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* arch: remove BR2_ARCH_HAS_ATOMICS optionGravatar Thomas Petazzoni2016-02-061-3/+0
| | | | | | | | Now that BR2_ARCH_HAS_ATOMICS is no longer used anywhere, we can remove it from arch/Config.in*, as well as from the documentation. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
* arch: tidy up mmu configGravatar Guido Martínez2015-06-091-0/+2
| | | | | | | | | | | | Instead of blacklisting which architectures support MMUs (mandatorily or optionally), introduce two Kconfig options that are selected by each architecture in each case. This simplifies the logic in BR2_USE_MMU. Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar> Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
* arch/Config.in.xtensa: provide BR2_ENDIAN symbolGravatar Max Filippov2015-05-051-0/+17
| | | | | | | | | | | | | | Packages get hints from the buildroot at configure time, e.g. ac_cv_c_bigendian=yes/no. This particular hint is based on the value of BR2_ENDIAN and when it doesn't match actual toolchain endiannes the build may break. Provide BR2_ENDIAN for xtensa to fix this sort of build errors. Fixes: http://autobuild.buildroot.net/results/31115fe8d88f52d77ed0f2da769eb8896a1b34a2/ Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
* arch/xtensa: always has atomic opsGravatar Yann E. MORIN2014-08-181-0/+3
| | | | | | | Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Anton Kolesov <Anton.Kolesov@synopsys.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
* xtensa: use uppercase for configurations and modified overlay structureGravatar Chris Zankel2012-11-211-11/+15
| | | | | | | | | | | Except for architecture and processor names, buildroot uses capitalized configuration names, so change the macro names for xtensa to follow that standard. Change the overlay file to have a subdirectory for each component (gdb, binutils, gcc, etc.) to make it more future-prove. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* xtensa: support configurable processor configurationsGravatar Chris Zankel2012-11-151-0/+31
| | | | | | | | | | | | | | | | | | | Xtensa is a configurable processor architecture, which allows to define additional instructions and registers. The required variant specific information for the toolchain is delivered in an 'overlay' file, which needs to be 'untarred' to the corresponding directories after the source is installed and patched. This patch provides support for binutils, gcc, and gdb with a very limited changes to the build scripts. These additions are only executed for the Xtensa architecture and have no effect on other architectures. [Thomas: rebased on top of the 'arch: improve definition of gcc mtune, mcpu, etc.' patch, and changed 'Target ABI' to 'Target Architecture Variant']. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* xtensa: add support for the Xtensa architectureGravatar Chris Zankel2012-11-151-0/+2
The Xtensa architecture had been removed because it required special handling and depended on additional directories and files that became obsolete over time. This change is more aligned to other architectures. [Thomas: rebased on top of the "arch: improve definition of gcc mtune, mcpu, etc." patch]. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>