emard
commented
2 years ago model=ulx4m DEVICE=um-85k: this must be used for bootloader to jump to user bitstream without this, even normal programming will fail if bootloader is loaded. this can also be used to apply non-serdes bootloader bitstream to serdes 85F chip --input-idcode 0x01113043 \ --output-idcode 0x01113043 \
$(BUILD_TMP)/multiboot.img: $(BUILD_TMP)/$(PROJ).bit build-tmp/passthru.bit ecpmulti --input $(BUILD_TMP)/$(PROJ).bit \ --input-idcode 0x01113043 \ --output-idcode 0x01113043 \ --address $(USER_BITSTREAM_ADDR) --input build-tmp/passthru.bit \ --flashsize 128 \ --output $@
goran-mahovlic
I compiled multiboot DFU loader and if holding BTN1 and plugging USB, it enumerates as DFU device
It accepts flashing some bitstream but then user bitstream doesn't work assign led = 4'b0101; // and all LEDs off
multiboot bitstream itself uses those LEDs but when control is passed to user bitstream, then LEDs doesn't work
Content of user bitstream area is ok I uploaded as dfu-utill -a0 -D bitstream.bit and then downloaded as dfu-util -a0 -D readback.raw
comparing bitstream.bit and readback.raw have the same content, only readback is longer than bitstream.bit as it runs until end of flash
after this I can't even upload anything temporary with fujprog, this happens: fujprog build-tmp/passthru.bit ULX2S / ULX3S JTAG programmer v4.8 (git cc3ea93 built May 23 2021 17:03:05) Copyright (C) Marko Zec, EMARD, gojimmypi, kost and contributors Using USB cable: ULX3S FPGA 85K v3.0.8 Programming: 96% | Received and expected data do not match! TDO: 00000000 Expected: 00000100 mask: 00002100 Line 5706: Operation not permitted
Failed.
still it seems that I can flash DFU again with openFPGABootloader or with DFU itself by holding both BTN1 and BTN2 while powering up
make flash_ofl make flash_dfu