add scripts for bootstrapping sama5d27

sama5d27-som1-ek-sd-envsetup.sh

@@ -0,0 +1,45 @@
+export MACHINE=sama5d27-som1-ek-sd
+
+. envsetup.sh
+
+yoe_sam_build_bootstrap_tools() {
+  bitbake sam-ba
+  bitbake at91bootstrap-sam-ba
+}
+
+SAMBA=${OE_BASE}/build/tmp/sysroots-components/x86_64/sam-ba-native/usr/bin/sam-ba_cdc_linux/sam-ba
+BOOT=${OE_DEPLOY_DIR}/at91bootstrap-sama5d27_som1_ek.bin-sam-ba
+UBOOT=${OE_DEPLOY_DIR}/u-boot.bin
+
+yoe_sam_load_uboot_via_samba() {
+  echo "lowlevel"
+  ${SAMBA} -p serial:ttyACM0 -b sama5d27-som1-ek -t 5 -a lowlevel || exit 1
+  echo "extram"
+  ${SAMBA} -p serial:ttyACM0 -b sama5d27-som1-ek -t 5 -a extram || exit 1
+  echo "download bootstrap"
+  ${SAMBA} -p serial:ttyACM0 -b sama5d27-som1-ek -m write:${BOOT}:0x200000 || exit 1
+  echo "download u-boot"
+  ${SAMBA} -p serial:ttyACM0 -b sama5d27-som1-ek -m write:${UBOOT}:0x23F00000 || exit 1
+  echo "jump to bootstrap"
+  ${SAMBA} -p serial:ttyACM0 -b sama5d27-som1-ek -m execute:0x200000 || exit 1
+  screen /dev/ttyACM0 115200
+}
+
+yoe_sam_install_bootstrap_files() {
+  # this assumes you have bootstrapped the system over serial
+  # using the above script.
+
+  if [ -z "$1" ]; then
+    echo
+    echo "Usage: is_install_bootstrap_files <install dir>"
+    echo
+    return 1
+  fi
+
+  IMG_VERSION=$(yoe_get_image_version)
+  echo IMG_VERSION=$IMG_VERSION
+
+  cp ${OE_DEPLOY_DIR}/zImage-initramfs-${MACHINE}.bin $1/zImage
+  cp ${OE_DEPLOY_DIR}/at91-sama5d27_som1_ek.dtb $1
+  cp ${OE_BASE}/images/${MACHINE}_${IMG_VERSION}.upd $1
+}