B2.5 VGIC Type Register

The GICH_VTR characteristics are:

Purpose
Holds information on number of priority bits, number of preemption bits, and number of List Registers implemented.
Usage constraints
There are no usage constraints.
Configurations
Available in all configurations.
Attributes
See the register summary in B2.4 Virtual interface control register summary.
Figure B2-2 GICH_VTR bit assignments
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PRIbits, [31:29]

Indicates the number of priority bits implemented, minus one:

0x4Five bits of priority and 32 priority levels.
PREbits, [28:26]

Indicates the number of preemption bits implemented, minus one:

0x4Five bits of preemption and 32 preemption levels.
[25:6]
Reserved, res0.
ListRegs, [5:0]

Indicates the number of implemented List Registers, minus one:

0x3Four List Registers.
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