Amazing Khadas, always amazes you!
This document mainly introduces the method of clearing eMMC. You will learn about 3 methods to clear eMMC.
The operation of VIM1, VIM2 and VIM3 is almost the same, so this document will take VIM3L as an example.
store erase booton the terminal of u-boot, and wait for the erasure process to complete.
kvim3l# store erase boot emmckey_is_protected(): protect start = 0,end = 8191 do_store_erase() 989 do_store_erase() 992, i = 0 mmc switch to boot0 success emmckey_is_protected(): protect blkcnt = 8192 start = 0,end = 8191 start = 0,end = 8191 do_store_erase() 992, i = 1 mmc switch to boot1 success emmckey_is_protected(): protect blkcnt = 8192 start = 0,end = 8191 start = 0,end = 8191 mmc switch to user success
This approach is suitable for all products that use the Amlogic SoC:
This approach is suitable for a VIM that has Linux installed:
Power on and boot up.
Open a terminal, and run
dd to fill your bootloader partition with zeros:
root@Khadas:~# dd if=/dev/zero of=/dev/bootloader dd: writing to '/dev/bootloader': No space left on device 8193+0 records in 8192+0 records out 4194304 bytes (4.2 MB, 4.0 MiB) copied, 1.1226 s, 3.7 MB/s root@Khadas:~# reboot