diff options
author | Paul Mundt <lethal@linux-sh.org> | 2006-11-20 14:30:26 +0900 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2006-12-06 10:45:37 +0900 |
commit | 21440cf04a64cd1b1209c12a6e1a3afba2a28709 (patch) | |
tree | 9af7a89c4c711b8433b3b1e23e2ba0c95f82fbf7 /arch/sh/Makefile | |
parent | b552c7e8bceae8a04ae79ecee6fa369c1ba4f8e4 (diff) |
sh: Preliminary support for SH-X2 MMU.
This adds some preliminary support for the SH-X2 MMU, used by
newer SH-4A parts (particularly SH7785).
This MMU implements a 'compat' mode with SH-X MMUs and an
'extended' mode for SH-X2 extended features. Extended features
include additional page sizes (8kB, 4MB, 64MB), as well as the
addition of page execute permissions.
The extended mode attributes are placed in a second data array,
which requires us to switch to 64-bit PTEs when in X2 mode.
With the addition of the exec perms, we also overhaul the mmap
prots somewhat, now that it's possible to handle them more
intelligently.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/Makefile')
0 files changed, 0 insertions, 0 deletions