Add KBOOT.

mk/flags.mk

@@ -0,0 +1,143 @@
+#-------------------------------------------------------------------------------
+# Copyright (c) 2012 Freescale Semiconductor, Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# o Redistributions of source code must retain the above copyright notice, this list
+#   of conditions and the following disclaimer.
+#
+# o 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.
+#
+# o Neither the name of Freescale Semiconductor, Inc. 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 HOLDER 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.
+#-------------------------------------------------------------------------------
+
+#-------------------------------------------------------------------------------
+# Compiler flags
+#-------------------------------------------------------------------------------
+
+# Enables all warnings
+C_FLAGS_WARNINGS = -Wall
+
+# Turn on all warnings.
+COMMON_FLAGS += $(C_FLAGS_WARNINGS)
+
+# Don't use common symbols.  This is usually done in kernels.  Makes
+# code size slightly larger and increases performance.
+COMMON_FLAGS += -fno-common
+
+#Place each function or data item into its own section in the output file
+COMMON_FLAGS += -ffunction-sections -fdata-sections
+
+# Use a freestanding build environment.  Standard for kernels, implies
+# std library may not exist.
+COMMON_FLAGS += -ffreestanding -fno-builtin
+
+# Set the C standard to C99 with GNU extensions.
+# Use traditional GNU inline function semantics.
+C99_FLAGS = -std=gnu99
+
+# Generate code specifically for cortex-mx CPU.
+# Use the ARM Procedure Call Standard.
+ARM_FLAGS = -mcpu=$(CPU) -mtune=$(CPU) -march=$(ARCH) -mapcs
+
+ARM_FLAGS += -mthumb
+
+# Use float-abi=softfp for soft floating point api with HW instructions.
+# Alternatively, float-abi=hard for hw float instructions and pass float args in float regs.
+# Here need to be modified.
+ifeq "$(CPU)" "cortex-m4"
+
+ifeq "$(CHOOSE_FLOAT)" "SOFT_FP"
+ARM_FLAGS += -mfloat-abi=softfp -mfpu=fpv4-sp-d16
+CC_LIB_POST := armv7e-m/softfp
+else ifeq "$(CHOOSE_FLOAT)" "HARD_FP"
+ARM_FLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
+CC_LIB_POST := armv7e-m/fpu
+else
+CC_LIB_POST := armv7e-m
+endif
+
+else ifeq "$(CPU)" "cortex-m0plus"
+CC_LIB_POST := armv6-m
+endif
+
+# Debug setting
+ifeq "$(DEBUG)" "1"
+COMMON_FLAGS += -O0
+COMMON_FLAGS += -g2 -gdwarf-2 -gstrict-dwarf
+DEFINES += -D_DEBUG=1
+else
+COMMON_FLAGS += -Os
+endif
+
+# Build common flags shared by C and C++.
+COMMON_FLAGS += $(ARM_FLAGS)
+
+# C flags. Set C99 mode.
+CFLAGS += $(COMMON_FLAGS) $(C99_FLAGS) -nostdinc
+
+# C++ flags. Disable exceptions and RTTI.
+CXXFLAGS += $(COMMON_FLAGS)
+CXXFLAGS += -fno-exceptions -fno-rtti -nostdinc -nostdinc++
+
+# AR flags.
+ARFLAGS := -rucs
+
+# AS flags.
+
+# LD flags.
+# Use newlib-nano. To disable it, specify USE_NANO=
+USE_NANO = --specs=nano.specs
+LDFLAGS := $(USE_NANO)
+
+ifndef _START
+SYSOBJ := $(LIBGCC_LDPATH)/crti.o \
+          $(LIBGCC_LDPATH)/crtn.o \
+          $(LIBC_LDPATH)/crt0.o
+else
+SYSOBJ :=
+endif
+
+LDFLAGS += $(COMMON_FLAGS) -nostartfiles -nodefaultlibs -nostdlib -Xlinker --gc-sections -Xlinker -cref -Xlinker -static -Xlinker -z -Xlinker muldefs
+
+#-------------------------------------------------------------------------------
+# Include paths
+#-------------------------------------------------------------------------------
+
+# These include paths have to be quoted because they may contain spaces,
+# particularly under cygwin.
+LDINC += -L '$(LIBGCC_LDPATH)' -L '$(LIBC_LDPATH)'
+
+# Indicate gcc and newlib std includes as -isystem so gcc tags and
+# treats them as system directories.
+SYSTEM_INC = \
+    -isystem '$(CC_INCLUDE)' \
+    -isystem '$(CC_INCLUDE_FIXED)' \
+    -isystem '$(LIBC_INCLUDE)'
+
+INCLUDES += \
+    $(SDK_ROOT)/platform \
+    $(SDK_ROOT)/platform/hal  \
+    $(SDK_ROOT)/platform/drivers  \
+    $(SDK_ROOT)/platform/utilities  \
+    $(SDK_ROOT)/platform/CMSIS/Include  \
+    $(SDK_ROOT)/platform/CMSIS/Include/device \
+    $(SDK_ROOT)/boards
+