4.5.5 Configuration ID1 Register, GICR_CFGID1

This register returns information about the configuration of the Redistributors.

The GICR_CFGID1 characteristics are:

Usage constraintsThere are no usage constraints.
ConfigurationsAvailable in all GIC-600 configurations.
AttributesSee 4.5 Redistributor registers for SGIs and PPIs summary.

The following figure shows the bit assignments.

Figure 4-26 GICR_CFGID1 bit assignments
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The following table shows the bit assignments.

Table 4-34 GICR_CFGID1 bit assignments

Bits Name Function
[31:28] Version

Identifies the major and minor revisions, and product quality status of the GIC-600:

0x1 = r0p0.

0x3 = r0p1.

0x4 = r0p2.

0x5 = r1p1.

0x6 = r0p3.

0x7 = r1p2.

0x8 = r1p3.

0x9 = r1p4.

[27:24] UserValue Modification value that you can set.
[23:20] - Reserved, RAZ.
[19:16] PPIs_per_Processor The number of Redistributors that each core supports − 1.
[15:13] - Reserved.
[12] DirectUpstream Indicates a direct upstream connection.
[11:4] NumCPUs The number of cores that are integrated in this Redistributor.
[3:0] - Reserved, RAZ.
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