My app (UEFI spec 2.7) uses following protocols:&nbsp;<br />
<div>EFI_BOOT_SERVICES revision&nbsp;EFI_SPECIFICATION_VERSION</div>
<div>EFI_FILE_PROTOCOL revision 0x00020000</div>
<div>EFI_SIMPLE_FILE_SYSTEM_PROTOCOL 0x00010000<br />
<div>EFI_PEI_SERVICES - not found in UEFI specificaion</div>
<div>EFI_PEI_CPU_IO_PPI - not found in UEFI specificaion<br /><br />UEFI Specification 2.4 protocols:<br />
<div style="line-height: 1.42857;">EFI_BOOT_SERVICES revision&nbsp;EFI_SPECIFICATION_VERSION</div>
<div style="line-height: 1.42857;">EFI_FILE_PROTOCOL&nbsp;revision&nbsp;0x00020000</div>
<div style="line-height: 1.42857;">EFI_SIMPLE_FILE_SYSTEM_PROTOCOL 0x00010000<br /><br />So the main services API EFI_BOOT_SERVICES, where I'm using few common functions (OpenProtocol, AllocatePool...) differs from the EFI shell where app is using. Also there are protocols such as EFI_PEI_SERVICES and EFI_PEI_CPU_IO_PPI about which differences I can say nothing, so it is batter to find EDK2 with UEFI spec 2.4.<br /><br />Thank you,<br />Sergey<br /><br /></div>
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