1. Speed up current boot loader by using eDMA to read QSPI dual-flash image into RAM. There is no OS or RTOS available to the boot loader. ie it is running bare-metal.
2. Know that I need to use RX Drain DMA trigger. Configuring DMA crossbar to assign slot 60 (RFDF) to eDMA channel 4 (so as to keep timer-triggered channels open for other DMA tasks).
3. I do not know how to configure TCD to fully automate the transfer. I presume the minor-loop will be either 16 or 32 32-bit words from RX Buffer to RAM via AHB access (?). I do not know how to auto-trigger a continuous read from QSPI flash devices into the RX Buffer.
4. SPI clk is 50MHZ, processor clk is 800MHz during boot.
Can anyone provide a (detailed) outline of how to setup the TCD/DMA controller and initiate the transfer from a QSPI Flash address to a DDR RAM address?
