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| author | Andreas Sandberg <andreas.sandberg@arm.com> | 2015-05-23 13:46:53 +0100 |
|---|---|---|
| committer | Andreas Sandberg <andreas.sandberg@arm.com> | 2015-05-23 13:46:53 +0100 |
| commit | 2278fec1d1064ec1622098153b20a773fb688e78 (patch) | |
| tree | fcb7441fb487261ba3e9465fa30ad856e286f7ca /src/arch/arm | |
| parent | 65f3f097d3c270d2f28fc7d55651afaefb56ceed (diff) | |
| download | gem5-2278fec1d1064ec1622098153b20a773fb688e78.tar.xz | |
dev, arm: Add virtual timers to the generic timer model
The generic timer model currently does not support virtual
counters. Virtual and physical counters both tick with the same
frequency. However, virtual timers allow a hypervisor to set an offset
that is subtracted from the counter when it is read. This enables the
hypervisor to present a time base that ticks with virtual time in the
VM (i.e., doesn't tick when the VM isn't running). Modern Linux
kernels generally assume that virtual counters exist and try to use
them by default.
Diffstat (limited to 'src/arch/arm')
| -rw-r--r-- | src/arch/arm/miscregs.cc | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/arch/arm/miscregs.cc b/src/arch/arm/miscregs.cc index 07d938f6a..729cb4e8b 100644 --- a/src/arch/arm/miscregs.cc +++ b/src/arch/arm/miscregs.cc @@ -715,9 +715,9 @@ bitset<NUM_MISCREG_INFOS> miscRegInfo[NUM_MISCREGS] = { // MISCREG_CNTP_CTL_S bitset<NUM_MISCREG_INFOS>(string("00110011001111100000")), // MISCREG_CNTV_TVAL - bitset<NUM_MISCREG_INFOS>(string("01111000000000000000")), + bitset<NUM_MISCREG_INFOS>(string("11111111111111000001")), // MISCREG_CNTV_CTL - bitset<NUM_MISCREG_INFOS>(string("01111000000000000000")), + bitset<NUM_MISCREG_INFOS>(string("11111111111111000001")), // MISCREG_CNTHCTL bitset<NUM_MISCREG_INFOS>(string("01001000000000000000")), // MISCREG_CNTHP_TVAL @@ -763,7 +763,7 @@ bitset<NUM_MISCREG_INFOS> miscRegInfo[NUM_MISCREGS] = { // MISCREG_CNTP_CVAL_S bitset<NUM_MISCREG_INFOS>(string("00110011001111100000")), // MISCREG_CNTV_CVAL - bitset<NUM_MISCREG_INFOS>(string("01111000000000000000")), + bitset<NUM_MISCREG_INFOS>(string("11111111111111000001")), // MISCREG_CNTVOFF bitset<NUM_MISCREG_INFOS>(string("11001100000000000001")), // MISCREG_CNTHP_CVAL @@ -1259,11 +1259,11 @@ bitset<NUM_MISCREG_INFOS> miscRegInfo[NUM_MISCREGS] = { // MISCREG_CNTP_CVAL_EL0 bitset<NUM_MISCREG_INFOS>(string("11111111111111000001")), // MISCREG_CNTV_TVAL_EL0 - bitset<NUM_MISCREG_INFOS>(string("01111000000000000000")), + bitset<NUM_MISCREG_INFOS>(string("11111111111111000001")), // MISCREG_CNTV_CTL_EL0 - bitset<NUM_MISCREG_INFOS>(string("01111000000000000000")), + bitset<NUM_MISCREG_INFOS>(string("11111111111111000001")), // MISCREG_CNTV_CVAL_EL0 - bitset<NUM_MISCREG_INFOS>(string("01111000000000000000")), + bitset<NUM_MISCREG_INFOS>(string("11111111111111000001")), // MISCREG_PMEVCNTR0_EL0 bitset<NUM_MISCREG_INFOS>(string("11111111111111000001")), // MISCREG_PMEVCNTR1_EL0 |