Hello, Since UEFI systems use block I/O protocol to read data instead of INT 13h under legacy BIOS, we need to migrate our hibernation resuming filter driver under legacy BIOS to UEFI enviroment. With almost zero previous knowledge on EFI and by reading UEFI specificantion 2.3.1, I feel that block I/O protoclol filter driver could be a solution to filtering hibernation file during hibernation resuming. However, UEFI Driver Writer's Guide doesn't appear to contain a section on block I/O protocol filter driver.
So, my questions are: 1. Is it possible to replace legacy BIOS INT 13h hook with block I/O protocol filter driver under UEFI system to filter hibernation resuming file? 2. If the answer for question 1 is yes, then what are basic steps to register a block I/O protocol filter so that other drivers can attach to new protocol driver? 3. If I get the block io protocol by using HandleProtocol(), and allocate a structure containing my EFI_BLOCK_IO interface and a pointer to original block read function, will ReinstallProtocolInterface() detach existing consumers and then signaling drivers to attach to the new protocol interface? Any advise or suggestion would be appreciated. Thanks ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
