ccimx95: bootscript: add bootscript for ConnectCore 95

Add a bootscript for the ConnectCore 95 platform, including the default device
tree overlay names.

Signed-off-by: Arturo Buzarra <arturo.buzarra@digi.com>

meta-digi-arm/recipes-bsp/u-boot/u-boot-dey/ccimx95/boot.txt

@@ -0,0 +1,92 @@
+#
+# U-Boot bootscript for EMMC/SD images created by Yocto.
+#
+
+# As the first step in the boot script, check if we are using DualBoot. This
+# requires the script to change some variables and save them, while the rest
+# of the script changes variables only temporarily without saving them.
+
+# Build boot attempt message string
+if test "${bootlimit}" -gt 0 && test "${bootcount}" -gt 0; then
+	bootattempt="(boot attempt ${bootcount}/${bootlimit})"
+fi
+
+# Pre step: check if we boot from uSD.
+if test "${mmcbootdev}" = "1"; then
+	# We are booting from the SD card.
+	setenv mmcroot /dev/mmcblk${mmcbootdev}p2
+elif test "${dualboot}" = "yes"; then
+	if test "${active_system}" = "linux_a"; then
+		echo "Booting from system A ${bootattempt}"
+		part number mmc ${mmcbootdev} linux_a tmp_mmcpart
+		part number mmc ${mmcbootdev} rootfs_a tmp_rootfs_index
+	else
+		echo "Booting from system B ${bootattempt}"
+		part number mmc ${mmcbootdev} linux_b tmp_mmcpart
+		part number mmc ${mmcbootdev} rootfs_b tmp_rootfs_index
+	fi
+	part uuid mmc ${mmcbootdev}:${tmp_rootfs_index} tmp_mmcroot
+	if test "${mmcpart}" -ne "${tmp_mmcpart}"; then
+		setexpr mmcpart ${tmp_mmcpart}
+		env_save_needed="1"
+	fi
+	if test "${mmcroot}" != "PARTUUID=${tmp_mmcroot}"; then
+		setenv mmcroot PARTUUID=${tmp_mmcroot}
+		env_save_needed="1"
+	fi
+	if test "${env_save_needed}" = "1"; then
+		env delete tmp_mmcpart tmp_rootfs_index tmp_mmcroot
+		env save
+	fi
+else
+	echo "Booting system ${bootattempt}"
+	# Get the UUID of the configured boot partition.
+	part uuid mmc ${mmcbootdev}:${mmcpart} bootpart
+	# Check the boot source.
+	if test "${bootpart}" = "${part1_uuid}"; then
+		# We are booting from the eMMC using 'linux'.
+		true
+	elif test "${bootpart}" = "${part2_uuid}"; then
+		# We are booting from the eMMC using 'recovery'.
+		setenv boot_initrd true
+		setenv initrd_file uramdisk-recovery.img
+	fi
+fi
+
+# Back up environment variables
+setenv ORIG_overlays ${overlays}
+
+#
+# Determine overlays to apply depending on the hardware capabilities
+# described by the HWID, SOM version, and carrier board version.
+#
+setexpr module_has_wifi ${hwid_2} \& 20000
+setexpr module_has_wifi ${module_has_wifi} / 20000
+setexpr module_has_bt ${hwid_2} \& 40000
+setexpr module_has_bt ${module_has_bt} / 40000
+
+if test "${module_has_bt}" = "1" && test -z "${disable_bt}"; then
+	setenv overlays ccimx95_bt.dtbo,${overlays}
+fi
+
+if test "${module_has_wifi}" = "1" && test -z "${disable_wifi}"; then
+	setenv overlays ccimx95_wifi.dtbo,${overlays}
+fi
+
+if test -z "${disable_npu}"; then
+	setenv overlays ccimx95_npu.dtbo,${overlays}
+fi
+
+if test "${dboot_kernel_var}" = "fitimage" && test -z "${temp-fitimg-loaded}"; then
+	# Set temp var to avoid re-loading fitimage
+	setenv temp-fitimg-loaded yes
+fi
+dboot linux mmc ${mmcbootdev}:${mmcpart}
+
+#
+# Undo changes to environment variables
+#
+# (we only get here in case of an error on the dboot command)
+#
+setenv overlays ${ORIG_overlays}
+setenv ORIG_overlays