Difference between revisions of "Load custom bitstream"
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Reasons: | Reasons: | ||
| − | * Different banks have different (software | + | * 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 | ** voltages are set by the software through i2c | ||
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==Init== | ==Init== | ||
| − | * '''detect_sensors''' driver reads the device tree to get the default system configuration which gets later updated by '''autocampars''' | + | * '''detect_sensors''' driver reads the device tree to get the default system configuration which gets later updated by '''autocampars''' application |
* /etc/init.d/init_elphel393 | * /etc/init.d/init_elphel393 | ||
... | ... | ||
Latest revision as of 14:50, 20 April 2017
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
- Location on target system: /usr/local/verilog/
| name | project | description |
|---|---|---|
| x393_parallel.bit | x393 | for 5MPix sensor with parallel interface + SATA |
| x393_hispi.bit | x393 | for 14MPix sensor with serial interface + SATA |
| x393_sata.bit | x393_sata | SATA only |
| x359.bit | x359 | for external MUX 3-to-1 board |
Init
- detect_sensors driver reads the device tree to get the default system configuration which gets later updated by autocampars application
- /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)
autocampars
- project: elphel-apps-autocampars
- top script: autocampars.php
- Location on target system: /usr/bin/
- loads /usr/local/verilog/x359.bit to the external MUX board
- depending on configuration (determined in init_elphel393.py) calls /usr/bin/autocampars.py with arguments listed in the files in /usr/local/verilog. The default one is /usr/local/verilog/hargs:
-d TARGET_MODE=1 -f /usr/local/verilog/system_defines.vh -f /usr/local/verilog/x393_parameters.vh /usr/local/verilog/x393_cur_params_target.vh /usr/local/verilog/x393_localparams.vh -l /usr/local/verilog/x393_cur_params_target.vh -p PICKLE="/usr/local/verilog/x393_mcntrl.pickle -c bitstream_set_path /usr/local/verilog/x393_parallel.bit -c setupSensorsPower "PAR12" all 0 0.1 -c measure_all "*DI" -c setSensorClock 24.0 "2V5_LVDS" -c set_rtc
The file with arguments can be found in the fpga projects, example:
https://git.elphel.com/Elphel/x393/tree/master/py393
Location on target system: /usr/local/verilog/
sata
- project x393_sata
- Location on target system: /usr/local/verilog/
- /usr/local/bin/x393sata.py loads it default bitstream if fpga has not been programmed yet.
... DEFAULT_BITFILE="/usr/local/verilog/x393_sata.bit" ...
