Modernize FMUv2 config (using the upstream NuttX config)

5 files changed, 245 insertions, 187 deletions

diff --git a/nuttx-configs/px4fmu-v2/Kconfig b/nuttx-configs/px4fmu-v2/Kconfig
index ae2bf3130..f9f0c5e6a 100644
--- a/nuttx-configs/px4fmu-v2/Kconfig
+++ b/nuttx-configs/px4fmu-v2/Kconfig
@@ -2,3 +2,21 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+if ARCH_BOARD_PX4FMU_V2
+
+config BOARD_HAS_PROBES
+	bool "Board provides GPIO or other Hardware for signaling to timing analyze."
+	default y
+	---help---
+		This board provides GPIO FMU-CH1-6 as PROBE_1-6 to provide timing signals from selected drivers.
+
+config BOARD_USE_PROBES
+	bool "Enable the use the board provided GPIO FMU-CH1-6 as PROBE_1-6 to provide timing signals from selected drivers"
+	default n
+	depends on BOARD_HAS_PROBES
+
+	---help---
+		Select to use GPIO FMU-CH1-6 to provide timing signals from selected drivers.
+
+endif
diff --git a/nuttx-configs/px4fmu-v2/include/board.h b/nuttx-configs/px4fmu-v2/include/board.h
index 52668cacd..d61cd1631 100755
--- a/nuttx-configs/px4fmu-v2/include/board.h
+++ b/nuttx-configs/px4fmu-v2/include/board.h
@@ -196,81 +196,123 @@
 
 /* Alternate function pin selections ************************************************/
 
-/*
- * UARTs.
- */
-#define GPIO_USART1_RX	GPIO_USART1_RX_1	/* console in from IO */
-#define GPIO_USART1_TX	0			/* USART1 is RX-only */
+/* UARTs */
+
+#define GPIO_USART1_RX   GPIO_USART1_RX_1    /* Console in from IO */
+#define GPIO_USART1_TX   0                   /* USART1 is RX-only */
 
-#define GPIO_USART2_RX	GPIO_USART2_RX_2
-#define GPIO_USART2_TX	GPIO_USART2_TX_2
-#define GPIO_USART2_RTS	GPIO_USART2_RTS_2
-#define GPIO_USART2_CTS	GPIO_USART2_CTS_2
+#define GPIO_USART2_RX   GPIO_USART2_RX_2
+#define GPIO_USART2_TX   GPIO_USART2_TX_2
+#define GPIO_USART2_RTS  GPIO_USART2_RTS_2
+#define GPIO_USART2_CTS  GPIO_USART2_CTS_2
 
-#define GPIO_USART3_RX	GPIO_USART3_RX_3
-#define GPIO_USART3_TX	GPIO_USART3_TX_3
-#define GPIO_USART3_RTS	GPIO_USART3_RTS_2
-#define GPIO_USART3_CTS	GPIO_USART3_CTS_2
+#define GPIO_USART3_RX   GPIO_USART3_RX_3
+#define GPIO_USART3_TX   GPIO_USART3_TX_3
+#define GPIO_USART3_RTS  GPIO_USART3_RTS_2
+#define GPIO_USART3_CTS  GPIO_USART3_CTS_2
 
-#define GPIO_UART4_RX	GPIO_UART4_RX_1
-#define GPIO_UART4_TX	GPIO_UART4_TX_1
+#define GPIO_UART4_RX    GPIO_UART4_RX_1
+#define GPIO_UART4_TX    GPIO_UART4_TX_1
 
-#define GPIO_USART6_RX	GPIO_USART6_RX_1
-#define GPIO_USART6_TX	GPIO_USART6_TX_1
+#define GPIO_USART6_RX   GPIO_USART6_RX_1
+#define GPIO_USART6_TX   GPIO_USART6_TX_1
 
-#define GPIO_UART7_RX	GPIO_UART7_RX_1
-#define GPIO_UART7_TX	GPIO_UART7_TX_1
+#define GPIO_UART7_RX    GPIO_UART7_RX_1
+#define GPIO_UART7_TX    GPIO_UART7_TX_1
 
 /* UART8 has no alternate pin config */
 
 /* UART RX DMA configurations */
+
 #define DMAMAP_USART1_RX DMAMAP_USART1_RX_2
 #define DMAMAP_USART6_RX DMAMAP_USART6_RX_2
 
-/*
- * CAN
+/* CAN
  *
  * CAN1 is routed to the onboard transceiver.
  * CAN2 is routed to the expansion connector.
  */
-#define GPIO_CAN1_RX	GPIO_CAN1_RX_3
-#define GPIO_CAN1_TX	GPIO_CAN1_TX_3
-#define GPIO_CAN2_RX	GPIO_CAN2_RX_1
-#define GPIO_CAN2_TX	GPIO_CAN2_TX_2
 
-/*
- * I2C
+#define GPIO_CAN1_RX     GPIO_CAN1_RX_3
+#define GPIO_CAN1_TX     GPIO_CAN1_TX_3
+#define GPIO_CAN2_RX     GPIO_CAN2_RX_1
+#define GPIO_CAN2_TX     GPIO_CAN2_TX_2
+
+/* I2C
  *
  * The optional _GPIO configurations allow the I2C driver to manually
  * reset the bus to clear stuck slaves.  They match the pin configuration,
  * but are normally-high GPIOs.
  */
-#define GPIO_I2C1_SCL		GPIO_I2C1_SCL_2
-#define GPIO_I2C1_SDA		GPIO_I2C1_SDA_2
-#define GPIO_I2C1_SCL_GPIO	(GPIO_OUTPUT|GPIO_OPENDRAIN|GPIO_SPEED_50MHz|GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN8)
-#define GPIO_I2C1_SDA_GPIO	(GPIO_OUTPUT|GPIO_OPENDRAIN|GPIO_SPEED_50MHz|GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN9)
-
-#define GPIO_I2C2_SCL		GPIO_I2C2_SCL_1
-#define GPIO_I2C2_SDA		GPIO_I2C2_SDA_1
-#define GPIO_I2C2_SCL_GPIO	(GPIO_OUTPUT|GPIO_OPENDRAIN|GPIO_SPEED_50MHz|GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN10)
-#define GPIO_I2C2_SDA_GPIO	(GPIO_OUTPUT|GPIO_OPENDRAIN|GPIO_SPEED_50MHz|GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN11)
-
-/*
- * SPI
+
+#define GPIO_I2C1_SCL    GPIO_I2C1_SCL_2
+#define GPIO_I2C1_SDA    GPIO_I2C1_SDA_2
+#define GPIO_I2C1_SCL_GPIO \
+   (GPIO_OUTPUT|GPIO_OPENDRAIN|GPIO_SPEED_50MHz|GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN8)
+#define GPIO_I2C1_SDA_GPIO \
+   (GPIO_OUTPUT|GPIO_OPENDRAIN|GPIO_SPEED_50MHz|GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN9)
+
+#define GPIO_I2C2_SCL    GPIO_I2C2_SCL_1
+#define GPIO_I2C2_SDA    GPIO_I2C2_SDA_1
+#define GPIO_I2C2_SCL_GPIO \
+   (GPIO_OUTPUT|GPIO_OPENDRAIN|GPIO_SPEED_50MHz|GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN10)
+#define GPIO_I2C2_SDA_GPIO \
+   (GPIO_OUTPUT|GPIO_OPENDRAIN|GPIO_SPEED_50MHz|GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN11)
+
+/* SPI
  *
  * There are sensors on SPI1, and SPI2 is connected to the FRAM.
  */
-#define GPIO_SPI1_MISO	(GPIO_SPI1_MISO_1|GPIO_SPEED_50MHz)
-#define GPIO_SPI1_MOSI	(GPIO_SPI1_MOSI_1|GPIO_SPEED_50MHz)
-#define GPIO_SPI1_SCK	(GPIO_SPI1_SCK_1|GPIO_SPEED_50MHz)
 
-#define GPIO_SPI2_MISO	(GPIO_SPI2_MISO_1|GPIO_SPEED_50MHz)
-#define GPIO_SPI2_MOSI	(GPIO_SPI2_MOSI_1|GPIO_SPEED_50MHz)
-#define GPIO_SPI2_SCK	(GPIO_SPI2_SCK_2|GPIO_SPEED_50MHz)
+#define GPIO_SPI1_MISO   GPIO_SPI1_MISO_1
+#define GPIO_SPI1_MOSI   GPIO_SPI1_MOSI_1
+#define GPIO_SPI1_SCK    GPIO_SPI1_SCK_1
+
+#define GPIO_SPI2_MISO   GPIO_SPI2_MISO_1
+#define GPIO_SPI2_MOSI   GPIO_SPI2_MOSI_1
+#define GPIO_SPI2_SCK    GPIO_SPI2_SCK_2
+
+#define GPIO_SPI4_MISO	GPIO_SPI4_MISO_1
+#define GPIO_SPI4_MOSI	GPIO_SPI4_MOSI_1
+#define GPIO_SPI4_SCK	GPIO_SPI4_SCK_1
+
+/* LED Definitions.  Needed if CONFIG_ARCH_LEDs is defined */
+
+#define LED_STARTED      0
+#define LED_HEAPALLOCATE 0
+#define LED_IRQSENABLED  0
+#define LED_STACKCREATED 1
+#define LED_INIRQ        1
+#define LED_SIGNAL       1
+#define LED_ASSERTION    1
+#define LED_PANIC        1
+
+/* Board provides GPIO or other Hardware for signaling to timing analyzer */
+
+#if defined(CONFIG_BOARD_USE_PROBES)
+# define PROBE_N(n) (1<<((n)-1))
+# define PROBE_1	(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTE|GPIO_PIN14)
+# define PROBE_2	(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTE|GPIO_PIN13)
+# define PROBE_3	(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTE|GPIO_PIN11)
+# define PROBE_4	(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTE|GPIO_PIN9)
+# define PROBE_5	(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTD|GPIO_PIN13)
+# define PROBE_6	(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTD|GPIO_PIN14)
+
+# define PROBE_INIT(mask) \
+	do { \
+		if ((mask)& PROBE_N(1)) { stm32_configgpio(PROBE_1); } \
+		if ((mask)& PROBE_N(2)) { stm32_configgpio(PROBE_2); } \
+		if ((mask)& PROBE_N(3)) { stm32_configgpio(PROBE_3); } \
+		if ((mask)& PROBE_N(4)) { stm32_configgpio(PROBE_4); } \
+		if ((mask)& PROBE_N(5)) { stm32_configgpio(PROBE_5); } \
+		if ((mask)& PROBE_N(6)) { stm32_configgpio(PROBE_6); } \
+	} while(0)
+
+# define PROBE(n,s)  do {stm32_gpiowrite(PROBE_##n,(s));}while(0)
+# define PROBE_MARK(n) PROBE(n,false);PROBE(n,true)
+#endif
+
 
-#define GPIO_SPI4_MISO	(GPIO_SPI4_MISO_1|GPIO_SPEED_50MHz)
-#define GPIO_SPI4_MOSI	(GPIO_SPI4_MOSI_1|GPIO_SPEED_50MHz)
-#define GPIO_SPI4_SCK	(GPIO_SPI4_SCK_1|GPIO_SPEED_50MHz)
 
 /************************************************************************************
  * Public Data
diff --git a/nuttx-configs/px4fmu-v2/nsh/Make.defs b/nuttx-configs/px4fmu-v2/nsh/Make.defs
index 5a1d5af2c..02e2db428 100644
--- a/nuttx-configs/px4fmu-v2/nsh/Make.defs
+++ b/nuttx-configs/px4fmu-v2/nsh/Make.defs
@@ -1,5 +1,5 @@
 ############################################################################
-# configs/px4fmu-v2/nsh/Make.defs
+# configs/px4fmu-v2_updstream/nsh/Make.defs
 #
 #   Copyright (C) 2011 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
@@ -35,146 +35,145 @@
 
 include ${TOPDIR}/.config
 include ${TOPDIR}/tools/Config.mk
-
-#
-# We only support building with the ARM bare-metal toolchain from
-# https://launchpad.net/gcc-arm-embedded on Windows, Linux or Mac OS.
-#
-CONFIG_ARMV7M_TOOLCHAIN	:= GNU_EABI
-
 include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
-CC			 = $(CROSSDEV)gcc
-CXX			 = $(CROSSDEV)g++
-CPP			 = $(CROSSDEV)gcc -E
-LD			 = $(CROSSDEV)ld
-AR			 = $(CROSSDEV)ar rcs
-NM			 = $(CROSSDEV)nm
-OBJCOPY			 = $(CROSSDEV)objcopy
-OBJDUMP			 = $(CROSSDEV)objdump
+CONFIG_ARMV7M_TOOLCHAIN        := GNU_EABI
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(CROSSDEV)ar rcs
+NM = $(CROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
 
 MAXOPTIMIZATION		 = -Os
-ARCHCPUFLAGS		 = -mcpu=cortex-m4 \
-			   -mthumb \
-			   -march=armv7e-m \
-			   -mfpu=fpv4-sp-d16 \
-			   -mfloat-abi=hard
 
+ARCHCPUFLAGS = -mcpu=cortex-m4 \
+    -mthumb \
+    -march=armv7e-m \
+    -mfpu=fpv4-sp-d16 \
+    -mfloat-abi=hard
 
-# enable precise stack overflow tracking
 ifeq ($(CONFIG_ARMV7M_STACKCHECK),y)
-INSTRUMENTATIONDEFINES	 = -finstrument-functions -ffixed-r10
-endif
+# enable precise stack overflow tracking
+INSTRUMENTATIONDEFINES   = -finstrument-functions \
+                           -ffixed-r10
+endif 
+# Pull in *just* libm from the toolchain ... this is grody
 
-# pull in *just* libm from the toolchain ... this is grody
-LIBM			 = "${shell $(CC) $(ARCHCPUFLAGS) -print-file-name=libm.a}"
-EXTRA_LIBS		+= $(LIBM)
+LIBM = "${shell $(CC) $(ARCHCPUFLAGS) -print-file-name=libm.a}"
+EXTRA_LIBS += $(LIBM)
 
-# use our linker script
-LDSCRIPT		 = ld.script
+# Use our linker script
+
+LDSCRIPT = ld.script
 
 ifeq ($(WINTOOL),y)
   # Windows-native toolchains
-  DIRLINK		 = $(TOPDIR)/tools/copydir.sh
-  DIRUNLINK		 = $(TOPDIR)/tools/unlink.sh
-  MKDEP			 = $(TOPDIR)/tools/mknulldeps.sh
-  ARCHINCLUDES		 = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
-  ARCHXXINCLUDES	 = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
-  ARCHSCRIPT		 = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
+  DIRLINK = $(TOPDIR)/tools/copydir.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
+  ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
+  ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   ifeq ($(PX4_WINTOOL),y)
     # Windows-native toolchains (MSYS)
-    DIRLINK		 = $(TOPDIR)/tools/copydir.sh
-    DIRUNLINK		 = $(TOPDIR)/tools/unlink.sh
-    MKDEP		 = $(TOPDIR)/tools/mknulldeps.sh
-    ARCHINCLUDES	 = -I. -isystem $(TOPDIR)/include
-    ARCHXXINCLUDES	 = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
-    ARCHSCRIPT		 = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
+    DIRLINK = $(TOPDIR)/tools/copydir.sh
+    DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+    MKDEP = $(TOPDIR)/tools/mknulldeps.sh
+    ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+    ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+    ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
   else
-    # Linux/Cygwin-native toolchain 
-    MKDEP		 = $(TOPDIR)/tools/mkdeps.sh
-    ARCHINCLUDES	 = -I. -isystem $(TOPDIR)/include
-    ARCHXXINCLUDES	 = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
-    ARCHSCRIPT		 = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
+    # Linux/Cygwin-native toolchain
+    MKDEP = $(TOPDIR)/tools/mkdeps.sh
+    ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+    ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+    ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
   endif
 endif
 
-# tool versions
-ARCHCCVERSION		 = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
-ARCHCCMAJOR		 = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+# Tool versions
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-# optimisation flags
-ARCHOPTIMIZATION	 = $(MAXOPTIMIZATION) \
-			   -fno-strict-aliasing \
-			   -fno-strength-reduce \
-			   -fomit-frame-pointer \
-   			   -funsafe-math-optimizations \
-   			   -fno-builtin-printf \
-   			   -ffunction-sections \
-   			   -fdata-sections
+# Optimization flags
+
+ARCHOPTIMIZATION = $(MAXOPTIMIZATION) \
+    -fno-strict-aliasing \
+    -fno-strength-reduce \
+    -fomit-frame-pointer \
+    -funsafe-math-optimizations \
+    -fno-builtin-printf \
+    -ffunction-sections \
+    -fdata-sections
 
 ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
-ARCHOPTIMIZATION	+= -g
+ARCHOPTIMIZATION += -g
 endif
 
-ARCHCFLAGS		 = -std=gnu99
-ARCHCXXFLAGS		 = -fno-exceptions -fno-rtti -std=gnu++0x
-ARCHWARNINGS		 = -Wall \
-			   -Wno-sign-compare \
-			   -Wextra \
-			   -Wdouble-promotion \
-			   -Wshadow \
-			   -Wfloat-equal \
-			   -Wframe-larger-than=1024 \
-			   -Wpointer-arith \
-			   -Wlogical-op \
-			   -Wmissing-declarations \
-			   -Wpacked \
-			   -Wno-unused-parameter
+ARCHCFLAGS = -std=gnu99
+ARCHCXXFLAGS = -fno-exceptions -fno-rtti -std=gnu++0x
+ARCHWARNINGS = -Wall \
+    -Wno-sign-compare \
+    -Wextra \
+    -Wdouble-promotion \
+    -Wshadow \
+    -Wfloat-equal \
+    -Wframe-larger-than=1024 \
+    -Wpointer-arith \
+    -Wlogical-op \
+    -Wmissing-declarations \
+    -Wpacked \
+    -Wno-unused-parameter
 #   -Wcast-qual  - generates spurious noreturn attribute warnings, try again later
 #   -Wconversion - would be nice, but too many "risky-but-safe" conversions in the code
 #   -Wcast-align - would help catch bad casts in some cases, but generates too many false positives
 
-ARCHCWARNINGS		 = $(ARCHWARNINGS) \
-			   -Wbad-function-cast \
-			   -Wstrict-prototypes \
-			   -Wold-style-declaration \
-			   -Wmissing-parameter-type \
-			   -Wmissing-prototypes \
-			   -Wnested-externs
-ARCHWARNINGSXX		 = $(ARCHWARNINGS) \
-			   -Wno-psabi
-ARCHDEFINES		 =
-ARCHPICFLAGS		 = -fpic -msingle-pic-base -mpic-register=r10
-
-# this seems to be the only way to add linker flags
-EXTRA_LIBS		+= --warn-common \
-			   --gc-sections
-
-CFLAGS			 = $(ARCHCFLAGS) $(ARCHCWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(INSTRUMENTATIONDEFINES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe -fno-common
-CPICFLAGS		 = $(ARCHPICFLAGS) $(CFLAGS)
-CXXFLAGS		 = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(INSTRUMENTATIONDEFINES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
-CXXPICFLAGS		 = $(ARCHPICFLAGS) $(CXXFLAGS)
-CPPFLAGS		 = $(ARCHINCLUDES) $(INSTRUMENTATIONDEFINES) $(ARCHDEFINES) $(EXTRADEFINES)
-AFLAGS			 = $(CFLAGS) -D__ASSEMBLY__
-
-NXFLATLDFLAGS1		 = -r -d -warn-common
-NXFLATLDFLAGS2		 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat.ld -no-check-sections
-LDNXFLATFLAGS		 = -e main -s 2048
-
-OBJEXT			 = .o
-LIBEXT			 = .a
-EXEEXT			 =
-
-
-# produce partially-linked $1 from files in $2
+ARCHCWARNINGS = $(ARCHWARNINGS) \
+    -Wbad-function-cast \
+    -Wstrict-prototypes \
+    -Wold-style-declaration \
+    -Wmissing-parameter-type \
+    -Wmissing-prototypes \
+    -Wnested-externs
+ARCHWARNINGSXX = $(ARCHWARNINGS) \
+    -Wno-psabi
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+# This seems to be the only way to add linker flags
+
+EXTRA_LIBS += --warn-common \
+    --gc-sections
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHCWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(INSTRUMENTATIONDEFINES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe -fno-common
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(INSTRUMENTATIONDEFINES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(INSTRUMENTATIONDEFINES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+# Produce partially-linked $1 from files in $2
+
 define PRELINK
-	@echo "PRELINK: $1"
-	$(Q) $(LD) -Ur -o $1 $2 && $(OBJCOPY) --localize-hidden $1
+ @echo "PRELINK: $1"
+ $(Q) $(LD) -Ur -o $1 $2 && $(OBJCOPY) --localize-hidden $1
 endef
 
-HOSTCC			 = gcc
-HOSTINCLUDES		 = -I.
-HOSTCFLAGS		 = -Wall -Wstrict-prototypes -Wshadow -g -pipe
-HOSTLDFLAGS		 =
-
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
diff --git a/nuttx-configs/px4fmu-v2/scripts/ld.script b/nuttx-configs/px4fmu-v2/scripts/ld.script
index b04ad89a6..5214d5d3a 100644
--- a/nuttx-configs/px4fmu-v2/scripts/ld.script
+++ b/nuttx-configs/px4fmu-v2/scripts/ld.script
@@ -1,5 +1,5 @@
 /****************************************************************************
- * configs/px4fmu/common/ld.script
+ * configs/px4fmu-v2_upstream/common/ld.script
  *
  *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
@@ -61,7 +61,7 @@ OUTPUT_ARCH(arm)
 ENTRY(__start)		/* treat __start as the anchor for dead code stripping */
 EXTERN(_vectors)	/* force the vectors to be included in the output */
 
-/* 
+/*
  * Ensure that abort() is present in the final object.  The exception handling
  * code pulled in by libgcc.a requires it (and that code cannot be easily avoided).
  */
@@ -73,24 +73,24 @@ SECTIONS
 	.text : {
 		_stext = ABSOLUTE(.);
 		*(.vectors)
-                . = ALIGN(32);
-                /*
-                This signature provides the bootloader with a way to delay booting
-                */
-                _bootdelay_signature = ABSOLUTE(.);
-                FILL(0xffecc2925d7d05c5)
-                . += 8;
-		*(.text .text.*)        
+		. = ALIGN(32);
+		/*
+		This signature provides the bootloader with a way to delay booting
+		*/
+		_bootdelay_signature = ABSOLUTE(.);
+		FILL(0xffecc2925d7d05c5)
+		. += 8;
+		*(.text .text.*)
 		*(.fixup)
 		*(.gnu.warning)
-		*(.rodata .rodata.*)        
+		*(.rodata .rodata.*)
 		*(.gnu.linkonce.t.*)
 		*(.got)
 		*(.gcc_except_table)
 		*(.gnu.linkonce.r.*)
 		_etext = ABSOLUTE(.);
 
-		/* 
+		/*
 		 * This is a hack to make the newlib libm __errno() call
 		 * use the NuttX get_errno_ptr() function.
 		 */
diff --git a/nuttx-configs/px4fmu-v2/src/Makefile b/nuttx-configs/px4fmu-v2/src/Makefile
index d4276f7fc..35ad52a2d 100644
--- a/nuttx-configs/px4fmu-v2/src/Makefile
+++ b/nuttx-configs/px4fmu-v2/src/Makefile
@@ -1,5 +1,5 @@
 ############################################################################
-# configs/px4fmu/src/Makefile
+# configs/px4fmu-v2_upstream/src/Makefile
 #
 #   Copyright (C) 2011 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
@@ -35,24 +35,24 @@
 
 -include $(TOPDIR)/Make.defs
 
-CFLAGS		+= -I$(TOPDIR)/sched
+CFLAGS += -I$(TOPDIR)/sched
 
-ASRCS		= 
-AOBJS		= $(ASRCS:.S=$(OBJEXT))
+ASRCS =
+AOBJS = $(ASRCS:.S=$(OBJEXT))
 
-CSRCS		= empty.c
-COBJS		= $(CSRCS:.c=$(OBJEXT))
+CSRCS = empty.c
+COBJS = $(CSRCS:.c=$(OBJEXT))
 
-SRCS		= $(ASRCS) $(CSRCS)
-OBJS		= $(AOBJS) $(COBJS)
+SRCS = $(ASRCS) $(CSRCS)
+OBJS = $(AOBJS) $(COBJS)
 
-ARCH_SRCDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src
+ARCH_SRCDIR = $(TOPDIR)/arch/$(CONFIG_ARCH)/src
 ifeq ($(WINTOOL),y)
-  CFLAGS	+= -I "${shell cygpath -w $(ARCH_SRCDIR)/chip}" \
-  		   -I "${shell cygpath -w $(ARCH_SRCDIR)/common}" \
-  		   -I "${shell cygpath -w $(ARCH_SRCDIR)/armv7-m}"
+  CFLAGS += -I "${shell cygpath -w $(ARCH_SRCDIR)/chip}" \
+            -I "${shell cygpath -w $(ARCH_SRCDIR)/common}" \
+            -I "${shell cygpath -w $(ARCH_SRCDIR)/armv7-m}"
 else
-  CFLAGS	+= -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common -I$(ARCH_SRCDIR)/armv7-m
+  CFLAGS += -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common -I$(ARCH_SRCDIR)/armv7-m
 endif
 
 all: libboard$(LIBEXT)
@@ -81,4 +81,3 @@ distclean: clean
 	$(call DELFILE, .depend)
 
 -include Make.dep
-