| # Kconfig - ARM architecture configuration options |
| |
| # |
| # Copyright (c) 2014-2015 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 ARM |
| def_bool y |
| |
| config ARCH_DEFCONFIG |
| string |
| default "arch/arm/defconfig" |
| |
| source "kernel/Kconfig" |
| |
| source "misc/Kconfig" |
| |
| menu "General Platform Configuration" |
| |
| choice |
| prompt "Platform Selection" |
| default PLATFORM_FSL_FRDM_K64F |
| |
| config PLATFORM_FSL_FRDM_K64F |
| bool "FSL FRDM K64F" |
| select CPU_CORTEX_M |
| select CPU_CORTEX_M4 |
| |
| config PLATFORM_TI_LM3S6965 |
| bool "TI LM3S6965" |
| select CPU_CORTEX_M |
| select CPU_CORTEX_M3 |
| |
| endchoice |
| |
| |
| config ISA_THUMB2 |
| bool |
| # Omit prompt to signify "hidden" option |
| default n |
| help |
| From: http://www.arm.com/products/processors/technologies/instruction-set-architectures.php |
| |
| Thumb-2 technology is the instruction set underlying the ARM Cortex |
| architecture which provides enhanced levels of performance, energy |
| efficiency, and code density for a wide range of embedded |
| applications. |
| |
| Thumb-2 technology builds on the success of Thumb, the innovative |
| high code density instruction set for ARM microprocessor cores, to |
| increase the power of the ARM microprocessor core available to |
| developers of low cost, high performance systems. |
| |
| The technology is backwards compatible with existing ARM and Thumb |
| solutions, while significantly extending the features available to |
| the Thumb instructions set. This allows more of the application to |
| benefit from the best in class code density of Thumb. |
| |
| For performance optimised code Thumb-2 technology uses 31 percent |
| less memory to reduce system cost, while providing up to 38 percent |
| higher performance than existing high density code, which can be used |
| to prolong battery-life or to enrich the product feature set. Thumb-2 |
| technology is featured in the processor, and in all ARMv7 |
| architecture-based processors. |
| |
| source "arch/arm/core/Kconfig" |
| |
| endmenu |
| |
| if PLATFORM_TI_LM3S6965 |
| source "arch/arm/platforms/ti_lm3s6965/Kconfig" |
| endif |
| |
| if PLATFORM_FSL_FRDM_K64F |
| source "arch/arm/platforms/fsl_frdm_k64f/Kconfig" |
| endif |
| |
| source "drivers/Kconfig" |
| |
| source "net/Kconfig" |