Flash QSPI firmware using U-Boot

How to flash the uboot, kernel and RootFS on qspi using u-boot commands

• Running TFTP-Server with the following files:
  • QSPI NOR image without rootf (uboot-*-qspi.img)
  • ubi partition for QSPI NOR (root.ubi)

1. boot from SD-Card or eMMC and interrupt the boot process in U-Boot
2. Configure the network in uboot:
   • ⇒ setenv autoload no
   • ⇒ setenv serverip <serverip> (TFTP Server adress, e.g.: setenv serverip 192.168.100.110)
   • ⇒ setenv ipaddr <ipaddr> (e.g.: setenv ipaddr 192.168.100.111)
   • ⇒ setenv netmask <netmask> (e.g.: setenv netmask 255.255.255.0)

1. Download boot loader image from tftp server

   => tftp $loadaddr uboot-*-qspi.img 

2. Initialize QSPI

   => sf probe 

3. Write boot laoder image to QSPI

   => sf update $loadaddr 0 $filesize

4. change the dip switch to boot from qspi

1. Download RootFS image from tftp server

   => tftp $loadaddr root.ubi

2. erase the qspi flash completely

   => sf erase RootFS 3800000

3. write downloaded image to qspi

   sf write ${loadaddr} RootFS ${filesize}