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# Kconfig - ARM core configuration options
#
# Copyright (c) 2015 Wind River Systems, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
config CPU_CORTEX
bool
# Omit prompt to signify "hidden" option
default n
help
This option signifies the use of a CPU of the Cortex family.
config CPU_CORTEX_M
bool
# Omit prompt to signify "hidden" option
default n
select CPU_CORTEX
select ARCH_HAS_CUSTOM_SWAP_TO_MAIN
help
This option signifies the use of a CPU of the Cortex-M family.
config CPU_HAS_SYSTICK
bool
# Omit prompt to signify "hidden" option
default n
help
This option is enabled when the CPU has systick timer implemented.
config CPU_HAS_FPU
# Hidden config selected by CPU family
bool
default n
help
This option is enabled when the CPU has a hardware floating point
unit.
menu "Floating Point Options"
depends on CPU_HAS_FPU
config FLOAT
bool
prompt "Floating point registers"
default n
help
This option allows tasks and fibers to use the floating point registers.
By default, only a single task or fiber may use the registers.
Disabling this option means that any task or fiber that uses a
floating point register will get a fatal exception.
config FP_SHARING
bool
prompt "Floating point register sharing"
depends on FLOAT
default n
help
This option allows multiple tasks and fibers to use the floating point
registers.
choice
prompt "Floating point ABI"
default FP_HARDABI
depends on FLOAT
config FP_HARDABI
bool "Floating point Hard ABI"
depends on FLOAT
help
This option selects the Floating point ABI in which hardware floating
point instructions are generated and uses FPU-specific calling
conventions
config FP_SOFTABI
bool "Floating point Soft ABI"
depends on FLOAT
help
This option selects the Floating point ABI in which hardware floating
point instructions are generated but soft-float calling conventions.
endchoice
endmenu
if CPU_CORTEX_M
source "arch/arm/core/cortex_m/Kconfig"
endif
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