[lowrisc-dev] make bitstream error

Dinesh Thirumurthy dinesh.thirumurthy at gmail.com
Wed Dec 26 10:14:48 GMT 2018


Hi,

While doing

make bitstream

as given in

https://www.lowrisc.org/docs/generate-the-bitstream/

I get the following error:

---------------------------------------------------------------------------------
Start Area Optimization
---------------------------------------------------------------------------------
WARNING: [Synth 8-3332] Sequential element (IOBUF_inst) is unused and will
be removed from module io_buffer_generic__3.
WARNING: [Synth 8-3332] Sequential element (IOBUF_inst) is unused and will
be removed from module io_buffer_generic.
WARNING: [Synth 8-3332] Sequential element (timer_5usec_count_reg[7]) is
unused and will be removed from module ps2_keyboard.
WARNING: [Synth 8-3332] Sequential element (timer_5usec_count_reg[6]) is
unused and will be removed from module ps2_keyboard.
WARNING: [Synth 8-3332] Sequential element (timer_5usec_count_reg[5]) is
unused and will be removed from module ps2_keyboard.
WARNING: [Synth 8-3332] Sequential element (timer_5usec_count_reg[4]) is
unused and will be removed from module ps2_keyboard.
WARNING: [Synth 8-3332] Sequential element (timer_5usec_count_reg[3]) is
unused and will be removed from module ps2_keyboard.
WARNING: [Synth 8-3332] Sequential element (timer_5usec_count_reg[2]) is
unused and will be removed from module ps2_keyboard.
WARNING: [Synth 8-3332] Sequential element (timer_5usec_count_reg[1]) is
unused and will be removed from module ps2_keyboard.
WARNING: [Synth 8-3332] Sequential element (timer_5usec_count_reg[0]) is
unused and will be removed from module ps2_keyboard.
/home/rise/tools/Vivado/Vivado/2016.1/bin/loader: line 164:  6678
Killed                  "$RDI_PROG" "$@"
Parent process (pid 6678) has died. This helper process will now exit
[Wed Dec 26 15:27:09 2018] synth_1 finished
wait_on_run: Time (s): cpu = 00:04:14 ; elapsed = 00:09:40 . Memory (MB):
peak = 1161.652 ; gain = 3.898 ; free physical = 2757 ; free virtual = 3474
# launch_runs impl_1 -to_step write_bitstream
ERROR: [Common 17-70] Application Exception: Failed to launch run 'impl_1'
due to failures in the following run(s):
synth_1
These failed run(s) need to be reset prior to launching 'impl_1' again.

INFO: [Common 17-206] Exiting Vivado at Wed Dec 26 15:27:25 2018...
Makefile:151: recipe for target
'lowrisc-chip-imp/lowrisc-chip-imp.runs/impl_1/chip_top.bit' failed
make: *** [lowrisc-chip-imp/lowrisc-chip-imp.runs/impl_1/chip_top.bit]
Error 1
dt at m:~/l/lowrisc-chip/fpga/board/nexys4_ddr$

I am using an 4GB RAM Ubuntu 16.04.5

dt at marina:~/l/e/nexys$ lsb_release -a; cat /proc/meminfo | head
No LSB modules are available.
Distributor ID:    Ubuntu
Description:    Ubuntu 16.04.5 LTS
Release:    16.04
Codename:    xenial
MemTotal:        3733908 kB
MemFree:         1683560 kB
MemAvailable:    2417840 kB
Buffers:           23752 kB
Cached:          1087320 kB
SwapCached:        17312 kB
Active:           963596 kB
Inactive:         903124 kB
Active(anon):     749428 kB
Inactive(anon):   201432 kB

Any suggestions on how to overcome this?

This is refresh-v0.6

Thanks.

Regards,
Dinesh


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