CC312: Fork CC312 runtime library inside tf-m

Files from https://github.com/ARM-software/cryptocell-312-runtime, on
commit a31f19d6fa2173c53f5181a90af100866a78c314

Change-Id: Idd00e58a5bb694de978207823e7553ec051a67ed
Signed-off-by: Raef Coles <raef.coles@arm.com>
diff --git a/lib/ext/cryptocell-312-runtime/prepare_mbedtls.sh b/lib/ext/cryptocell-312-runtime/prepare_mbedtls.sh
new file mode 100755
index 0000000..76a95d0
--- /dev/null
+++ b/lib/ext/cryptocell-312-runtime/prepare_mbedtls.sh
@@ -0,0 +1,204 @@
+#===============================================================================
+# Copyright (c) 2001-2019, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+#===============================================================================
+
+#!/bin/bash
+PROJ_ROOT=$(pwd)
+MBEDTLS_ROOT_DIR=$PROJ_ROOT/mbedtls
+HOST_PROJ_ROOT=$PROJ_ROOT/host
+MBEDTLS_ALT_API=$PROJ_ROOT/shared/include/mbedtls
+MBEDTLS_PAL_INCDIRS+="$PROJ_ROOT/shared/include $PROJ_ROOT/shared/hw/include $PROJ_ROOT/shared/include/pal $PROJ_ROOT/shared/include/proj/cc3x $PROJ_ROOT/host/src/tests/common"
+MBEDTLS_CFLAGS=" -DUSE_MBEDTLS_CRYPTOCELL -I$MBEDTLS_ALT_API -I$PROJ_ROOT/host/include -I$PROJ_ROOT/shared/include/crypto_api/cc3x/ -I$PROJ_ROOT/shared/include/crypto_api/"
+#=========================== BUILD MBEDTLS LIBRARIES ==============================
+
+
+CORTEX=$ARM_CPU
+
+if [ "$CROSS_COMPILE" == "armcc" ]; then
+	TEE_OS=freertos
+elif [ "$CROSS_COMPILE" == "arm-xilinx-linux-gnueabi-" ]; then
+	TEE_OS=linux
+elif [ "$CROSS_COMPILE" == "arm-none-eabi-" ]; then
+	if [ "$CORTEX" == "cortex-m33" ] || [ "$CORTEX" == "cortex-m3" ]; then
+		TEE_OS=freertos
+	else
+		TEE_OS=no_os
+	fi
+elif [ "$CROSS_COMPILE" == "armclang" ]; then
+	TEE_OS=freertos
+fi
+
+# Set mbedtls_cflags according to the target's operating system (TEE_OS)
+if [ "$TEE_OS" == "freertos" ]; then
+    MBEDTLS_LDFLAGS+="-L$PROJ_ROOT/host/lib/libcc_312.a "
+    MBEDTLS_CFLAGS+=" -DMBEDTLS_CONFIG_FILE='<config-cc312-mps2-freertos.h>' "
+    MBEDTLS_CFLAGS+=" -I$KERNEL_DIR/OS/FreeRTOS/Source/include/"
+    MBEDTLS_PAL_INCDIRS+=" $PROJ_ROOT/shared/include/pal/freertos/"
+
+    if [ "$CROSS_COMPILE" == "armcc" ]; then
+        MBEDTLS_CFLAGS+=" -DARMCM3 "
+        MBEDTLS_CFLAGS+=" -I$KERNEL_DIR/OS/FreeRTOS/Source/portable/ARMCC/ARM_CM3/ "
+        MBEDTLS_CFLAGS+=" --cpu=cortex-m3 "
+    elif [ "$CROSS_COMPILE" == "arm-none-eabi-" ]; then
+        if [ "$CORTEX" == "cortex-m3" ]; then
+            MBEDTLS_CFLAGS +=" -mcpu=cortex-m3 "
+            MBEDTLS_CFLAGS+=" -DARMCM3 "
+            MBEDTLS_CFLAGS+=" -I$KERNEL_DIR/OS/FreeRTOS/Source/portable/GCC/ARM_CM3/ "
+        elif [ "$CORTEX" == "cortex-m33" ]; then
+            MBEDTLS_CFLAGS+=" -march=armv8-m.main "
+            MBEDTLS_CFLAGS+=" -mcmse "
+            MBEDTLS_CFLAGS+=" -DSSE_200 "
+            MBEDTLS_CFLAGS+=" -I$KERNEL_DIR/OS/FreeRTOS/Source/portable/GCC/ARM_CM33/ "
+        fi
+    elif [ "$CROSS_COMPILE" == "armclang" ]; then
+        if [ "$CORTEX" == "cortex-m3" ]; then
+            MBEDTLS_CFLAGS+=" --target=arm-arm-none-eabi -mcpu=cortex-m3 "
+            MBEDTLS_CFLAGS+=" -mlittle-endian -xc "
+            MBEDTLS_CFLAGS+=" -DARMCM3 "
+            MBEDTLS_CFLAGS+=" -I$KERNEL_DIR/OS/FreeRTOS/Source/portable/ARMCLANG/ARM_CM3/ "
+        elif [ "$CORTEX" == "cortex-m33" ]; then
+            MBEDTLS_CFLAGS+=" --target=arm-arm-none-eabi -march=armv8-m.main "
+            MBEDTLS_CFLAGS+=" -mlittle-endian -xc "
+            MBEDTLS_CFLAGS+=" -mcmse "
+            MBEDTLS_CFLAGS+=" -mfpu=none "
+            MBEDTLS_CFLAGS+=" -DSSE_200 "
+            MBEDTLS_CFLAGS+=" -I$KERNEL_DIR/OS/FreeRTOS/Source/portable/ARMCLANG/ARM_CM33/ "
+        fi
+    fi
+fi
+
+if [ "$TEE_OS" == "no_os" ]; then
+    MBEDTLS_CFLAGS+=" -DMBEDTLS_CONFIG_FILE='<config-cc312-mps2-no-os.h>' "
+    MBEDTLS_PAL_INCDIRS+=" $PROJ_ROOT/shared/include/pal/no_os/"
+fi
+
+if [ "$TEE_OS" == "linux" ]; then
+    MBEDTLS_CFLAGS+=" -DMBEDTLS_CONFIG_FILE='<config-cc312.h>' "
+fi
+
+if [ "$CROSS_COMPILE" == "armcc" ]; then
+    export CC="armcc"
+    export AR="armar"
+    MBEDTLS_CFLAGS+=" --thumb "
+
+    # Suppresses license management warning
+    MBEDTLS_CFLAGS+=" --diag_suppress 9931 "
+
+    MBEDTLS_LDFLAGS+="-L$PROJ_ROOT/host/lib/libcc_312.a "
+    MBEDTLS_TESTS_SRCFILES+="$PROJ_ROOT/host/src/tests/common/tests_hw_access_freertos.c $PROJ_ROOT/host/src/tests/common/tests_phys_map_freertos.c"
+
+	if [ -d $MBEDTLS_ROOT_DIR ]; then
+        #surpress warning levels in library makefile as arm-compiler-5 armcc does not seem to supoort it.
+	    sed -i '/WARNING_CFLAGS /d' $MBEDTLS_ROOT_DIR/library/Makefile
+
+	    #change debug flag -g3 to -g to comply with arm-compiler-5 armcc flags
+	    sed -i 's|g3|g| g ' $MBEDTLS_ROOT_DIR/library/Makefile
+    fi
+elif [ "$CROSS_COMPILE" == "arm-xilinx-linux-gnueabi-" ]; then
+
+    export CC="arm-xilinx-linux-gnueabi-gcc"
+    export AR="arm-xilinx-linux-gnueabi-ar"
+
+    MBEDTLS_TESTS_LDFLAGS+="-L../../host/lib -lpal_linux -lcc_312 -lpthread "
+    # as we cannot change mbedtls Makefile, we add these libs before mbedtls* in order to pass link
+    export LOCAL_LDFLAGS+="-L$PROJ_ROOT/host/lib -L$PROJ_ROOT/mbedtls/library -Wl,--start-group -lcc_312 "
+    export LOCAL_LDFLAGS+="-lmbedtls "
+    export LOCAL_LDFLAGS+="-lmbedx509 "
+    export LOCAL_LDFLAGS+="-lmbedcrypto "
+    export LOCAL_LDFLAGS+="-Wl,--end-group "
+
+    MBEDTLS_PAL_INCDIRS+=" $PROJ_ROOT/shared/include/pal/cc_linux/"
+    MBEDTLS_TESTS_SRCFILES+="$PROJ_ROOT/host/src/tests/common/tests_hw_access_iot.c $PROJ_ROOT/host/src/tests/common/tests_phys_map.c"
+
+    # make sure mbedTLS library makefile is untouched (from above section)
+    if [ -d $MBEDTLS_ROOT_DIR ];
+    then
+        cd $MBEDTLS_ROOT_DIR
+        git checkout -q -- $MBEDTLS_ROOT_DIR/library/Makefile
+    fi
+elif [ "$CROSS_COMPILE" == "arm-none-eabi-" ]; then
+    export CC="arm-none-eabi-gcc"
+    export AR="arm-none-eabi-ar"
+    MBEDTLS_CFLAGS+=" -mthumb "
+    MBEDTLS_PAL_INCDIRS+=" $MBEDTLS_ROOT_DIR/include/mbedtls"
+elif [ "$CROSS_COMPILE" == "armclang" ]; then
+    export CC="armclang"
+    export AR="armar"
+    MBEDTLS_CFLAGS+=" -mthumb "
+    MBEDTLS_CFLAGS+=" -Wno-license-management "
+    MBEDTLS_PAL_INCDIRS+=" $MBEDTLS_ROOT_DIR/include/mbedtls "
+else
+    export CC="cc"
+    export AR="ar"
+fi
+
+MBEDTLS_CFLAGS+=-I${MBEDTLS_PAL_INCDIRS// / -I}
+
+if [ "$DEBUG" == "" ]; then
+    MBEDTLS_CFLAGS+=" -O2"
+fi
+
+function mbedtls_git
+{
+    cd $PROJ_ROOT
+    if [ ! -d $MBEDTLS_ROOT_DIR ];
+    then
+        echo "cloning mbedtls into $MBEDTLS_ROOT_DIR"
+        git clone -b "mbedtls-2.16.2"  https://github.com/ARMmbed/mbedtls.git $MBEDTLS_ROOT_DIR
+    else
+        echo "rebase mbedtls $MBEDTLS_ROOT_DIR"
+        cd $MBEDTLS_ROOT_DIR
+        git pull --rebase
+    fi
+}
+
+
+function mbedtls_build_lib
+{
+    cd $MBEDTLS_ROOT_DIR
+    echo CFLAGS=$MBEDTLS_CFLAGS
+    CFLAGS=$MBEDTLS_CFLAGS make -j8 lib
+
+    if [[ $? -ne 0 ]]; then
+        exit 1;
+    fi
+
+    if [[ "$CROSS_COMPILE" == "armcc" ]] || [[ "$CROSS_COMPILE" == "arm-none-eabi-" ]] || [[ "$CROSS_COMPILE" == "armclang" ]]; then
+        sync
+        cd $MBEDTLS_ROOT_DIR
+        cp `find library/ -name *.a` $KERNEL_DIR/lib/
+    fi
+}
+
+#============================== CLEAN MBEDTLS =================================
+function mbedtls_clean
+{
+    cd $PROJ_ROOT/mbedtls
+    make clean
+}
+if [ "$#" == "0" ];
+then
+    echo "Usage: $0 clone|lib|all"
+    exit 1
+fi
+
+MODE=$1
+
+echo Running prepare_mbedtls.sh with $MODE
+if [ "$MODE" == "clone" ] || [ "$MODE" == "all" ]
+then
+    mbedtls_git
+fi
+
+if [ "$MODE" == "lib" ] || [ "$MODE" == "all" ]
+then
+    mbedtls_build_lib
+fi
+
+if [ "$MODE" == "clean" ]
+then
+    mbedtls_clean
+fi