2 files changed, 115 insertions, 0 deletions
diff --git a/host/lib/utils/CMakeLists.txt b/host/lib/utils/CMakeLists.txt
index afaf99274..c7de9fbf8 100644
--- a/host/lib/utils/CMakeLists.txt
+++ b/host/lib/utils/CMakeLists.txt
@@ -160,6 +160,7 @@ SET_SOURCE_FILES_PROPERTIES(
 LIBUHD_APPEND_SOURCES(
     ${CMAKE_CURRENT_SOURCE_DIR}/csv.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/config_parser.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/compat_check.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/eeprom_utils.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/gain_group.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/ihex.cpp
diff --git a/host/lib/utils/compat_check.cpp b/host/lib/utils/compat_check.cpp
new file mode 100644
index 000000000..aebf6e6bf
--- /dev/null
+++ b/host/lib/utils/compat_check.cpp
@@ -0,0 +1,114 @@
+//
+// Copyright 2018 Ettus Research, a National Instruments Company
+//
+// SPDX-License-Identifier: GPL-3.0
+//
+
+#include <uhd/exception.hpp>
+#include <uhd/utils/log.hpp>
+#include <uhdlib/utils/compat_check.hpp>
+#include <boost/format.hpp>
+
+void uhd::assert_fpga_compat(
+    const size_t uhd_major,
+    const size_t uhd_minor,
+    const uint64_t fpga_compat,
+    const std::string& fpga_component,
+    const std::string& log_component,
+    const bool fail_on_minor_behind
+) {
+    const size_t fpga_major = fpga_compat >> 32;
+    const size_t fpga_minor = fpga_compat & 0xFFFFFFFF;
+
+    if (!log_component.empty()) {
+        UHD_LOGGER_DEBUG(log_component)
+            << "Checking compat number for FPGA component `" << fpga_component
+            << "': Expecting " << uhd_major << "." << uhd_minor << ", actual: "
+            << fpga_major << "." << fpga_minor << "."
+        ;
+    }
+
+    if (uhd_major > fpga_major) {
+        if (!log_component.empty()) {
+            UHD_LOGGER_ERROR(log_component)
+                << "Major compat number mismatch for " << fpga_component << ":"
+                   " Expecting " << uhd_major << ", got " << fpga_major << "."
+            ;
+        }
+        throw uhd::runtime_error(str(
+            boost::format("FPGA component `%s' is revision %d and UHD supports"
+                          " revision %d. Please either upgrade the FPGA"
+                          " image (recommended) or downgrade UHD.")
+            % fpga_component
+            % fpga_major
+            % uhd_major
+        ));
+    }
+    if (uhd_major < fpga_major) {
+        if (!log_component.empty()) {
+            UHD_LOGGER_ERROR(log_component)
+                << "Major compat number mismatch for " << fpga_component << ":"
+                " Expecting " << uhd_major << ", got " << fpga_major << "."
+            ;
+        }
+        throw uhd::runtime_error(str(
+            boost::format("FPGA component `%s' is revision %d and UHD supports"
+                          " revision %d. Please either upgrade UHD "
+                          " (recommended) or downgrade the FPGA image.")
+            % fpga_component
+            % fpga_major
+            % uhd_major
+        ));
+
+    }
+    if (uhd_minor > fpga_minor) {
+        if (fail_on_minor_behind) {
+            if (!log_component.empty()) {
+                UHD_LOGGER_ERROR(log_component) << str(
+                    boost::format("Minor compat number mismatch for `%s':"
+                                  " Expecting %d.%d, got %d.%d.")
+                    % fpga_component
+                    % uhd_major
+                    % uhd_minor
+                    % fpga_major
+                    % fpga_minor
+                );
+            }
+            throw uhd::runtime_error(str(
+                boost::format("FPGA component `%s' is revision %d.%d and UHD supports"
+                              " revision %d.%d. Please either upgrade UHD "
+                              " (recommended) or downgrade the FPGA image.")
+                % fpga_component
+                % fpga_major
+                % fpga_minor
+                % uhd_major
+                % uhd_minor
+            ));
+        } else {
+            if (!log_component.empty()) {
+                UHD_LOGGER_WARNING(log_component) << str(
+                    boost::format("Non-critical minor compat number mismatch "
+                                  "for `%s': Expecting %d.%d, got %d.%d.")
+                    % fpga_component
+                    % uhd_major
+                    % uhd_minor
+                    % fpga_major
+                    % fpga_minor
+                );
+            }
+        }
+    } else if (uhd_minor < fpga_minor) {
+        if (!log_component.empty()) {
+            UHD_LOGGER_WARNING(log_component) << str(
+                boost::format("Non-critical minor compat number mismatch "
+                              "for `%s': Expecting %d.%d, got %d.%d.")
+                % fpga_component
+                % uhd_major
+                % uhd_minor
+                % fpga_major
+                % fpga_minor
+            );
+        }
+    }
+    // We got here? Then all is good.
+}