babblesim: Rework sdk package

This moves all external components to separate sdk package. We'll link
both bsim components and nrfx there and setup include paths.

babblesim/sdk/.gitignore

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+components
+nrfx
+src

babblesim/sdk/pkg.yml

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+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+#
+
+pkg.name: babblesim/sdk
+pkg.type: sdk
+pkg.description: External files required to build BabbleSim
+pkg.author: "Apache Mynewt <[email protected]>"
+pkg.homepage: "https://mynewt.apache.org/"
+
+pkg.cflags: -std=gnu99
+
+pkg.include_dirs:
+  - components/ext_NRF52_hw_models/src/nrfx_config
+  - components/ext_NRF52_hw_models/src/nrfx/nrfx_replacements
+  - components/ext_NRF52_hw_models/src/nrfx/mdk_replacements
+  - components/ext_NRF52_hw_models/src/HW_models
+  - components/libUtilv1/src
+  - components/libPhyComv1/src
+  - components/libRandv2/src
+  - components/ext_libCryptov1/src
+  - nrfx
+  - nrfx/drivers
+  - nrfx/hal
+  - nrfx/mdk
+
+pkg.pre_build_cmds:
+  scripts/link_babblesim.sh: 1
+  scripts/link_nrfx.sh: 2
+
+pkg.lflags:
+  - -ldl

babblesim/sdk/scripts/link_babblesim.sh

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+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+#
+
+if [ -z ${BSIM_COMPONENTS_PATH+x} ]; then
+  echo "This board requires the BabbleSim simulator. Please set" \
+        "the environment variable BSIM_COMPONENTS_PATH to point to its components" \
+        "folder. More information can be found in" \
+        "https://babblesim.github.io/folder_structure_and_env.html"
+  exit 1
+fi
+
+if [ -z ${BSIM_OUT_PATH+x} ]; then
+  echo "This board requires the BabbleSim simulator. Please set" \
+        "the environment variable BSIM_OUT_PATH to point to the folder where the" \
+        "simulator is compiled to. More information can be found in" \
+        "https://babblesim.github.io/folder_structure_and_env.html"
+  exit 1
+fi
+
+ln -sfn "${BSIM_COMPONENTS_PATH}" ./components
+
+mkdir -p ./src/
+cp "${BSIM_OUT_PATH}"/lib/*.32.a ./src/
+
+# XXX: Workaround for bad linking by newt. Sometimes newt will link
+# nrf weak functions from nrf_hal_originals.o instead of their BabbleSim
+# replacements inside libNRF52_hw_models.32.a. But as long as the other
+# weak functions, that do not have their replacements, are not used,
+# we can just remove the file from the .a library here.
+ar d ./src/libNRF52_hw_models.32.a nrf_hal_originals.o

babblesim/sdk/scripts/link_nrfx.sh

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+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+#
+
+ln -sfn ${NRFX_BASE} ./nrfx