imx-atf: add IMX Arm Trusted Firmware support

Signed-off-by: Hector Palacios <hector.palacios@digi.com>

meta-digi-arm/recipes-bsp/imx-atf/imx-atf_1.4.1.bb

@@ -0,0 +1,66 @@
+# Copyright 2017 NXP
+
+DESCRIPTION = "i.MX ARM Trusted Firmware"
+SECTION = "BSP"
+LICENSE = "BSD-3-Clause"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/BSD-3-Clause;md5=550794465ba0ec5312d6919e203a55f9"
+
+inherit fsl-eula-unpack pkgconfig deploy
+
+PV = "1.4.1+git${SRCPV}"
+
+ATF_SRC ?= "git://source.codeaurora.org/external/imx/imx-atf.git;protocol=https"
+ATF_BRANCH = "imx_4.9.51_imx8_beta1"
+
+SRC_URI = "${ATF_SRC};branch=${ATF_BRANCH}"
+SRCREV = "a4388010f06ceb8fa9a33391bff47dabd027dbb1"
+
+S = "${WORKDIR}/git"
+
+BOOT_TOOLS = "imx-boot-tools"
+
+SOC_ATF ?= "imx8qm"
+SOC_ATF_mx8qm = "imx8qm"
+SOC_ATF_mx8qxp = "imx8qxp"
+SOC_ATF_mx8mq = "imx8mq"
+
+SYSROOT_DIRS += "/boot"
+
+do_compile () {
+    export CROSS_COMPILE="${TARGET_PREFIX}"
+    cd ${S}
+    # Clear LDFLAGS to avoid the option -Wl recognize issue
+    unset LDFLAGS
+
+    echo "-> Build ${SOC_ATF} bl31.bin"
+    # Set BUIL_STRING with the revision info
+    BUILD_STRING=""
+    if [ -e ${S}/.revision ]; then
+        cur_rev=`cat ${S}/.revision`
+        echo " Current revision is ${cur_rev} ."
+        BUILD_STRING="BUILD_STRING=${cur_rev}"
+    else
+        echo " No .revision found! "
+    fi
+    oe_runmake clean PLAT=${SOC_ATF}
+    oe_runmake ${BUILD_STRING} PLAT=${SOC_ATF} bl31
+
+    unset CROSS_COMPILE
+}
+
+do_install () {
+    install -d ${D}/boot
+    install -m 0644 ${S}/build/${SOC_ATF}/release/bl31.bin ${D}/boot/bl31-${SOC_ATF}.bin
+}
+
+do_deploy () {
+    install -d ${DEPLOYDIR}/${BOOT_TOOLS}
+    install -m 0644 ${S}/build/${SOC_ATF}/release/bl31.bin ${DEPLOYDIR}/${BOOT_TOOLS}/bl31-${SOC_ATF}.bin
+}
+
+addtask deploy before do_install after do_compile
+
+FILES_${PN} = "/boot"
+
+PACKAGE_ARCH = "${MACHINE_ARCH}"
+COMPATIBLE_MACHINE = "(mx8)"