CpuIo2Dxe

Overview

Standard EDK2 UEFI CPU I/O 2 Protocol DXE Driver. Implements and produces the
EFI_CPU_IO2_PROTOCOL for validated access to memory-mapped I/O (MMIO) and port
I/O spaces. Each access is parameter-validated for width, alignment, address
range, and buffer alignment before dispatch. Source from
UefiCpuPkg\CpuIo2Dxe\CpuIo2Dxe.c (Intel EDK2).

Key Functions

• CpuIoInitialize — installs the EFI_CPU_IO2_PROTOCOL on a new handle
• CpuIoCheckParameter — validates width, offset, count, and buffer alignment
• CpuIoMemRead / CpuIoMemWrite — MMIO read/write with validation
• CpuIoRead / CpuIoWrite — port I/O read/write with validation

Protocols / Dependencies

• EFI_CPU_IO2_PROTOCOL

Platform

HR650X Purley (generic DXE driver)