linux-toradex.git/arch/microblaze/kernel, branch imx-android-r12

microblaze: Fix msr instruction detection

2011-02-07T18:13:01+00:00

Fix msr instructions detection. The current code
just use msrclr for loading msr content and compare
it with proper MSR content. If msrclr is not implemented
r8 contains pc address.
Previous code wanted to use MSR carry bit but if msrclr
wasn't implemented carry wasn't cleared.

Signed-off-by: Michal Simek

microblaze: Fix asm compilation warning

2011-02-07T18:12:17+00:00

Microblaze ASM doesn't support hex values for mfs instructions.

/tmp/ccwiXVmt.s: Assembler messages:
/tmp/ccwiXVmt.s:19: Warning: ignoring operands: x00

Signed-off-by: Michal Simek

microblaze: Fix unaligned issue on MMU system with BS=0 DIV=1

2011-01-28T13:05:00+00:00

Unaligned code use shift for finding register operand.
There is used BSRLI(r8,r8,2) macro which is expand for BS=0, DIV=1
by
	ori rD, r0, (1 << imm);	\
	idivu rD, rD, rA

but if rD is equal rA then ori instruction rewrite value which
should be devide.

The patch remove this macro which use idivu instruction because
idivu takes 32/34 cycles. The highest shifting is 20 which takes
20 cycles.

Signed-off-by: Michal Simek

microblaze: Fix DTB passing from bootloader

2011-01-28T13:04:36+00:00

Little endian system needs to check OF_DT_HEADER
but it is swapped because it is in big-endian.
Microblaze LE provides lwr instruction which loads
magic number in BIG endian format which can be compared.

There is used the fact that if you write 0x1 as word
and load it as byte then you get for big-endian zero
and 1 for little-endian.

Signed-off-by: Michal Simek

dt/flattree: Return virtual address from early_init_dt_alloc_memory_arch()

2011-01-16T05:01:58+00:00

The physical address is never used by the device tree code when
allocating memory for unflattening.  Change the architecture's alloc
hook to return the virutal address instead.

Signed-off-by: Grant Likely

Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze

2011-01-11T19:13:46+00:00

* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: remove obsolete DEBUG_BOOTMEM
  microblaze: trivial: Fix removed the part of line
  microblaze: Fix __muldi3 function for little-endian.
  microblaze: Clear i/dcache for sw breakpoints
  microblaze: Remove useless early_init_dt_check_for_initrd
  microblaze: Fix unaligned exception for little endian platform
  microblaze: Add PVR for Microblaze v8.00.b
  microblaze: Correct PVR access macros
  Revert "microblaze: Simplify syscall rutine"
  microblaze: Fix initramfs
  arch/microblaze: Remove unnecessary semicolons

microblaze: Clear i/dcache for sw breakpoints

2011-01-03T09:16:56+00:00

There is necessary to flush dcache and invalidate
icache for address where breakpoint (brki r16, 0x18)
was. The reason is that for some cases icache line
still keeps brki instruction and it is not updated
by origin instruction maintains by gdbserver.

Signed-off-by: Michal Simek

microblaze: Remove useless early_init_dt_check_for_initrd

2011-01-03T09:12:43+00:00

Remove copy&paste error. Microblaze doesn't support initrd.

Signed-off-by: Walter Goossens 
Signed-off-by: Michal Simek

microblaze: Fix unaligned exception for little endian platform

2011-01-03T09:08:29+00:00

Half word unaligned accesses need to be fixed.

Signed-off-by: Michal Simek

microblaze: Add PVR for Microblaze v8.00.b

2011-01-03T09:08:16+00:00

Microblaze v8.00.b have 0x13 version string.

Signed-off-by: Michal Simek