diff --git a/cmake/Makefile.sample b/cmake/Makefile.sample
index c64668b8b..080fca5d2 100644
--- a/cmake/Makefile.sample
+++ b/cmake/Makefile.sample
@@ -101,7 +101,7 @@ endif
 # The "prep" step requires extra options that are specified via environment variables.
 # Certain special ones should be passed via cache (-D) options to CMake.
 # These are only needed for the "prep" target but they are computed globally anyway.
-PREP_OPTS :=
+PREP_OPTS := -DCFE_EDS_ENABLED_BUILD=TRUE
 
 ifneq ($(INSTALLPREFIX),)
 PREP_OPTS += -DCMAKE_INSTALL_PREFIX=$(INSTALLPREFIX)
diff --git a/modules/core_api/arch_build.cmake b/modules/core_api/arch_build.cmake
index be7d5edc3..4b1c90a73 100644
--- a/modules/core_api/arch_build.cmake
+++ b/modules/core_api/arch_build.cmake
@@ -23,6 +23,8 @@ foreach(CORE_API_CFGFILE ${CORE_API_PLATFORM_CONFIG_FILE_LIST})
   get_filename_component(CFGKEY "${CORE_API_CFGFILE}" NAME_WE)
   if (DEFINED CORE_API_CFGFILE_SRC_${CFGKEY})
     set(DEFAULT_SOURCE GENERATED_FILE "${CORE_API_CFGFILE_SRC_${CFGKEY}}")
+  elseif (CFE_EDS_ENABLED_BUILD AND EXISTS "${CMAKE_CURRENT_LIST_DIR}/config/default_eds_${CORE_API_CFGFILE}")
+    set(DEFAULT_SOURCE FALLBACK_FILE "${CMAKE_CURRENT_LIST_DIR}/config/default_eds_${CORE_API_CFGFILE}")
   else()
     set(DEFAULT_SOURCE FALLBACK_FILE "${CMAKE_CURRENT_LIST_DIR}/config/default_${CORE_API_CFGFILE}")
   endif()
diff --git a/modules/core_api/config/default_eds_cfe_core_api_base_msgids.h b/modules/core_api/config/default_eds_cfe_core_api_base_msgids.h
new file mode 100644
index 000000000..74bbdd48b
--- /dev/null
+++ b/modules/core_api/config/default_eds_cfe_core_api_base_msgids.h
@@ -0,0 +1,68 @@
+/************************************************************************
+ * NASA Docket No. GSC-18,719-1, and identified as “core Flight System: Bootes”
+ *
+ * Copyright (c) 2020 United States Government as represented by the
+ * Administrator of the National Aeronautics and Space Administration.
+ * All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License. You may obtain
+ * a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ ************************************************************************/
+
+/**
+ * @file
+ *
+ * This header file contains the platform-specific base msg ID values and
+ * logic to convert a topic ID to a message ID value.
+ *
+ */
+
+#ifndef CFE_CORE_BASE_MSGIDS_H
+#define CFE_CORE_BASE_MSGIDS_H
+
+/**
+ * \brief Convert a command topic ID to a MsgID value
+ *
+ * \note The result of this conversion is a simple integer, thus also needs to
+ * go through CFE_SB_ValueToMsgId() to obtain a properly-typed CFE_SB_MsgId_t
+ * for interacting with SB APIs.
+ */
+#define CFE_PLATFORM_CMD_TOPICID_TO_MIDV(topic) CFE_SB_LocalCmdTopicIdToMsgId(topic)
+
+/**
+ * \brief Convert a telemetry topic ID to a MsgID value
+ *
+ * \note The result of this conversion is a simple integer, thus also needs to
+ * go through CFE_SB_ValueToMsgId() to obtain a properly-typed CFE_SB_MsgId_t
+ * for interacting with SB APIs.
+ */
+#define CFE_PLATFORM_TLM_TOPICID_TO_MIDV(topic) CFE_SB_LocalTlmTopicIdToMsgId(topic)
+
+/**
+ * \brief Convert a "global" command topic ID to a MsgID value
+ *
+ * A global command is one that is not specific to an individual instance of CFE,
+ * but rather intended to be broadcast to all CFE instances at the same time.
+ *
+ * This is otherwise identical to #CFE_PLATFORM_CMD_TOPICID_TO_MIDV
+ */
+#define CFE_GLOBAL_CMD_TOPICID_TO_MIDV(topic) CFE_SB_GlobalCmdTopicIdToMsgId(topic)
+
+/**
+ * \brief Convert a "global" telemetry topic ID to a MsgID value
+ *
+ * A global telemetry is one that is not specific to an individual instance of CFE,
+ * but rather intended to be broadcast to all CFE instances at the same time.
+ *
+ * This is otherwise identical to #CFE_PLATFORM_TLM_TOPICID_TO_MIDV
+ */
+#define CFE_GLOBAL_TLM_TOPICID_TO_MIDV(topic) CFE_SB_GlobalTlmTopicIdToMsgId(topic)
+
+#endif /* CFE_CORE_BASE_MSGIDS_H */