diff --git a/src/iei_oem.cpp b/src/iei_oem.cpp
new file mode 100644
index 0000000..36087a6
--- /dev/null
+++ b/src/iei_oem.cpp
@@ -0,0 +1,178 @@
+#include "config.h"
+
+#include "iei_oem.hpp"
+
+#include "sdbus_wrapper.hpp"
+#include "utils.hpp"
+
+#include <ipmid/api.h>
+
+#include <phosphor-logging/log.hpp>
+
+#include <optional>
+
+namespace
+{
+constexpr auto FIRMWARE_TYPE_OFFSET = 0;
+constexpr auto FIRMWARE_TYPE_SIZE = 1;
+constexpr auto FIRMWARE_VERSION_OFFSET =
+    FIRMWARE_TYPE_OFFSET + FIRMWARE_TYPE_SIZE;
+constexpr auto FIRMWARE_VERSION_SIZE = 15;
+constexpr auto FIRMWARE_BUILDTIME_OFFSET =
+    FIRMWARE_VERSION_OFFSET + FIRMWARE_VERSION_SIZE;
+constexpr auto FIRMWARE_BUILDTIME_SIZE = 20;
+constexpr auto FIRMWARE_MIN_SIZE = FIRMWARE_BUILDTIME_OFFSET;
+
+static_assert(FIRMWARE_VERSION_OFFSET == 1);
+static_assert(FIRMWARE_BUILDTIME_OFFSET == 16);
+} // namespace
+
+namespace ipmi
+{
+
+#define UNUSED(x) (void)(x)
+
+using namespace phosphor::logging;
+using namespace iei;
+
+static void registerOEMFunctions() __attribute__((constructor));
+static auto& bus = getBus();
+
+struct ParsedAssetInfo
+{
+    uint8_t rwFlag;
+    uint8_t deviceType;
+    uint8_t infoType;
+    uint8_t maskAllPresentLen;
+    std::vector<uint8_t> enableStatus;
+    std::vector<uint8_t> maskPresent;
+    std::vector<uint8_t> maskAllPresent;
+    uint8_t allInfoDone;
+    uint16_t totalMessageLen;
+    std::vector<uint8_t> data;
+};
+
+void dumpAssetInfo(const ParsedAssetInfo& info)
+{
+    fprintf(stderr,
+            "AssetInfo: rw %d, deviceType 0x%02x, infoType 0x%02x, "
+            "maskAllPresentLen %u\n",
+            info.rwFlag, info.deviceType, info.infoType,
+            info.maskAllPresentLen);
+    fprintf(stderr, "enableStatus ");
+    for (const auto& d : info.enableStatus)
+    {
+        fprintf(stderr, "0x%02x ", d);
+    }
+    fprintf(stderr, "\nmaskPresent ");
+    for (const auto& d : info.maskPresent)
+    {
+        fprintf(stderr, "0x%02x ", d);
+    }
+    fprintf(stderr, "\nmaskAllPresent ");
+    for (const auto& d : info.maskAllPresent)
+    {
+        fprintf(stderr, "0x%02x ", d);
+    }
+    fprintf(stderr, "\nallInfoDone %d, totalMessageLen %u\n", info.allInfoDone,
+            info.totalMessageLen);
+    fprintf(stderr, "data: ");
+    for (const auto& d : info.data)
+    {
+        fprintf(stderr, "0x%02x ", d);
+    }
+    fprintf(stderr, "\n");
+}
+
+std::optional<ParsedAssetInfo> parseAssetInfo(const AssetInfoHeader* h)
+{
+    auto len = h->maskAllPresentLen;
+    if (len == 0)
+    {
+        // This is invalid
+        return {};
+    }
+
+    ParsedAssetInfo info;
+    info.rwFlag = h->rwFlag;
+    info.deviceType = h->deviceType;
+    info.infoType = h->infoType;
+    info.maskAllPresentLen = len;
+    info.enableStatus.resize(len);
+    info.maskPresent.resize(len);
+    info.maskAllPresent.resize(len);
+    const uint8_t* p = &h->enableStatus;
+    memcpy(info.enableStatus.data(), p, len);
+    p += len;
+    memcpy(info.maskPresent.data(), p, len);
+    p += len;
+    memcpy(info.maskAllPresent.data(), p, len);
+    p += len;
+    info.allInfoDone = *p++;
+    info.totalMessageLen = *reinterpret_cast<const uint16_t*>(p);
+    p += sizeof(uint16_t);
+    auto dataLen = info.totalMessageLen - (sizeof(AssetInfoHeader) + 3 * len);
+    info.data.resize(dataLen);
+    memcpy(info.data.data(), p, dataLen);
+
+    //    dumpAssetInfo(info);
+    return info;
+}
+
+void parseBIOSInfo(const std::vector<uint8_t>& data)
+{
+    if (data.size() < FIRMWARE_MIN_SIZE)
+    {
+        return;
+    }
+    bios_version_devname dev = static_cast<bios_version_devname>(data[0]);
+    std::string version{data.data() + FIRMWARE_VERSION_OFFSET,
+                        data.data() + FIRMWARE_VERSION_SIZE};
+    std::string buildTime;
+    if (dev == bios_version_devname::BIOS)
+    {
+        buildTime.assign(reinterpret_cast<const char*>(
+                             data.data() + FIRMWARE_BUILDTIME_OFFSET),
+                         FIRMWARE_BUILDTIME_SIZE);
+
+        // Set BIOS version
+        auto service = utils::getService(bus, BIOS_OBJPATH, VERSION_IFACE);
+        utils::setProperty(bus, service.c_str(), BIOS_OBJPATH, VERSION_IFACE,
+                           VERSION, version);
+    }
+
+    printf("Dev %s, version %s, build time %s\n",
+           bios_devname[static_cast<int>(dev)].data(), version.c_str(),
+           buildTime.c_str());
+}
+
+ipmi_ret_t ipmiOemIEIAssetInfo(ipmi_netfn_t /* netfn */, ipmi_cmd_t /* cmd */,
+                               ipmi_request_t request, ipmi_response_t response,
+                               ipmi_data_len_t /* data_len */,
+                               ipmi_context_t /* context */)
+{
+    auto header = reinterpret_cast<AssetInfoHeader*>(request);
+    uint8_t* res = reinterpret_cast<uint8_t*>(response);
+    UNUSED(res);
+
+    auto info = parseAssetInfo(header);
+    auto deviceType = info->deviceType;
+    if (deviceType != 0x05)
+    {
+        log<level::WARNING>("Device type not supported yet");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+
+    // For now we only support BIOS type
+    parseBIOSInfo(info->data);
+
+    return IPMI_CC_OK;
+}
+
+void registerOEMFunctions(void)
+{
+    ipmi_register_callback(NETFN_OEM_IEI, CMD_OEM_ASSET_INFO, nullptr,
+                           ipmiOemIEIAssetInfo, SYSTEM_INTERFACE);
+}
+
+} // namespace ipmi