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| author | Giacomo Gabrielli <Giacomo.Gabrielli@arm.com> | 2014-01-24 15:29:30 -0600 |
|---|---|---|
| committer | Giacomo Gabrielli <Giacomo.Gabrielli@arm.com> | 2014-01-24 15:29:30 -0600 |
| commit | aefe9cc624902fe26535028f86ba3a45f555bcf0 (patch) | |
| tree | 4d775f34b34eeafc0c596b95aa071cc52fb94283 /src/mem/request.hh | |
| parent | 7f835a59f1c342eb1c170973ad53c493cc38e978 (diff) | |
| download | gem5-aefe9cc624902fe26535028f86ba3a45f555bcf0.tar.xz | |
mem: Add support for a security bit in the memory system
This patch adds the basic building blocks required to support e.g. ARM
TrustZone by discerning secure and non-secure memory accesses.
Diffstat (limited to 'src/mem/request.hh')
| -rw-r--r-- | src/mem/request.hh | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mem/request.hh b/src/mem/request.hh index fb21e3ff3..ade7a75df 100644 --- a/src/mem/request.hh +++ b/src/mem/request.hh @@ -140,6 +140,9 @@ class Request * valid together with MMAPPED_IPR) */ static const FlagsType GENERIC_IPR = 0x08000000; + /** The request targets the secure memory space. */ + static const FlagsType SECURE = 0x10000000; + /** These flags are *not* cleared when a Request object is reused (assigned a new address). */ static const FlagsType STICKY_FLAGS = INST_FETCH; @@ -612,6 +615,7 @@ class Request bool isCondSwap() const { return _flags.isSet(MEM_SWAP_COND); } bool isMmappedIpr() const { return _flags.isSet(MMAPPED_IPR); } bool isClearLL() const { return _flags.isSet(CLEAR_LL); } + bool isSecure() const { return _flags.isSet(SECURE); } }; #endif // __MEM_REQUEST_HH__ |