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Author SHA1 Message Date
Austin Seipp
fc71cadda4 scripts/icestorm: switch to nextpnr-ice40 
nextpnr-ice40 gives a better fMAX for this design (by about ~9Mhz for
me: ~59MHz -> ~68MHz) and is The Way Of The Future.

Signed-off-by: Austin Seipp <aseipp@pobox.com>
 2019-01-11 16:09:07 -06:00
Austin Seipp
070367c88d scripts/icestorm: touch up Makefile a bit 
This touches up the Makefile so that it:

  - uses $@, $< and $^ in more places for brevity and robustness (typo
    guards, etc)
  - tracks dependencies slightly better (e.g. .pcf file changes weren't
    tracked before)

Signed-off-by: Austin Seipp <aseipp@pobox.com>
 2019-01-11 15:59:56 -06:00
Austin Seipp
42b7477ba7 Add shell.nix for Nix-based PicoRV32 development 
The net result of this is that cd'ing into the main source directory and
running:

    $ nix-shell

will get you every tool needed to immediately do RISC-V development with
picorv32 or picosoc (assuming you're targeting ICE40 or ECP5).

The shell.nix file contains many comments on how to use the resulting
environment.

Signed-off-by: Austin Seipp <aseipp@pobox.com>
 2019-01-11 15:58:31 -06:00
Austin Seipp
9bf2fcb410 gitignore: update to ignore verilator artifacts 
Signed-off-by: Austin Seipp <aseipp@pobox.com>
 2019-01-11 13:10:43 -06:00
Clifford Wolf
9b70921103
Merge pull request #102 from emilio93/patch-2 
Update vivado scripts
 2018-11-09 13:03:48 +01:00
Emilio Rojas
d7daf9b2cd use 32 bit toolchain 2018-11-08 17:52:05 -06:00
Emilio Rojas
451bf030be update to current vivado version 2018-11-08 17:51:45 -06:00
Clifford Wolf
de479b0905
Merge pull request #101 from mmicko/master 
Alignment fix for global symbols fixes #97
 2018-10-30 10:59:07 +01:00
Miodrag Milanovic
2f16c46918 Alignment fix for global symbols fixes #97 2018-10-28 18:48:19 +01:00
Clifford Wolf
3a6ac16259
Merge pull request #94 from hutch31/master 
Added new testbench and linker file for ROM load
 2018-10-19 13:04:41 +02:00
Guy Hutchison
82b44105a0
Merge pull request #1 from cliffordwolf/master 
Fix typo in README.md
 2018-10-18 13:55:02 -07:00
Guy Hutchison
4e766af587 Renamed linker file 2018-10-18 20:52:46 +00:00
Guy Hutchison
5c0e137792 Removed dead code and cleanup before pull request 2018-10-18 20:51:40 +00:00
Guy Hutchison
73318eaeab Removed multiplier/divider 2018-10-18 20:33:40 +00:00
Guy Hutchison
f47ac81c89 Passing with custom linker file 2018-10-18 18:47:06 +00:00
Clifford Wolf
a721bb0c6e Fix typo in README.md 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-10-17 12:34:49 +02:00
Clifford Wolf
ef386e8f17 Add libexpt1-dev to list of Ubuntu packages needed for building tools, closes #88 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-10-02 10:03:40 +02:00
Clifford Wolf
cf613d2088
Merge pull request #90 from bobbl/master 
Fix PicoSoC firmware filename for simulation
 2018-10-01 14:22:14 +02:00
Jörg Mische
cb766a3757 Fix PicoSoC firmware filename for simulation 2018-10-01 14:00:21 +02:00
Clifford Wolf
0d573311ce
Merge pull request #89 from emilio93/patch-1 
Update Risc-V website link for tools
 2018-09-30 14:27:17 +02:00
Emilio Rojas
e507c54058
Update Risc-V website link for tools 
Current link ends up in 404 error
 2018-09-15 12:08:11 -06:00
Clifford Wolf
028aa757df
Merge pull request #85 from olofk/fusesoc-icebreaker 
Add FuseSoC support for icebreaker
 2018-09-03 11:02:01 +02:00
Olof Kindgren
7b9641ad97 Add FuseSoC support for icebreaker 2018-09-02 22:48:47 +02:00
Clifford Wolf
23d7bbdc8b Add rvfi_mode (set to constant 3 = M-mode) 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-31 12:21:01 +02:00
Clifford Wolf
e3ce4ef800
Merge pull request #82 from mattvenn/master 
fixes for hx8k board demo
 2018-08-31 12:17:41 +02:00
matt venn
fabb3eaf70 fix firmware recipes 2018-08-30 22:27:34 +02:00
matt venn
fe1867817d fix ifdef to include flash functions for hx8k 2018-08-30 22:27:18 +02:00
Clifford Wolf
e9c5831097 Fix chown call in Makefile (for building tools) 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-26 18:23:55 +02:00
Clifford Wolf
2d6d5c055b More PicoSoC firmware improvements for icebreaker 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-19 14:39:20 +02:00
Clifford Wolf
68c69136b9 Add icebreaker example PicoSoC implementation 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-19 13:38:59 +02:00
Clifford Wolf
1afe3af452 Add PicoSoC IceBreaker demo 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-18 20:17:21 +02:00
Clifford Wolf
b634224ccb
Merge pull request #79 from olofk/irqconfig 
Expose ENABLE_IRQ_QREGS and PROGADDR_IRQ from picosoc.v
 2018-08-18 19:32:35 +02:00
Olof Kindgren
75aa1055f8 Expose ENABLE_IRQ_QREGS and PROGADDR_IRQ from picosoc.v 2018-08-16 22:06:26 +02:00
Clifford Wolf
7c256656c2 PicoSoC: Use RDSR1+RDCR1+WRR instead of RDAR+WRAR 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-16 14:09:12 +02:00
Clifford Wolf
89c2761f57 Update riscv-gnu-toolchain 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-14 20:54:30 +02:00
Clifford Wolf
4c1e0f47a6 Add rs232 decode to picosoc hx8kdemo test bench 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-14 14:27:09 +02:00
Clifford Wolf
28d6f97b00 Fix picosoc quad spi mode (flashio_worker must be multiple of 4 bytes) 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-14 14:26:49 +02:00
Clifford Wolf
b3f292a988 Improve picosoc demo firmware, picosoc firmware build fixes 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-14 13:49:08 +02:00
Clifford Wolf
ce9d92939a
Merge pull request #61 from mmicko/linker-script 
Created lds file (section mapping) and init for data and bss sections
 2018-08-14 13:05:56 +02:00
Clifford Wolf
2a0cff8672
Merge pull request #74 from olofk/picosoc-fusesoc_v2 
Picosoc fusesoc v2
 2018-08-14 13:04:03 +02:00
Olof Kindgren
12274e9f8a Add FuseSoC .core file for hx8kdemo 
The core file specifies targets for FPGA implementation (fusesoc
build hx8kdemo) and simulation (fusesoc run --tool=<tool>
--target=sim hx8kdemo --firmware=path/to/firmware.he).

Simulation has been tested successfully with icarus, modelsim and xsim
 2018-07-27 23:23:41 +02:00
Olof Kindgren
80f128713d Add FuseSoC .core file for picosoc 
This allows other cores to depend on the generic parts of picosoc
and use that as a base design.
 2018-07-27 23:23:41 +02:00
Olof Kindgren
262da6444c Add FuseSoC .core file for SPI Flash model 
This allows other cores to depend on spiflash. Can also be used to
run the spiflash testbench with

fusesoc run --tool=<tool> spiflash --firmware=path/to/firmware.hex

This has been tested with icarus, modelsim and xsim. Fails with isim
If --tool is left out, icarus will be used as default
 2018-07-26 23:26:43 +02:00
Clifford Wolf
9b6ea045f9 Update riscv-gnu-toolchain to cb6b34b 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-29 22:35:22 +02:00
Clifford Wolf
4fed27fc16 Fix showtrace.py for changed objdump output format 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-05-25 21:13:14 +02:00
Clifford Wolf
1cc9784d71 Fix "make testbench_verilator" bug 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-05-25 21:04:30 +02:00
Clifford Wolf
3f55fb4ccb Improve testbench_verilator 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-05-25 13:04:49 +02:00
Clifford Wolf
247a19dd58 Add "make test_verilator" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-05-25 12:53:21 +02:00
Clifford Wolf
147da6432a
Merge pull request #69 from olofk/picosoc_regs_v3 
Bypass picosoc compile order check if PICORV32_REGS is defined.
 2018-05-19 12:09:52 +02:00
Olof Kindgren
2ceb472178 Bypass picosoc compile order check if PICORV32_REGS is defined. 
Previously, picosoc.v needed to be sourced before picorv32.v to
ensure that the PICORV32_REGS `define (used to select implementation
for the register file) was set to picosoc_regs

This allows for overriding PICORV32_REGS, e.g. by setting it
externally in the EDA tool invocation. In this case, the compile
order between picorv32.v and picosoc.v is not important.

Note: This change will break the safety check if PICORV32_REGS
is defined between sourcing picorv32.v and picosoc.v
 2018-05-18 23:52:31 +02:00