buildroot/arch, branch 2016.05

toolchain: add coldfire support

2016-04-30T16:50:46+00:00

Add support for m68k/coldfire. A gcc patch is required to avoid gcc ICE. Signed-off-by: Waldemar Brodkorb Signed-off-by: Thomas Petazzoni

i386: properly define BR2_ARCH for all x86 subarchitectures

2016-04-21T21:05:28+00:00

We were not defining BR2_ARCH for two of the x86 subarchitecture, which means the architecture part of the GNU_TARGET_NAME tuple was empty, leading to weird build failures. This commit fixes that by defining the appropriate values. Fixes bug #8861. Signed-off-by: Thomas Petazzoni Reviewed-by: Arnout Vandecappelle (Essensium/Mind) Signed-off-by: Thomas Petazzoni

arch/x86: remove support for i386

2016-04-18T21:38:34+00:00

The Linux kernel doesn't even support i386 anymore, there is no NPTL support for i386 and uClibc-ng only supports NPTL on x86, so there is essentially no usable thread implementation. Most likely glibc and musl also don't support i386 either. So it's time to remove the support for this architecture variant. Signed-off-by: Thomas Petazzoni Reviewed-by: Arnout Vandecappelle (Essensium/Mind) Signed-off-by: Thomas Petazzoni

arch/arm: add Cortex-M4 entry

2016-03-20T14:37:30+00:00

This commit adds the option to select the Cortex-M4 ARM core, in the same family as Cortex-M3. This will be useful to enable the internal toolchain backend for this ARM core, and provide some defconfigs for Cortex-M4 platforms. Signed-off-by: Thomas Petazzoni Reviewed-by: Arnout Vandecappelle (Essensium/Mind) Reviewed-by: "Yann E. MORIN" Signed-off-by: Thomas Petazzoni

arch/arm: Cortex-M3 provides only Thumb-2

2016-03-20T14:37:24+00:00

The Cortex-M cores only support Thumb-2, not Thumb. In fact, Thumb-2 is a superset of Thumb, and we could have a single option for both in Buildroot, since -mthumb on ARMv4/v5 means original Thumb, while -mthumb on ARMv7 means Thumb 2. However, for clarity, it makes sense to have two separate options. But in this case, Cortex-M3 should not advertise that it supports Thumb, as in fact selecting Thumb would generate Thumb-2 code. Signed-off-by: Thomas Petazzoni Reviewed-by: "Yann E. MORIN" Reviewed-by: Arnout Vandecappelle (Essensium/Mind) Signed-off-by: Thomas Petazzoni

arch/arm: introduce and use BR2_ARM_CPU_ARMV7M

2016-03-20T14:37:07+00:00

All ARM cores should select a BR2_ARM_CPU_* option. Currently, the cortex-m3 does not, which this commit fixes by introducing a BR2_ARM_CPU_ARMV7M option. Signed-off-by: Thomas Petazzoni Acked-by: Arnout Vandecappelle (Essensium/Mind) Acked-by: "Yann E. MORIN" Signed-off-by: Thomas Petazzoni

arch/m68k: re-enable the architecture

2016-03-20T14:28:44+00:00

This allows to build a m68k toolchain with uClibc. Signed-off-by: Waldemar Brodkorb Signed-off-by: Thomas Petazzoni

arch/arm: add the cortex A17 variant supported by gcc 5.x

2016-02-22T08:31:42+00:00

Add the Cortex A17 variant. This core is considered a replacement of the Cortex A12 and is supported by gcc 5 / binutils 2.25+ Suggested-by: Ross Green Signed-off-by: Ezequiel Garcia Signed-off-by: Peter Korsgaard

arch: remove BR2_ARCH_HAS_ATOMICS option

2016-02-06T10:16:00+00:00

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 Acked-by: "Yann E. MORIN"

Add ARM11 MPCore CPU target support

2016-01-03T21:35:22+00:00

gcc differentiates the mpcore-with-vfp from the mcpore-without-vfp CPUs. The former is named just 'mpcore', while the latter is named 'mpcorenovfp'. We only add one entry, 'mpcore' and let the user select whether or not to use the VFP. We then name the CPU according to the user's selection. Signed-off-by: Sergi Granell Tested-by: "Yann E. MORIN" Acked-by: "Yann E. MORIN" Signed-off-by: Peter Korsgaard