Commit Graph

6 Commits

Author SHA1 Message Date
Guido Martínez
29563047e0 arch: tidy up mmu config
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>
2015-06-09 22:49:39 +02:00
Max Filippov
083ec2df6c arch/Config.in.xtensa: provide BR2_ENDIAN symbol
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>
2015-05-05 22:44:04 +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
Chris Zankel
fdd5bc948e xtensa: use uppercase for configurations and modified overlay structure
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>
2012-11-21 11:08:50 +01:00
Chris Zankel
d8792a04ca xtensa: support configurable processor configurations
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>
2012-11-15 16:39:48 +01:00
Chris Zankel
75720db391 xtensa: add support for the Xtensa architecture
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>
2012-11-15 16:39:43 +01:00