path: root/arch/Config.in
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* arch/Config.in: introduce BR2_KERNEL_64_USERLAND_32 symbolGravatar Gustavo Zacarias2013-10-301-0/+3
| | | | | | | | | | | | | | | On some architectures one can be running a 64-bit kernel with a 32-bit userland. Such is the case for sparc64 (unsupported) for example and mips64 with n32 ABI. Some tools that interface directly with the kernel need to be built specially for this, so introduce this symbol to tweak their build in one central kludge to be future-proof. Example: bug #6602. Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
* targets: move target options to their own sub-menuGravatar Yann E. MORIN2013-09-051-0/+4
| | | | | | | | | | | | Currently, all target options lie in the top-level menu. This looks a bit clumsy, since all other options are neatly folded into their own sematic sub-menus each. Move the target option into their own sub-menu too. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Acked-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* nios2: Add new architectureGravatar Ezequiel Garcia2013-09-021-0/+11
| | | | | | | | | | | | | | This commit adds very basic support to build for the Nios II architecture. Toolchain support is still missing and instead we need to use an external custom toolchain. Notice that this architecture had been previously removed in Buildroot 2010.05-rc1 release (as explained in the CHANGES file) and this commit adds it back. Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* arch: use tabs instead of spaces in Config.in filesGravatar Thomas Petazzoni2013-07-161-1/+1
| | | | | Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* arch/arm: add support for Thumb2Gravatar Thomas Petazzoni2013-07-161-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | Until now, we were using the default ARM instruction set, as used by the toolchain: the 32 bits ARM instruction set for the internal backend, and for external toolchain, whatever default was chosen when the toolchain was generated. This commit adds support for the Thumb2 instruction set. To do so, it: * provides a menuconfig choice between ARM and Thumb2. The choice is only shown when Thumb2 is supported, i.e on ARMv7-A CPUs. * passes the --with-mode={arm,thumb} option when building gcc in the internal backend. This tells the compiler which type of instructions it should generate. * passes the m{arm,thumb} option in the external toolchain wrapper. ARM and Thumb2 code can freely be mixed together, so the fact that the C library has been built either ARM or Thumb2 and that the rest of the code is built Thumb2 or ARM is not a problem. [Peter: fix empty BR2_GCC_TARGET_MODE check] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* arch: Refactor BR2_SOFT_FLOAT into per-architecture optionsGravatar Thomas Petazzoni2013-07-161-0/+3
| | | | | | | | | | | | | | | | | | | | | | As we are going to introduced a more advanced support of floating point options for the ARM architecture, we need to adjust how the soft-float option is handled. We replace the current hidden option BR2_PREFER_SOFT_FLOAT option and the visible BR2_SOFT_FLOAT option by: * A global hidden BR2_SOFT_FLOAT option, defined in arch/Config.in, that tells whether the architecture-specific code is using software emulated floating point. This hidden option can be used throughout Buildroot to determine whether soft float is used or not. * Per-architecture visible BR2_<arch>_SOFT_FLOAT options, for the architecture for which it makes sense, which allows users to select soft float emulation when needed. This change will allow each architecture to have a different way of presenting its floating point capabilities. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* arch: introduce BR2_GCC_TARGET_{FPU, FLOAT_ABI}Gravatar Thomas Petazzoni2013-07-161-0/+12
| | | | | | | | | | | | | | | | Buildroot already has the BR2_GCC_TARGET_{TUNE,ARCH,ABI,CPU} hidden kconfig strings that allow per-architecture Config.in files to feed the appropriate values of --with-{tune,arch,abi-cpu} when building gcc, or the appropriate flags for the external toolchain wrapper. This commit has two additional options: BR2_GCC_TARGET_{FPU,FLOAT_ABI}, that allows to define the --with-{fpu,float} gcc configure options for the internal backend, or the -m{fpu,float-abi} options for the flags of the external toolchain wrapper. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* arch: toolchain: Introduce binary format FLAT types.Gravatar Sonic Zhang2013-05-051-0/+26
| | | | | | | | | Just introduce the symbol and options in arch generic Config.in. Add FLAT types specific compiling flags into package makefile. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* arch: toolchain: Introduce target CPU revision.Gravatar Sonic Zhang2013-05-051-0/+3
| | | | | | | | | Adds the possibility to have a free-form CPU revision string and append it to the target CPU. Only Blackfin actually uses this option. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* arch: toolchain: Introduce binary formats BINFMT_*.Gravatar Sonic Zhang2013-05-051-0/+34
| | | | | | | | | Just introduce the symbol and options in arch generic Config.in. Append FLAT format link flags to external toolchain wrapper. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* arc: Add ARC and ARC BE architectureGravatar Mischa Jonker2013-05-041-0/+18
| | | | | | | | Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs that can be used from deeply embedded to high performance host applications. Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* Mark AArch64 as a 64 bits architectureGravatar Thomas Petazzoni2013-03-181-0/+1
| | | | | 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/+11
| | | | | | | | | | | | | 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>
* arch: improve definition of gcc mtune, mcpu, etc.Gravatar Thomas Petazzoni2012-11-151-4/+55
| | | | | | | | | | | | | | | | | | As suggested by Yann E. Morin, there is a better way than our current big Config.in.common to define the gcc mtune, mcpu, march, etc. values. We can split the setting of those values in each architecture file, which makes a lot more sense. Therefore, the Config.in file now creates empty kconfig variables BR2_ARCH, BR2_ENDIAN, BR2_GCC_TARGET_TUNE, BR2_GCC_TARGET_ARCH, BR2_GCC_TARGET_ABI and BR2_GCC_TARGET_CPU. The values of those variables are set by the individual Config.in.<arch> files. This is possible because such files are now only conditionally included depending on the top-level architecture that has been selected. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* Split target/Config.in.arch into multiple Config.in.* in arch/Gravatar Thomas Petazzoni2012-11-041-0/+161
target/Config.in.arch had become too long, and we want to remove the target/ directory. So let's move it to arch/ and split it this way: * An initial Config.in that lists the top-level architecture, and sources the arch-specific Config.in.<arch> files, as well as Config.in.common (see below) * One Config.in.<arch> per architecture, listing the CPU families, ABI choices, etc. * One Config.in.common that defines the gcc mtune, march, mcpu values and other hidden options. [Peter: space->tab fix, mipsel64 little endian, mips3 as noted by Arnout] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>