Convert eMMC to pSLC

To ease converting the userspace of the eMMC to pSLC, TQ Systems has extended the functionality of U-Boot.

Please Note:
The following instructions have been tested on the

TQMa6x BSP REV.113
TQMa7x BSP REV.105
TQMa6ULx BSP REV.104
TQMLS102xA BSP REV.109

The hardware partitioning of the eMMC is a one-time, non-reversible action.A all data on the eMMC gets lost when converting.

Converting eMMC to pSLC:

Set Starterkit to boot from eMMC please see the appropriate wiki page how to set the DIP switches:
TQMa6x
TQMa7x
TQMa6ULx
TQMLS102xA
Interrupt Boot process in U-Boot
Determine the maximum 512-byte blocks usable for hardware partitioning:

mmc rescan
mmc maxhwpartsectors

Example

=> mmc rescan
=> mmc maxhwpartsectors
maxhwpartsectors: 6d4000
=>

Check Partition configuration:

mmc hwpartition user enh 0 0x${maxhwpartsectors} wrrel on check

Example

=> mmc hwpartition user enh 0 0x${maxhwpartsectors} wrrel on check
Partition configuration:
        User Enhanced Start: 0 Bytes
        User Enhanced Size: 3.4 GiB
        User partition write reliability: on
        No GP1 partition
        No GP2 partition
        No GP3 partition
        No GP4 partition
=>

Convert eMMC to pSLC:

mmc hwpartition user enh 0 0x${maxhwpartsectors} wrrel on complete

After power cycle, settings will be applied