crosstool-ng/config/arch/xtensa.in

# xtensa specific configuration file

## select ARCH_SUPPORTS_32
## select ARCH_SUPPORTS_BOTH_ENDIAN
## select ARCH_DEFAULT_LE
## select ARCH_SUPPORTS_BOTH_MMU
## select ARCH_DEFAULT_HAS_MMU
##
## 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
## help    provide the name of the processor configuration through the
## 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.
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`
			`##`
			`## 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.`