This is a SPI hardware interface with a display (https://spidriver.com/),
connected as an FT230X USB serial device at a fixed baud rate of 460800.
Firmware: https://github.com/jamesbowman/spidriver
Protocol: https://github.com/jamesbowman/spidriver/blob/master/protocol.md
Most of the implementation is copied from the Bus Pirate programmer.
Tested with a SPIDriver v2 by reading FM25Q128A flash memory on Linux.
Change-Id: I07b23c1146d4ad3606b54a1e8dc8030cf4ebf57b
Signed-off-by: Simon Arlott <flashrom@octiron.net>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/86411
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Peter Marheine <pmarheine@chromium.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
