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* arch: remove Blackfin architectureGravatar Thomas Petazzoni2018-04-151-102/+0
| | | | | | | | | | | | | | | | | The Blackfin architecture has for a long time been complicated to maintain, with poor support in upstream binutils/gcc. As of April 2018, the Blackfin architecture has been dropped from the upstream Linux kernel. Also, the Analog Device engineer who used to be in touch with the Buildroot community also privately said we should drop the support for this architecture, which Analog Devices is no longer using, promoting and maintaining. The BR2_BINFMT_FLAT_SEP_DATA option becomes unselectable, it will be removed in a future commit. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
* arch/Config.in*: fix attributes orderGravatar Ricardo Martincoski2018-04-011-1/+1
| | | | | | | ... to follow the convention: type, default, depends on, select, help. Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
* arc/bfin: remove 60x coresGravatar Yann E. MORIN2017-10-021-12/+0
| | | | | | | | | | | | | | | | | | | | | Those cores are not supported in upstream gcc, not even in master. The only toolchain that supported those core was the 2014R1 ADI rebuilt toolchain, but we removed it in 311bc13 (toolchain: kill ADI Blackfin toolchain) because there was too many issues with it. ADI has not released any newer toolchain since then. There is little hope for those cores now, so remove them. Support for those cores has been useless and unusable for a while without nobody noticing, therefore we intentionally skip adding Config.in.legacy. This would require keeping code in arch/Config.in.bfin since the options being removed are inside a choice...endchoice block. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> [Thomas: explain why we don't add the options to Config.in.legacy.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
* arch/bfin: internal backend not suitable for some coresGravatar Yann E. MORIN2017-10-021-0/+4
| | | | | | | | | | | | Some cores are not supported by upstream gcc. Use the newly-introduced symbol to state so, rather than have the exclusion in the toolchain choice. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Arnout Vandecappelle <arnout@mind.be> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
* arch: add BR2_READELF_ARCH_NAME hidden config optionGravatar Thomas Petazzoni2017-03-201-0/+3
| | | | | | | | | This config option corresponds to the string returned by readelf for the "Machine" field of the ELF header. It will be used to check if the architecture of binaries built by Buildroot match the target architecture. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
* bfin: change default to bf532, internal toolchain !bf6xxGravatar Waldemar Brodkorb2016-08-271-1/+1
| | | | | | | | | The default Blackfin processor in Buildroot isn't supported by gcc 6.1.0, so use bf532 as default. Disable any bf6xx processors for internal toolchain users. Signed-off-by: Waldemar Brodkorb <wbx@openadk.org> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
* 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/bfin: 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>
* 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: toolchain: Introduce target CPU revision.Gravatar Sonic Zhang2013-05-051-0/+8
| | | | | | | | | 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: Add blackfin CPU choiceGravatar Sonic Zhang2013-05-051-0/+94
| | | | | | | | | This patch adds a Target CPU configuration option and uses it to select a -m option for gcc. 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 Zhang2013-05-051-11/+0
| | | | | | | | | 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>
* arch: improve definition of gcc mtune, mcpu, etc.Gravatar Thomas Petazzoni2012-11-151-0/+6
| | | | | | | | | | | | | | | | | | 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/+10
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>