The same noMMU and MMU functions should be placed in
one file.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Just sort to be able remove whole block.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

I would like to use asm-generic uaccess.h where are segment
macros defined. This is just first step.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

We don't need to do it.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

If CONFIG_INITRAMFS_SOURCE is set, "scripts/gen_initramfs_list.sh"
checks if the cpio image exists. Remove the duplicate check from the
Makefile.

Remove the "clean-kernel" variable which is unused in the Makefile and
is not used by the Kbuild.
Signed-off-by: NArun Bhanu <arun@bhanu.net>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

'make clean' does not to delete the following build generated file:
	arch/microblaze/boot/linux.bin.ub

'make mrproper' does not to delete the following build generated files:
	arch/microblaze/boot/simpleImage.*

Fix the Makefile to delete these build generated files.

See [1] for a discussion on why simpleImage.* files are deleted with 'make
mrproper' and not with 'make clean'.
	[1] http://lkml.org/lkml/2010/3/12/96Signed-off-by: NArun Bhanu <arun@bhanu.net>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

'make ARCH=microblaze help' fails with the following error due to a
missing single quote.

/bin/sh: -c: line 0: unexpected EOF while looking for matching `''
/bin/sh: -c: line 1: syntax error: unexpected end of file
make: *** [help] Error 2
Signed-off-by: NArun Bhanu <arun@bhanu.net>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

The "kstack=" command line parameter is not parsed correctly.
All proper values are interpreted as zero.
Signed-off-by: NSteven J. Magnani <steve@digidescorp.com>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT and
PTRACE_KILL.  This also makes PTRACE_SINGLESTEP return -EIO while it
previously succeeded despite not actually causing any kind of single
stepping.

Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which
it previously wasn't which is consistent with all architectures using the
modern ptrace code.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Acked-by: NMichal Simek <monstr@monstr.eu>
Cc: John Williams <john.williams@petalogix.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Use ptrace_request() in the three remaining architectures that didn't use it
(m68knommu, h8300, microblaze).  This means:

 - ptrace_request now handles PTRACE_{PEEK,POKE}{TEXT,DATA} and PTRACE_DETATCH
   calls that were previously called directly, or in case of h8300 even open
   coded.
 - adds new support for PTRACE_SETOPTIONS/PTRACE_GETEVENTMSG/
   PTRACE_GETSIGINFO/PTRACE_SETSIGINFO
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Michal Simek <monstr@monstr.eu>
Acked-by: NGreg Ungerer <gerg@uclinux.org>
Acked-by: NRoland McGrath <roland@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NMichal Simek <monstr@monstr.eu>

Signed-off-by: NMichal Simek <monstr@monstr.eu>

There is possible to save r3/r4 at the beggining of user part
before calling handlers and at the end restore it.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Signed-off-by: NMichal Simek <monstr@monstr.eu>

We have to use consistent code to be able to do coherent dma
function. In consistent code is used cache inhibit page mapping.
Xilinx reported that there is bug in Microblaze for WB and
d-cache_always use option. Microblaze 7.30.a should be first version
where is this bug removed.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Remove ancient Kconfig option for consistent code.
MMU uses cache inhibit pages.

noMMU uses UNCACHE SHADOW feature where is used double ram size.
For example:
Physical ram is 256MB and cache are setup to cover the same size.
But if you setup in HW that size is 512MB and cache covers 256MB
than you can use adresses from 256-512MB without caches and
correspond with 0-256MB with cache. That's why I am using
dcache base/high addresses to find out uncache area.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Consistent functions will be used for noMMU and MMU kernels.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

We don't use CONSISTENT option from Kconfig that's why I am removing them.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Signed-off-by: NMichal Simek <monstr@monstr.eu>

It is default option but both options must be measured.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

I found several problems for ll_temac driver and on system with WB.
This early fix should fix it. I will clean this patch before I will add
it to mainline
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Signed-off-by: NFrans Pop <elendil@planet.nl>
Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Remove arch-specific show_mem() in favor of the generic version.
It is based on powerpc patch.
bda2fa53Signed-off-by: NMichal Simek <monstr@monstr.eu>

For copy was used r7 register when CONFIG_CMDLINE_BOOL option
is enabled. But r7 stores pointer to fdt that's why machine_early_init
not detect compiled-in DTB.

I also moved kernel PID setup to have TLB init in one block
Signed-off-by: NMichal Simek <monstr@monstr.eu>

I found several problems for ll_temac driver and on system with WB.
This early fix should fix it. I will clean this patch before I will add
it to mainline
Signed-off-by: NMichal Simek <monstr@monstr.eu>

It is better to have init cache handling on one place.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

This patch add core PREEMPT support for Microblaze.
I tried to trace it via tracers and I was able to see any output.

I also added low level debug functions to see if that code is called.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

This patch is based on powerpc patch
64f16502

We did some cleanups and removed powerpc parts.
There is one new debug early listing function too.

Exclude function is only in Debug options.

We tested in on custom board.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

There are two parts of changes. The first is just enable
PCI in Makefiles and in Kconfig. The second is the rest of
missing files. I didn't want to add it with previous patch
because that patch is too big.

Current Microblaze toolchain has problem with weak symbols
that's why is necessary to apply this changes to be possible
to compile pci support.
Xilinx knows about this problem.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Add pci-common.h and pci32.c. Files are based on PPC version.
There are removed ppc specific parts and the code was completely
clean.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Add pci-bridge.h for Microblaze. It is based on powerpc header file.
My changes:
I removed PPC_ prefix from constants
Removed ppc64 specifis parts
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Add pci.h for microblaze. It is based on powerpc pci.h
Signed-off-by: NMichal Simek <monstr@monstr.eu>

I need to use generic/iomap.h for PCI that's why is necessary
to include it and fix ioport_{map,unmap} functions.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Support function for PCI. We don't use any advance mapping mechanism
that's why implementation is simple.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

I will need {z,}alloc_maybe_bootmem functions for pci patches
Signed-off-by: NMichal Simek <monstr@monstr.eu>

There is necessary to do some cache handling for dma operations.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Add DMA support for Microblaze. There are some part of this new feature:
1. Basic DMA support
2. Enable DMA debug option
3. Setup notifier

Ad 1. dma-mapping come from powerpc and x86 version and it is based on
generic dma-mapping-common.h

Ad 2. DMA support debug features which is used in generic file.
For more information please look at Documentation/DMA-API.txt

Ad 3. notifier is very important to setup dma_ops. Without this part
for example ll_temac driver failed because there are no setup dma operations.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Trailing semicolon causes compilation involving out_le32() to fail.
Signed-off-by: NSteven J. Magnani <steve@digidescorp.com>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

I create wrong asm code but none test shows that this part of code is wrong.
I am not convinces that were good idea to create asm optimized macros
for caches. The reason is that there is not optimization with previous code
that's why make sense to add old code and do some benchmarking which
functions are faster.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

On VIVT ARM, when we have multiple shared mappings of the same file
in the same MM, we need to ensure that we have coherency across all
copies.  We do this via make_coherent() by making the pages
uncacheable.

This used to work fine, until we allowed highmem with highpte - we
now have a page table which is mapped as required, and is not available
for modification via update_mmu_cache().

Ralf Beache suggested getting rid of the PTE value passed to
update_mmu_cache():

  On MIPS update_mmu_cache() calls __update_tlb() which walks pagetables
  to construct a pointer to the pte again.  Passing a pte_t * is much
  more elegant.  Maybe we might even replace the pte argument with the
  pte_t?

Ben Herrenschmidt would also like the pte pointer for PowerPC:

  Passing the ptep in there is exactly what I want.  I want that
  -instead- of the PTE value, because I have issue on some ppc cases,
  for I$/D$ coherency, where set_pte_at() may decide to mask out the
  _PAGE_EXEC.

So, pass in the mapped page table pointer into update_mmu_cache(), and
remove the PTE value, updating all implementations and call sites to
suit.

Includes a fix from Stephen Rothwell:

  sparc: fix fallout from update_mmu_cache API change
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>