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cache: add ALLOC_CACHE_ALIGN_BUFFER macro

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This macro is used to allocate cache line size aligned stack
buffers for use with DMA hardware.

Signed-off-by: Anton Staaf <robotboy@chromium.org>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Aneesh V <aneesh@ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Wolfgang Denk <wd@denx.de>
This commit is contained in:
Anton staaf
2011-10-12 13:55:59 +00:00
committed by Wolfgang Denk
parent d47031e687
commit 46a6d51c82
2 changed files with 60 additions and 0 deletions
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doc/README.arm-caches
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@@ -40,6 +40,8 @@ Buffer Requirements:
- If the buffer is not cache-line aligned invalidation will be restricted
to the aligned part. That is, one cache-line at the respective boundary
may be left out while doing invalidation.
- A suitable buffer can be alloced on the stack using the
ALLOC_CACHE_ALIGN_BUFFER macro.
Cleanup Before Linux:
- cleanup_before_linux() should flush the D-cache, invalidate I-cache, and