installer scripts: cover case where U-Boot env does not exist

The U-Boot environment resides on a UBI volume. The uuu script
relies on the environment to save part of the commands that
U-Boot needs to execute after reboot in the middle of the
installation. If the UBI volume 'uboot_config' does not exist
the installer fails.

This commit:
- Creates a function -on the uuu script only- for obtaining
  the result of running any U-Boot command (0=success, 1=error).
- Checks the existance of 'uboot_config' volume.
- Runs 'ubivolscript' script to create the UBI volumes layout
  that generates the environment volume if it doesn't exist.
- Increases the timeout for running the 'ubivolscript' since
  there are occasions in which 'ubi part' (which is part of the
  script) takes more time (if it cannot find the fastmap).

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

meta-digi-arm/recipes-bsp/u-boot/u-boot-dey/ccmp1/install_linux_fw_sd.txt

@@ -119,6 +119,14 @@ if test $? -eq 1; then
 	exit;
 fi
 
+# Check if uboot_config volume exists (U-Boot env)
+ubi part UBI
+ubi check uboot_config
+if test $? -eq 1; then
+	# Create volumes layout (including U-Boot env)
+	run ubivolscript;
+fi
+
 # Set 'bootcmd' to the second part of the script that will
 #  - Reset environment to defaults
 #  - Restore 'dualboot' if previously set

meta-digi-arm/recipes-bsp/u-boot/u-boot-dey/ccmp1/install_linux_fw_usb.txt

@@ -119,6 +119,14 @@ if test $? -eq 1; then
 	exit;
 fi
 
+# Check if uboot_config volume exists (U-Boot env)
+ubi part UBI
+ubi check uboot_config
+if test $? -eq 1; then
+	# Create volumes layout (including U-Boot env)
+	run ubivolscript;
+fi
+
 # Set 'bootcmd' to the second part of the script that will
 #  - Reset environment to defaults
 #  - Restore 'dualboot' if previously set

meta-digi-arm/recipes-bsp/u-boot/u-boot-dey/ccmp1/install_linux_fw_uuu.sh

@@ -27,6 +27,12 @@ getenv()
 	uuu -v fb: ucmd printenv "${1}" | sed -ne "s,^${1}=,,g;T;p"
 }
 
+check_cmd()
+{
+	uuu -v fb: acmd ${1} > /dev/null 2> /dev/null
+	uuu -v fb: ucmd echo retval=\$? | sed  -ne "s,^retval=,,g;T;p"
+}
+
 show_usage()
 {
 	echo "Usage: $0 [options]"
@@ -93,6 +99,13 @@ if [ "${dualboot}" = "yes" ]; then
 	DUALBOOT=true;
 fi
 
+# Check if uboot_config volume exists (U-Boot env)
+uuu "fb[-t 15000]:" ucmd ubi part UBI
+check=$(check_cmd "ubi check uboot_config")
+if [ "${check}" = "1" ]; then
+	RUNVOLS=true
+fi
+
 # remove redirect
 uuu fb: ucmd setenv stdout serial
 
@@ -193,6 +206,11 @@ part_update "fsbl2" "${INSTALL_ATF_FILENAME}" 5000
 part_update "fip-a" "${INSTALL_FIP_FILENAME}" 5000
 part_update "fip-b" "${INSTALL_FIP_FILENAME}" 5000
 
+# Environment volume does not exist and needs to be created
+if [ "${RUNVOLS}" = true ]; then
+	# Create UBI volumes
+	uuu "fb[-t 45000]:" ucmd run ubivolscript
+fi
 
 # Set 'bootcmd' for the second part of the script that will
 #  - Reset environment to defaults
@@ -223,7 +241,7 @@ sleep 8
 uuu fb: ucmd setenv fastboot_buffer \${loadaddr}
 
 # Create UBI volumes
-uuu "fb[-t 20000]:" ucmd run ubivolscript
+uuu "fb[-t 45000]:" ucmd run ubivolscript
 
 if [ "${DUALBOOT}" = true ]; then
 	# Update Linux A