[GIT PULL] arch/nios2 for v3.19

[GIT PULL] arch/nios2 for v3.19

[Ley Foon Tan]

Hi Linus

Here is the Linux port for Nios II processor (from Altera) arch/nios2/
tree for v3.19. The patchset has been discussed on the kernel
mailing lists since April and has gone through 6 revisions of review.
The additional changes since then have been mostly further cleanups and
fixes when merged with other trees.

The arch code is in arch/nios2 and one asm-generic change (acked by
Arnd).

Please consider pulling. 

Regards
Ley Foon


The following changes since commit b2776bf7149bddd1f4161f14f79520f17fc1d71d:

  Linux 3.18 (2014-12-07 14:21:05 -0800)

are available in the git repository at:

  git://git.rocketboards.org/linux-socfpga-next.git tags/nios2-v3.19-rc1

for you to fetch changes up to 2b2b4074e647f4e88c9601e14f834f4a3a379d2a:

  nios2: Make NIOS2_CMDLINE_IGNORE_DTB depend on CMDLINE_BOOL (2014-12-08 12:56:14 +0800)

----------------------------------------------------------------
Introducing Linux port for Nios II processor (for v3.19)

This adds core architecture support for Nios II processor, 
followed by some later miscellaneous nios2 changes. 

----------------------------------------------------------------
Dmitry Torokhov (1):
      nios2: fix error handling of irq_of_parse_and_map

Ley Foon Tan (33):
      asm-generic: add generic futex for !CONFIG_SMP
      nios2: Assembly macros and definitions
      nios2: Kernel booting and initialization
      nios2: Exception handling
      nios2: Traps exception handling
      nios2: Memory management
      nios2: I/O Mapping
      nios2: MMU Fault handling
      nios2: Page table management
      nios2: Process management
      nios2: Cache handling
      nios2: TLB handling
      nios2: Interrupt handling
      nios2: DMA mapping API
      Add ELF machine define for Nios2
      nios2: ELF definitions
      nios2: System calls handling
      nios2: Signal handling support
      nios2: Library functions
      nios2: Device tree support
      nios2: Time keeping
      nios2: Cpuinfo handling
      nios2: Miscellaneous header files
      nios2: Nios2 registers
      nios2: Module support
      nios2: ptrace support
      MAINTAINERS: Add nios2 maintainer
      Documentation: Add documentation for Nios2 architecture
      nios2: Build infrastructure
      nios2: remove unnecessary space before define
      nios2: remove include asm-generic/iomap.h from io.h
      nios2: move include asm-generic/io.h to end of file
      nios2: include linux/type.h in io.h

Tobias Klauser (6):
      nios2: Use IS_ENABLED instead of #ifdefs to check config symbols
      nios2: Remove unused extern declaration of shm_align_mask
      nios2: Remove write-only struct member from nios2_timer
      nios2: asm-offsets: Remove unused definition TI_TASK
      nios2: Add missing NR_CPUS to Kconfig
      nios2: Make NIOS2_CMDLINE_IGNORE_DTB depend on CMDLINE_BOOL

 Documentation/devicetree/bindings/nios2/nios2.txt |  62 +++
 Documentation/devicetree/bindings/nios2/timer.txt |  19 +
 Documentation/nios2/README                        |  23 +
 MAINTAINERS                                       |   7 +
 arch/nios2/Kconfig                                | 206 ++++++++
 arch/nios2/Kconfig.debug                          |  17 +
 arch/nios2/Makefile                               |  73 +++
 arch/nios2/boot/Makefile                          |  52 ++
 arch/nios2/boot/dts/3c120_devboard.dts            | 164 ++++++
 arch/nios2/boot/install.sh                        |  52 ++
 arch/nios2/boot/linked_dtb.S                      |  19 +
 arch/nios2/configs/3c120_defconfig                |  77 +++
 arch/nios2/include/asm/Kbuild                     |  66 +++
 arch/nios2/include/asm/asm-macros.h               | 309 +++++++++++
 arch/nios2/include/asm/asm-offsets.h              |  20 +
 arch/nios2/include/asm/cache.h                    |  36 ++
 arch/nios2/include/asm/cacheflush.h               |  52 ++
 arch/nios2/include/asm/checksum.h                 |  78 +++
 arch/nios2/include/asm/cmpxchg.h                  |  61 +++
 arch/nios2/include/asm/cpuinfo.h                  |  57 +++
 arch/nios2/include/asm/delay.h                    |  21 +
 arch/nios2/include/asm/dma-mapping.h              | 140 +++++
 arch/nios2/include/asm/elf.h                      | 101 ++++
 arch/nios2/include/asm/entry.h                    | 120 +++++
 arch/nios2/include/asm/io.h                       |  61 +++
 arch/nios2/include/asm/irq.h                      |  28 +
 arch/nios2/include/asm/irqflags.h                 |  72 +++
 arch/nios2/include/asm/linkage.h                  |  25 +
 arch/nios2/include/asm/mmu.h                      |  16 +
 arch/nios2/include/asm/mmu_context.h              |  66 +++
 arch/nios2/include/asm/mutex.h                    |   1 +
 arch/nios2/include/asm/page.h                     | 109 ++++
 arch/nios2/include/asm/pgalloc.h                  |  86 ++++
 arch/nios2/include/asm/pgtable-bits.h             |  35 ++
 arch/nios2/include/asm/pgtable.h                  | 310 +++++++++++
 arch/nios2/include/asm/processor.h                | 103 ++++
 arch/nios2/include/asm/ptrace.h                   |  33 ++
 arch/nios2/include/asm/registers.h                |  71 +++
 arch/nios2/include/asm/setup.h                    |  38 ++
 arch/nios2/include/asm/signal.h                   |  22 +
 arch/nios2/include/asm/string.h                   |  24 +
 arch/nios2/include/asm/switch_to.h                |  31 ++
 arch/nios2/include/asm/syscall.h                  | 138 +++++
 arch/nios2/include/asm/syscalls.h                 |  25 +
 arch/nios2/include/asm/thread_info.h              | 120 +++++
 arch/nios2/include/asm/timex.h                    |  24 +
 arch/nios2/include/asm/tlb.h                      |  34 ++
 arch/nios2/include/asm/tlbflush.h                 |  46 ++
 arch/nios2/include/asm/traps.h                    |  19 +
 arch/nios2/include/asm/uaccess.h                  | 231 +++++++++
 arch/nios2/include/asm/ucontext.h                 |  32 ++
 arch/nios2/include/uapi/asm/Kbuild                |   4 +
 arch/nios2/include/uapi/asm/byteorder.h           |  22 +
 arch/nios2/include/uapi/asm/elf.h                 |  67 +++
 arch/nios2/include/uapi/asm/ptrace.h              | 120 +++++
 arch/nios2/include/uapi/asm/sigcontext.h          |  28 +
 arch/nios2/include/uapi/asm/signal.h              |  23 +
 arch/nios2/include/uapi/asm/swab.h                |  37 ++
 arch/nios2/include/uapi/asm/unistd.h              |  25 +
 arch/nios2/kernel/Makefile                        |  24 +
 arch/nios2/kernel/asm-offsets.c                   |  87 ++++
 arch/nios2/kernel/cpuinfo.c                       | 197 +++++++
 arch/nios2/kernel/entry.S                         | 555 ++++++++++++++++++++
 arch/nios2/kernel/head.S                          | 175 +++++++
 arch/nios2/kernel/insnemu.S                       | 592 ++++++++++++++++++++++
 arch/nios2/kernel/irq.c                           |  93 ++++
 arch/nios2/kernel/misaligned.c                    | 256 ++++++++++
 arch/nios2/kernel/module.c                        | 138 +++++
 arch/nios2/kernel/nios2_ksyms.c                   |  33 ++
 arch/nios2/kernel/process.c                       | 258 ++++++++++
 arch/nios2/kernel/prom.c                          |  65 +++
 arch/nios2/kernel/ptrace.c                        | 166 ++++++
 arch/nios2/kernel/setup.c                         | 218 ++++++++
 arch/nios2/kernel/signal.c                        | 323 ++++++++++++
 arch/nios2/kernel/sys_nios2.c                     |  53 ++
 arch/nios2/kernel/syscall_table.c                 |  29 ++
 arch/nios2/kernel/time.c                          | 308 +++++++++++
 arch/nios2/kernel/traps.c                         | 185 +++++++
 arch/nios2/kernel/vmlinux.lds.S                   |  75 +++
 arch/nios2/lib/Makefile                           |   8 +
 arch/nios2/lib/delay.c                            |  52 ++
 arch/nios2/lib/memcpy.c                           | 202 ++++++++
 arch/nios2/lib/memmove.c                          |  82 +++
 arch/nios2/lib/memset.c                           |  81 +++
 arch/nios2/mm/Makefile                            |  14 +
 arch/nios2/mm/cacheflush.c                        | 271 ++++++++++
 arch/nios2/mm/dma-mapping.c                       | 186 +++++++
 arch/nios2/mm/extable.c                           |  25 +
 arch/nios2/mm/fault.c                             | 251 +++++++++
 arch/nios2/mm/init.c                              | 142 ++++++
 arch/nios2/mm/ioremap.c                           | 187 +++++++
 arch/nios2/mm/mmu_context.c                       | 116 +++++
 arch/nios2/mm/pgtable.c                           |  74 +++
 arch/nios2/mm/tlb.c                               | 275 ++++++++++
 arch/nios2/mm/uaccess.c                           | 163 ++++++
 arch/nios2/platform/Kconfig.platform              | 129 +++++
 arch/nios2/platform/Makefile                      |   1 +
 arch/nios2/platform/platform.c                    |  46 ++
 include/asm-generic/futex.h                       | 114 +++++
 include/uapi/linux/elf-em.h                       |   1 +
 100 files changed, 10208 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/nios2/nios2.txt
 create mode 100644 Documentation/devicetree/bindings/nios2/timer.txt
 create mode 100644 Documentation/nios2/README
 create mode 100644 arch/nios2/Kconfig
 create mode 100644 arch/nios2/Kconfig.debug
 create mode 100644 arch/nios2/Makefile
 create mode 100644 arch/nios2/boot/Makefile
 create mode 100644 arch/nios2/boot/dts/3c120_devboard.dts
 create mode 100644 arch/nios2/boot/install.sh
 create mode 100644 arch/nios2/boot/linked_dtb.S
 create mode 100644 arch/nios2/configs/3c120_defconfig
 create mode 100644 arch/nios2/include/asm/Kbuild
 create mode 100644 arch/nios2/include/asm/asm-macros.h
 create mode 100644 arch/nios2/include/asm/asm-offsets.h
 create mode 100644 arch/nios2/include/asm/cache.h
 create mode 100644 arch/nios2/include/asm/cacheflush.h
 create mode 100644 arch/nios2/include/asm/checksum.h
 create mode 100644 arch/nios2/include/asm/cmpxchg.h
 create mode 100644 arch/nios2/include/asm/cpuinfo.h
 create mode 100644 arch/nios2/include/asm/delay.h
 create mode 100644 arch/nios2/include/asm/dma-mapping.h
 create mode 100644 arch/nios2/include/asm/elf.h
 create mode 100644 arch/nios2/include/asm/entry.h
 create mode 100644 arch/nios2/include/asm/io.h
 create mode 100644 arch/nios2/include/asm/irq.h
 create mode 100644 arch/nios2/include/asm/irqflags.h
 create mode 100644 arch/nios2/include/asm/linkage.h
 create mode 100644 arch/nios2/include/asm/mmu.h
 create mode 100644 arch/nios2/include/asm/mmu_context.h
 create mode 100644 arch/nios2/include/asm/mutex.h
 create mode 100644 arch/nios2/include/asm/page.h
 create mode 100644 arch/nios2/include/asm/pgalloc.h
 create mode 100644 arch/nios2/include/asm/pgtable-bits.h
 create mode 100644 arch/nios2/include/asm/pgtable.h
 create mode 100644 arch/nios2/include/asm/processor.h
 create mode 100644 arch/nios2/include/asm/ptrace.h
 create mode 100644 arch/nios2/include/asm/registers.h
 create mode 100644 arch/nios2/include/asm/setup.h
 create mode 100644 arch/nios2/include/asm/signal.h
 create mode 100644 arch/nios2/include/asm/string.h
 create mode 100644 arch/nios2/include/asm/switch_to.h
 create mode 100644 arch/nios2/include/asm/syscall.h
 create mode 100644 arch/nios2/include/asm/syscalls.h
 create mode 100644 arch/nios2/include/asm/thread_info.h
 create mode 100644 arch/nios2/include/asm/timex.h
 create mode 100644 arch/nios2/include/asm/tlb.h
 create mode 100644 arch/nios2/include/asm/tlbflush.h
 create mode 100644 arch/nios2/include/asm/traps.h
 create mode 100644 arch/nios2/include/asm/uaccess.h
 create mode 100644 arch/nios2/include/asm/ucontext.h
 create mode 100644 arch/nios2/include/uapi/asm/Kbuild
 create mode 100644 arch/nios2/include/uapi/asm/byteorder.h
 create mode 100644 arch/nios2/include/uapi/asm/elf.h
 create mode 100644 arch/nios2/include/uapi/asm/ptrace.h
 create mode 100644 arch/nios2/include/uapi/asm/sigcontext.h
 create mode 100644 arch/nios2/include/uapi/asm/signal.h
 create mode 100644 arch/nios2/include/uapi/asm/swab.h
 create mode 100644 arch/nios2/include/uapi/asm/unistd.h
 create mode 100644 arch/nios2/kernel/Makefile
 create mode 100644 arch/nios2/kernel/asm-offsets.c
 create mode 100644 arch/nios2/kernel/cpuinfo.c
 create mode 100644 arch/nios2/kernel/entry.S
 create mode 100644 arch/nios2/kernel/head.S
 create mode 100644 arch/nios2/kernel/insnemu.S
 create mode 100644 arch/nios2/kernel/irq.c
 create mode 100644 arch/nios2/kernel/misaligned.c
 create mode 100644 arch/nios2/kernel/module.c
 create mode 100644 arch/nios2/kernel/nios2_ksyms.c
 create mode 100644 arch/nios2/kernel/process.c
 create mode 100644 arch/nios2/kernel/prom.c
 create mode 100644 arch/nios2/kernel/ptrace.c
 create mode 100644 arch/nios2/kernel/setup.c
 create mode 100644 arch/nios2/kernel/signal.c
 create mode 100644 arch/nios2/kernel/sys_nios2.c
 create mode 100644 arch/nios2/kernel/syscall_table.c
 create mode 100644 arch/nios2/kernel/time.c
 create mode 100644 arch/nios2/kernel/traps.c
 create mode 100644 arch/nios2/kernel/vmlinux.lds.S
 create mode 100644 arch/nios2/lib/Makefile
 create mode 100644 arch/nios2/lib/delay.c
 create mode 100644 arch/nios2/lib/memcpy.c
 create mode 100644 arch/nios2/lib/memmove.c
 create mode 100644 arch/nios2/lib/memset.c
 create mode 100644 arch/nios2/mm/Makefile
 create mode 100644 arch/nios2/mm/cacheflush.c
 create mode 100644 arch/nios2/mm/dma-mapping.c
 create mode 100644 arch/nios2/mm/extable.c
 create mode 100644 arch/nios2/mm/fault.c
 create mode 100644 arch/nios2/mm/init.c
 create mode 100644 arch/nios2/mm/ioremap.c
 create mode 100644 arch/nios2/mm/mmu_context.c
 create mode 100644 arch/nios2/mm/pgtable.c
 create mode 100644 arch/nios2/mm/tlb.c
 create mode 100644 arch/nios2/mm/uaccess.c
 create mode 100644 arch/nios2/platform/Kconfig.platform
 create mode 100644 arch/nios2/platform/Makefile
 create mode 100644 arch/nios2/platform/platform.c

Re: [GIT PULL] arch/nios2 for v3.19

[Arnd Bergmann]

On Tuesday 09 December 2014 16:36:12 Ley Foon Tan wrote:
> Hi Linus
> 
> Here is the Linux port for Nios II processor (from Altera) arch/nios2/
> tree for v3.19. The patchset has been discussed on the kernel
> mailing lists since April and has gone through 6 revisions of review.
> The additional changes since then have been mostly further cleanups and
> fixes when merged with other trees.
> 
> The arch code is in arch/nios2 and one asm-generic change (acked by
> Arnd).
> 
> Please consider pulling. 
> 

For the pull request:

Acked-by: Arnd Bergmann <arnd@arndb.de>

I've reviewed the architecture port in the past and it looks good in
its latest version.

	Arnd

Re: [GIT PULL] arch/nios2 for v3.19

[Linus Torvalds]

On Tue, Dec 9, 2014 at 12:36 AM, Ley Foon Tan <lftan@altera.com> wrote:
>
> Here is the Linux port for Nios II processor (from Altera) arch/nios2/
> tree for v3.19.

Ok, pulled. I'd be happier with a few more signatures on your key, but
I can reach Linus Walleij through Dinh Nguyen, so it passed my rough
check,

                   Linus

Re: [GIT PULL] arch/nios2 for v3.19

[Thomas Gleixner]

On Tue, 9 Dec 2014, Linus Torvalds wrote:

> On Tue, Dec 9, 2014 at 12:36 AM, Ley Foon Tan <lftan@altera.com> wrote:
> >
> > Here is the Linux port for Nios II processor (from Altera) arch/nios2/
> > tree for v3.19.
> 
> Ok, pulled. I'd be happier with a few more signatures on your key, but
> I can reach Linus Walleij through Dinh Nguyen, so it passed my rough
> check,

It's a bit sad that all the reviewed/acked-by information which has
been sent throughout the review process is completely lost.

Nothing important, but ...

Thanks,

	tglx

Re: [GIT PULL] arch/nios2 for v3.19

[Linus Torvalds]

On Tue, Dec 9, 2014 at 2:49 PM, Thomas Gleixner <tglx@linutronix.de> wrote:
>
> It's a bit sad that all the reviewed/acked-by information which has
> been sent throughout the review process is completely lost.

Yes. In general, it would probably be a great idea to just include
pointers to acks etc, and I can add them to the merge commit. Arnd's
ack got through simply because he replied to the pull request in time
before I pulled, but that's usually not really going to work, so just
having the maintainer gather up the acks and present them at pull time
would be a good idea.

                       Linus

Re: [GIT PULL] arch/nios2 for v3.19

[George Spelvin]

Thomas Gleixner wrote:
> It's a bit sad that all the reviewed/acked-by information which has
> been sent throughout the review process is completely lost.

Well, in the case here where the ack comes in after the pull request,
obviously only the merger (Linus) can add it, but for older ones,
it seems like an obvious git feature request to have comments in the
annotated tag automatically copied to the merge commit message draft.

That way, the subsystem maintainer could write a branch summary, like
the [PATCH 0/n] summaries that are popular, and have it automatically
included in the history.

That just seems a more sensible place to put things than the pull
request e-mail.

(Preserving the signed annotated tag object itself is another
intriguing possibility, but not only is it a huge format change
to create a way for a commit to point to a tag, but I also don't
see how to avoid tag name collision problems.)

Re: [GIT PULL] arch/nios2 for v3.19

[Theodore Ts'o]

On Tue, Dec 09, 2014 at 08:06:38PM -0500, George Spelvin wrote:
> 
> (Preserving the signed annotated tag object itself is another
> intriguing possibility, but not only is it a huge format change
> to create a way for a commit to point to a tag, but I also don't
> see how to avoid tag name collision problems.)

Actually, git already preserves the signed annotated tag.  That's the
only way git show --show-signature can verify the tag's gpg signature.

You can see original signed annotated tag via a command like this:

git cat-file -p 18b34d9a7a085ba8f9cafa6a0d002e2cbac87c1f

						- Ted

Re: [GIT PULL] arch/nios2 for v3.19

[George Spelvin]

> Actually, git already preserves the signed annotated tag.  That's the
> only way git show --show-signature can verify the tag's gpg signature.
> 
> You can see original signed annotated tag via a command like this:
> 
> git cat-file -p 18b34d9a7a085ba8f9cafa6a0d002e2cbac87c1f

TIL, thank you!

For the others watching in, as you know all commits have "headers"
which are normally not printed.  The above commit looks like

>  tree 939755a58a68aae5e1241b2a905ea612aeb2e589
>  parent 502fde1a0a2990ec54eab5241d3135c545da7372
>  parent bf40c92635d63fcc574c52649f7cda13e0418ac1
>  author Linus Torvalds <torvalds@linux-foundation.org> 1405282495 -0700
>  committer Linus Torvalds <torvalds@linux-foundation.org> 1405282495 -0700
>  mergetag object bf40c92635d63fcc574c52649f7cda13e0418ac1
>   type commit
>   tag ext4_for_linus_stable
>   tagger Theodore Ts'o <tytso@mit.edu> 1405281748 -0400
>   
>   More bug fixes for ext4 -- most importantly, a fix for a bug
>   (introduced in 3.15) that can end up triggering a file system
>   corruption error after a journal replay.  (It shouldn't lead to any
>   actual data corruption, but it is scary and can force file systems to
>   be remounted read-only, etc.)
>   -----BEGIN PGP SIGNATURE-----

The "mergetag" header contains the original annotated tag, indented
by one space.

In this case, Ted included the same message (formatted slightly
differently) in the pull e-mail and Linus copied it into the
merge commit, so it worked out in the end.