Intel® Core™ Ultra Processors for H-series and U-series Platforms SOC I/O Registers
Base Address Register (BAR) – Offset 10
Base Address Register low [31:2] type[2:1] in 32bit or 64bit addr range and memory space indicator [0]
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
31:12 | 0h | RW | Base Address Field (BASEADDR) Base Address Register Low Base address of the OCP fabric memory space. Taken from Strap values as ones |
11:4 | 0h | RO | Size Field (SIZEINDICATOR) Size Indicator RO Always returns 0 The size of this register depends on the size of the memory space |
3 | 0h | RO | Prefetchable Field (PREFETCHABLE) Prefetchable: Indicates that this BAR is not prefetchable |
2:1 | 0h | RO | Type Field (TYPE0) If BAR_64b_EN is 0 then 00 indicates BAR lies in 32bit address range If BAR_64b_EN is 1 then 10 Indicates BAR lies in 64 bit address range |
0 | 0h | RO | Message Space Field (MESSAGE_SPACE) Memory Space Indicator: 0 indicates this BAR is present in the memory space. |