Init and enable Cobble for repo

Author: arjenroodselaar

BUILD.conf

@@ -0,0 +1,103 @@
+# -*- python -*- vim:syntax=python:
+
+plugin_path(
+    'tools/site_cobble',
+    'vnd/cobble/tools/site_cobble',
+    'vnd/cobble/src/cobble/target')
+
+install('bluespec')
+install('c')
+install('nextpnr')
+install('shell')
+install('yosys')
+
+environment('default', contents = {
+    'bsc': VARS.get('bluespec', 'bin', default='bsc'),
+    'bsc_flags': [
+        '-q',
+        '-show-range-conflict',
+    ],
+    'bluescan': ROOT + 'vnd/cobble/tools/site_cobble/bluescan.py',
+    'bluescan_flags' : [
+        '--bs-prefix ' + VARS.get('bluespec', 'prefix', default='/opt/bluespec')
+    ],
+    'yosys': VARS.get('yosys', 'bin', default='yosys'),
+
+    'cxx': VARS.get('c', 'cxx', default='c++'),
+    'cxx_flags': [
+        '-std=c++17',
+        '-Werror-all',
+        '-I' + ROOT,
+    ],
+    'c_link_flags': [
+    ],
+    'ar': VARS.get('c', 'ar', default='ar'),
+})
+
+environment('bluesim_default', base = 'default', contents = {
+    'bsc_flags': [
+        '-keep-fires',
+        '-check-assert',
+    ],
+})
+
+environment('cxxrtl_default', base = 'default', contents = {
+    'yosys_cmds': [
+        'hierarchy -top $$top_module',
+    ],
+    'yosys_backend': 'cxxrtl -header',
+    'cxx_flags': [
+        '-Wno-array-bounds',
+        '-Wno-shift-count-overflow',
+    ],
+})
+
+# FPGA Family environments.
+environment('ecp5', base = 'default', contents = {
+    # Default synthesis commands for ECP5.
+    'yosys_cmds': [
+        'synth_ecp5 -top $$top_module',
+    ],
+    'yosys_backend': 'json', # nextpnr assumes JSON input.
+    'nextpnr_ecp5': VARS.get('nextpnr', 'ecp5', default='nextpnr-ecp5'),
+    'nextpnr_ecp5_flags': [
+        '-q',
+    ],
+    'nextpnr_ecp5_pack': VARS.get('nextpnr', 'ecp5_pack', default='ecppack'),
+})
+environment('ice40', base = 'default', contents = {
+    'yosys_cmds': [
+        'synth_ice40 -top $$top_module',
+    ],
+    'yosys_backend': 'json', # nextpnr assumes JSON input.
+    'nextpnr_ice40': VARS.get('nextpnr', 'ice40', default='nextpnr-ice40'),
+    'nextpnr_ice40_flags': [
+        '-q',
+    ],
+    'nextpnr_ice40_pack': VARS.get('nextpnr', 'ice40_pack', default='icepack'),
+})
+
+# Board environments/variants.
+environment('ecp5_evn', base = 'ecp5', contents = {
+    'nextpnr_ecp5_flags': [
+        '--um5g-85k',
+        '--package CABGA381',
+    ],
+    'nextpnr_constraints': ROOT + '/vnd/cobalt/hdl/boards/ecp5_evn/ecp5_evn_basic.lpf',
+})
+environment('ulx3s', base = 'ecp5', contents = {
+    'nextpnr_ecp5_flags': [
+        '--85k',
+        '--package CABGA381',
+    ],
+    'nextpnr_constraints': ROOT + '/vnd/cobalt/hdl/boards/ulx3s/ulx3s_v20.lpf',
+})
+environment('icestick', base = 'ice40', contents = {
+    'nextpnr_ice40_flags': [
+        '--hx1k',
+        '--package tq144',
+    ],
+    'nextpnr_constraints': ROOT + '/vnd/cobalt/hdl/boards/icestick/icestick.pcf',
+})
+
+seed('//hdl')

BUILD.vars.example

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+[bluespec]
+prefix = "/usr/local"
+bin = "/usr/local/bin/bsc"
+libdir = "/usr/local/lib/bluespec"
+
+[yosys]
+bin = "/usr/local/bin/yosys"
+libdir = "/usr/local/share/yosys"
+
+[nextpnr]
+ecp5 = "/usr/local/bin/nextpnr-ecp5"
+ecp5_pack = "/usr/local/bin/ecppack"
+ice40 = "/usr/local/bin/nextpnr-ice40"
+ice40_pack = "/usr/local/bin/icepack"

hdl/BUILD

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+# -*- python -*- vim:syntax=python:

tools/site_cobble/README.md

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+Quartz specific Cobble plugins go here. But consider whether they are generic enough to go into
+vnd/cobalt/tools/site_cobble.