Did I understand the flashing sequence properly over serial port for a bare board?
1) Boot through RBL; that initializes the IRAM.
2) Load UBL (or SPL) with the slh_OMAP-L138.exe mono tool. That initializes the DDR.
3) Load u-boot. That initializes the flash and other peripherals properly.
4) Flash u-boot through u-boot.
This would need to be done with an AIS wrapper since that is the protocol for the RBL that it understands.
If it is too complicated, is it possible to flash u-boot directly to the NOR flash by the sfh_OMAP-L138.exe tool? That is, without going through this flash sequence rather than just flashing directly?
I was trying to read the sprab41d.pdf material, but it does not look all that clear to me, unfortunately.
Thank you in advance.