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| author | Andreas Sandberg <andreas.sandberg@arm.com> | 2016-02-16 13:21:04 -0600 |
|---|---|---|
| committer | Andreas Sandberg <andreas.sandberg@arm.com> | 2017-05-09 10:09:58 +0000 |
| commit | f65c190d0b0185ca2965d09149f33cb78555a1bf (patch) | |
| tree | b9d39c5fa71ee5002e257511c9a5731eaea7ab11 /src/arch/arm/ArmSystem.py | |
| parent | 699773a867d1095790cce38744d9b2c38a1f551e (diff) | |
| download | gem5-f65c190d0b0185ca2965d09149f33cb78555a1bf.tar.xz | |
arm: Add support for memory-mapped m5ops
Add support for a memory mapped m5op interface. When enabled, the TLB
intercepts accesses in the 64KiB region designated by the
ArmTLB.m5ops_base parameter. An access to this range maps to a
specific m5op call. The upper 8 bits of the offset into the range
denote the m5op function to call and the lower 8 bits denote the
subfunction.
Change-Id: I55fd8ac1afef4c3cc423b973870c9fe600a843a2
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/2964
Diffstat (limited to 'src/arch/arm/ArmSystem.py')
| -rw-r--r-- | src/arch/arm/ArmSystem.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/arch/arm/ArmSystem.py b/src/arch/arm/ArmSystem.py index 41f6b9d79..c21b9c6ec 100644 --- a/src/arch/arm/ArmSystem.py +++ b/src/arch/arm/ArmSystem.py @@ -76,6 +76,10 @@ class ArmSystem(System): have_large_asid_64 = Param.Bool(False, "True if ASID is 16 bits in AArch64 (ARMv8)") + m5ops_base = Param.Addr(0, + "Base of the 64KiB PA range used for memory-mapped m5ops. Set to 0 " + "to disable.") + class GenericArmSystem(ArmSystem): type = 'GenericArmSystem' cxx_header = "arch/arm/system.hh" |