Created
January 2, 2023 00:12
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OpenOCD configuration that resets and halts Vortex86SX
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| noinit | |
| adapter driver usb_blaster | |
| usb_blaster_lowlevel_driver ftdi | |
| verify_jtag disable | |
| verify_ircapture disable | |
| adapter srst delay 100 | |
| reset_config srst_only srst_gates_jtag separate | |
| adapter speed 400 | |
| set _CHIPNAME vortex | |
| jtag newtap $_CHIPNAME cpu -irlen 9 -ircapture 0x2 -irmask 0xff -ignore-version -enable | |
| set _TARGETNAME $_CHIPNAME.cpu | |
| target create $_TARGETNAME testee -chain-position $_CHIPNAME.cpu | |
| set _JTAGSPI_IR 0x02 | |
| set _FLASHNAME $_CHIPNAME.flash | |
| flash bank $_FLASHNAME jtagspi 0 0 0 0 $_TARGETNAME $_JTAGSPI_IR | |
| init | |
| pathmove RESET RUN/IDLE | |
| pathmove RESET RUN/IDLE | |
| pathmove RESET RUN/IDLE | |
| irscan $_TARGETNAME 0x1 | |
| irscan $_TARGETNAME 0x1 | |
| irscan $_TARGETNAME 0xf | |
| drscan $_TARGETNAME 17 0 | |
| #reset halt | |
| #wait_halt 1000 |
I've tried to connect my Vortex86SX board with JTAG and FT232H adapter to OpenOCD in order to learn how to read/flash BIOS. But didn't know that it could be so hard. Surprisingly, I've already learn how to do that!
@matwey you can use https://archive.org/details/vortex86-jflash and a parallel cable, as this is a work-in-progress.
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See https://github.com/yottatsa/openocd