mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
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146 lines
3.9 KiB
C
146 lines
3.9 KiB
C
/** @file
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Copyright (C) 2019, vit9696. All rights reserved.
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All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef OC_FIRMWARE_RUNTIME_PROTOCOL_H
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#define OC_FIRMWARE_RUNTIME_PROTOCOL_H
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#include <Uefi.h>
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#define OC_FIRMWARE_RUNTIME_REVISION 11
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/**
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OC_FIRMWARE_RUNTIME_PROTOCOL_GUID
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570332E4-FC50-4B21-ABE8-AE72F05B4FF7
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**/
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#define OC_FIRMWARE_RUNTIME_PROTOCOL_GUID \
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{ 0x570332E4, 0xFC50, 0x4B21, \
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{ 0xAB, 0xE8, 0xAE, 0x72, 0xF0, 0x5B, 0x4F, 0xF7 } }
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/**
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Configuration request to change firmware runtime behaviour.
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**/
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typedef struct OC_FWRT_CONFIG_ {
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///
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/// Enforce restricted access to OpenCore read-only and write-only GUIDs.
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///
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BOOLEAN RestrictedVariables;
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///
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/// Enforce BootXXXX variable redirection to OpenCore vendor GUID.
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///
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BOOLEAN BootVariableRedirect;
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///
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/// Make SetVariable do nothing and always return EFI_SECURITY_VIOLATION.
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/// When we do not want variables to be stored in NVRAM or NVRAM implementation
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/// is buggy we can disable variable writing.
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///
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BOOLEAN WriteProtection;
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///
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/// Make UEFI runtime services drop CR0 WP bit on calls to allow writing
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/// to read only memory. This workarounds a bug in many APTIO firmwares
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/// that do not survive W^X.
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/// Latest Windows brings Virtualization-based security and monitors
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/// CR0 by launching itself under a hypevisor. Since we need WP disable
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/// on macOS to let NVRAM work, and for the time being no other OS
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/// requires it, here we decide to use it for macOS exclusively.
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///
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BOOLEAN WriteUnprotector;
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///
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/// Secure boot variable protection.
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///
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BOOLEAN ProtectSecureBoot;
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} OC_FWRT_CONFIG;
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/**
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Get current used configuration data.
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@param[out] Config Current configuration to store.
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**/
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typedef
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VOID
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(EFIAPI *OC_FWRT_GET_CURRENT_CONFIG) (
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OUT OC_FWRT_CONFIG *Config
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);
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/**
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Set main configuration.
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@param[in] Config Runtime services configuration to apply.
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**/
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typedef
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VOID
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(EFIAPI *OC_FWRT_SET_MAIN_CONFIG) (
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IN CONST OC_FWRT_CONFIG *Config
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);
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/**
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Perform configuration override, NULL Config implies disable override.
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@param[in] Config Runtime services configuration to apply, optional.
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**/
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typedef
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VOID
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(EFIAPI *OC_FWRT_SET_OVERRIDE_CONFIG) (
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IN CONST OC_FWRT_CONFIG *Config OPTIONAL
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);
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/**
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Set GetVariable override for customising values.
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@param[in] GetVariable GetVariable to call on each call.
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@param[out] OrgGetVariable Original GetVariable to call from GetVariable.
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@retval EFI_SUCCESS on successful override.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *OC_FWRT_ON_GET_VARIABLE) (
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IN EFI_GET_VARIABLE GetVariable,
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OUT EFI_GET_VARIABLE *OrgGetVariable OPTIONAL
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);
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/**
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Obtain area that needs to be executable in OS runtime.
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@param[out] BaseAddress Executable area start.
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@param[out] Pages Number of executable pages.
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@retval EFI_SUCCESS on success.
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@retval EFI_UNSUPPORTED not required.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *OC_FWRT_GET_EXEC_AREA) (
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OUT EFI_PHYSICAL_ADDRESS *BaseAddress,
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OUT UINTN *Pages
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);
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/**
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Firmware runtime protocol instance.
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Check for revision to ensure binary compatibility.
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**/
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typedef struct {
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UINTN Revision;
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OC_FWRT_GET_CURRENT_CONFIG GetCurrent;
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OC_FWRT_SET_MAIN_CONFIG SetMain;
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OC_FWRT_SET_OVERRIDE_CONFIG SetOverride;
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OC_FWRT_ON_GET_VARIABLE OnGetVariable;
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OC_FWRT_GET_EXEC_AREA GetExecArea;
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} OC_FIRMWARE_RUNTIME_PROTOCOL;
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/**
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Firmware runtime protocol GUID.
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**/
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extern EFI_GUID gOcFirmwareRuntimeProtocolGuid;
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#endif // OC_FIRMWARE_RUNTIME_PROTOCOL_H
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