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38 commits

Author SHA1 Message Date
YRabbit
d60dc93e92 Gowin. Renaming inputs of the DCS primitive. 
The dynamic clock selection (DCS) primitive has undergone changes with
the release of the GW5A series—the CLK0,1,2,3 inputs are now
CLKIN0,1,2,3, but only for GW5A series chips.

There are no functional changes, only renaming.

Here we are transferring the description of the DCS primitive from
general to specialized files for each chip series.

We have also fixed a bug in the generation script that caused the loss
of primitive parameters. Fortunately, this only affected the
analog-to-digital converter, which has not yet been implemented.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
 2025-09-20 16:22:23 +01:00
Aritz Erkiaga
9a11204329 Update ALU MULT mode in gowin to match nextpnr 2024-12-23 11:12:48 +01:00
YRabbit
ab35dff702 Gowin. Add the EMCU primitive. 
EMCU is a micro-processor based on ARM Cortex-M3 embedded in the
GW1NSR-4C chip used in the Tangnano4k board.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
 2024-09-11 10:18:51 +10:00
David Lanzendörfer
d1b767ea8b Adding missing to Gowin tech files 
Without OSER4_MEM, IDES4_MEM and DQS the synthesis of my Rocket Chip
design for my Sipeed Tang FPGA fails.
 2024-08-18 19:38:31 +01:00
Emil J
43c1328fbb
Merge pull request #4479 from yrabbit/z1-power 
Gowin. Add an energy saving primitive
 2024-07-18 11:56:00 +02:00
YRabbit
19bbdd8800 Gowin. Add the DCS primitive 
Not so much adding the primitive itself, but only its DCS_MODE
parameter, without which an error occurs.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
 2024-07-11 21:39:44 +10:00
YRabbit
9d0bca9775 Gowin. Add an energy saving primitive 
We add a BANDGAP primitive used to turn off power to OSC, PLL and other
things on some GOWIN chips.

We also mark this primitive and GSR as keep.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
 2024-07-06 18:58:21 +10:00
Lofty
294844137b gowin: fix abc9 attributes and specify blocks 2023-10-04 00:16:10 +01:00
YRabbit
f9a6c0fcbd gowin: Add serialization/deserialization primitives 
Primitives are added to convert parallel signals to serial and vice versa.

IDES4, IDES8, IDES10, IDES16, IVIDEO, OSER4, OSER8, OSER10, OSER16, OVIDEO.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
 2023-04-12 09:59:57 +01:00
Miodrag Milanović
bb28e48136
Merge pull request #3663 from uis246/master 
gowin: Add new types of oscillator
 2023-02-28 06:56:01 +01:00
uis
ea6f562d49 gowin: Add new types of oscillator 2023-02-06 21:34:32 +00:00
martell
dbc8b77222 gowin: Add support for emulated differential output 2023-01-29 20:48:43 -08:00
YRabbit
d6a1e022e1 gowin: add a new type of PLL - PLLVR 
This primitive is used in the GW1NS-4, GW1NS-4C, GW1NSR-4, GW1NSR-4C and
GW1NSER-4C chips.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
 2023-01-11 11:41:29 +10:00
Tim Pambor
30bc0d26ea gowin: Add oscillator primitives 2022-03-28 13:33:24 +02:00
YRabbit
19b7633aca gowin: add support for Double Data Rate primitives 
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
 2022-03-14 23:14:21 +01:00
YRabbit
22d9bbb308 gowin: Remove unnecessary attributes 
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
 2022-02-24 05:38:33 +01:00
YRabbit
9b3cd4f0d8 gowin: Add support for true differential output 
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
 2022-02-24 05:38:33 +01:00
Marcelina Kościelnicka
3a62fa0c97 gowin: Add remaining block RAM blackboxes. 2022-02-12 11:48:57 +01:00
Marcelina Kościelnicka
f61f2a4078 gowin: Fix LUT RAM inference, add more models. 2022-02-09 09:04:34 +01:00
Pepijn de Vos
c2d358484f
Gowin: deal with active-low tristate (#2971) 
* deal with active-low tristate

* remove empty port

* update sim models

* add expected lut1 to tests
 2021-08-20 21:21:06 +02:00
Konrad Beckmann
5b9a975eba synth_gowin: Add rPLL blackbox 2020-11-11 17:06:54 +01:00
Dan Ravensloft
7f45cab27a synth_gowin: ABC9 support 
This adds ABC9 support for synth_gowin; drastically improving
synthesis quality.
 2020-07-05 22:07:17 +02:00
Marcelina Kościelnicka
9beed4d771 gowin: Fix INIT values in sim library. 2020-07-05 03:03:48 +02:00
Pepijn de Vos
0f6269b04c add IOBUF 2019-10-28 15:33:05 +01:00
Pepijn de Vos
903f997391 add tristate buffer and test 2019-10-28 15:18:01 +01:00
Pepijn de Vos
f88335a8a5 add wide luts 2019-10-28 12:49:08 +01:00
Pepijn de Vos
8226f2db0b ALU sim tweaks 2019-10-24 13:39:43 +02:00
Pepijn de Vos
8a2699c40c add negedge DFF 2019-10-21 12:31:11 +02:00
Pepijn de Vos
af7bdd598e use ADDSUB ALU mode to remove inverters 2019-10-21 12:00:27 +02:00
Pepijn de Vos
72323e11a4 remove duplicate DFFR 2019-10-16 11:24:56 +02:00
Pepijn de Vos
2fb20f184a Revert "add MUX support" 
It turns out that they make everything worse and they don't PnR.

This reverts commit 3eff2271d0.
 2019-09-06 11:28:17 +02:00
Pepijn de Vos
1b9f7f49b5 add more DFF to sim lib 2019-09-06 09:01:07 +02:00
Pepijn de Vos
5168b6ffa4 WIP aditional DFF primitives 2019-09-05 19:12:47 +02:00
Pepijn de Vos
3eff2271d0 add MUX support 2019-09-05 13:36:41 +02:00
Diego
f9272fc56d GoWin enablement: DRAM, initial BRAM, DRAM init, DRAM sim and synth_gowin flow 2019-04-12 23:40:02 -05:00
Diego H
819ca73096 Changes in GoWin synth commands and ALU primitive support 2018-12-03 20:08:35 -06:00
Clifford Wolf
e9d73d2ee0 Indenting fixes in gowin sim cell lib 2016-11-08 18:54:00 +01:00
Clifford Wolf
cae5131bac Added initial version of "synth_gowin" 2016-11-01 11:31:13 +01:00