Commit Graph

15 Commits

Author SHA1 Message Date
7191c12490 wip: just need to get WARMBOOT working
Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-28 11:11:36 +08:00
3d6acaf51e sw: wip commit -- getting dfu working
Now that we have SPI and USB both working, we can start to close the
loop and get DFU working.

Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-25 17:39:06 +08:00
23b9962067 hw: foboot-bitstream: remove pmod debug comments
Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-20 13:12:53 +08:00
fa690d63ed hw: foboot-bitstream: clean up debug generation
Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-20 13:12:29 +08:00
4f0507fc77 hw: foboot-bitstream: remove "generating firmware" message
Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-20 13:12:08 +08:00
f3d779787b hw: foboot-bitstream: add reset to usb_48
This is required to meet timing.

Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-20 13:11:45 +08:00
b09333f023 hw: add spi and new vexriscv to foboot
This is the beginning of having SPI.

Also add a new two-stage pipeline.

Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-20 11:25:09 +08:00
2d7c7794f5 hw: foboot-bitstream: remove debug pins, use epfifo
Remove the debug pins to let timing close.

Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-10 21:06:37 +08:00
0c6e444789 hw: foboot-bitstream: add -relut and friends to nextpnr
Shrink the resulting gate count by adding -relut and adjusting the
number of luts that a CE signal can use.

Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-10 21:05:51 +08:00
8aed600cd6 hw: foboot-bitstream: specify additional clock domain constraints
Specify all the clock domain constraints for every possible signal, to
work around the fact that nextpnr currently will pick one and ignore the
rest.

Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-10 21:05:12 +08:00
6638801886 hw: foboot-bitstream: remove clk48_in signal
It's unused.

Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-10 21:04:19 +08:00
8fb6b5977b hw: foboot-bitstream: remove unused clk48 net
We only use the raw and usb48 nets.

Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-10 20:53:58 +08:00
d603113b6f foboot-bitstream: send clk48 through shifter, then through pll
Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-08 20:47:42 +08:00
3df59a866d metastable fix: wip
Trying to figure out what's causing this problem.

Signed-off-by: Sean Cross <sean@xobs.io>
2019-03-05 20:28:54 +08:00
8fe27d9371 Add 'hw/' from commit 'd812378c4d61f7c957ac4bcba15a8344fb7fb458'
git-subtree-dir: hw
git-subtree-mainline: e4af98b4aa
git-subtree-split: d812378c4d
2019-03-05 09:05:50 +08:00