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target-arm: Honour NS bits in page tables

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Honour the NS bit in ARM page tables:
 * when adding entries to the TLB, include the Secure/NonSecure
   transaction attribute
 * set the NS bit in the PAR when doing ATS operations

Note that we don't yet correctly use the NSTable bit to
cause the page table walk itself to use the right attributes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Peter Maydell 2015-04-26 16:49:25 +01:00
parent 42874d3a8c
commit 8bf5b6a9c1
2 changed files with 69 additions and 12 deletions
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2
include/exec/memattrs.h
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@ -29,6 +29,8 @@ typedef struct MemTxAttrs {
* "didn't specify" if necessary.
*/
unsigned int unspecified:1;
/* ARM/AMBA TrustZone Secure access */
unsigned int secure:1;
} MemTxAttrs;
/* Bus masters which don't specify any attributes will get this,