############################################################################
# arch/arm/src/armv6-m/Toolchain.defs
#
#   Copyright (C) 2013 Gregory Nutt. All rights reserved.
#   Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
#    used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS 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.
#
############################################################################

# Setup for the selected toolchain

#
# Handle old-style chip-specific toolchain names in the absence of
# a new-style toolchain specification, force the selection of a single
# toolchain and allow the selected toolchain to be overridden by a
# command-line selection.
#

ifeq ($(filter y, $(CONFIG_ARMV6M_TOOLCHAIN_ATOLLIC)),y)
  CONFIG_ARMV6M_TOOLCHAIN ?= ATOLLIC
endif
ifeq ($(filter y, $(CONFIG_ARMV6M_TOOLCHAIN_BUILDROOT)),y)
  CONFIG_ARMV6M_TOOLCHAIN ?= BUILDROOT
endif
ifeq ($(filter y, $(CONFIG_ARMV6M_TOOLCHAIN_CODEREDL)),y)
  CONFIG_ARMV6M_TOOLCHAIN ?= CODEREDL
endif
ifeq ($(filter y, $(CONFIG_ARMV6M_TOOLCHAIN_CODEREDW)),y)
  CONFIG_ARMV6M_TOOLCHAIN ?= CODEREDW
endif
ifeq ($(filter y, $(CONFIG_ARMV6M_TOOLCHAIN_CODESOURCERYL)),y)
  CONFIG_ARMV6M_TOOLCHAIN ?= CODESOURCERYL
endif
ifeq ($(filter y, $(CONFIG_ARMV6M_TOOLCHAIN_CODESOURCERYW)),y)
  CONFIG_ARMV6M_TOOLCHAIN ?= CODESOURCERYW
endif
ifeq ($(filter y, $(CONFIG_ARMV6M_TOOLCHAIN_DEVKITARM)),y)
  CONFIG_ARMV6M_TOOLCHAIN ?= DEVKITARM
endif
ifeq ($(filter y, $(CONFIG_ARMV6M_TOOLCHAIN_GNU_EABI)),y)
  CONFIG_ARMV6M_TOOLCHAIN ?= GNU_EABI
endif

#
# Supported toolchains
#
# TODO - It's likely that all of these toolchains now support the
#        CortexM0.  Since they are all GCC-based, we could almost
#        certainly simplify this further.
#
# Each toolchain definition should set:
#
#  CROSSDEV         The GNU toolchain triple (command prefix)
#  ARCROSSDEV       If required, an alternative prefix used when 
#                   invoking ar and nm.
#  ARCHCPUFLAGS     CPU-specific flags selecting the instruction set
#                   options, etc.
#  MAXOPTIMIZATION  The maximum optimization level that results in
#                   reliable code generation.
#

# Atollic toolchain under Windows

ifeq ($(CONFIG_ARMV6M_TOOLCHAIN),ATOLLIC)
  CROSSDEV ?= arm-atollic-eabi-
  ARCROSSDEV ?= arm-atollic-eabi-
  ifneq ($(CONFIG_WINDOWS_NATIVE),y)
    WINTOOL = y
  endif
  ARCHCPUFLAGS = -mcpu=cortex-m0 -mthumb -march=armv6-m -mfloat-abi=soft
endif

# NuttX buildroot under Linux or Cygwin

ifeq ($(CONFIG_ARMV6M_TOOLCHAIN),BUILDROOT)
  CROSSDEV ?= arm-nuttx-eabi-
  ARCROSSDEV ?= arm-nuttx-eabi-
  ARCHCPUFLAGS = -mcpu=cortex-m0 -mthumb -mfloat-abi=soft
  MAXOPTIMIZATION = -Os
endif

# Code Red RedSuite under Linux

ifeq ($(CONFIG_ARMV6M_TOOLCHAIN),CODEREDL)
  CROSSDEV ?= arm-none-eabi-
  ARCROSSDEV ?= arm-none-eabi-
  ARCHCPUFLAGS = -mcpu=cortex-m0 -mthumb -march=armv6-m -mfloat-abi=soft
endif

# Code Red RedSuite under Windows

ifeq ($(CONFIG_ARMV6M_TOOLCHAIN),CODEREDW)
  CROSSDEV ?= arm-none-eabi-
  ARCROSSDEV ?= arm-none-eabi-
  ifneq ($(CONFIG_WINDOWS_NATIVE),y)
    WINTOOL = y
  endif
  ARCHCPUFLAGS = -mcpu=cortex-m0 -mthumb -march=armv6-m -mfloat-abi=soft
endif

# CodeSourcery under Linux

ifeq ($(CONFIG_ARMV6M_TOOLCHAIN),CODESOURCERYL)
  CROSSDEV ?= arm-none-eabi-
  ARCROSSDEV ?= arm-none-eabi-
  ARCHCPUFLAGS = -mcpu=cortex-m0 -mthumb -march=armv6-m -mfloat-abi=soft
  MAXOPTIMIZATION = -O2
endif

# CodeSourcery under Windows

ifeq ($(CONFIG_ARMV6M_TOOLCHAIN),CODESOURCERYW)
  CROSSDEV ?= arm-none-eabi-
  ARCROSSDEV ?= arm-none-eabi-
  ifneq ($(CONFIG_WINDOWS_NATIVE),y)
    WINTOOL = y
  endif
  ARCHCPUFLAGS = -mcpu=cortex-m0 -mthumb -march=armv6-m -mfloat-abi=soft
endif

# devkitARM under Windows

ifeq ($(CONFIG_ARMV6M_TOOLCHAIN),DEVKITARM)
  CROSSDEV ?= arm-eabi-
  ARCROSSDEV ?= arm-eabi-
  ifneq ($(CONFIG_WINDOWS_NATIVE),y)
    WINTOOL = y
  endif
  ARCHCPUFLAGS = -mcpu=cortex-m0 -mthumb -march=armv6-m -mfloat-abi=soft
endif

# Generic GNU EABI toolchain on OS X, Linux or any typical Posix system

ifeq ($(CONFIG_ARMV6M_TOOLCHAIN),GNU_EABI)
  CROSSDEV ?= arm-none-eabi-
  ARCROSSDEV ?= arm-none-eabi-
  MAXOPTIMIZATION = -O3
  ARCHCPUFLAGS = -mcpu=cortex-m0 -mthumb -march=armv6-m -mfloat-abi=soft
endif  
