Commit graph

6 commits

Author SHA1 Message Date
Mike Frysinger
909878fd3f Blackfin: add os log functions
Part of the mini Blackfin ABI with operating systems is that they can use
0x4f0-0x4f8 to pass log buffers to/from bootloaders.  So add support to
U-Boot for reading the log buffer.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-18 21:15:50 -04:00
Mike Frysinger
b93c686484 Blackfin: only flag L1 instruction for DMA memcpy
The performance difference from doing an 8 bit DMA memcpy vs an optimized
core memcpy can be pretty big when you add in the overhead of setting up the
MDMA registers, cache flushes, etc...  So only use dma_memcpy() when we
actually require it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-02-02 12:24:46 -05:00
Mike Frysinger
fdce83c108 Blackfin: rewrite cache handling functions
Take the cache flush functions from the kernel as they use hardware loops in
order to get optimal performance.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-02-02 12:24:44 -05:00
Mike Frysinger
40599239e7 Blackfin: cache core/system clock values
Calculating the clocks requires a bit of calls to gcc math functions, so
cache the values after the first run since they'll most likely never
change once U-Boot is up and running.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-02-02 12:24:42 -05:00
Mike Frysinger
05b75e4883 Blackfin: fix dcache handling when doing dma memcpy's
Our dcache invalidate function doesn't just invalidate, it also flushes.
So rename the function accordingly and fix the dma_memcpy() function so it
doesn't inadvertently corrupt the data destination.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-01-28 13:26:12 -05:00
Mike Frysinger
d4d7730853 punt Blackfin VDSP headers and import sanitized/auto-generated ones
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2008-02-04 19:26:55 -05:00