update toolchain info
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@2964 7fd9a85b-ad96-42d3-883c-3090e2eb8679
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README
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^^^^^^
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This is the README file for the NuttX port to the Atmel AVR32DEV1 board.
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Contents
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^^^^^^^^
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* Toolchains
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* Development Environment
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* GNU Toolchains
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Development Environment
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^^^^^^^^^^^^^^^^^^^^^^^
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Either Linux or Cygwin on Windows can be used for the development environment.
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The source has been built only using the GNU toolchain (see below). Other
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toolchains will likely cause problems. Testing was performed using the Cygwin
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environment.
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GNU Toolchains
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^^^^^^^^^^^^^^
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The build logic in these directories assume that you are using the GNU
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toolchain with the Atmel patches. The patch file, pre-patched tool sources,
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and pre-built binaries are available from the Atmel website.
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CONFIG_AVR32_AVRTOOLSW=y # Use the windows version
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CONFIG_AVR32_AVRTOOLSL=y # Ue the Linux version
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NOTE: The NuttX builtroot cannot be used to build the AVR32 toolchain.
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This is because the Atmel patches that add support for the AVR32 are not
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included in the NuttX buildroot.
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IDEs
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^^^^
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NuttX is built using command-line make. It can be used with an IDE, but some
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effort will be required to create the project.
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Makefile Build
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--------------
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Under Eclipse, it is pretty easy to set up an "empty makefile project" and
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simply use the NuttX makefile to build the system. That is almost for free
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under Linux. Under Windows, you will need to set up the "Cygwin GCC" empty
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makefile project in order to work with Windows (Google for "Eclipse Cygwin" -
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there is a lot of help on the internet).
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Native Build
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------------
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Here are a few tips before you start that effort:
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1) Select the toolchain that you will be using in your .config file
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2) Start the NuttX build at least one time from the Cygwin command line
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before trying to create your project. This is necessary to create
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certain auto-generated files and directories that will be needed.
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3) Set up include pathes: You will need include/, arch/arm/src/lm3s,
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arch/arm/src/common, arch/arm/src/cortexm3, and sched/.
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4) All assembly files need to have the definition option -D __ASSEMBLY__
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on the command line.
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Startup files will probably cause you some headaches. The NuttX startup file
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is arch/arm/src/lm3s/lm3s_vectors.S.
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AVR32DEV1 Configuration Options
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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CONFIG_ARCH - Identifies the arch/ subdirectory. This should
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be set to:
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CONFIG_ARCH=avr
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CONFIG_ARCH_family - For use in C code:
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CONFIG_ARCH_AVR=y
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CONFIG_ARCH_architecture - For use in C code:
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CONFIG_ARCH_AVR32=y
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CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
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CONFIG_ARCH_CHIP=at91uc3
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CONFIG_ARCH_CHIP_name - For use in C code to identify the exact
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chip:
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CONFIG_ARCH_CHIP_AT91UC3B0256
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CONFIG_ARCH_BOARD - Identifies the configs subdirectory and
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hence, the board that supports the particular chip or SoC.
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CONFIG_ARCH_BOARD=avr32dev1 (for the AV32DEV1 board)
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CONFIG_ARCH_BOARD_name - For use in C code
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CONFIG_ARCH_BOARD_AVR32DEV1
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CONFIG_ARCH_LOOPSPERMSEC - Must be calibrated for correct operation
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of delay loops
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CONFIG_ENDIAN_BIG - define if big endian (default is little
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endian)
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CONFIG_DRAM_SIZE - Describes the installed DRAM (SRAM in this case):
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CONFIG_DRAM_SIZE=0x00010000 (64Kb)
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CONFIG_DRAM_START - The start address of installed DRAM
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CONFIG_DRAM_START=0x20000000
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CONFIG_DRAM_END - Last address+1 of installed RAM
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CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
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CONFIG_ARCH_IRQPRIO - The AT91UC3B0256 supports interrupt prioritization
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CONFIG_ARCH_IRQPRIO=y
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CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to boards that
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have LEDs
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CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
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stack. If defined, this symbol is the size of the interrupt
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stack in bytes. If not defined, the user task stacks will be
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used during interrupt handling.
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CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions
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CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to board architecture.
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CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that
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cause a 100 second delay during boot-up. This 100 second delay
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serves no purpose other than it allows you to calibratre
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CONFIG_ARCH_LOOPSPERMSEC. You simply use a stop watch to measure
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the 100 second delay then adjust CONFIG_ARCH_LOOPSPERMSEC until
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the delay actually is 100 seconds.
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AT91UC3B0256 specific device driver settings
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CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the
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console and ttys0 (default is the UART0).
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CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received.
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This specific the size of the receive buffer
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CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
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being sent. This specific the size of the transmit buffer
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CONFIG_UARTn_BAUD - The configure BAUD of the UART. Must be
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CONFIG_UARTn_BITS - The number of bits. Must be either 7 or 8.
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CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
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CONFIG_UARTn_2STOP - Two stop bits
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Configurations
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^^^^^^^^^^^^^^
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Each Stellaris LM3S6965 Evaluation Kit configuration is maintained in a
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sudirectory and can be selected as follow:
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cd tools
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./configure.sh avr32dev1/<subdir>
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cd -
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. ./setenv.sh
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Where <subdir> is one of the following:
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ostest:
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This configuration directory, performs a simple OS test using
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examples/ostest.
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@ -37,11 +37,16 @@ include ${TOPDIR}/.config
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# Setup for the selected toolchain
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ifeq ($(CONFIG_AVR32_CODESOURCERYW),y)
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# CodeSourcery under Windows
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CROSSDEV = avr32-elf-
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ifeq ($(CONFIG_AVR32_AVRTOOLSW),y)
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# AVR Tools under Windows
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CROSSDEV = avr32-
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WINTOOL = y
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ARCHCPUFLAGS =
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ARCHCPUFLAGS = -march=uc -mpart=uc3b0256
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endif
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ifeq ($(CONFIG_AVR32_AVRTOOLSL),y)
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# AVR Tools under Linux
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CROSSDEV = avr32-
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ARCHCPUFLAGS = -march=uc -mpart=uc3b0256
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endif
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ifeq ($(WINTOOL),y)
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@ -52,7 +57,6 @@ ifeq ($(WINTOOL),y)
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ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
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ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
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ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/ostest/ld.script}"
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MAXOPTIMIZATION = -O2
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else
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# Linux/Cygwin-native toolchain
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MKDEP = $(TOPDIR)/tools/mkdeps.sh
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@ -76,34 +80,31 @@ ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
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ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
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ARCHOPTIMIZATION = -g
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else
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ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
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ARCHOPTIMIZATION = -Os -ffunction-sections -fdata-sections -fno-strict-aliasing
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endif
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ARCHCFLAGS = -fno-builtin
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ARCHCFLAGS = -fno-builtin -muse-rodata-section
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ARCHCXXFLAGS = -fno-builtin -fno-exceptions
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ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
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ARCHWARNINGSXX = -Wall -Wshadow
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ARCHDEFINES =
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ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
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ARCHNOPICFLAGS = -fno-pic
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ARCHPICFLAGS = -fpic
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ARCHALLCFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
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ARCHALLCXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) -pipe
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CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
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CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
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CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) -pipe
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CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
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CFLAGS = $(ARCHNOPICFLAGS) $(ARCHALLCFLAGS)
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CPICFLAGS = $(ARCHPICFLAGS) $(ARCHALLCFLAGS)
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CXXFLAGS = $(ARCHNOPICFLAGS) $(ARCHALLCXXFLAGS)
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CXXPICFLAGS = $(ARCHPICFLAGS) $(ARCHALLCXXFLAGS)
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CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES)
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AFLAGS = $(CFLAGS) -D__ASSEMBLY__
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NXFLATLDFLAGS1 = -r -d -warn-common
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NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat.ld -no-check-sections
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LDNXFLATFLAGS = -e main -s 2048
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AFLAGS = $(ARCHALLCFLAGS) -D__ASSEMBLY__
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OBJEXT = .o
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LIBEXT = .a
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EXEEXT =
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ifneq ($(CROSSDEV),avr32-elf-)
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LDFLAGS += -nostartfiles -nodefaultlibs
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endif
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LDFLAGS += -nostartfiles -nodefaultlibs
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ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
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LDFLAGS += -g
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endif
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@ -93,6 +93,9 @@ CONFIG_ARCH_DMA=n
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# Identify toolchain and linker options
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#
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CONFIG_AVR32_AVRTOOLSW=y
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CONFIG_AVR32_AVRTOOLSL=n
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#
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# Individual subsystems can be enabled:
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#
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@ -37,11 +37,16 @@ if [ "$(basename $0)" = "setenv.sh" ] ; then
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exit 1
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fi
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#
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# This PATH setup assumes that you are using versin 2.1.4 of the Atmel
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# AVR GNU tools installed at the default location on Windows.
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#
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if [ -z "${PATH_ORIG}" ]; then export PATH_ORIG="${PATH}"; fi
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WD=`pwd`
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export BUILDROOT_BIN="${WD}/../buildroot/build_arm_nofpu/staging_dir/bin"
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export PATH="${BUILDROOT_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
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export AVRTOOLS_BIN="/cygdrive/c/Program Files/Atmel/AVR Tools/AVR32 Toolchain/bin/"
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export PATH="${AVRTOOLS_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
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echo "PATH : ${PATH}"
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