/** @file This code abstracts the CPU IO Protocol which installed by some platform or chipset-specific PEIM that abstracts the processor-visible I/O operations. Note: This is a runtime protocol and can be used by runtime drivers after ExitBootServices(). It is different from the PI 1.2 CPU I/O 2 Protocol, which is a boot services only protocol and may not be used by runtime drivers after ExitBootServices(). Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent @par Revision Reference: CPU IO Protocol is defined in Framework of EFI CPU IO Protocol Spec Version 0.9. **/ #ifndef _CPUIO_H_ #define _CPUIO_H_ #include #define EFI_CPU_IO_PROTOCOL_GUID \ { \ 0xB0732526, 0x38C8, 0x4b40, {0x88, 0x77, 0x61, 0xC7, 0xB0, 0x6A, 0xAC, 0x45 } \ } // // Framework CPU IO protocol structure is the same as CPU IO 2 protocol defined in PI 1.2 spec. // However, there is a significant different between the Framework CPU I/O // Protocol and the PI 1.2 CPU I/O 2 Protocol. The Framework one is a runtime // protocol, which means it can be used by runtime drivers after ExitBootServices(). // The PI one is not runtime safe, so it is a boot services only protocol and may // not be used by runtime drivers after ExitBootServices(). // typedef EFI_CPU_IO2_PROTOCOL EFI_CPU_IO_PROTOCOL; extern EFI_GUID gEfiCpuIoProtocolGuid; #endif