Closed jeremyherbert closed 4 months ago
jeremyherbert
commented
1 year ago Hmm, I’m thinking this is because there is no openocd remote_bitbang command for a delay. The glasgow server is accepting packets as fast as possible, and so the delay in data packets is not transferred to the device due to the fact that the output data rate of the FPGA is slower than the input data rate from the USB interface.
jeremyherbert
commented
1 year ago Indeed, that appears to be the issue. Something like this appears to fix the problem: https://review.openocd.org/c/openocd/+/7472
Basically, it just adds two commands to delay either 1ms or 1us. If the patch is accepted, then it should be straightforward to add some delays to the JTAG applet I think.
whitequark
commented
1 year ago I wonder if maybe applying backpressure to the bitbang source is actually the correct approach here? Can we do this?
jeremyherbert
commented
1 year ago I thought about this (both with some sort of XON/XOFF and a ‘checkpoint’ handshake at points in SVF execution), but I can’t think of a good way to send the back pressure indication to openocd without increasing the complexity of the remote_bitbang protocol (which I don’t think will fly). As I understand it, the original intention for the protocol was for use with simulations, so they probably want to keep it as simple as possible.
Though, I think there is no reason that Glasgow needs to utilise the functionality in the linked patch - perhaps a different way would be more suitable given the extreme flexibility of the hardware. I mostly put the patch together to confirm that was indeed the problem, and also because I’d like to use it with another non-Glasgow device. For this applet, I think that maybe long term it would be better to use/create another adapter in openocd that also allows one to set the clock rate and maybe some other options - this could also include back pressure indication.
whitequark
commented
1 year ago LGTM on adding support for this specific interface to jtag-openocd.
whitequark
commented
1 year ago The upstream continues being unresponsive for seemingly no reason. :(
whitequark
commented
11 months ago This has now been merged upstream: https://review.openocd.org/c/openocd/+/7472
jeremyherbert
commented
7 months ago whitequark
commented
4 months ago @jeremyherbert I think this should be fixed now--could you retest please?
jeremyherbert
commented
4 months ago I tried running the following command with the SVF file in the original post:
glasgow run jtag-svf -V 3.3 --port A --pin-tck 0 --pin-tms 3 --pin-tdi 2 --pin-tdo 1 blink.svfBut I receive the error:
I: g.device.hardware: device already has bitstream ID 62239ba31f7697d2809a2646248c966a
I: g.cli: running handler for applet 'jtag-svf'
I: g.applet.interface.jtag_svf: port(s) A voltage set to 3.3 V
Traceback (most recent call last):
File "/home/jeremy/.local/bin/glasgow", line 8, in <module>
sys.exit(run_main())
File "/home/jeremy/Downloads/glasgow/software/glasgow/cli.py", line 939, in run_main
exit(asyncio.new_event_loop().run_until_complete(main()))
File "/usr/lib/python3.10/asyncio/base_events.py", line 649, in run_until_complete
return future.result()
File "/home/jeremy/Downloads/glasgow/software/glasgow/cli.py", line 707, in main
return applet_task.result()
File "/home/jeremy/Downloads/glasgow/software/glasgow/cli.py", line 656, in run_applet
return await applet.interact(device, args, iface)
File "/home/jeremy/Downloads/glasgow/software/glasgow/applet/interface/jtag_svf/__init__.py", line 294, in interact
await coro
File "/home/jeremy/Downloads/glasgow/software/glasgow/applet/interface/jtag_svf/__init__.py", line 120, in svf_state
path = {
KeyError: (<JTAGState.UNKNOWN: 'Unknown'>, <JTAGState.IDLE: 'Run-Test/Idle'>)I also tried with a freshly compiled openocd and the openocd config file above:
Open On-Chip Debugger 0.12.0+dev-00634-g23c33e1d3 (2024-07-02-17:11)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "jtag". To override use 'transport select <transport>'.
Info : Initializing remote_bitbang driver
Info : Connecting to localhost:33333
Info : remote_bitbang driver initialized
Info : Note: The adapter "remote_bitbang" doesn't support configurable speed
Info : JTAG tap: ecp5.tap tap/device found: 0x41111043 (mfg: 0x021 (Lattice Semi.), part: 0x1111, ver: 0x4)
Warn : JTAG tap: ecp5.tap UNEXPECTED: 0x41111043 (mfg: 0x021 (Lattice Semi.), part: 0x1111, ver: 0x4)
Error: JTAG tap: ecp5.tap expected 1 of 1: 0x21111043 (mfg: 0x021 (Lattice Semi.), part: 0x1111, ver: 0x2)
Error: Trying to use configured scan chain anyway...
Warn : Bypassing JTAG setup events due to errors
Warn : gdb services need one or more targets defined
svf processing file: "blink.svf"
0% HDR 0;
(Above Padding command skipped, as per -tap argument)
0% HIR 0;
(Above Padding command skipped, as per -tap argument)
0% TDR 0;
(Above Padding command skipped, as per -tap argument)
0% TIR 0;
(Above Padding command skipped, as per -tap argument)
0% ENDDR DRPAUSE;
0% ENDIR IRPAUSE;
0% STATE IDLE;
0% SIR 8 TDI (E0);
0% MASK (FFFFFFFF);
0% SIR 8 TDI (1C);
0% FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
0% SIR 8 TDI (C6);
0% SDR 8 TDI (00);
0% RUNTEST IDLE 2 TCK 1.00E-02 SEC;
0% SIR 8 TDI (0E);
0% SDR 8 TDI (01);
0% RUNTEST IDLE 2 TCK 1.00E-02 SEC;
0% SIR 8 TDI (3C);
0% MASK (0000B000);
0% SIR 8 TDI (46);
0% SDR 8 TDI (01);
0% RUNTEST IDLE 2 TCK 1.00E-02 SEC;
0% SIR 8 TDI (7A);
0% RUNTEST IDLE 2 TCK 1.00E-02 SEC;
0% 0000DCFFFFFFFFCDBDFFFFFF006CAC4C82E24282C21CB4624C8CB4AAACA26232045C2E4E860A00FF);
0% 00FF173300000000000000000000FF173300000000000000000000FF173300000000000000000000);
0% FF173300000000000000000000FF173300000000000000000000FF173300000000000000000000FF);
5% 173300000000000000000000FF173300000000000000000000FF173300000000000000000000FF17);
5% 000000000000000000FF173300000000000000000000FF173300000000000000000000FF17330000);
5% 0000000000000000FF173300000000000000000000FF173300000000000000000000FF1733000000);
5% 000000000000FF173300000000000000000000FF173300000000000000000000FF17330000000000);
5% 00000000FF173300000000000000000000FF173300000000000000000000FF173300000000000000);
10% 000000FF173300000000000000000000FF173300000000000000000000FF17330000000000000000);
10% 00FF173300000000000000000000FF173300000000000000000000FF173300000000000000000000);
10% 173300000000000000000000FF173300000000000000000000FF173300000000000000000000FF17);
10% 3300000000000000000000FF173300000000000000000000FF173300000000000000000000FF1733);
10% 00000000000000000000FF173300000000000000000000FF173300000000000000000000FF173300);
15% 0000000000000000FF173300000000000000000000FF173300000000000000000000FF1733000000);
15% 000000000000FF173300000000000000000000FF173300000000000000000000FF17330000000000);
15% 0000000000FF173300000000000000000000FF173300000000000000000000FF1733000000000000);
15% 000000FF173300000000000000000000FF173300000000000000000000FF17330000000000000000);
15% 00FF173300000000000000000000FF173300000000000000000000FF173300000000000000000000);
20% 173300000000000000000000FF173300000000000000000000FF173300000000000000000000FF17);
20% 3300000000000000000000FF173300000000000000000000FF173300000000000000000000FF1733);
20% 000000000000000000FF173300000000000000000000FF173300000000000000000000FF17330000);
20% 00000000000000FF173300000000000000000000FF173300000000000000000000FF173300000000);
20% 000000000000FF173300000000000000000000FF173300000000000000000000FF17330000000000);
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25% 000000FF173300000000000000000000FF173300000000000000000000FF17330000000000000000);
25% 00FF173300000000000000000000FF173300000000000000000000FF173300000000000000000000);
25% 0000000000000000FF173300000000000000000000FFF4220000000000000000000A40FF17330000);
25% 0000FF173300000000000000000000FF173300000000000000000000FF1733000000000000000000);
25% 00000000000000FF173300000000000000000000FF173300000000000000000000FF173300000000);
30% 173300000000000000000000FFD5360080000000000000000000FF173300000000000000000000FF);
30% 000000000000FFF4220000000000000000000A40FF173300000000000000000000FF173300000000);
30% 00000000000000000000FF173300000000000000000000FF173300000000000000000000FF173300);
30% 00000000FF173300000000000000000000FF173300000000000000000000FF173300000000000000);
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35% 000000000000FFF4220000000000000000000A40FFF4220000000000000000000A40FFF422000000);
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40% 0000000000000000FF173300000000000000000000FF173300000000000000000000FF1733000000);
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40% 00000000000000FF173300000000000000000000FF173300000000000000000000FF173300000000);
40% 00000000000000000000FF173300000000000000000000FF173300000000000000000000FF173300);
40% 0000000000000000FF173300000000000000000000FF173300000000000000000000FF1733000000);
45% 00000000000000FF173300000000000000000000FF173300000000000000000000FF173300000000);
45% 00000000FF173300000000000000000000FF173300000000000000000000FF173300000000000000);
45% 173300000000000000000000FF173300000000000000000000FF173300000000000000000000FF17);
45% 0000000000000000FF173300000000000000000000FFD5360080000000000000000000FF17330000);
45% 00000000FF173300000000000000000000FF173300000000000000000000FF173300000000000000);
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50% 00FF173300000000000000000000FF173300000000000000000000FF173300000000000000000000);
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50% 3300000000000000000000FF173300000000000000000000FF173300000000000000000000FF1733);
50% 000000000000000000FF173300000000000000000000FF173300000000000000000000FF17330000);
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65% 00000000000000000000FF173300000000000000000000FF173300000000000000000000FF173300);
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90% 10000000000000000000FF170F0720000000000000000000FF170F0720000000000000000000FFD5);
90% 000000000000FF3F8700578200000000000000000A40FF173300000000000000000000FFECC001CF);
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90% 01CEA0000000000000000000FFFB6B005410000000000000000000FFD55A00100000000000000000);
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95% 00FF173300000000000000000000FF173300000000000000000000FF173300000000000000000000);
95% 000000000000FF173300000000000000000000FF173300000000000000000000FF17330000000000);
95% SIR 8 TDI (FF);
95% RUNTEST IDLE 100 TCK 1.00E-02 SEC;
95% SIR 8 TDI (C0);
95% RUNTEST IDLE 2 TCK 1.00E-03 SEC;
95% MASK (FFFFFFFF);
95% SIR 8 TDI (26);
95% RUNTEST IDLE 2 TCK 2.00E-01 SEC;
95% SIR 8 TDI (FF);
95% RUNTEST IDLE 2 TCK 1.00E-03 SEC;
95% SIR 8 TDI (3C);
95% MASK (00002100);
Error: tdo check error at line 11
Error: READ = 0x41111043
Error: WANT = 0x21111043
Error: MASK = 0xffffffff
Time used: 0m16s208ms
svf file programmed failed
Info : remote_bitbang interface quitI: g.device.hardware: generating bitstream ID f4351d43ebcc1e42ec5196bfddf74d47
I: g.cli: running handler for applet 'jtag-openocd'
I: g.applet.interface.jtag_openocd: port(s) A voltage set to 3.3 V
I: g.applet.interface.jtag_openocd: socket: listening at tcp:localhost:33333
I: g.applet.interface.jtag_openocd: socket: new connection from [127.0.0.1]:53502
I: g.applet.interface.jtag_openocd: socket: connection from [127.0.0.1]:53502 lost
^CE: asyncio: Task exception was never retrieved
future: <Task finished name='Task-22' coro=<JTAGOpenOCDApplet.interact.<locals>.forward_in() done, defined at /home/jeremy/Downloads/glasgow/software/glasgow/applet/interface/jtag_openocd/__init__.py:164> exception=ValueError('Set of coroutines/Futures is empty.')>
Traceback (most recent call last):
File "/home/jeremy/Downloads/glasgow/software/glasgow/applet/interface/jtag_openocd/__init__.py", line 167, in forward_in
data = await iface.read()
File "/home/jeremy/Downloads/glasgow/software/glasgow/access/direct/demultiplexer.py", line 240, in read
await self._in_tasks.wait_one()
File "/home/jeremy/Downloads/glasgow/software/glasgow/support/task_queue.py", line 81, in wait_one
await asyncio.wait(self._live, return_when=asyncio.FIRST_COMPLETED)
File "/usr/lib/python3.10/asyncio/tasks.py", line 368, in wait
raise ValueError('Set of coroutines/Futures is empty.')
ValueError: Set of coroutines/Futures is empty.
E: asyncio: Task was destroyed but it is pending!
task: <Task pending name='Task-21' coro=<JTAGOpenOCDApplet.interact.<locals>.forward_out() running at /home/jeremy/Downloads/glasgow/software/glasgow/applet/interface/jtag_openocd/__init__.py:159> wait_for=<Future pending cb=[Task.task_wakeup()]>>Probe does work though:
glasgow run jtag-probe -V 3.3 --port A --pin-tck 0 --pin-tms 3 --pin-tdi 2 --pin-tdo 1 scan
I: g.device.hardware: device already has bitstream ID 62239ba31f7697d2809a2646248c966a
I: g.cli: running handler for applet 'jtag-probe'
I: g.applet.interface.jtag_probe: port(s) A voltage set to 3.3 V
I: g.applet.interface.jtag_probe: shifted 32-bit DR=<11000010000010001000100010000010>
I: g.applet.interface.jtag_probe: shifted 8-bit IR=<10000000>
I: g.applet.interface.jtag_probe: discovered 1 TAPs
I: g.applet.interface.jtag_probe: TAP #0: IR[8] IDCODE=0x41111043
I: g.applet.interface.jtag_probe: manufacturer=0x021 (Lattice Semi.) part=0x1111 version=0x4I am using the version 0.1.dev2093+g00ad180 with amaranth 0.5.0.
whitequark
commented
4 months ago @wanda-phi That sounds related to your changes, can you take a look?
jeremyherbert
commented
4 months ago A small update - the openocd error was caused by me using an ECP5 25F to test rather than an ECP5 12F. Sorry, was just in a bit of a rush.
Here is what a 12F looks like (working):
$ glasgow run jtag-openocd -V 3.3 --port A --pin-tck 0 --pin-tms 3 --pin-tdi 2 --pin-tdo 1 tcp:localhost:33333
I: g.device.hardware: generating bitstream ID f4351d43ebcc1e42ec5196bfddf74d47
I: g.cli: running handler for applet 'jtag-openocd'
I: g.applet.interface.jtag_openocd: port(s) A voltage set to 3.3 V
I: g.applet.interface.jtag_openocd: socket: listening at tcp:localhost:33333
I: g.applet.interface.jtag_openocd: socket: new connection from [127.0.0.1]:59722
I: g.applet.interface.jtag_openocd: socket: connection from [127.0.0.1]:59722 lost$ openocd -f flash.ocd
Open On-Chip Debugger 0.12.0+dev-00634-g23c33e1d3 (2024-07-02-17:11)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "jtag". To override use 'transport select <transport>'.
Info : Initializing remote_bitbang driver
Info : Connecting to localhost:33333
Info : remote_bitbang driver initialized
Info : Note: The adapter "remote_bitbang" doesn't support configurable speed
Info : JTAG tap: ecp5.tap tap/device found: 0x21111043 (mfg: 0x021 (Lattice Semi.), part: 0x1111, ver: 0x2)
Warn : gdb services need one or more targets defined
svf processing file: "blink.svf"
0% HDR 0;
(Above Padding command skipped, as per -tap argument)
0% HIR 0;
(Above Padding command skipped, as per -tap argument)
0% TDR 0;
(Above Padding command skipped, as per -tap argument)
0% TIR 0;
(Above Padding command skipped, as per -tap argument)
0% ENDDR DRPAUSE;
0% ENDIR IRPAUSE;
0% STATE IDLE;
0% SIR 8 TDI (E0);
0% MASK (FFFFFFFF);
0% SIR 8 TDI (1C);
0% FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
0% SIR 8 TDI (C6);
0% SDR 8 TDI (00);
0% RUNTEST IDLE 2 TCK 1.00E-02 SEC;
0% SIR 8 TDI (0E);
0% SDR 8 TDI (01);
0% RUNTEST IDLE 2 TCK 1.00E-02 SEC;
0% SIR 8 TDI (3C);
0% MASK (0000B000);
0% SIR 8 TDI (46);
0% SDR 8 TDI (01);
0% RUNTEST IDLE 2 TCK 1.00E-02 SEC;
0% SIR 8 TDI (7A);
0% RUNTEST IDLE 2 TCK 1.00E-02 SEC;
0% 0000DCFFFFFFFFCDBDFFFFFF006CAC4C82E24282C21CB4624C8CB4AAACA26232045C2E4E860A00FF);
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0% FF173300000000000000000000FF173300000000000000000000FF173300000000000000000000FF);
5% 173300000000000000000000FF173300000000000000000000FF173300000000000000000000FF17);
5% 000000000000000000FF173300000000000000000000FF173300000000000000000000FF17330000);
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90% 000000000000FF3F8700578200000000000000000A40FF173300000000000000000000FFECC001CF);
90% 0000000000FF3B1E00E410000000000000000000FF173300000000000000000000FF3B1E00E41000);
90% FFD55A0010000000000000000000FF173300000000000000000000FF173300000000000000000000);
90% 01CEA0000000000000000000FFFB6B005410000000000000000000FFD55A00100000000000000000);
95% 0000000000FF173300000000000000000000FF173300000000000000000000FF1733000000000000);
95% 0000000000FF173300000000000000000000FF173300000000000000000000FF1733000000000000);
95% 00000000FF173300000000000000000000FF173300000000000000000000FF173300000000000000);
95% 00FF173300000000000000000000FF173300000000000000000000FF173300000000000000000000);
95% 000000000000FF173300000000000000000000FF173300000000000000000000FF17330000000000);
95% SIR 8 TDI (FF);
95% RUNTEST IDLE 100 TCK 1.00E-02 SEC;
95% SIR 8 TDI (C0);
95% RUNTEST IDLE 2 TCK 1.00E-03 SEC;
95% MASK (FFFFFFFF);
95% SIR 8 TDI (26);
95% RUNTEST IDLE 2 TCK 2.00E-01 SEC;
95% SIR 8 TDI (FF);
95% RUNTEST IDLE 2 TCK 1.00E-03 SEC;
95% SIR 8 TDI (3C);
95% MASK (00002100);
shutdown command invoked
Info : remote_bitbang interface quitUnfortunately the jtag-svf applet still gives the same error:
$ glasgow run jtag-svf -V 3.3 --port A --pin-tck 0 --pin-tms 3 --pin-tdi 2 --pin-tdo 1 blink.svf
I: g.device.hardware: generating bitstream ID 62239ba31f7697d2809a2646248c966a
I: g.cli: running handler for applet 'jtag-svf'
I: g.applet.interface.jtag_svf: port(s) A voltage set to 3.3 V
Traceback (most recent call last):
File "/home/jeremy/.local/bin/glasgow", line 8, in <module>
sys.exit(run_main())
File "/home/jeremy/Downloads/glasgow/software/glasgow/cli.py", line 939, in run_main
exit(asyncio.new_event_loop().run_until_complete(main()))
File "/usr/lib/python3.10/asyncio/base_events.py", line 649, in run_until_complete
return future.result()
File "/home/jeremy/Downloads/glasgow/software/glasgow/cli.py", line 707, in main
return applet_task.result()
File "/home/jeremy/Downloads/glasgow/software/glasgow/cli.py", line 656, in run_applet
return await applet.interact(device, args, iface)
File "/home/jeremy/Downloads/glasgow/software/glasgow/applet/interface/jtag_svf/__init__.py", line 294, in interact
await coro
File "/home/jeremy/Downloads/glasgow/software/glasgow/applet/interface/jtag_svf/__init__.py", line 120, in svf_state
path = {
KeyError: (<JTAGState.UNKNOWN: 'Unknown'>, <JTAGState.IDLE: 'Run-Test/Idle'>)
wanda-phi
commented
4 months ago Indeed, that is my bug. Could you test if #615 fixes it?
jeremyherbert
commented
4 months ago Works great now! Thanks for the fix. Please feel to close this as necessary @whitequark
Apologies in advance if this is an upstream bug in openocd or ecppack.
I have an SVF file which is just a blinky for an ECP5 (LFE5U-12F) FPGA built with ecppack. If I use the
jtag-svfapplet, it loads on the FPGA fine:However, if I try to use the
jtag-openocdapplet with the following configuration file:the FPGA does actually load the bitstream and start running (I can see the blinking LEDs), but openocd throws an error:
Presumably there isn't anything wrong with the SVF file because the
jtag-svfapplet works fine - unless there are some SVF lines that are skipped in thejtag-svfapplet.blink.svf.txt (.txt extension added to allow it to be uploaded)