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crosstool-ng/config/arch/xtensa.in

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xtensa: add support for the configurable Xtensa architecture. The Xtensa processor architecture is a configurable, extensible, and synthesizable 32-bit RISC processor core. Processor and SOC vendors can select from various processor options and even create customized instructions in addition to a base ISA to tailor the processor for a particular application. Because of the configurability, the build process requires one additional step for gcc, binutils, and gdb to update the default configuration. These configurations are packed into an 'overlay' tar image, and are simply untarred on top of the default configuration during the build. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2013-07-24 22:10:47 +00:00
# xtensa specific configuration file
## select ARCH_SUPPORTS_32
xtensa: fix endianness support To build uClibc correctly we need correct endianness selected in the crosstool-NG. Xtensa cores may be little- or big-endian, but this property is static. The toolchain knows the core endianness and doesn't need options to select it. Enable ARCH_SUPPORTS_BOTH_ENDIAN and select LE by default. Specify empty CT_ARCH_ENDIAN_CFLAG so that -m{big,little}-endian don't get added to the TARGET_CFLAGS, as it's not supported by gcc. Specify empty CT_ARCH_ENDIAN_LDFLAG so that -EB/-EL don't get added to the TARGET_LDFLAGS as they are ignored. Select big-endian in the example xtensa-unknown-linux-uclibc configuration. This fixes uClibc toolchain build for little-endian cores. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2016-10-24 21:48:57 +00:00
## select ARCH_SUPPORTS_BOTH_ENDIAN
## select ARCH_DEFAULT_LE
xtensa: add support for the configurable Xtensa architecture. The Xtensa processor architecture is a configurable, extensible, and synthesizable 32-bit RISC processor core. Processor and SOC vendors can select from various processor options and even create customized instructions in addition to a base ISA to tailor the processor for a particular application. Because of the configurability, the build process requires one additional step for gcc, binutils, and gdb to update the default configuration. These configurations are packed into an 'overlay' tar image, and are simply untarred on top of the default configuration during the build. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2013-07-24 22:10:47 +00:00
## select ARCH_SUPPORTS_BOTH_MMU
## select ARCH_DEFAULT_HAS_MMU
Switch gen-kconfig to new framework Also: - Move companion_* to comp_* to match the kconfig symbols - Replace bootstrap with former gen-versions.sh - Fold *.in.2 into their respective first parts; this moves common options to the end - if it is undesirable, inclusion of *.in can be moved where *.in.2 used to be (but that will also move version selection after common options). - Retire addToolVersion.sh (may later replace with a more comprehensive script that tries to download the added tarballs, copy the patches and try to apply them, and create a version.desc). Signed-off-by: Alexey Neyman <stilor@att.net>
2017-07-05 02:19:42 +00:00
xtensa: add support for the configurable Xtensa architecture. The Xtensa processor architecture is a configurable, extensible, and synthesizable 32-bit RISC processor core. Processor and SOC vendors can select from various processor options and even create customized instructions in addition to a base ISA to tailor the processor for a particular application. Because of the configurability, the build process requires one additional step for gcc, binutils, and gdb to update the default configuration. These configurations are packed into an 'overlay' tar image, and are simply untarred on top of the default configuration during the build. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2013-07-24 22:10:47 +00:00
## help The xtensa architecture
## help
## help Xtensa is a configurable and extensible processor architecture.
## help Supporting a specific configuration typically requires minor
## help modifications to a small set of configuration files in various
## help development tools. This process is automated and only requires
## help a configuration specific 'overlay' file.
## help
## help For a custom configuration, select the XTENSA_CUSTOM option and
xtensa: fix kconfig spelling and help text Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2015-11-19 06:40:57 +00:00
## help provide the name of the processor configuration through the
xtensa: add support for the configurable Xtensa architecture. The Xtensa processor architecture is a configurable, extensible, and synthesizable 32-bit RISC processor core. Processor and SOC vendors can select from various processor options and even create customized instructions in addition to a base ISA to tailor the processor for a particular application. Because of the configurability, the build process requires one additional step for gcc, binutils, and gdb to update the default configuration. These configurations are packed into an 'overlay' tar image, and are simply untarred on top of the default configuration during the build. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2013-07-24 22:10:47 +00:00
## help CT_ARCH_XTENSA_CUSTOM_NAME option.
## help
## help The default option (ARCH_xtensa_fsf) uses a built-in configuration,
## help which may or may not work for a particular Xtensa processor.
Switch gen-kconfig to new framework Also: - Move companion_* to comp_* to match the kconfig symbols - Replace bootstrap with former gen-versions.sh - Fold *.in.2 into their respective first parts; this moves common options to the end - if it is undesirable, inclusion of *.in can be moved where *.in.2 used to be (but that will also move version selection after common options). - Retire addToolVersion.sh (may later replace with a more comprehensive script that tries to download the added tarballs, copy the patches and try to apply them, and create a version.desc). Signed-off-by: Alexey Neyman <stilor@att.net>
2017-07-05 02:19:42 +00:00
choice
prompt "Target Architecture Variant"
default ARCH_xtensa_fsf
config XTENSA_CUSTOM
bool "Custom Xtensa processor configuration"
select TARGET_USE_OVERLAY
config ARCH_xtensa_fsf
bool "fsf - Default configuration"
endchoice
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