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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/system.cc | |
| 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/system.cc')
| -rw-r--r-- | src/arch/arm/system.cc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/arch/arm/system.cc b/src/arch/arm/system.cc index 322f686dc..50d0af909 100644 --- a/src/arch/arm/system.cc +++ b/src/arch/arm/system.cc @@ -65,6 +65,9 @@ ArmSystem::ArmSystem(Params *p) _resetAddr64(p->reset_addr_64), _physAddrRange64(p->phys_addr_range_64), _haveLargeAsid64(p->have_large_asid_64), + _m5opRange(p->m5ops_base ? + RangeSize(p->m5ops_base, 0x10000) : + AddrRange(1, 0)), // Create an empty range if disabled multiProc(p->multi_proc) { // Check if the physical address range is valid |