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 #include <phosphor-logging/log.hpp> 30 31 /* TODO: Swap out once https://gerrit.openbmc-project.xyz/12743 is merged */ 32 namespace oem 33 { 34 constexpr auto blobTransferCmd = 128; 35 } // namespace oem 36 37 namespace blobs 38 { 39 40 using namespace phosphor::logging; 41 42 static ipmi_ret_t handleBlobCommand(ipmi_cmd_t cmd, const uint8_t* reqBuf, 43 uint8_t* replyCmdBuf, size_t* dataLen) 44 { 45 /* It's holding at least a sub-command. The OEN is trimmed from the bytes 46 * before this is called. 47 */ 48 if ((*dataLen) < 1) 49 { 50 return IPMI_CC_INVALID; 51 } 52 53 Crc16 crc; 54 IpmiBlobHandler command = 55 validateBlobCommand(&crc, reqBuf, replyCmdBuf, dataLen); 56 if (command == nullptr) 57 { 58 return IPMI_CC_INVALID; 59 } 60 61 return processBlobCommand(command, getBlobManager(), &crc, reqBuf, 62 replyCmdBuf, dataLen); 63 } 64 65 /* TODO: this should come from the makefile or recipe... */ 66 constexpr auto expectedHandlerPath = "/usr/lib/blobs-ipmid"; 67 68 void setupBlobGlobalHandler() __attribute__((constructor)); 69 70 void setupBlobGlobalHandler() 71 { 72 oem::Router* oemRouter = oem::mutableRouter(); 73 std::fprintf(stderr, 74 "Registering OEM:[%#08X], Cmd:[%#04X] for Blob Commands\n", 75 oem::obmcOemNumber, oem::blobTransferCmd); 76 77 oemRouter->registerHandler(oem::obmcOemNumber, oem::blobTransferCmd, 78 handleBlobCommand); 79 80 /* Install handlers. */ 81 try 82 { 83 loadLibraries(expectedHandlerPath); 84 } 85 catch (const std::exception& e) 86 { 87 log<level::ERR>("ERROR loading blob handlers", 88 entry("ERROR=%s", e.what())); 89 } 90 } 91 } // namespace blobs 92