Intel® Core™ Ultra Processors for H-series and U-series Platforms CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 795258 | 12/14/2023 | Public |
A newer version of this document is available. Customers should click here to go to the newest version.
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 (BASEADDR) Low Base address of the AXI 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 (PREFETCHABLE) Indicates that this BAR is not prefetchable. |
| 2:1 | 0h | RO | Type (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 (MESSAGE_SPACE) 0 indicates this BAR is present in the memory space. |