[Silabs] Build Openthread from Gecko SDK sources (#24849)

* Use GSDK openthread sources

* fix ot cert libs

* Remove recursive flag for efr32 builds

* bypass case sensitivity

* correct path

* fix ot-efr32 path

.github/workflows/examples-efr32.yaml

@@ -51,7 +51,7 @@ jobs:
           attempt_limit: 3
           attempt_delay: 2000
       - name: Checkout submodules
-        run: scripts/checkout_submodules.py --shallow --recursive --platform efr32
+        run: scripts/checkout_submodules.py --shallow --platform efr32
 
       # - name: Out of Tree verification
       #   run: third_party/silabs/out_of_tree_verification.sh

build_overrides/ot_efr32.gni

@@ -0,0 +1,17 @@
+# Copyright (c) 2023 Project CHIP Authors
+#
+# 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.
+
+declare_args() {
+  openthread_efr32_root = "//third_party/silabs/gecko_sdk/protocol/openthread/platform-abstraction/efr32"
+}

examples/build_overrides/ot_efr32.gni

@@ -13,6 +13,5 @@
 # limitations under the License.
 
 declare_args() {
-  openthread_efr32_root =
-      "//third_party/connectedhomeip/third_party/openthread/ot-efr32"
+  openthread_efr32_root = "//third_party/connectedhomeip/third_party/silabs/gecko_sdk/protocol/openthread/platform-abstraction/efr32"
 }

examples/platform/silabs/efr32/FreeRTOSConfig.h

@@ -209,9 +209,13 @@ See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #ifndef configTOTAL_HEAP_SIZE
 #ifdef SL_WIFI
 #define configTOTAL_HEAP_SIZE ((size_t)(34 * 1024))
+#else // SL_WIFI
+#if SL_CONFIG_OPENTHREAD_LIB == 1
+#define configTOTAL_HEAP_SIZE ((size_t)(22 * 1024))
 #else
 #define configTOTAL_HEAP_SIZE ((size_t)(20 * 1024))
-#endif
+#endif // SL_CONFIG_OPENTHREAD_LIB
+#endif // configTOTAL_HEAP_SIZE
 #endif // configTOTAL_HEAP_SIZE
 
 /* Optional functions - most linkers will remove unused functions anyway. */

scripts/examples/gn_efr32_example.sh

@@ -171,6 +171,11 @@ else
                 optArgs+="use_silabs_thread_lib=true chip_openthread_target=$SILABS_THREAD_TARGET openthread_external_platform=\"""\" use_thread_coap_lib=true "
                 shift
                 ;;
+            # Option not to be used until ot-efr32 github is updated
+            # --use_ot_github_sources)
+            #   optArgs+="openthread_root=\"//third_party/connectedhomeip/third_party/openthread/ot-efr32/openthread\" openthread_efr32_root=\"//third_party/connectedhomeip/third_party/openthread/ot-efr32/src/src\""
+            #    shift
+            #    ;;
             --no-version)
                 USE_GIT_SHA_FOR_VERSION=false
                 shift

src/platform/silabs/EFR32/args.gni

@@ -47,7 +47,9 @@ chip_build_tests = false
 # examples/platform/silabs/efr32/EFR32DeviceDataProvider is now used.
 chip_use_transitional_commissionable_data_provider = false
 
-openthread_root = "${chip_root}/third_party/openthread/ot-efr32/openthread"
+openthread_root =
+    "${chip_root}/third_party/silabs/gecko_sdk/util/third_party/openthread"
+
 openthread_core_config_platform_check_file =
     "openthread-core-efr32-config-check.h"
 openthread_project_core_config_file = "OpenThreadConfig.h"

third_party/openthread/platforms/efr32/BUILD.gn

@@ -16,11 +16,12 @@ import("//build_overrides/chip.gni")
 import("//build_overrides/efr32_sdk.gni")
 import("//build_overrides/openthread.gni")
 
+import("//build_overrides/openthread.gni")
+import("//build_overrides/ot_efr32.gni")
+
 import("${efr32_sdk_build_root}/efr32_sdk.gni")
 import("${efr32_sdk_build_root}/silabs_board.gni")
 
-openthread_efr32_root = "${chip_root}/third_party/openthread/ot-efr32"
-
 config("openthread_efr32_config") {
   defines = [
     "RADIO_CONFIG_DMP_SUPPORT=1",
@@ -31,15 +32,18 @@ config("openthread_efr32_config") {
   include_dirs = [
     "${chip_root}/examples/platform/efr32",
     "${sdk_support_root}/matter/efr32/${silabs_family}/${silabs_board}",
-    "${openthread_efr32_root}/src/src",
+    "${openthread_efr32_root}",
   ]
+
+  # temporarily disable check until gsdk pulls in a more recent version of openthread
+  cflags = [ "-Wno-format-nonliteral" ]
 }
 
 source_set("openthread_core_config_efr32") {
   sources = [
-    "${openthread_efr32_root}/openthread/src/cli/cli_config.h",
-    "${openthread_efr32_root}/src/src/openthread-core-efr32-config-check.h",
-    "${openthread_efr32_root}/src/src/openthread-core-efr32-config.h",
+    "${openthread_efr32_root}/openthread-core-efr32-config-check.h",
+    "${openthread_efr32_root}/openthread-core-efr32-config.h",
+    "${openthread_root}/src/cli/cli_config.h",
   ]
 
   public_deps = [ "${efr32_sdk_build_root}:efr32_sdk" ]
@@ -49,21 +53,21 @@ source_set("openthread_core_config_efr32") {
 
 source_set("libopenthread-efr32") {
   sources = [
-    "${openthread_efr32_root}/openthread/examples/apps/cli/cli_uart.cpp",
-    "${openthread_efr32_root}/src/src/alarm.c",
-    "${openthread_efr32_root}/src/src/crypto.c",
-    "${openthread_efr32_root}/src/src/entropy.c",
-    "${openthread_efr32_root}/src/src/flash.c",
-    "${openthread_efr32_root}/src/src/misc.c",
-    "${openthread_efr32_root}/src/src/radio.c",
-    "${openthread_efr32_root}/src/src/security_manager.c",
-    "${openthread_efr32_root}/src/src/sleep.c",
-    "${openthread_efr32_root}/src/src/system.c",
+    "${openthread_efr32_root}/alarm.c",
+    "${openthread_efr32_root}/crypto.c",
+    "${openthread_efr32_root}/entropy.c",
+    "${openthread_efr32_root}/flash.c",
+    "${openthread_efr32_root}/ieee802154-packet-utils.cpp",
+    "${openthread_efr32_root}/misc.c",
+    "${openthread_efr32_root}/radio.c",
+    "${openthread_efr32_root}/sleep.c",
+    "${openthread_efr32_root}/system.c",
+    "${openthread_root}/examples/apps/cli/cli_uart.cpp",
   ]
 
   public_deps = [
     ":openthread_core_config_efr32",
-    "${openthread_efr32_root}/openthread/src/core:libopenthread_core_headers",
+    "${openthread_root}/src/core:libopenthread_core_headers",
     "..:libopenthread-platform",
     "..:libopenthread-platform-utils",
   ]

third_party/silabs/BUILD.gn

@@ -47,9 +47,12 @@ group("efr32_sdk") {
   public_deps = [ efr32_sdk_target ]
 }
 
+# Openthread GSDK libraries configurations
 if (use_silabs_thread_lib) {
   config("libopenthread-platform_config") {
     include_dirs = [ "${sl_openthread_root}/examples/platforms" ]
+
+    defines = [ "SL_CONFIG_OPENTHREAD_LIB=1" ]
   }
 
   copy("copy_openthread_system") {

third_party/silabs/efr32_sdk.gni

@@ -70,6 +70,7 @@ template("efr32_sdk") {
     # Treat these includes as system includes, so warnings in them are not fatal.
     _include_dirs = [
       "${efr32_sdk_root}",
+      "${efr32_sdk_root}/util/plugin/security_manager/",
       "${efr32_sdk_root}/hardware/kit/common/bsp",
       "${efr32_sdk_root}/app/common/util/app_assert/",
       "${efr32_sdk_root}/hardware/board/inc",
@@ -544,6 +545,7 @@ template("efr32_sdk") {
       "${efr32_sdk_root}/protocol/bluetooth/src/sl_bt_stack_init.c",
       "${efr32_sdk_root}/protocol/bluetooth/src/sli_bt_advertiser_config.c",
       "${efr32_sdk_root}/protocol/bluetooth/src/sli_bt_connection_config.c",
+      "${efr32_sdk_root}/util/plugin/security_manager/security_manager.c",
       "${efr32_sdk_root}/util/silicon_labs/silabs_core/memory_manager/sl_malloc.c",
       "${efr32_sdk_root}/util/third_party/freertos/cmsis/Source/cmsis_os2.c",
       "${efr32_sdk_root}/util/third_party/freertos/kernel/croutine.c",