ポータブルコンピューティングデバイス（ＰＣＤ）上で動作可能なオペレーティングシステムに周辺構成要素インターフェースエクスプレス（ＰＣＩＥ）結合デバイスを見せるための方法およびＰＣＤ

摘要

In a portable computing device having a system-on-chip (SoC) Acorn RISC Machine (ARM)-based resource architecture, a peripheral component interconnect express (PCIe) bus is used to insert PCIe device memory into system memory absent a PCIe driver. During a PCIe initialization, the contents of PCIe base address registers (BARs) are mapped or otherwise updated to coincide with values assigned to the PCIe device in the advanced configuration and power interface (ACPI) tables.