linux.git/arch/powerpc/kernel/btext.c, branch v4.11

powerpc/mm: Use a helper for finding pte bits mapping I/O area

2016-05-01T08:32:32+00:00

Use a helper instead of open coding with constants. A later patch will
drop the WIMG bits and use PowerISA 3.0 defines.

Signed-off-by: Aneesh Kumar K.V 
Signed-off-by: Michael Ellerman

powerpc/btext: Fix CONFIG_PPC_EARLY_DEBUG_BOOTX on ppc32

2013-08-27T06:01:23+00:00

The "rmci" stuff only exists on 64-bit

Signed-off-by: Benjamin Herrenschmidt

powerpc/pmac: Early debug output on screen on 64-bit macs

2013-08-14T04:57:40+00:00

We have a bunch of CONFIG_PPC_EARLY_DEBUG_* options that are intended
for bringup/debug only. They hard wire a machine specific udbg backend
very early on (before we even probe the platform), and use whatever
tricks are available on each machine/cpu to be able to get some kind
of output out there early on.

So far, on powermac with no serial ports, we have CONFIG_PPC_EARLY_DEBUG_BOOTX
to use the low-level btext engine on the screen, but it doesn't do much, at
least on 64-bit. It only really gets enabled after the platform has been
probed and the MMU enabled.

This adds a way to enable it much earlier. From prom_init.c (while still
running with Open Firmware), we grab the screen details and set things up
using the physical address of the frame buffer.

Then btext itself uses the "rm_ci" feature of the 970 processor (Real
Mode Cache Inhibited) to access it while in real mode.

We need to do a little bit of reorg of the btext code to inline things
better, in order to limit how much we touch memory while in this mode as
the consequences might be ... interesting.

This successfully allowed me to debug problems early on with the G5
(related to gold being broken vs. ppc64 kernels).

Signed-off-by: Benjamin Herrenschmidt

powerpc: various straight conversions from module.h --> export.h

2011-10-31T23:30:44+00:00

All these files were including module.h just for the basic
EXPORT_SYMBOL infrastructure.  We can shift them off to the
export.h header which is a way smaller footprint and thus
realize some compile time gains.

Signed-off-by: Paul Gortmaker

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

lmb: rename to memblock

2010-07-14T07:14:00+00:00

via following scripts

      FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')

      sed -i \
        -e 's/lmb/memblock/g' \
        -e 's/LMB/MEMBLOCK/g' \
        $FILES

      for N in $(find . -name lmb.[ch]); do
        M=$(echo $N | sed 's/lmb/memblock/g')
        mv $N $M
      done

and remove some wrong change like lmbench and dlmb etc.

also move memblock.c from lib/ to mm/

Suggested-by: Ingo Molnar 
Acked-by: "H. Peter Anvin" 
Acked-by: Benjamin Herrenschmidt 
Acked-by: Linus Torvalds 
Signed-off-by: Yinghai Lu 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Use the common ascii hex helpers

2008-08-20T06:34:57+00:00

[akpm@linux-foundation.org: exclude prom_init.c]
Signed-off-by: Harvey Harrison 
Signed-off-by: Andrew Morton 
Signed-off-by: Paul Mackerras

[POWERPC] Remove duplicate #include

2008-05-09T10:22:58+00:00

Remove duplicate #include of  in
arch/powerpc/kernel/btext.c.

Signed-off-by: Huang Weiyi 
Signed-off-by: Paul Mackerras

[LIB]: Make PowerPC LMB code generic so sparc64 can use it too.

2008-02-14T00:56:49+00:00

Signed-off-by: David S. Miller

[POWERPC] Use for_each macros in arch/powerpc/kernel

2008-01-17T03:56:55+00:00

Signed-off-by: Cyrill Gorcunov 
Signed-off-by: Paul Mackerras