Intel® Core™ Ultra 200V Series Processors SOC I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 831520 | 09/03/2024 | 001 | Public |
BIOS Flash Primary Region (BIOS_BFPREG) – Offset 0
BIOS Flash Primary Region
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31 | 0h | RO/V | Shadowed BIOS Region Select (SBRS) This bit reflects the CSXEFCTRL.BRS bit under the CSME SPI CSME root space configuration register. |
| 30:16 | 0h | RO/V | BIOS Flash Primary Region Limit (PRL) This specifies address bits 26:12 for the Primary Region Limit. The value in this register is loaded from the contents in the Flash Descriptor.FLREG1.Region Limit, or the Flash Descriptor.FLREG6.Region Limit depending on the BFPREG.SBRS bit. |
| 15 | 0h | RO | Reserved (RSVD)
|
| 14:0 | 0h | RO/V | BIOS Flash Primary Region Base (PRB) This specifies address bits 26:12 for the Primary Region Base. The value in this register is loaded from the contents in the Flash Descriptor.FLREG1.Region Base, or the Flash Descriptor.FLREG6.Region Base depending on the BFPREG.SBRS bit. |