Load custom bitstream

Description

The default bitstream is loaded from OS not from u-boot. Reasons:

• Different banks have different (software - controlled and regulated) voltages and they need to be set up before loading.
  • voltages are set by the software through i2c

Bitstreams paths

• /usr/local/verilog/

name	description
x393_parallel.bit	for 5MPix sensor with parallel interface + SATA
x393_hispi.bit	for 14MPix sensor with serial interface + SATA
x393_sata.bit	SATA only
x359.bit	for external MUX 3-to-1 board

Init

• /etc/init.d/init_elphel393

...
$CONFDIR/init_elphel393.py "{\"usb_hub\":1, \"ip\":1,\"imgsrv\":1, \"autoexp_daemon\":1, \"autocampars\":1, \"sata\":1, \"gps\":1, \"eyesis\":0 }"
...

• • in this line the extra init procedures are listed, to disable/skip certain procedure set 0, to enable - set 1
  • everything is done in /etc/elphel393/init_elphel393.py which runs other scripts.
  • the bitstream is loaded by autocampars or sata (if autocampars is skipped)