make: Leaving directory '/home/keeran/linux-on-litex-vexriscv/build/nexys4ddr/software/bios'
build/nexys4ddr/nexys4ddr.dts:63.45-68.19: Warning (simple_bus_reg): /soc/interrupt-controller: missing or empty reg/ranges property
build/nexys4ddr/nexys4ddr.dts:99.36-107.19: Warning (simple_bus_reg): /soc/mmc@f0006000: simple-bus unit address format error, expected "f0005800"
 CC       isr.o
 CC       main.o
 LD       emulator.elf
chmod -x emulator.elf
 OBJCOPY  emulator.bin
chmod -x emulator.bin
Open On-Chip Debugger 0.10.0+dev-01404-g393448342-dirty (2020-10-11-00:01)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
DEPRECATED! use 'adapter driver' not 'interface'
Info : auto-selecting first available session transport "jtag". To override use 'transport select <transport>'.
DEPRECATED! use 'adapter speed' not 'adapter_khz'
fpga_program
Error: libusb_open() failed with LIBUSB_ERROR_ACCESS
Error: no device found
Error: unable to open ftdi device with vid 0403, pid 6010, description '*', serial '*' at bus location '*'