1 /* 2 * Copyright 2018 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "config.h" 18 19 #include "ipmi.hpp" 20 #include "process.hpp" 21 #include "utils.hpp" 22 23 #include <host-ipmid/ipmid-api.h> 24 25 #include <cstdio> 26 #include <host-ipmid/iana.hpp> 27 #include <host-ipmid/oemrouter.hpp> 28 #include <memory> 29 30 /* TODO: Swap out once https://gerrit.openbmc-project.xyz/12743 is merged */ 31 namespace oem 32 { 33 constexpr auto blobTransferCmd = 128; 34 } // namespace oem 35 36 namespace blobs 37 { 38 39 static ipmi_ret_t handleBlobCommand(ipmi_cmd_t cmd, const uint8_t* reqBuf, 40 uint8_t* replyCmdBuf, size_t* dataLen) 41 { 42 /* It's holding at least a sub-command. The OEN is trimmed from the bytes 43 * before this is called. 44 */ 45 if ((*dataLen) < 1) 46 { 47 return IPMI_CC_INVALID; 48 } 49 50 Crc16 crc; 51 IpmiBlobHandler command = 52 validateBlobCommand(&crc, reqBuf, replyCmdBuf, dataLen); 53 if (command == nullptr) 54 { 55 return IPMI_CC_INVALID; 56 } 57 58 return processBlobCommand(command, getBlobManager(), &crc, reqBuf, 59 replyCmdBuf, dataLen); 60 } 61 62 /* TODO: this should come from the makefile or recipe... */ 63 constexpr auto expectedHandlerPath = "/usr/lib/blobs-ipmid"; 64 65 void setupBlobGlobalHandler() __attribute__((constructor)); 66 67 void setupBlobGlobalHandler() 68 { 69 oem::Router* oemRouter = oem::mutableRouter(); 70 std::fprintf(stderr, 71 "Registering OEM:[%#08X], Cmd:[%#04X] for Blob Commands\n", 72 oem::obmcOemNumber, oem::blobTransferCmd); 73 74 oemRouter->registerHandler(oem::obmcOemNumber, oem::blobTransferCmd, 75 handleBlobCommand); 76 77 /* Install handlers. */ 78 loadLibraries(expectedHandlerPath); 79 } 80 } // namespace blobs 81