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kconfig: reorg ARM options and make things consistent

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Make kconfig look the same for all architectures.

JIRA: ZEP-107
Change-Id: Ia8100194ec333fc07a1dff4f6f90364ce8bef4d3
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This commit is contained in:
Anas Nashif 2016-03-14 22:51:58 -04:00 • committed by Gerrit Code Review
commit 98ff441e53
2 changed files with 31 additions and 32 deletions
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34
arch/arm/Kconfig
View file

@ -35,41 +35,11 @@ config ARCH_DEFCONFIG
default "arch/arm/defconfig" default "arch/arm/defconfig"
menu "General Platform Configuration"
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" source "arch/arm/core/Kconfig"
endmenu menu "Platform Configuration"
source "arch/arm/soc/*/Kconfig" source "arch/arm/soc/*/Kconfig"
endmenu endmenu
endmenu

29
arch/arm/core/cortex_m/Kconfig
View file

@ -16,6 +16,35 @@
# limitations under the License. # limitations under the License.
# #
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.
config CPU_CORTEX_M3_M4 config CPU_CORTEX_M3_M4
bool bool
# Omit prompt to signify "hidden" option # Omit prompt to signify "hidden" option