litmus-rt.git/arch/xtensa/Kconfig, branch test

xtensa: xtfpga: fix hardware lockup caused by LCD driver

2015-02-27T04:55:29+00:00

LCD driver is always built for the XTFPGA platform, but its base address
is not configurable, and is wrong for ML605/KC705. Its initialization
locks up KC705 board hardware.

Make the whole driver optional, and its base address and bus width
configurable. Implement 4-bit bus access method.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov

Merge tag 'xtensa-for-next-20141213' of git://github.com/jcmvbkbc/linux-xtensa into for_next

2014-12-16T04:10:39+00:00

Xtensa improvements for 3.19:

- fix permissions for kmapped pages so that copy_to_user_page works with
  them;
- add power management menu to Kconfig to allow use of runtime PM.

xtensa: add power management menu to Kconfig

2014-12-09T00:22:51+00:00

This allows using runtime power management feature on Xtensa.

Signed-off-by: Max Filippov

xtensa: remove s6000 variant and s6105 platform

2014-10-21T09:29:01+00:00

The Stretch s6000 family support has been merged into mainline 5 years
ago. There appear to be no users of this code since nobody complained
that there is a merge error preventing compilation.

Apart from the s6105 IP camera reference design there are no s6000 devices
known to ever have run Linux and as the chips are out of production there
probably never will be. The successor s7000 no longer uses an Xtensa core
for the OS.

Let's remove the code until someone is found who actually needs it.

Signed-off-by: Daniel Glöckner 
Signed-off-by: Max Filippov

xtensa: make PLATFORM_DEFAULT_MEM parameters configurable

2014-10-21T09:28:59+00:00

This allows using xtfpga platform with both MMU and noMMU cores.

Signed-off-by: Max Filippov

xtensa: nommu: set up cache and atomctl in initialize_mmu

2014-10-21T09:28:56+00:00

initialize_mmu sets up atomctl SR which is needed for s32c1i to function
correctly even in noMMU configurations. It's also a good place to set up
caching attributes of physical memory.

Allow enabling INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX in noMMU
configurations for setting up atomctl and cache attributes.

Signed-off-by: Max Filippov

xtensa: xtfpga: only select ethoc when ethernet is available

2014-10-05T23:23:53+00:00

Otherwise we get the following build warning:
    (XTENSA_PLATFORM_XTFPGA) selects ETHOC which has unmet direct
    dependencies (NETDEVICES && ETHERNET && HAS_IOMEM && HAS_DMA)

Signed-off-by: Max Filippov

xtensa: ISS: add BLOCK dependency to BLK_DEV_SIMDISK

2014-10-05T23:23:51+00:00

Signed-off-by: Max Filippov

xtensa: deprecate fast_xtensa and fast_spill_registers syscalls

2014-08-14T07:59:33+00:00

These syscalls are not used by userspace tools for some time now, and
they have issues when called with invalid arguments. It's not worth
changing signal delivery mechanism as we don't expect any new users for
these syscalls. Let's keep them for backwards compatibility under #ifdef,
disabled by default.

Signed-off-by: Max Filippov

xtensa: remove orphan MATH_EMULATION symbol

2014-08-14T07:59:12+00:00

Signed-off-by: Max Filippov