I think these questions could be answered in the attached email which I replied to Rudolph for similar questions. Thanks, Guo From: devel@edk2.groups.io On Behalf Of King Sumo Sent: Wednesday, March 23, 2022 2:06 PM To: devel@edk2.groups.io; Rhodes, Sean Cc: Dong, Guo Subject: Re: [edk2-devel] [PATCH 5/5] UefiPayloadPkg: Add support for Firmware Volume Block Protocol Looks like for Guo's patch SMMSTORE driver is not needed since it implements a SpiFlashLib for accessing the SPI Flash controller (via hardware sequencer) of Intel CPU targets... But this is for Universal Payload only right? I guess coreboot supports only the non-universal mode. This stuff was tested only in SBL right? On Wed, Mar 23, 2022 at 4:52 PM Sean Rhodes > wrote: Hey Guo To have the parselib and not SMMSTORE support is a bit of a paradox; coreboot isn't fully functional without one. I think moving this and any subsequent patches into edk2-platforms will inevitably lead to forks, which isn't beneficial to anyone. Is there any method (or ideally exception ;) ) you can suggest for allowing bootloader specific patches? Many thanks Sean