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Sylvain Munaut
271cc7be11 ice40/pack: Add helper to constain cells that are unique in the FPGA 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
519d4e2af8 ice40: Add support for SB_GB_IO 
During packing we replace them by standard SB_IO cells and create the
'fake' SB_GB that matches that IO site global buffer connection.

It's done in a separate pass because we need to make sure the nextpnr iob
have been dealt first so we have our final Bel location on the SB_IO.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
d8e4c21d96 ice40: Add support for PLL global outputs via PADIN 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
bc9f2da470 ice40: Introduce the concept of forPadIn SB_GB 
Those are cells that are created mainly to handle the various sources a
global network can be driven from other than a user net.

When the flag is set, this means the global network usually driven by
this BEL is in fact driven by something else and so that SB_GB BEL and
matching global network can't be used.

This is also what gets used to set the extra bits during bitstream
generation.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
325d46e284 ice40/chipdb: Add wires to global network for all cells that can drive it 
The icebox DB is a bit inconsistent in how global network connections
are represented. Here we make it appear consistent by creating ports
on the cells that can drive it.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
3f4dc7c80e ice40: Add GlobalNetowkrInfo in the chip database 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
c219d8fe4d ice40: Fix BEL validity check for PLL vs SB_IO 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
9483a95a4a ice40: Improve the is_sb_pll40_XXX predicates collection 
- Add a test for dual output PLL variant
 - Make them handle the packet version of the cell

 This will become useful for various tests during PLL rework

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
f6d6022984 ice40: Fix PLLTYPE for SB_PLL40_2F_PAD 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
ad23caef33 ice40/pll: Add proper support for PLLOUT_SELECT_xxx attributes 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
78f3c2c37d ice40: Make PLL default FEEDBACK_MODE to SIMPLE 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
35e9ec7737 ice40: Minor fix in predicate checking for logic port 
- is_sb_pll40 covers all the PLL types
 - Use helper to test for gbuf

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
ac5d767d4f ice40/pack: Stop looking for BEL when we have one during PLL placement 
Ideally we should first process all the PLL that are constrained somehow
(either explicitely or because they are PAD) and then free place the rest.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
5fb3353557 ice40/pack: Allow PLL to be constrained via 'BEL' attributes 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
8c69a3bba3 ice40/pack: Make sure we don't use a LOCKED bel when placing PLL 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
b29165eeba ice40/arch: Add helper to check if a BEL is LOCKED or not 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:20:20 +01:00
Sylvain Munaut
70e1fe423f ice40/chipdb: Fix LOCKED keyword support to include all packages 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 13:12:43 +01:00
Sylvain Munaut
42fbb110fc ice40/bitstream: Handle IoCtrl.IE_ polarity when configuring unused SB_IO 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 13:12:43 +01:00
David Shah
1851ebb1c6
Merge pull request #124 from smunaut/ice40_warn_sbio_misuse 
ice40: Add warning if an instanciated SB_IO has its PACKAGE_PIN used elsewhere
 2018-11-16 15:56:45 +00:00
Sylvain Munaut
e1e8d8cd14 ice40: Add warning if an instanciated SB_IO has its PACKAGE_PIN used elsewhere 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-16 16:36:57 +01:00
David Shah
af5c4d1b11
Merge pull request #123 from smunaut/ice40_fix_line_endings 
ice40/bitstream: Convert to UNIX line endings
 2018-11-16 15:28:35 +00:00
Sylvain Munaut
01950a2349 ice40/bitstream: Convert to UNIX line endings 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-16 16:24:56 +01:00
David Shah
9c52afcf5f clangformat 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-16 13:25:51 +00:00
David Shah
20aa0a0eed ice40: Remove unnecessary RAM assertion 
Fixes #121

Signed-off-by: David Shah <dave@ds0.me>
 2018-11-16 13:18:53 +00:00
David Shah
cfaa6c0e5d
Merge pull request #119 from cr1901/win-fix 
nextpnr-ecp5 Windows Fixes
 2018-11-16 10:00:13 +00:00
David Shah
fe4f98f26f
Merge pull request #118 from daveshah1/dcu 
Adding ECP5 DCU support
 2018-11-16 09:58:34 +00:00
David Shah
f07bd98d59 ecp5: Better use of Boost 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-16 09:58:18 +00:00
David Shah
7e1df82462 ecp5: Regression fix & format 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:54:28 +00:00
David Shah
91a0927196 ecp5: Support LOC attribute on DCUs 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
01e0da16f0 ecp5: Add DCU availability check 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
02736d0680 ecp5: Add timing info for SERDES 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
084f9cf63f ecp5: DCU clocking fixes 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
0eba7d9789 ecp5: EXTREFB fixes 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
bc022173f0 ecp5: clangformat 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
36178a5713 ecp5: Trim IO connected to top level ports 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
e9fe444dc7 ecp5: Adding ancillary DCU bels 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
37cbabecfb ecp5: remove debug and clangformat 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
c9d83ec08b dcu: Fix bitstream param handling 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
4f8dfd8e1b ecp5: Prefer DCCs with dedicated routing when placing DCCs 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
c5a3571a06 ecp5: Working on DCU 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
983903887d ecp5: DCU bitstream gen handling 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
cc9fb1497d ecp5: Groundwork for DCU support 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:30:27 +00:00
David Shah
9472b6d78f
Merge pull request #103 from YosysHQ/timingapi 
Timing constraints API, multiple clock domains
 2018-11-15 11:26:08 +00:00
David Shah
9f9b242cf0 docs: Add documentation on constraints support 
Signed-off-by: David Shah <dave@ds0.me>
 2018-11-15 11:25:26 +00:00
Eddie Hung
e1d2c595a1 Improve message spacing 2018-11-14 18:27:43 -08:00
Eddie Hung
06ddb632d1 Merge remote-tracking branch 'origin/master' into timingapi 2018-11-14 17:59:21 -08:00
Eddie Hung
d3b2065cd7
Merge pull request #114 from YosysHQ/fix_legalise 
Fix legalise
 2018-11-14 17:58:16 -08:00
David Shah
adc50a207f Timing fixes 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-11-14 08:46:10 +00:00
Eddie Hung
df2622d300 [placer1] Only perform slack redist if legalised 2018-11-13 16:33:01 -08:00
Eddie Hung
1b93107843 [placer1] Only increase temperature if legaliser moved something 2018-11-13 16:33:01 -08:00