Commit Graph

107 Commits

Author SHA1 Message Date
Yann E. MORIN
80be8753d5 arch/avr32: decommission for real
Now that we have absolutely zero reference to the avr32 architecture, we
can now really decommission the symbol.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-02-14 17:46:42 +01:00
Yann E. MORIN
a46007daa7 arch: kill avr32
avr32 was slated for removal in 2015.02. Make it so!

This patch only definitively hides the symbol. When all references
to it are eradicated (to come in followup patches), we'll eventually
kill the symbol altogether.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-02-14 17:39:50 +01:00
Guido Martínez
a87f5806ed arm: conditionally support regular ARM instructions
Until now, all ARM processors supported the original ARM instructions.
However, the Cortex-M variants don't support them, and support only
Thumb/Thumb2 modes.

So, make a Kconfig option for ARM support and use it.

[Thomas:
  - Remove the dependency in the choice between ARM/Thumb/Thumb-2,
    because basically the choice is now always visible.
  - Replace the BR2_ARM_INSTRUCTIONS_ARM_CHOICE choice option directly
    by BR2_ARM_INSTRUCTIONS_ARM, instead of having this blind option
    defined separately. This means the choice is now always visible,
    even when only the ARM instruction set is supported.]

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-02-02 18:32:34 +01:00
Thomas Petazzoni
158001f57b Turn the static lib option into a choice with more options
This commit turns the single static option into a choice, which offers
various possibilities:

 1. Build and use static libraries only;
 2. Build both shared and static libraries, but use shared libraries;
 3. Build and use shared libraries only.

On most platforms, (2) is currently the default, and kept as the
default in this commit. Of course, on certain platforms (Blackfin,
m68k), only option (1) will be available.

In addition to the introduction of the Config.in options, this commit
also:

 * Removes the 'select BR2_STATIC_LIBS' from 'BR2_BINFMT_FLAT', since
   with the use of a choice, we are guaranteed that BR2_STATIC_LIBS
   will be selected when the binary format is BR2_BINFMT_FLAT, since
   BR2_STATIC_LIBS will be the only possible solution in the choice.

 * Changes package/Makefile.in to use the proper
   --{enable,disable}-{shared,static} options for autotools packages.

[Thomas: remove useless empty newline right after 'choice'. Noticed by
Yann E. Morin.]

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2014-12-12 00:09:02 +01:00
Thomas Petazzoni
375c77ad4e arch: remove superfluous arch dependencies on BR2_BINFMT_FLAT_*
As noted by Yann E. Morin, those dependencies are unneeded, since FLAT
can anyway only be used on m68k and Blackfin.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2014-12-11 22:51:12 +01:00
Thomas Petazzoni
b85837e5d6 arch: introduce BR2_BINFMT_SUPPORTS_SHARED
In preparation for the refactoring of the static/shared library
support, we add a BR2_BINFMT_SUPPORTS_SHARED hidden option that binary
formats supporting shared libraries should select.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2014-12-11 22:50:40 +01:00
Thomas Petazzoni
c1a38829e7 arch: ensure BR2_BINFMT_ELF is really used
Currently, the binary format choice is only shown for the Blackfin and
m68k architectures, since we assume that all other architectures are
using the ELF binary format. However, due to this, the BR2_BINFMT_ELF
symbol is in fact not set to 'y' for those architectures that use the
ELF format.

This will be causing problems for the refactoring of the static/shared
library support, as we will need to know if the binary format supports
shared libraries or not.

Therefore, we simply make the choice visible on all architectures,
even if it means that on many architectures no other choice than ELF
will be available.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2014-12-11 22:49:14 +01:00
Thomas Petazzoni
c149083f93 arch: FDPIC is not supported on m68k
The current binfmt selection in arch/Config.in allows to select FDPIC
on m68k, which is incorrect. This commit fixes that, and makes sure
FDPIC is the default on Blackfin, while FLAT is the default on m68k.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2014-12-11 22:48:57 +01:00
Thomas Petazzoni
665e13c85e Rename BR2_PREFER_STATIC_LIB to BR2_STATIC_LIBS
Since a while, the semantic of BR2_PREFER_STATIC_LIB has been changed
from "prefer static libraries when possible" to "use only static
libraries". The former semantic didn't make much sense, since the user
had absolutely no control/idea of which package would use static
libraries, and which packages would not. Therefore, for quite some
time, we have been starting to enforce that BR2_PREFER_STATIC_LIB
should really build everything with static libraries.

As a consequence, this patch renames BR2_PREFER_STATIC_LIB to
BR2_STATIC_LIBS, and adjust the Config.in option accordingly.

This also helps preparing the addition of other options to select
shared, shared+static or just static.

Note that we have verified that this commit can be reproduced by
simply doing a global rename of BR2_PREFER_STATIC_LIB to
BR2_STATIC_LIBS plus adding BR2_PREFER_STATIC_LIB to Config.in.legacy.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2014-12-11 22:48:13 +01:00
Gustavo Zacarias
cd88e49cd7 arch/powerpc: add fsl e5500 and e6500 support
Add Freescale E5500 and E6500 core support.
These can go in 32 or 64-bit mode.
I'm not aware of these being able to boot in LE mode so filter that out
until we get some feedback on it.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Reviewed-by: "Matt Weber" <matthew.weber@rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2014-12-07 23:46:41 +01:00
Gustavo Zacarias
dd45fe0efb arch/mips: remove deprecated mips1/2/3/4 support
Remove the support for generating mips1/2/3/4 code since it has been
deprecated for more than a year now.
Also remove the unnecessary kludges in packages for it.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Acked-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-12-01 20:06:32 +01:00
Peter Korsgaard
80e4060908 arch/Config.in.x86: drop BR2_x86_generic
The fuzzy generic x86 variant doesn't make much sense in the context of
Buildroot, and the recent change to use -march instead of -mtune broke it.

From the GCC manual:

https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/i386-and-x86-64-Options.html#i386-and-x86-64-Options:

-mtune=cpu-type
    Tune to cpu-type everything applicable about the generated code,
    except for the ABI and the set of available instructions. While
    picking a specific cpu-type schedules things appropriately for that
    particular chip, the compiler does not generate any code that cannot
    run on the default machine type unless you use a -march=cpu-type
    option. For example, if GCC is configured for i686-pc-linux-gnu then
    -mtune=pentium4 generates code that is tuned for Pentium 4 but still
    runs on i686 machines.

    The choices for cpu-type are the same as for -march. In addition,
    -mtune supports 2 extra choices for cpu-type:

    ‘generic’
        Produce code optimized for the most common IA32/AMD64/EM64T
        processors. If you know the CPU on which your code will run,
        then you should use the corresponding -mtune or -march option
        instead of -mtune=generic. But, if you do not know exactly what
        CPU users of your application will have, then you should use
        this option.

        As new processors are deployed in the marketplace, the behavior
        of this option will change. Therefore, if you upgrade to a newer
        version of GCC, code generation controlled by this option will
        change to reflect the processors that are most common at the
        time that version of GCC is released.

        There is no -march=generic option because -march indicates the
        instruction set the compiler can use, and there is no generic
        instruction set applicable to all processors. In contrast,
        -mtune indicates the processor (or, in this case, collection of
        processors) for which the code is optimized.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-11-07 19:51:06 +01:00
Thomas Petazzoni
bc48f2312e arch: remove the BR2_GCC_TARGET_TUNE option
The BR2_GCC_TARGET_TUNE option is now unused, so we can get rid of it.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-11-07 00:16:47 +01:00
Thomas Petazzoni
db5e6d6c14 arch/m68k: get rid of BR2_GCC_TARGET_TUNE
On m68k, we are passing the exact same values of BR2_GCC_TARGET_ARCH
and BR2_GCC_TARGET_TUNE, which is redundant. Therefore, this commit
removes the usage of BR2_GCC_TARGET_TUNE on m68k.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-11-07 00:14:13 +01:00
Thomas Petazzoni
75418c4cf6 arch/powerpc: get rid of BR2_GCC_TARGET_TUNE
According to the gcc documentation for PowerPC options:

'-mtune=CPU_TYPE'
     Set the instruction scheduling parameters for machine type
     CPU_TYPE, but do not set the architecture type, register usage, or
     choice of mnemonics, as '-mcpu=CPU_TYPE' would.  The same values
     for CPU_TYPE are used for '-mtune' as for '-mcpu'.  If both are
     specified, the code generated will use the architecture, registers,
     and mnemonics set by '-mcpu', but the scheduling parameters set by
     '-mtune'.

In the case of Buildroot where we only target a specific system, using
-mtune therefore doesn't make much sense, and using -mcpu would be
more appropriate. As a consequence, this patch makes PowerPC use
BR2_GCC_TARGET_CPU instead of BR2_GCC_TARGET_TUNE.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-11-07 00:13:49 +01:00
Thomas Petazzoni
a5023c5204 arch/sparc: get rid of BR2_GCC_TARGET_TUNE
On SPARC, BR2_GCC_TARGET_TUNE was only used for one specific case, the
BR2_sparc_v8. There is actually no reason to not use
BR2_GCC_TARGET_CPU instead for this, as all values supported for
-mtune are also supported for -mcpu. Therefore, the only
BR2_GCC_TARGET_TUNE case is moved as a BR2_GCC_TARGET_CPU case.

[Peter: fixup merge conflict after 'sparc: Add leon3 cpu type and remove sparc{s,h}fleon{,v8}]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-11-07 00:13:08 +01:00
Thomas Petazzoni
6bec1d5191 arch/x86: get rid of BR2_GCC_TARGET_TUNE
According to the gcc documentation, -march implies -mtune on x86, so
defining both BR2_GCC_TARGET_ARCH and BR2_GCC_TARGET_TUNE is
redundant. Therefore, this commit removes the definition of
BR2_GCC_TARGET_TUNE on x86.

However, while doing so, it adds one new case for BR2_GCC_TARGET_ARCH:
using -march=generic when BR2_x86_generic is selected.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-11-07 00:09:21 +01:00
Thomas Petazzoni
fd828fd98f arch/arm: remove BR2_GCC_TARGET_ARCH definitions on ARM
On ARM, we were defining both the CPU type and the architecture
variant. However, depending on the version of gcc, a given combination
of (CPU, architecture) may not be the same. Since the architecture
variant is implied by the CPU type, given the former is not necessary,
and we can simply specify the latter.

>From the gcc documentation:

  This specifies the name of the target ARM processor. GCC uses this
  name to derive the name of the target ARM architecture (as if
  specified by -march) and the ARM processor type for which to tune
  for performance (as if specified by -mtune). Where this option is
  used in conjunction with -march or -mtune, those options take
  precedence over the appropriate part of this option.

Note that we verified that for all BR2_GCC_TARGET_ARCH value that
existed, a proper BR2_GCC_TARGET_CPU value is defined.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-11-07 00:07:34 +01:00
Thomas Petazzoni
24dfbe71e0 arch/arm: do not distinguish revisions of ARM1136JF-S
In commit 88cf3bb917
("arch/Config.in.arm: Use armv6k for arm1136jf-s rev1"), Benoît
Thébaudeau added separate options for the revision 0 and revision 1 of
the ARM1136JF-S processor, so that different -march values could be
used (armv6j for revision 0, armv6k for revision 1).

However, this is preventing the removal of the BR2_GCC_TARGET_ARCH
option, which we need to do to give only the CPU type to gcc, and let
it decide the architecture variant that matches. This is because this
story of revision 0 vs. revision 1 is the only case where -mcpu
doesn't fully define the CPU.

Moreover, a quick test with gcc shows that -march=armv6j
-mcpu=arm1136jf-s is accepted, while -march=armv6k -mcpu=arm1136jf-s
makes gcc complain: " warning: switch -mcpu=arm1136jf-s conflicts with
-march=armv6k switch".

In addition, gcc 5 will apparently no longer allow to pass all of
--with-arch, --with-cpu and --with-tune, so we will anyway have to
rely only on one of them.

As a consequence, this commit basically reverts
88cf3bb917 and provides only one option
for ARM1136JF-S. If the two revisions are really different, then they
should be supported in upstream gcc with different -mcpu values.

Note that the removal of the two options should not break existing
full .config, since the hidden option BR2_arm1136jf_s becomes again a
visible option to select the CPU.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-11-07 00:05:11 +01:00
Alexey Brodkin
f787b51af5 arc: add support of ARC HS38 core
Synopsys has recently announced its new ARC HS38 core that is capable of
running Linux -
http://www.synopsys.com/dw/ipdir.php?ds=arc-hs38-processor

ARC HS38 is based on ARCv2 ISA and requires special settings of gcc and
libc.

Also in case of HS38 atomic extensions (LLOCK/SCOND instructions) are
built-in by default, so enabling atomic extensions in Buildroot as well.

This commit adds support of the core in buildroot.

[Peter: string type, so must be in quotes as noted by Yann]
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Anton Kolesov <anton.kolesov@synopsys.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-11-02 22:25:27 +01:00
Alexey Brodkin
11f078c22f arc: add explicit selection of CPU templates ARC 750D and ARC770D
This separation allows to specify unique options and features for each
CPU.

For example ARC 770D has LLOCK/SCOND instructions built-in by default.
Also this new scheme simplifies selection of proper configuration for
users - preconfigured options now match templates for ARC CPUs.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Anton Kolesov <akolesov@synopsys.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-11-02 22:20:22 +01:00
Andreas Larsson
43b78e7285 arch: sparc: Add leon3 cpu type and remove sparc{s,h}fleon{,v8}
There is support for -mcpu=leon3 from gcc 4.8.3. Use this for LEON systems
instead of the non-mainline targets sparcsfleon, sparchfleon, sparcsfleonv8, and
sparchfleonv8.

[Thomas: add Config.in.legacy handling for the removed options.]

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2014-10-30 21:28:39 +01:00
Thomas Petazzoni
ece7daaa10 arch/arm: add blind options to know the ARM architecture
In preparation to the removal of BR2_GCC_TARGET_ARCH for ARM, this
commit introduces a number of blind options for each ARM architecture,
so that packages/toolchains that had dependencies using
BR2_GCC_TARGET_ARCH can continue to express their dependencies. It can
also be used to simplify package dependencies that were using the
individual ARM core options.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2014-10-25 12:35:00 +02:00
Thomas Petazzoni
d60489a6e5 arch: remove BR2_arm10t
The BR2_arm10t option is not correct as it references an ARM family,
while other options indicate a specific ARM core. The ARM cores in
ARM10 family are ARM1020E, ARM1022E and ARM1026EJ-S according to
Wikipedia. However, those are clearly very rare, and Wikipedia only
indicates two Conexant ADSL-related SoC as being part of this family
of ARM cores. Therefore, this commit removes this ARM family.

[Peter: remove nettle.mk reference as pointed out by Yann]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-09-18 22:09:05 +02:00
Thomas Petazzoni
ad0e217bb2 arch: remove BR2_arm920 reference
The BR2_GCC_TARGET_CPU defines a value for the BR2_arm920 case, but
this option does not exist. Therefore, this commit removes one line of
dead code.

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 <peter@korsgaard.com>
2014-09-18 22:05:11 +02:00
Yann E. MORIN
21c8f1e947 arch/arc: fix atomics selection
Due to a kconfig limitation, we can't select a no-prompt symbol that
gets its dependencies by being conditionally re-defined in one or more
if-blocks, like we currently do for BR2_ARCH_HAS_ATOMICS.

As a workaround to this issue, we just redefine that symbol in the arc
if-block, like we do for all other architectures, except that in the arc
case, the default value is conditional.

Reported-by: Anton Kolesov <Anton.Kolesov@synopsys.com>
[yann.morin.1998@free.fr: indepently re-done a patch similar to the one
 Thomas made on his own]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-09-11 22:53:08 +02:00
Yann E. MORIN
a690fea1ac arch: remove no-longer default on atomics option
Now that all architectures explicitly select this option when it makes
sense, there is no need to have a default value.

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>
2014-08-18 11:03:36 +02:00
Yann E. MORIN
6a1f8b712d arch/xtensa: always has atomic ops
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>
2014-08-18 11:03:28 +02:00
Yann E. MORIN
4f07578a86 arch/x86: all x86 but i386 has atomics operations
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>
2014-08-18 11:03:16 +02:00
Yann E. MORIN
da86e94f80 arch/sparc: always has atomic ops
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>
2014-08-18 11:03:09 +02:00
Yann E. MORIN
5d22b6e06c arch/sh: always has atomic ops
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>
2014-08-18 11:03:02 +02:00
Yann E. MORIN
84e8a337d5 arch/powerpc: always has atomic ops
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>
2014-08-18 11:02:57 +02:00
Yann E. MORIN
700080c494 arch/nios2: always has atomic ops
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>
2014-08-18 11:02:51 +02:00
Yann E. MORIN
4e99ab9bd7 arch/mips: always has atomic ops
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>
2014-08-18 11:02:41 +02:00
Yann E. MORIN
85da209efb arch/microblaze: always has atomic ops
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>
2014-08-18 11:02:31 +02:00
Yann E. MORIN
0d79bc13ec arch/m68k: always has atomic ops
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>
2014-08-18 11:01:40 +02:00
Yann E. MORIN
5b98309f59 arch/bfin: always has atomic ops
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>
2014-08-18 11:01:31 +02:00
Yann E. MORIN
116f63f4d7 arch/avr32: always has atomic ops
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>
2014-08-18 11:01:22 +02:00
Yann E. MORIN
b8a8263858 arch/arm: always has atomic ops
armv6 and above all have one sort of atomic ops or another. For armv5
and below, they are emulated, either as a kernel trap, a kernel VDSO,
or compiler intrinsics.

Aarch64 is just armv8, so make it a single commit. ;-)

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>
2014-08-18 11:00:51 +02:00
Yann E. MORIN
6172ceb3cf toolchain: drop the now-unused old BR2_TOOLCHAIN_HAS_ATOMIC_INTRINSICS
It's now been replaced with BR2_ARCH_HAS_ATOMICS, annd all packages have
been changed to use that instead.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Anton Kolesov <Anton.Kolesov@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-08-18 10:57:55 +02:00
Yann E. MORIN
1b5f0fc8df arch: add an option to specify if the arch has atomic ops
The fact that atomic operations are available is not really a
specificity of the toolchain, but rather of the architecture.

So, add a new option that architectures that have atomic operations
can select. This in turn selects the current toolchain atomic option,
until all packages have been converted, at which point the old
toolchain option can be removed.

Reported-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Anton Kolesov <Anton.Kolesov@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-08-18 10:56:35 +02:00
Anton Kolesov
cbffd50561 toolchain: Add config option for atomic intrinsics
GCC has several builtin functions that implement atomic operations. Those
functions are architecture specific and may not be implemented by the
specific toolchain. In case of GCC for ARC those functions rely on
LLOCK/SCOND instructions which are optional in ARC CPU's. If ARC CPU doesn't
support those instructions but software tries to use them, then application
will be aborted with Illegal instruction exception. To avoid confusion user
should first specify that their CPU supports atomic extension, which will
allow selection of packages that use builtin atomic functions.

Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2014-08-03 11:20:47 +02:00
Peter Korsgaard
c2444e94ce arch: avr32 should only get removed for the 2015.02 release
As discussed on the list.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-07-10 22:05:55 +02:00
Thomas Petazzoni
01efcf84fe arch: deprecate the AVR32 architecture
The AVR32 architecture from Atmel is obsolete since a long time, not
supported upstream in most of the toolchain components (requires a
special version of gcc, an old version of uClibc, etc.). Until
February, Simon Dawson was making an excellent job at maintaining
AVR32 in Buildroot, and fixing all the issues caused by this
architecture. However, Simon focus has changed, and despite his call
for a new maintainer for AVR32 in Buildroot, nobody stepped up.

The issue of maintaining AVR32 is becoming worse and worse, so this
patch proposes to deprecate it for 2014.08, but keeping the support
around, to remove it for sure in 2014.11.

Cc: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-07-10 16:49:36 +02:00
Cody P Schafer
7e674dfa4f powerpc: add powerpc64 and powerpc64le support
This enables powerpc64 and powerpc64le. Currently, le needs at least
glibc 2.19 and gcc 4.9.0. For gdb, 7.7.1 works (added in an earlier
patch).

[Peter: also disallow gcc 4.8 for ppc64le]
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-05-26 21:48:33 +02:00
Cody P Schafer
32a471824b powerpc: remove unneeded dependencies
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-05-26 21:22:09 +02:00
Cody P Schafer
71badded4b powerpc: add power{4,5,6,7,8} cpus
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-05-26 21:18:10 +02:00
Cody P Schafer
32025e99dd powerpc: mark 32-bit only powerpc cpus to prep for adding powerpc64 support
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-05-26 21:17:26 +02:00
Cody P Schafer
40e58dab0c powerpc: add BR2_POWERPC_CPU_HAS_ALTIVEC to replace adhoc deps/checks
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-05-26 21:14:08 +02:00
Cody P Schafer
b4c824562b powerpc: add BR2_POWERPC_CPU_HAS_SPE to replace adhoc deps/checks
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-05-26 14:28:59 +02:00