Updated u-boot environment (variables bootcmd and fel_booted).

These changes are necessary to flash empty CHIPs with the latest u-boot.

Signed-off-by: Alex Kaplan <kaplan2539@gmail.com>

chip-fel-flash.sh

@@ -94,7 +94,8 @@ prepare_uboot_script() {
 
 	echo "nand write $UBOOT_MEM_ADDR 0x800000 $PADDED_UBOOT_SIZE" >> "${UBOOT_SCRIPT_SRC}"
 	echo "setenv bootargs root=ubi0:rootfs rootfstype=ubifs rw earlyprintk ubi.mtd=4" >> "${UBOOT_SCRIPT_SRC}"
-	echo "setenv bootcmd 'source \${scriptaddr}; nand slc-mode on; mtdparts; ubi part UBI; ubifsmount ubi0:rootfs; ubifsload \$fdt_addr_r /boot/sun5i-r8-chip.dtb; ubifsload \$kernel_addr_r /boot/zImage; bootz \$kernel_addr_r - \$fdt_addr_r'" >> "${UBOOT_SCRIPT_SRC}"
+	echo "setenv bootcmd 'if test -n \${fel_booted} && test -n \${scriptaddr}; then echo '(FEL boot)'; source \${scriptaddr}; fi; mtdparts; ubi part UBI; ubifsmount ubi0:rootfs; ubifsload \$fdt_addr_r /boot/sun5i-r8-chip.dtb; ubifsload \$kernel_addr_r /boot/zImage; bootz \$kernel_addr_r - \$fdt_addr_r'" >> "${UBOOT_SCRIPT_SRC}"
+  echo "setenv fel_booted 0" >> "${UBOOT_SCRIPT_SRC}"
 	echo "saveenv" >> "${UBOOT_SCRIPT_SRC}"
 
   if [[ "${METHOD}" == "fel" ]]; then