kernel/arm: remove unneeded call to get_commpage_image

Change-Id: Id978ebea32ea45500ed1f30f24eaeb0017487133
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6614
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

kernel/arm: remove unneeded call to arch_thread_set_current_thread

Change-Id: I1026c733033458ed02fab9e9e61f041441e56d1e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6615
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

kernel/arm: remove unused barrier functions

Change-Id: I45c863c4ac027cc3ec5bb1922c22c58433603875
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6613
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

arm: remove unused variables from arch_kernel_args

Change-Id: Ice2be644142b646205648f44fb5bce5e9848e69d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6192
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
Tested-by: Automation <automation@haiku-os.org>

kernel/arm: add memory barriers for page table ops

Introduce memory barriers according to ARMARM,
section G.5.3 TLB maintenance operations and barriers

Sequence for mapping memory in (both L1 and L2):
* DSB
* Invalidate i-cache (TODO)
* Insert new entry in page directory / page table
* DSB
* ISB

Sequence for mapping memory out:
* Remove page table entry
* DSB
* Invalidate TLB entry
* DSB
* ISB

Sequence for updating a page table entry:
* Update page table entry
* DSB
* Invalidate TLB entry
* Invalidate branch predictor (TODO)
* DSB
* ISB

Note: i-cache invalidation and branch predictor invalidation is
not implemented yet as this commit focuses on implementing memory
barriers.

Change-Id: I192fa80f6b43117236a4be6fa8c988afca90e015
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5241
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>

ARM: Add TODO on barrier calls, we might need to do more here

They look suspiciously empty.

arm: Miscellaneous build fixes

* Use atomic_get_and_set for return value
* Atomics are no longer volatile
* Add missing arch_cpu_pause stub
* Move arch_cpu_idle to arch_cpu header to match
other architectures

ARM: implement arch_cpu_user_memcpy/memset/strlcpy functions

Remove the dummies from the C code and implement them in assembly,
due to the label referencing issues with the fault handler.

This code is ripe for optimisation, my ARM assembly is pretty
basic ;)

Does work though, and gets us one step closer to a full arch.

Add TODO note with respect to needed asm implementations.

kernel arm: Quick style cleanup; No functional change

* Fix ARM kernel compilation

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40926 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Implement ARM TLB/cache functions
* General code cleanup...



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39010 a95241bf-73f2-0310-859d-f6bbb57e9c96

[GSoC] [ARM] Patch by Johannes Wischert.
- stubbed out many arch kernel functions (borrowed from other archs),
- partially implement ELF relocations code, enough to load the kernel,
- move uart.c to kernel sources and use the same one for the loader,
- default implementation for gensyscalls,
- assembler code functions for interrupt masking (enable/disable/restore/query).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32327 a95241bf-73f2-0310-859d-f6bbb57e9c96

arm: Miscellaneous build fixes

* Use atomic_get_and_set for return value
* Atomics are no longer volatile
* Add missing arch_cpu_pause stub
* Move arch_cpu_idle to arch_cpu header to match
other architectures

ARM: implement arch_cpu_user_memcpy/memset/strlcpy functions

Remove the dummies from the C code and implement them in assembly,
due to the label referencing issues with the fault handler.

This code is ripe for optimisation, my ARM assembly is pretty
basic ;)

Does work though, and gets us one step closer to a full arch.

Add TODO note with respect to needed asm implementations.

kernel arm: Quick style cleanup; No functional change

* Fix ARM kernel compilation

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40926 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Implement ARM TLB/cache functions
* General code cleanup...



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39010 a95241bf-73f2-0310-859d-f6bbb57e9c96

[GSoC] [ARM] Patch by Johannes Wischert.
- stubbed out many arch kernel functions (borrowed from other archs),
- partially implement ELF relocations code, enough to load the kernel,
- move uart.c to kernel sources and use the same one for the loader,
- default implementation for gensyscalls,
- assembler code functions for interrupt masking (enable/disable/restore/query).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32327 a95241bf-73f2-0310-859d-f6bbb57e9c96