Thanks Andrew. -----Original Message----- From: Andrew Fish [mailto:af...@apple.com] Sent: Monday, July 27, 2015 9:21 PM To: Prasad, Parmeshwr Cc: edk2-devel@lists.sourceforge.net Subject: Re: what is way the to check available RT services
> On Jul 27, 2015, at 12:33 AM, parmeshwr_pra...@dell.com wrote: > > > Hi All, > > I wanted to know what is the way to know that particular RT is available in > my system or not ? > What will be a piece of code for this. > The EFI_TABLE_HEADER has a Revision field you can check. So you can check the version in the EFI_RUNTIME_SERVICES table. https://github.com/tianocore/edk2/blob/master/MdePkg/Include/Uefi/UefiSpec.h // // EFI Runtime Services Table // #define EFI_SYSTEM_TABLE_SIGNATURE SIGNATURE_64 ('I','B','I',' ','S','Y','S','T') #define EFI_2_50_SYSTEM_TABLE_REVISION ((2 << 16) | (50)) #define EFI_2_40_SYSTEM_TABLE_REVISION ((2 << 16) | (40)) #define EFI_2_31_SYSTEM_TABLE_REVISION ((2 << 16) | (31)) #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) #define EFI_SYSTEM_TABLE_REVISION EFI_2_50_SYSTEM_TABLE_REVISION #define EFI_SPECIFICATION_VERSION EFI_SYSTEM_TABLE_REVISION #define EFI_RUNTIME_SERVICES_SIGNATURE SIGNATURE_64 ('R','U','N','T','S','E','R','V') #define EFI_RUNTIME_SERVICES_REVISION EFI_SPECIFICATION_VERSION /// /// EFI Runtime Services Table. /// typedef struct { /// /// The table header for the EFI Runtime Services Table. /// EFI_TABLE_HEADER Hdr; // // Time Services // EFI_GET_TIME GetTime; EFI_SET_TIME SetTime; EFI_GET_WAKEUP_TIME GetWakeupTime; EFI_SET_WAKEUP_TIME SetWakeupTime; // // Virtual Memory Services // EFI_SET_VIRTUAL_ADDRESS_MAP SetVirtualAddressMap; EFI_CONVERT_POINTER ConvertPointer; // // Variable Services // EFI_GET_VARIABLE GetVariable; EFI_GET_NEXT_VARIABLE_NAME GetNextVariableName; EFI_SET_VARIABLE SetVariable; // // Miscellaneous Services // EFI_GET_NEXT_HIGH_MONO_COUNT GetNextHighMonotonicCount; EFI_RESET_SYSTEM ResetSystem; // // UEFI 2.0 Capsule Services // EFI_UPDATE_CAPSULE UpdateCapsule; EFI_QUERY_CAPSULE_CAPABILITIES QueryCapsuleCapabilities; // // Miscellaneous UEFI 2.0 Service // EFI_QUERY_VARIABLE_INFO QueryVariableInfo; } EFI_RUNTIME_SERVICES; Thanks, Andrew Fish > -Param
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