Updating SPL and U-Boot of SD Card and eMMC

To update SPL and U-Boot of SD Card and eMMC, perform the following steps:

1. Transfer the latest U-Boot-spl.bin.normal.out and visionfive2_fw_payload.img files into Debian OS through SCP.

2. Update SPL.

   dd if=u-boot-spl.bin.normal.out of=/dev/mmcblk<X>p1 conv=fsync

3. Update U-Boot.

   dd if=visionfive2_fw_payload.img of=/dev/mmcblk<X>p2 conv=fsync

   Tip: <X>: The application value is 0 or 1. 1 for SD card and 0 for eMMC.
   Example command and output:

   root@starfive:~# dd if=u-boot-spl.bin.normal.out of=/dev/mmcblk1p1 conv=fsync
   255+1 records in
   255+1 records out
   130688 bytes (131 kB, 128 KiB) copied, 0.033136 s, 3.9 MB/s
   
   root@starfive:~# dd if=visionfive2_fw_payload.img of=/dev/mmcblk1p2 conv=fsync
   5469+1 records in
   5469+1 records out
   2800501 bytes (2.8 MB, 2.7 MiB) copied, 0.619333 s, 4.5 MB/s

4. Restart the system to make the updates take effect.