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* gowin: Add support for IDES primitivesYRabbit2023-04-041-0/+10
| | | | | | | | | | | | * placement of IDES4, IVIDEO, IDES8 and IDES10 primitives is supported; * primitives are implemented for the GW1N-1, GW1NZ-1, GW1NSR-4C, GW1NR-9, GW1NR-9C chips; * tricks required for IOLOGIC to work on one side of the -9 and -9C chips are taken into account; Compatible with old apicula bases. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Rename questionable portsYRabbit2023-03-231-6/+6
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Add support for OSER primitivesYRabbit2023-03-231-0/+25
| | | | | | | | | | | | | | | | * placement of OSER4, OVIDEO, OSER8 and SER10 primitives is supported; * primitives are implemented for the GW1N-1, GW1NZ-1, GW1NSR-4C, GW1NR-9, GW1NR-9C chips; * the initial support for special HCLK clock wires is implemented to the extent necessary for OSER primitives to function; * output to both regular IO and TLVDS_OBUF is supported; * tricks required for IOLOGIC to work on one side of the -9 and -9C chips are taken into account; * various edits, such as using idf() instead of the local buffer. Compatible with old apicula bases. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Add bels for new types of oscillatoruis2023-02-061-0/+2
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* gowin: Add PLL support for the GW1NR-9C chipYRabbit2023-01-261-1/+0
| | | | | | | | | | | | | | | | | | | | This chip is used in the Tangnano9k board. * all parameters of the rPLL primitive are supported; * all PLL outputs are treated as clock sources and optimized routing is applied to them; * primitive rPLL on different chips has a completely different structure: for example in GW1N-1 it takes two cells, and in GW1NR-9C as many as four, despite this unification was carried out and different chips are processed by the same functions, but this led to the fact that you can not use the PLL chip GW1N-1 with the old apicula bases - will issue a warning and refuse to encode primitive. In other cases compatibility is supported. * Cosmetic change: the usage report shows the rPLL names without any service bels. * I use ctx->idf() on occasion, it's not a total redesign. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: add a PLL primitive for the GW1NS-4 seriesYRabbit2023-01-181-0/+2
| | | | | | | | | | * both instances of the new PLLVR type are supported; * primitive placement is optimized for the use of dedicated PLL clock pins; * all 4 outputs of each primitive can use the clock nets (only 5 lines in total at the same time so far). Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: add PLL pins processingYRabbit2022-12-041-0/+3
| | | | | | | | | | | Uses the information of the special input pins for the PLL in the current chip. If such pins are involved, no routing is performed and information about the use of implicit wires is passed to the packer. The RESET and RESET_P inputs are now also disabled if they are connected to VSS/VCC. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: mark the PLL ports that are not in useYRabbit2022-11-201-0/+8
| | | | | | | Unused ports are deactivated by special fuse combinations, rather than being left dangling in the air. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: add initial PLL supportYRabbit2022-11-101-0/+44
| | | | | | | | | | | The rPLL primitive for the simplest chip (GW1N-1) in the family is processed. All parameters of the primitive are passed on to gowin_pack, and general-purpose wires are used for routing outputs of the primitive. Compatible with older versions of apicula, but in this case will refuse to place the new primitive. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Remove incomprehensible names of the muxesYRabbit2022-07-191-4/+0
| | | | | | | | | | | | There is no need to multiply item names, it is a rudiment of my very first addition to nextpnr. Fully compatible with older versions of Apicula. Note: the cosmetic changes in lines with RAM are not my initiative, but the result of applying clang-format. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Merge branch 'master' into shadowramPepijn de Vos2022-07-021-0/+80
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| * gowin: Add support for long wiresYRabbit2022-05-271-0/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Gowin chips have a highly sophisticated system of long wires that are wired to each cell and allow the clock or logic to spread quickly. This commit implements some of the capabilities of the long wire system for quadrants, leaving out the fine-tuning of them for each column. To make use of the long wire system, the specified wire is cut at the driver and a special cell is placed between the driver and the rest of the wire. * VCC and GND can not use long wires because they are in every cell and there is no point in using a net * Long wire numbers can be specified manually or assigned automatically. * The route from the driver to the port of the new cell can be quite long, this will have to be solved somehow. * It might make sense to add a mechanism for automatically finding candidates for long wires. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* | lutram actually PnRsPepijn de Vos2022-06-061-0/+1
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* | WIP shadowramPepijn de Vos2022-06-051-0/+13
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* gowin: handle the GW1N-9 feature.YRabbit2022-04-031-0/+2
| | | | | | | | This chip has a different default state for one type of I/O buffer --- you have to explicitly switch it to the normal state by feeding VCC/VSS to certain inputs. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Add bels for oscillatorTim Pambor2022-03-271-0/+8
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* gowin: Consider the peculiarity of GW1BR-9CYRabbit2022-03-261-0/+2
| | | | | | | The GW1NR-9C chip ODDR implementation differs from all other supported chips by two suspicious inputs. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Gowin: use global VCC and VSS nets (#956)Pepijn de Vos2022-03-191-0/+2
| | | | | | | * use global VCC and VSS nets * derp * remove init parameter
* gowin: add support for ODDR primitiveYRabbit2022-03-151-0/+12
| | | | | | | | | Compatible with older versions of apicula bases. Also small fixes and as the number of virtual Bels grows it is necessary to assign them Z coordinate in a centralized way to avoid conflicts and for this purpose introduced the BelZ enum. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Add the Global Set/Reset primitiveYRabbit2022-03-121-0/+5
| | | | | | | | | GSR is added automatically if it was not instantiated by the user explicitly. Compatible with old apicula bases, the functionality does not work, but the crash does not happen --- just a warning. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Add support for true differential outputYRabbit2022-02-231-0/+5
| | | | | | | | | The new primitive appears as an amalgamation of two existing OBUF primitives. Compatible with older versions of apicula, although, of course, using TLVDS_OBUF with old databases will not bring the desired result, but no crash. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* refactor: Use constids instead of id("..")gatecat2022-02-161-0/+9
| | | | Signed-off-by: gatecat <gatecat@ds0.me>
* gowin: Add GUI.YRabbit2022-01-291-0/+342
| | | | | | | | | | | | | | | * Items such as LUT, DFF, MUX, ALU, IOB are displayed; * Local wires, 1-2-4-8 wires are displayed; * The clock spines, taps and branches are displayed with some caveats. For now, you can not create a project in the GUI because of possible conflict with another PR (about GW1NR-9C support), but you can specify the board in the command line and load .JSON and .CST in the GUI. Although ALUs are displayed, but the CIN and COUT wires are not. This is still an unsolved problem. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Add simplified IO cells processingYRabbit2021-12-201-0/+13
| | | | | | | | | | | | | | | Some models have I/O cells that are IOBUFs, and other types (IBUFs and OBUFs) are obtained by feeding 1 or 0 to the OEN input. This is done with general-purpose routing so it's best to do it here to avoid conflicts. For this purpose, in the new bases, these special cells are of type IOBS (IOB Simplified). The proposed changes are compatible with bases of previous versions of Apycula and do not require changing .CST constraint files. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Add ALU support.YRabbit2021-10-221-0/+8
| | | | | | | | - Both the mode used by yosys and all Gowin primitive modes are supported. - The ALU always starts with a zero slice. - The maximum length of the ALU chain is limited to one line of the chip. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Replace the zero delays with reasonable values.YRabbit2021-10-091-0/+3
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: add support for wide LUTs.YRabbit2021-10-071-0/+13
| | | | | | | | | * A hardwired MUX within each logical cell is used. * The delay is equal 0. * No user placement constraints. * The output route contains dummy PIPs. They are ignored by gowin_pack, but it may be worth removing them. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Gowin target (#542)Pepijn de Vos2020-12-301-0/+429
* load wires * add slice bels * add IOB * add aliases * local aliases * broken packing stuff * working packer * add constraints * pnr runs1111 * add timing info * constraints * more constraint stuff * add copyright * remove generic reference * remove parameters * remove generic python api * add newline to end of file * some small refactoring * warn on invalid constraints * don't error on missing cell * comment out debugging print * typo * avoid copy * faster empty idstring * remove intermediate variable * no more deadnames * fix cst warnings * increase ripup and epsilon a bit * take single device parameter * add info to readme * gui stubs * Revert 4d03b681a8634e978bd5af73c97665500047e055 * assign ff_used in assignArchInfo * decrease beta for better routability * try to fix CI
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