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author | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2007-12-13 12:56:33 +0100 |
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committer | Stefan Roese <sr@denx.de> | 2007-12-13 13:15:16 +0100 |
commit | 4d7d6936eb29af7cca330937808312aa5f61454d (patch) | |
tree | b376f7dce492d171cf6740ac4ec36574e94eec1e /cpu | |
parent | cdbaefb5f5f03e54455d0439dcf6dbd97ead1f9d (diff) | |
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Introduce map_physmem() and unmap_physmem()
map_physmem() returns a virtual address which can be used to access a
given physical address without involving the cache. unmap_physmem()
should be called when the virtual address returned by map_physmem() is
no longer needed.
This patch adds a stub implementation which simply returns the
physical address cast to a uchar * for all architectures except AVR32,
which converts the physical address to an uncached virtual mapping.
unmap_physmem() is a no-op on all architectures, but if any
architecture needs to do such mappings through the TLB, this is the
hook where those TLB entries can be invalidated.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'cpu')
0 files changed, 0 insertions, 0 deletions