> On Feb 27, 2015, at 12:27 AM, tiger...@zhaoxin.com wrote:
>
> Hi, experts:
> UEFI BIOS will do pci enumeration, and allocated IO ranges(not MMIO range,
> just pure IO range) for some PCI devices.
> So:
> How to declare these allocated IO ranges as reserved when booting OS.
> So OS won’t occupy these pre-allocated IO ranges when a PnP device is plugged
> during OS runtime.
>
> Is ACPI Table the only method to declare these reserved IO ranges?
>
Yes, the PCI root bridge should know what IO and MMIO ranges it decodes and
return them in it’s CRS method.
Thanks,
Andrew Fish
> Best wishes,
>
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