09:53 <jmcneill> Getting the protocol handle will be something like this
09:53 <jmcneill> EFI_GUID RngProtocol = EFI_RNG_PROTOCOL_GUID;
09:53 <jmcneill> EFI_RNG_PROTOCOL rng;
09:53 <jmcneill> EFI_STATUS status;
09:53 <jmcneill> EFI_HANDLE rng_handle;
09:53 <jmcneill> UINTN nrng_handle;
09:53 <jmcneill> status = LibLocateHandle(ByProtocol, &RngProtocol, NULL, &nrng_handle, &rng_handle);
09:53 <jmcneill> if (EFI_ERROR(status) || nrng_handle == 0)   // No RNG support
09:53 <jmcneill> ?return;
09:53 <jmcneill> status = uefi_call_wrapper(BS->HandleProtocol, 3, rng_handle[0], &RngProtocol, (void **)&rng);
09:53 <jmcneill> if (EFI_ERROR(status))
09:53 <jmcneill> ?return;
09:53 <jmcneill> Then function calls will be like
09:53 <jmcneill> EFI_RNG_ALGORITHM alg[SIZE];
09:53 <jmcneill> UINTN algsz = sizeof(alg);
09:54 <jmcneill> status = uefi_call_wrapper(rng->GetInfo, 3, rng, &algsz, alg);
09:54 <jmcneill> altho I tihnk there is an easier way..
09:55 <jmcneill> maybe status = LibLocateProtocol(&RngProtocol, (void **)&rng);
09:55 <jmcneill> Yeah, LibLocateProtocol returns the first handle
09:56 <jmcneill> So only one line of code!