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authorAndreas Sandberg <andreas.sandberg@arm.com>2015-05-23 13:46:53 +0100
committerAndreas Sandberg <andreas.sandberg@arm.com>2015-05-23 13:46:53 +0100
commit2278fec1d1064ec1622098153b20a773fb688e78 (patch)
treefcb7441fb487261ba3e9465fa30ad856e286f7ca /src/arch
parent65f3f097d3c270d2f28fc7d55651afaefb56ceed (diff)
downloadgem5-2278fec1d1064ec1622098153b20a773fb688e78.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')
-rw-r--r--src/arch/arm/miscregs.cc12
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