End of text section */
-    } > sram0
-
-    . = ALIGN(4); 
-    _etext = .;
-
-    .relocate : AT (_etext)
-    {
-        . = ALIGN(4);
-        _srelocate = .;
-        *(.ramfunc .ramfunc.*);
-        *(.data .data.*);
-        . = ALIGN(4);
-        _erelocate = .;
-    } > sram1
-
-    /* .bss section which is used for uninitialized data */ 
-    .bss (NOLOAD) :
-    { 
-        . = ALIGN(4);
-        _sbss = . ;
-        _szero = .;
-        *(.bss .bss.*)
-        *(COMMON)
-        . = ALIGN(4);
-        _ebss = . ;
-        _ezero = .;
-    } > sram1
-
-    /* stack section */
-    .stack (NOLOAD):
-    {
-        . = ALIGN(8);
-         _sstack = .;
-        . = . + STACK_SIZE;
-        . = ALIGN(8);
-        _estack = .;
-    } > sram1
-
-    /* .ARM.exidx is sorted, so has to go in its own output section.  */
-    PROVIDE_HIDDEN (__exidx_start = .);
-    .ARM.exidx :
-    {
-      *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-    } > sram1
-    PROVIDE_HIDDEN (__exidx_end = .);
-
-    . = ALIGN(4); 
-    _end = . ; 
-}
diff --git a/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/iar/flash.icf b/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/iar/flash.icf
deleted file mode 100644
index 956230fbd..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/iar/flash.icf
+++ /dev/null
@@ -1,49 +0,0 @@
-/*###ICF### Section handled by ICF editor, don't touch! ****/
-/*-Editor annotation file-*/
-/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\a_v1_0.xml" */
-/*-Vector table start*/
-define symbol __ICFEDIT_vector_start__ = 0x00080000; /*Add for CMSIS*/
-/*-Memory Regions-*/
-define symbol __ICFEDIT_region_RAM0_start__  = 0x20000000;
-define symbol __ICFEDIT_region_RAM0_end__    = 0x20007FFF;
-define symbol __ICFEDIT_region_RAM1_start__  = 0x20080000;
-define symbol __ICFEDIT_region_RAM1_end__    = 0x20083FFF;
-define symbol __ICFEDIT_region_ROM0_start__  = 0x00080000;
-define symbol __ICFEDIT_region_ROM0_end__    = 0x0009FFFF;
-define symbol __ICFEDIT_region_ROM1_start__  = 0x00100000;
-define symbol __ICFEDIT_region_ROM1_end__    = 0x0011FFFF;
-/*-Sizes-*/
-/*define symbol __ICFEDIT_size_cstack__        = 0x1000;*//*for nandflash*/
-define symbol __ICFEDIT_size_cstack__        = 0x2000;
-define symbol __ICFEDIT_size_heap__          = 0x200;
-/*-Specials-*/
-/*define symbol __ICFEDIT_region_RAM_VECT_start__ = __ICFEDIT_region_RAM0_start__;*/ /*Referenced for CMSIS*/
-/*define symbol __ICFEDIT_size_vectors__          = 0x100;*/ /*Referenced for CMSIS*/
-/*-Exports-*/
-/*export symbol __ICFEDIT_region_RAM_VECT_start__;*/
-export symbol __ICFEDIT_vector_start__; /*Add for CMSIS*/
-/**** End of ICF editor section. ###ICF###*/
-
-define memory mem with size   = 4G;
-/*define region RAM_VECT_region = mem:[from __ICFEDIT_region_RAM_VECT_start__ size __ICFEDIT_size_vectors__];*/ /*Referenced for CMSIS*/
-/*define region RAM0_region     = mem:[from __ICFEDIT_region_RAM0_start__+__ICFEDIT_size_vectors__ to __ICFEDIT_region_RAM0_end__];*/ /*Referenced for CMSIS*/
-define region RAM0_region     = mem:[from __ICFEDIT_region_RAM0_start__ to __ICFEDIT_region_RAM0_end__];
-define region RAM1_region     = mem:[from __ICFEDIT_region_RAM1_start__ to __ICFEDIT_region_RAM1_end__];
-/*define region RAM_region      = mem:[from __ICFEDIT_region_RAM0_start__+__ICFEDIT_size_vectors__ to __ICFEDIT_region_RAM0_end__] |
-                                mem:[from __ICFEDIT_region_RAM1_start__ to __ICFEDIT_region_RAM1_end__];*/ /*Referenced for CMSIS*/
-define region ROM0_region     = mem:[from __ICFEDIT_region_ROM0_start__ to __ICFEDIT_region_ROM0_end__];
-define region ROM1_region     = mem:[from __ICFEDIT_region_ROM1_start__ to __ICFEDIT_region_ROM1_end__];
-
-/*define block RamVect   with alignment = 8, size = __ICFEDIT_size_vectors__  { };*/
-define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
-
-initialize by copy { readwrite };
-do not initialize  { section .noinit };
-
-/*place at start of ROM0_region { readonly section .vectors };*/ /*Referenced for CMSIS*/
-place at address mem:__ICFEDIT_vector_start__ { readonly section .intvec }; /*Add for CMSIS*/
-place in ROM0_region          { readonly };
-place in RAM0_region          { readwrite, block HEAP };
-place in RAM1_region          { block CSTACK }; /* for nandflash*/
-/*place in RAM_VECT_region      { block RamVect };*/ /*Referenced for CMSIS*/
\ No newline at end of file
diff --git a/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/iar/sram.icf b/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/iar/sram.icf
deleted file mode 100644
index d7d33537a..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/linker_scripts/iar/sram.icf
+++ /dev/null
@@ -1,33 +0,0 @@
-/*###ICF### Section handled by ICF editor, don't touch! ****/
-/*-Editor annotation file-*/
-/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\a_v1_0.xml" */
-/*-Vector table start*/
-define symbol __ICFEDIT_vector_start__ = 0x20000000;
-/*-Memory Regions-*/
-define symbol __ICFEDIT_region_RAM0_start__  = 0x20000000;
-define symbol __ICFEDIT_region_RAM0_end__    = 0x20007FFF;
-define symbol __ICFEDIT_region_RAM1_start__  = 0x20080000;
-define symbol __ICFEDIT_region_RAM1_end__    = 0x20083FFF;
-/*-Sizes-*/
-define symbol __ICFEDIT_size_cstack__        = 0x900;
-define symbol __ICFEDIT_size_heap__          = 0x200;
-/*-Exports-*/
-export symbol __ICFEDIT_vector_start__;
-/**** End of ICF editor section. ###ICF###*/
-
-define memory mem with size   = 4G;
-define region RAM0_region     = mem:[from __ICFEDIT_region_RAM0_start__ to __ICFEDIT_region_RAM0_end__];
-define region RAM1_region     = mem:[from __ICFEDIT_region_RAM1_start__ to __ICFEDIT_region_RAM1_end__];
-/*define region RAM_region      = mem:[from __ICFEDIT_region_RAM0_start__+__ICFEDIT_size_vectors__ to __ICFEDIT_region_RAM0_end__] |
-                                mem:[from __ICFEDIT_region_RAM1_start__ to __ICFEDIT_region_RAM1_end__];*/
-
-/* define block RamVect   with alignment = 8, size = __ICFEDIT_size_vectors__  { }; */
-define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
-
-initialize by copy { readwrite };
-do not initialize  { section .noinit };
-
-place at address mem:__ICFEDIT_vector_start__ { readonly section .intvec };
-place in RAM0_region          { readonly };
-place in RAM1_region          { readwrite, block CSTACK, block HEAP };
diff --git a/hardware/arduino/sam/variants/arduino_due_u/pins.xls b/hardware/arduino/sam/variants/arduino_due_u/pins.xls
deleted file mode 100644
index d105ee475..000000000
Binary files a/hardware/arduino/sam/variants/arduino_due_u/pins.xls and /dev/null differ
diff --git a/hardware/arduino/sam/variants/arduino_due_u/pins_arduino.h b/hardware/arduino/sam/variants/arduino_due_u/pins_arduino.h
deleted file mode 100644
index 4e279aa7b..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/pins_arduino.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
-  Copyright (c) 2011 Arduino.  All right reserved.
-
-  This library is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Lesser General Public
-  License as published by the Free Software Foundation; either
-  version 2.1 of the License, or (at your option) any later version.
-
-  This library is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public
-  License along with this library; if not, write to the Free Software
-  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-// API compatibility
-#include "variant.h"
-
diff --git a/hardware/arduino/sam/variants/arduino_due_u/variant.cpp b/hardware/arduino/sam/variants/arduino_due_u/variant.cpp
deleted file mode 100644
index 4ccf4575b..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/variant.cpp
+++ /dev/null
@@ -1,383 +0,0 @@
-/*
-  Copyright (c) 2011 Arduino.  All right reserved.
-
-  This library is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Lesser General Public
-  License as published by the Free Software Foundation; either
-  version 2.1 of the License, or (at your option) any later version.
-
-  This library is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public
-  License along with this library; if not, write to the Free Software
-  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-#include "variant.h"
-
-/*
- * DUE Board pin   |  PORT
- * ----------------+--------
- *   0   RX0       |  PA11
- *   1   TX0       |  PA12
- *   2       PWML3 |  PC9
- *   3       PWMH3 |  PB16
- *   4       NPCS0 |  PA16
- *   5       TIOA2 |  PA30
- *   6       PWMH2 |  PA6
- *   7       PWML2 |  PC8
- *   8       PWML1 |  PC7
- *   9       PWMH1 |  PA5
- *  10       TIOA0 |  PA1
- *  11       PWMH0 |  PA4
- *  12       PWML0 |  PC6
- *  13             |  PC21
- *  14   TX3       |  PA22
- *  15   RX3       |  PA23
- *  16   TX2       |  PA20
- *  17   RX2       |  PA21
- *  18   TX1       |  PA18
- *  19   RX1       |  PA19
- *  20   SDA       |  PA24
- *  21   SCL       |  PA25
- *  22             |  PC3
- *  23             |  PC2
- *  24             |  PC1
- *  25             |  PC0
- *  26             |  PB28
- *  27             |  PB27
- *  28             |  PB26
- *  29             |  PB25
- *  30             |  PB24
- *  31             |  PB23
- *  32             |  PB22
- *  33             |  PB21
- *  34             |  PB20
- *  35             |  PB19
- *  36             |  PB18
- *  37             |  PB17
- *  38             |  PA28
- *  39             |  PA29
- *  40             |  PC22
- *  41             |  PA31
- *  42             |  PC23
- *  43             |  PB0
- *  44             |  PC24
- *  45             |  PB1
- *  46             |  PC25
- *  47             |  PB2
- *  48             |  PC26
- *  49             |  PB11
- *  50             |  PB12
- *  51             |  PB13
- *  52             |  PC27
- *  53             |  PA27
- *  A0             |  PB5
- *  A1             |  PB6
- *  A2             |  PB7
- *  A3             |  PB8
- *  A4             |  PC28
- *  A5             |  PC29
- *  A6             |  PC30
- *  A7             |  PC31
- *  A8             |  PB3
- *  A9             |  PB4
- * A10             |  PC15
- * A11             |  PC16
- * A12             |  PC17
- * A13             |  PC18
- * A14             |  This pin is DAC0 output of LTC1661CMS8
- * A15             |  This pin is DAC1 output of LTC1661CMS8
- *      SDA1       |  PA9
- *      SCL1       |  PA10
- *
- *
- * LTC1661CMS8 pin |  PORT
- * ----------------+--------
- * #CS/LD          |  PB9
- *  SCK            |  PB10
- *  DIN            |  PB14
- *
- *
- * LEDs            |  PORT
- * ----------------+--------
- * "TX"            |  PC19
- * "RX"            |  PC14
- * "L"             |  PC21
- */
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Pins descriptions
- */
-extern const PinDescription g_APinDescription[]=
-{
-  // 0 .. 53 - Digital pins
-  // ----------------------
-  // 0/1 - UART (Serial)
-  { PIOA, PIO_PA11A_URXD,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT,  PIN_ATTR_DIGITAL,                 NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // URXD
-  { PIOA, PIO_PA12A_UTXD,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT,  PIN_ATTR_DIGITAL,                 NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // UTXD
-
-  // 2
-  { PIOC, PIO_PC9B_PWML3,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH3, NO_TC    }, // PWML3
-  { PIOB, PIO_PB16B_PWMH3,   ID_PIOB, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH3, NO_TC    }, // PWMH3
-  { PIOC, PIO_PA16A_NPCS0,   ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT,  PIN_ATTR_DIGITAL,                 NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // NPCS0
-
-  // 5
-  { PIOA, PIO_PA30B_TIOA2,   ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_TIMER), NO_ADC, NO_ADC, NO_PWM,  TC0_CHA2 }, // TIOA2
-  { PIOA, PIO_PA6B_PWMH2,    ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH2, NO_TC    }, // PWMH2
-  { PIOC, PIO_PC8B_PWML2,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH2, NO_TC    }, // PWML2
-  { PIOC, PIO_PC7B_PWML1,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH1, NO_TC    }, // PWML1
-  { PIOA, PIO_PA5B_PWMH1,    ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH1, NO_TC    }, // PWMH1
-  // 10
-  { PIOA, PIO_PA1,           ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_TIMER), NO_ADC, NO_ADC, NO_PWM,  TC0_CHA0 }, // TIOA0
-  { PIOA, PIO_PA4B_PWMH0,    ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH0, NO_TC    }, // PWMH0
-  { PIOC, PIO_PC6B_PWML0,    ID_PIOC, PIO_PERIPH_B, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM),   NO_ADC, NO_ADC, PWM_CH0, NO_TC    }, // PWML0
-
-  // 13 - AMBER LED
-  { PIOC, PIO_PC21,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 13
-
-  // 14/15 - USART2 (Serial4)
-  { PIOA, PIO_PA22A_TXD2,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TXD2
-  { PIOA, PIO_PA23A_RXD2,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // RXD2
-
-  // 16/17 - USART1 (Serial3)
-  { PIOA, PIO_PA20A_TXD1,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TXD1
-  { PIOA, PIO_PA21A_RXD1,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // RXD1
-
-  // 18/19 - USART0 (Serial2)
-  { PIOA, PIO_PA18A_TXD0,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TXD0
-  { PIOA, PIO_PA19A_RXD0,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // RXD0
-
-  // 20/21 - TWI1
-  { PIOA, PIO_PA24A_TWD1,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TWD1 - SDA0
-  { PIOA, PIO_PA25A_TWCK1,   ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TWCK1 - SCL0
-
-  // 22
-  { PIOC, PIO_PC3,           ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 22
-  { PIOC, PIO_PC2,           ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 23
-  { PIOC, PIO_PC1,           ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 24
-  { PIOC, PIO_PC0,           ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 25
-
-  // 26
-  { PIOB, PIO_PB28,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 26
-  { PIOB, PIO_PB27,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 27
-  { PIOB, PIO_PB26,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 28
-  { PIOB, PIO_PB25,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 29
-
-  // 30
-  { PIOB, PIO_PB24,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 30
-  { PIOB, PIO_PB23,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 31
-  { PIOB, PIO_PB22,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 32
-  { PIOB, PIO_PB21,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 33
-
-  // 34
-  { PIOB, PIO_PB20,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 34
-  { PIOB, PIO_PB19,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 35
-  { PIOB, PIO_PB18,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 36
-  { PIOB, PIO_PB17,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 37
-
-  // 38
-  { PIOA, PIO_PA28,          ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 38
-  { PIOA, PIO_PA29,          ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 39
-  { PIOC, PIO_PC22,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 40
-  { PIOA, PIO_PA31,          ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 41
-
-  // 42
-  { PIOC, PIO_PC23,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 42
-  { PIOB, PIO_PB0 ,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 43
-  { PIOC, PIO_PC24,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 44
-  { PIOB, PIO_PB1 ,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 45
-
-  // 46
-  { PIOC, PIO_PC25,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 46
-  { PIOB, PIO_PB2 ,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 47
-  { PIOC, PIO_PC26,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 48
-  { PIOB, PIO_PB11,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 49
-
-  // 50
-  { PIOB, PIO_PB12,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 50
-  { PIOB, PIO_PB13,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 51
-  { PIOC, PIO_PC27,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 52
-  { PIOA, PIO_PA27,          ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // PIN 53
-
-  // 54 .. 67 - Analog pins
-  // ----------------------
-  { PIOB, PIO_PB5X1_AD0,     ID_PIOB, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC0,   ADC0,   NO_PWM,  NO_TC    }, // AD0
-  { PIOB, PIO_PB6X1_AD1,     ID_PIOB, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC1,   ADC1,   NO_PWM,  NO_TC    }, // AD1
-  { PIOB, PIO_PB7X1_AD2,     ID_PIOB, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC2,   ADC2,   NO_PWM,  NO_TC    }, // AD2
-  { PIOB, PIO_PB8X1_AD3,     ID_PIOB, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC3,   ADC3,   NO_PWM,  NO_TC    }, // AD3
-  // 58
-  { PIOC, PIO_PC28X1_AD4,    ID_PIOC, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC4,   ADC4,   NO_PWM,  NO_TC    }, // AD4
-  { PIOC, PIO_PC29X1_AD5,    ID_PIOC, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC5,   ADC5,   NO_PWM,  NO_TC    }, // AD5
-  { PIOC, PIO_PC30X1_AD6,    ID_PIOC, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC6,   ADC6,   NO_PWM,  NO_TC    }, // AD6
-  { PIOC, PIO_PC31X1_AD7,    ID_PIOC, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC7,   ADC7,   NO_PWM,  NO_TC    }, // AD7
-  // 62
-  { PIOB, PIO_PB3X1_AD12B2,  ID_PIOB, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC8,   ADC2,   NO_PWM,  NO_TC    }, // AD8
-  { PIOB, PIO_PB4X1_AD12B3,  ID_PIOB, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC9,   ADC3,   NO_PWM,  NO_TC    }, // AD9
-  { PIOC, PIO_PC15X1_AD12B4, ID_PIOC, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC10,  ADC4,   NO_PWM,  NO_TC    }, // AD10
-  { PIOC, PIO_PC16X1_AD12B5, ID_PIOC, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC11,  ADC5,   NO_PWM,  NO_TC    }, // AD11
-  // 66
-  { PIOC, PIO_PC17X1_AD12B6, ID_PIOC, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC12,  ADC6,   NO_PWM,  NO_TC    }, // AD12
-  { PIOC, PIO_PC18X1_AD12B7, ID_PIOC, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC13,  ADC7,   NO_PWM,  NO_TC    }, // AD13
-
-  // 68/69 - TWI0
-  { PIOA, PIO_PA9A_TWD0,     ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TWD0 - SDA1
-  { PIOA, PIO_PA10A_TWCK0,   ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // TWCK0 - SCL1
-
-  // 70/71/72 - External DAC
-  { PIOB, PIO_PB9,           ID_PIOB, PIO_OUTPUT_1, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // DAC-CS
-  { PIOB, PIO_PB10,          ID_PIOB, PIO_OUTPUT_1, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // DAC-SCK
-  { PIOB, PIO_PB14,          ID_PIOB, PIO_OUTPUT_1, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // DAC-DIN
-
-  // 73/74 - LEDs
-  { PIOC, PIO_PC14,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // LED AMBER RXL
-  { PIOC, PIO_PC19,          ID_PIOC, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // LED AMBER TXL
-
-  // 75/76/77 - SPI
-  { PIOA, PIO_PA13A_MISO,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // MISO
-  { PIOA, PIO_PA14A_MOSI,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // MOSI
-  { PIOA, PIO_PA15A_SPCK,    ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NO_PWM,  NO_TC    }, // SPCK
-
-  // 78 .. 83 - "All pins" masks
-
-  // 78 - TWI0 all pins
-  { PIOA, PIO_PA9A_TWD0|PIO_PA10A_TWCK0, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 79 - TWI1 all pins
-  { PIOA, PIO_PA24A_TWD1|PIO_PA25A_TWCK1, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 80 - UART (Serial) all pins
-  { PIOA, PIO_PA11A_URXD|PIO_PA12A_UTXD, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 81 - USART0 (Serial2) all pins
-  { PIOA, PIO_PA19A_RXD0|PIO_PA18A_TXD0, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 82 - USART1 (Serial3) all pins
-  { PIOA, PIO_PA21A_RXD1|PIO_PA20A_TXD1, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-  // 83 - USART2 (Serial4) all pins
-  { PIOA, PIO_PA23A_RXD2|PIO_PA22A_TXD2, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
-
-  // END
-  { NULL, 0, 0, PIO_NOT_A_PIN, PIO_DEFAULT, 0, NO_ADC, NO_ADC, NO_PWM, NO_TC }
-} ;
-
-#ifdef __cplusplus
-}
-#endif
-
-/*
- * UART objects
- */
-RingBuffer rx_buffer1 ;
-
-UARTClass Serial1( UART, UART_IRQn, ID_UART, &rx_buffer1 ) ;
-
-// IT handlers
-void UART_Handler(void)
-{
-  Serial1.IrqHandler() ;
-}
-
-// ----------------------------------------------------------------------------
-/*
- * USART objects
- */
-RingBuffer rx_buffer2 ;
-RingBuffer rx_buffer3 ;
-RingBuffer rx_buffer4 ;
-
-USARTClass Serial2( USART0, USART0_IRQn, ID_USART0, &rx_buffer2 ) ;
-USARTClass Serial3( USART1, USART1_IRQn, ID_USART1, &rx_buffer3 ) ;
-USARTClass Serial4( USART2, USART2_IRQn, ID_USART2, &rx_buffer4 ) ;
-
-// IT handlers
-void USART0_Handler( void )
-{
-  Serial2.IrqHandler() ;
-}
-
-void USART1_Handler( void )
-{
-  Serial3.IrqHandler() ;
-}
-
-void USART2_Handler( void )
-{
-  Serial4.IrqHandler() ;
-}
-
-// ----------------------------------------------------------------------------
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- *
- */
-extern void init( void )
-{
-  SystemInit() ;
-
-  // Set Systick to 1ms interval, common to all SAM3 variants
-  if ( SysTick_Config( SystemCoreClock / 1000 ) )
-  {
-    // Capture error
-    while ( 1 ) ;
-  }
-
-  // Disable watchdog, common to all SAM variants
-  WDT_Disable( WDT ) ;
-
-  // Initialize Serial port UART, common to all SAM3 variants
-  PIO_Configure(
-    g_APinDescription[PINS_UART].pPort,
-    g_APinDescription[PINS_UART].ulPinType,
-    g_APinDescription[PINS_UART].ulPin,
-    g_APinDescription[PINS_UART].ulPinConfiguration);
-
-  // Initialize Serial ports USART
-  PIO_Configure(
-    g_APinDescription[PINS_USART0].pPort,
-    g_APinDescription[PINS_USART0].ulPinType,
-    g_APinDescription[PINS_USART0].ulPin,
-    g_APinDescription[PINS_USART0].ulPinConfiguration);
-  PIO_Configure(
-    g_APinDescription[PINS_USART1].pPort,
-    g_APinDescription[PINS_USART1].ulPinType,
-    g_APinDescription[PINS_USART1].ulPin,
-    g_APinDescription[PINS_USART1].ulPinConfiguration);
-  PIO_Configure(
-    g_APinDescription[PINS_USART2].pPort,
-    g_APinDescription[PINS_USART2].ulPinType,
-    g_APinDescription[PINS_USART2].ulPin,
-    g_APinDescription[PINS_USART2].ulPinConfiguration);
-
-  // Initialize 10bit Analog Controller
-  PMC_EnablePeripheral( ID_ADC ) ;
-  adc_init( ADC, SystemCoreClock, ADC_FREQ_MAX, ADC_STARTUP ) ;
-  adc_configure_timing( ADC, 15 ) ;
-  adc_configure_trigger( ADC, ADC_TRIG_SW ) ;
-  adc_disable_interrupt( ADC, 0xFFFFFFFF ) ; /* Disable all adc interrupt. */
-  adc_disable_channel( ADC, ADC_ALL_CHANNEL ) ;
-
-  // Initialize 12bit Analog Controller
-  PMC_EnablePeripheral( ID_ADC12B ) ;
-  adc12_init( ADC12B, SystemCoreClock, ADC12_FREQ_MAX, ADC12_STARTUP_FAST, 1 ) ;
-  adc12_configure_timing( ADC12B, 15 ) ;
-  adc12_configure_trigger( ADC12B, ADC_TRIG_SW ) ;
-  adc12_disable_interrupt( ADC12B, 0xFFFFFFFF ) ; /* Disable all adc interrupt. */
-  adc12_disable_channel( ADC12B, ADC_ALL_CHANNEL ) ;
-
-  // Initialize analogOutput module
-  analogOutputInit();
-}
-
-#ifdef __cplusplus
-}
-#endif
-
diff --git a/hardware/arduino/sam/variants/arduino_due_u/variant.h b/hardware/arduino/sam/variants/arduino_due_u/variant.h
deleted file mode 100644
index 7aac2b9b2..000000000
--- a/hardware/arduino/sam/variants/arduino_due_u/variant.h
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
-  Copyright (c) 2011 Arduino.  All right reserved.
-
-  This library is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Lesser General Public
-  License as published by the Free Software Foundation; either
-  version 2.1 of the License, or (at your option) any later version.
-
-  This library is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public
-  License along with this library; if not, write to the Free Software
-  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-#ifndef _VARIANT_ARDUINO_DUE_U_
-#define _VARIANT_ARDUINO_DUE_U_
-
-/*----------------------------------------------------------------------------
- *        Headers
- *----------------------------------------------------------------------------*/
-
-// We have native USB on this variant
-//#define USBCON
-
-#include "Arduino.h"
-#ifdef __cplusplus
-#include "UARTClass.h"
-#include "USARTClass.h"
-#endif
-
-#ifdef __cplusplus
-extern "C"{
-#endif // __cplusplus
-
-/**
- * Libc porting layers
- */
-#if defined (  __GNUC__  ) /* GCC CS3 */
-#    include <syscalls.h> /** RedHat Newlib minimal stub */
-#endif
-
-/*----------------------------------------------------------------------------
- *        Definitions
- *----------------------------------------------------------------------------*/
-
-/*----------------------------------------------------------------------------*/
-
-#define ArduinoDueU_DevEd
-
-/** Name of the board */
-#define VARIANT_NAME		"Arduino_DueU_Dev_Ed"
-
-/** Frequency of the board main oscillator */
-#define VARIANT_MAINOSC		12000000
-
-/** Master clock frequency */
-#define VARIANT_MCK			96000000
-
-/*----------------------------------------------------------------------------
- *        Pins
- *----------------------------------------------------------------------------*/
-
-// Number of pins defined in PinDescription array
-#define PINS_COUNT           (84u)
-
-// LEDs
-#define PIN_LED_13           (13u)
-#define PIN_LED_RXL          (73u)
-#define PIN_LED_TXL          (74u)
-#define PIN_LED              PIN_LED_13
-#define PIN_LED2             PIN_LED_RXL
-#define PIN_LED3             PIN_LED_TXL
-
-/*
- * SPI Interfaces
- */
-#define SPI_INTERFACES_COUNT 1
-
-#define SPI_INTERFACE        SPI
-#define SPI_INTERFACE_ID     ID_SPI
-#define PIN_SPI_SS           (4u)
-#define PIN_SPI_MOSI         (76u)
-#define PIN_SPI_MISO         (75u)
-#define PIN_SPI_SCK          (77u)
-
-static const uint8_t SS   = 4 ;
-static const uint8_t MOSI = 76 ;
-static const uint8_t MISO = 75 ;
-static const uint8_t SCK  = 77 ;
-
-/*
- * Wire Interfaces
- */
-#define WIRE_INTERFACES_COUNT 2
-
-#define PIN_WIRE_SDA         (20u)
-#define PIN_WIRE_SCL         (21u)
-#define WIRE_INTERFACE       TWI1
-#define WIRE_INTERFACE_ID    ID_TWI1
-#define WIRE_ISR_HANDLER     TWI1_IrqHandler
-
-#define PIN_WIRE1_SDA        (68u)
-#define PIN_WIRE1_SCL        (69u)
-#define WIRE1_INTERFACE      TWI0
-#define WIRE1_INTERFACE_ID   ID_TWI0
-#define WIRE1_ISR_HANDLER    TWI0_IrqHandler
-
-/*
- * UART/USART Interfaces
- */
-#define PINS_UART            (80u)
-
-#define PINS_USART0          (81u)
-#define PINS_USART1          (82u)
-#define PINS_USART2          (83u)
-
-/*
- * Analog pins
- */
-static const uint8_t A0  = 54;
-static const uint8_t A1  = 55;
-static const uint8_t A2  = 56;
-static const uint8_t A3  = 57;
-static const uint8_t A4  = 58;
-static const uint8_t A5  = 59;
-static const uint8_t A6  = 60;
-static const uint8_t A7  = 61;
-static const uint8_t A8  = 62;
-static const uint8_t A9  = 63;
-static const uint8_t A10 = 64;
-static const uint8_t A11 = 65;
-static const uint8_t A12 = 66;
-static const uint8_t A13 = 67;
-// static const uint8_t A14 = ;
-// static const uint8_t A15 = ;
-
-/*
- * PWM
- */
-#define PWM_INTERFACE        PWM
-#define PWM_INTERFACE_ID     ID_PWM
-#define PWM_FREQUENCY        1000
-#define PWM_MAX_DUTY_CYCLE   255
-#define PWM_MIN_DUTY_CYCLE   0
-
-/*
- * TC
- */
-#define TC_INTERFACE        TC0
-#define TC_INTERFACE_ID     ID_TC0
-#define TC_FREQUENCY        1000
-#define TC_MAX_DUTY_CYCLE   255
-#define TC_MIN_DUTY_CYCLE   0
-
-#ifdef __cplusplus
-}
-#endif
-
-/*----------------------------------------------------------------------------
- *        Arduino objects - C++ only
- *----------------------------------------------------------------------------*/
-
-#ifdef __cplusplus
-
-extern UARTClass Serial1 ;
-
-extern USARTClass Serial2 ;
-extern USARTClass Serial3 ;
-extern USARTClass Serial4 ;
-
-#endif
-
-#endif /* _VARIANT_ARDUINO_DUE_U_ */
-