arm-toolchain: gcc-aarch64-none-elf: Add recipe

Adds a recipe to pull down the prebuilt GCC for compiling bare-metal targets
for Aarch64 processors from ARM.

Signed-off-by: Denys Dmytriyenko <denys@ti.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm-toolchain/recipes-devtools/external-arm-toolchain/gcc-aarch64-none-elf_9.2-2019.12.bb

@@ -0,0 +1,38 @@
+# Copyright (C) 2020 Texas Instruments Inc.
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+SUMMARY = "Baremetal GCC for Aarch64 processors"
+LICENSE = "GPL-3.0-with-GCC-exception & GPLv3"
+
+LIC_FILES_CHKSUM = "file://share/doc/gcc/GNU-Free-Documentation-License.html;md5=cc1e9a49a59ce7e6ae5ef37cd16eca0c"
+
+PROVIDES = "virtual/aarch64-none-elf-gcc"
+
+SRC_URI = "https://developer.arm.com/-/media/Files/downloads/gnu-a/9.2-2019.12/binrel/gcc-arm-${PV}-x86_64-aarch64-none-elf.tar.xz"
+
+SRC_URI[sha256sum] = "36d2cbe7c2984f2c20f562ac2f3ba524c59151adfa8ee10f1326c88de337b6d1"
+
+S = "${WORKDIR}/gcc-arm-${PV}-x86_64-aarch64-none-elf"
+
+COMPATIBLE_HOST = "x86_64.*-linux"
+
+do_install() {
+    install -d ${D}${datadir}/aarch64-none-elf/
+    cp -r ${S}/. ${D}${datadir}/aarch64-none-elf/
+
+    install -d ${D}${bindir}
+    # Symlink all executables into bindir
+    for f in ${D}${datadir}/aarch64-none-elf/bin/aarch64-none-elf-*; do
+        lnr $f ${D}${bindir}/$(basename $f)
+    done
+}
+
+FILES_${PN} = "${datadir} ${bindir}"
+
+INSANE_SKIP_${PN} = "already-stripped libdir staticdev file-rdeps"
+
+INHIBIT_SYSROOT_STRIP = "1"
+INHIBIT_PACKAGE_STRIP = "1"
+INHIBIT_PACKAGE_DEBUG_SPLIT = "1"
+
+BBCLASSEXTEND = "native nativesdk"