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The CNTVOFF characteristics are:
Holds the 64-bit virtual offset for a CNTBaseN frame that has virtual timer capability. This is the offset between real time and virtual time.
The power domain of CNTVOFF is IMPLEMENTATION DEFINED.
For more information, see 'Power and reset domains for the system level implementation of the Generic Timer'.
CNTVOFF is a 64-bit register.
The CNTVOFF bit assignments are:
63 | 62 | 61 | 60 | 59 | 58 | 57 | 56 | 55 | 54 | 53 | 52 | 51 | 50 | 49 | 48 | 47 | 46 | 45 | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 32 |
Virtual offset | |||||||||||||||||||||||||||||||
Virtual offset | |||||||||||||||||||||||||||||||
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Virtual offset.
On a Warm reset, thisThis field resets to an architecturally UNKNOWN value.
CNTVOFF is implemented, as a RO register, in any implemented CNTBaseN frame that has virtual timer capability.
'CNTCTLBase status and control fields for the CNTBaseN and CNTEL0BaseN frames' describes the status fields that identify whether a CNTBaseN frame is implemented, and for an implemented frame:
For an implemented CNTBaseN frame that has virtual timer capability:
CNTVOFF is never visible in any CNTEL0BaseN frame. This means that the CNTVOFF address in any implemented CNTEL0BaseN frame is RAZ/WI.
In an implementation that supports 64-bit atomic accesses, a CNTVOFF{<n>} register must be accessible as an atomic 64-bit value.
Component | Frame | Offset | Range |
---|---|---|---|
Timer | CNTBaseN | 0x018 | 31:0 |
Accesses on this interface are RO.
Component | Frame | Offset | Range |
---|---|---|---|
Timer | CNTBaseN | 0x01C | 63:32 |
Accesses on this interface are RO.
3001/0907/2020 15:0757; ccead0cb9f089f9ceec50268e82aec9e7104721180324f0b9997bede489cc15ad1565345720bcd2a
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