linux-stable.git/arch/metag/kernel/setup.c, branch master

metag: Remove arch/metag/

2018-02-22T11:07:21+00:00

The earliest Meta architecture port of Linux I have a record of was an
import of a Meta port of Linux v2.4.1 in February 2004, which was worked
on significantly over the next few years by Graham Whaley, Will Newton,
Matt Fleming, myself and others.

Eventually the port was merged into mainline in v3.9 in March 2013, not
long after Imagination Technologies bought MIPS Technologies and shifted
its CPU focus over to the MIPS architecture.

As a result, though the port was maintained for a while, kept on life
support for a while longer, and useful for testing a few specific
drivers for which I don't have ready access to the equivalent MIPS
hardware, it is now essentially dead with no users.

It is also stuck using an out-of-tree toolchain based on GCC 4.2.4 which
is no longer maintained, now struggles to build modern kernels due to
toolchain bugs, and doesn't itself build with a modern GCC. The latest
buildroot port is still using an old uClibc snapshot which is no longer
served, and the latest uClibc doesn't build with GCC 4.2.4.

So lets call it a day and drop the Meta architecture port from the
kernel. RIP Meta.

Signed-off-by: James Hogan 
Link: https://lkml.kernel.org/r/95906b76-6ce1-3f84-eaba-c29b4ae952eb@roeck-us.net
Reviewed-by: Guenter Roeck 
Acked-by: Peter Zijlstra (Intel) 
Acked-by: Graham Whaley 
Cc: linux-metag@vger.kernel.org

metag: Remove unnecessary of_platform_populate with default match table

2016-06-23T20:00:26+00:00

After patch "of/platform: Add common method to populate default bus",
it is possible for arch code to remove unnecessary callers of
of_platform_populate with default match table.

Cc: James Hogan 
Signed-off-by: Kefeng Wang 
Signed-off-by: Rob Herring

of/fdt: consolidate built-in dtb section variables

2014-04-30T05:59:13+00:00

Unify the various architectures __dtb_start and __dtb_end definitions
moving them into of_fdt.h.

Signed-off-by: Rob Herring 
Acked-by: Vineet Gupta 
Acked-by: James Hogan 
Tested-by: Michal Simek 
Cc: Ralf Baechle 
Cc: Jonas Bonn 
Cc: Chris Zankel 
Cc: Max Filippov 
Cc: linux-metag@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux@lists.openrisc.net
Cc: linux-xtensa@linux-xtensa.org
Tested-by: Grant Likely 
Tested-by: Stephen Chivers

Merge tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2013-11-12T07:52:17+00:00

Pull devicetree updates from Rob Herring:
"DeviceTree updates for 3.13. This is a bit larger pull request than
usual for this cycle with lots of clean-up.

- Cross arch clean-up and consolidation of early DT scanning code.
- Clean-up and removal of arch prom.h headers. Makes arch specific
prom.h optional on all but Sparc.
- Addition of interrupts-extended property for devices connected to
multiple interrupt controllers.
- Refactoring of DT interrupt parsing code in preparation for
deferred probe of interrupts.
- ARM cpu and cpu topology bindings documentation.
- Various DT vendor binding documentation updates"

* tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits)
powerpc: add missing explicit OF includes for ppc
dt/irq: add empty of_irq_count for !OF_IRQ
dt: disable self-tests for !OF_IRQ
of: irq: Fix interrupt-map entry matching
MIPS: Netlogic: replace early_init_devtree() call
of: Add Panasonic Corporation vendor prefix
of: Add Chunghwa Picture Tubes Ltd. vendor prefix
of: Add AU Optronics Corporation vendor prefix
of/irq: Fix potential buffer overflow
of/irq: Fix bug in interrupt parsing refactor.
of: set dma_mask to point to coherent_dma_mask
of: add vendor prefix for PHYTEC Messtechnik GmbH
DT: sort vendor-prefixes.txt
of: Add vendor prefix for Cadence
of: Add empty for_each_available_child_of_node() macro definition
arm/versatile: Fix versatile irq specifications.
of/irq: create interrupts-extended property
microblaze/pci: Drop PowerPC-ism from irq parsing
of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code.
of/irq: Use irq_of_parse_and_map()
...

metag: handle low level kicks directly

2013-11-06T10:40:02+00:00

Kick interrupts trigger the LWK (low level kick) signal, usually handled
by the __TBIDoStdLWK() function which is the only handler inherited from
the bootloader. The LWK signal is converted either to a SWK (plain
software kick) or a SWS (software kick with an attached message).

Linux has kick_handler() to handle SWK and call registered kick handlers
(IPIs and inter-thread comms), but SWS is as far as I'm aware unused
with Linux.

Therefore remove that abstraction and have Linux handle LWK directly.
This will reduce kick latency slightly, and reduce our dependence on the
bootloader, which makes it easier to directly boot a kernel in QEMU
(particularly for SMP).

Signed-off-by: James Hogan

metag: move setup_machine_fdt declaration from prom.h

2013-10-10T01:04:03+00:00

Move setup_machine_fdt out of prom.h and into asm/setup.h in preparation
to remove prom.h.

Signed-off-by: Rob Herring 
Acked-by: Grant Likely 
Cc: James Hogan 
Cc: linux-metag@vger.kernel.org

metag: use common of_flat_dt_match_machine

2013-10-10T01:03:57+00:00

Convert metag to use the common of_flat_dt_get_machine_name function.

Signed-off-by: Rob Herring 
[james.hogan: fix missing arch_get_next_mach and const mismatch]
Reported-by: Guenter Roeck 
Signed-off-by: James Hogan

metag: use unflatten_and_copy_device_tree

2013-10-09T16:38:06+00:00

Use the common unflatten_and_copy_device_tree to copy the built-in FDT
out of init section.

Signed-off-by: Rob Herring 
Cc: James Hogan

metag/setup: Restrict scope for the capabilities variable

2013-06-13T11:55:29+00:00

Signed-off-by: Markos Chandras 
Signed-off-by: James Hogan

metag: of_platform_populate from arch generic code

2013-06-13T11:14:06+00:00

If no init_machine callback is provided, call of_platform_populate()
instead. This allows a board/SoC that only needs to call
of_platform_populate to omit the callback altogether.

Signed-off-by: James Hogan 
Cc: Grant Likely 
Cc: Rob Herring 
Cc: Arnd Bergmann 
Cc: devicetree-discuss@lists.ozlabs.org