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intel_alm: direct LUTRAM cell instantiation

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By instantiating the LUTRAM cell directly, we avoid a trip through
altsyncram, which speeds up Quartus synthesis time. This also gives
a little more flexibility, as Yosys can build RAMs out of individual
32x1 LUTRAM cells.

While working on this, I discovered that the mem_init0 parameter of
<family>_mlab_cell gets ignored by Quartus.
This commit is contained in:
Dan Ravensloft 2020-04-16 12:24:04 +01:00 • committed by Marcelina Kościelnicka
parent 0610424940
commit 5b779f7f4e
9 changed files with 163 additions and 52 deletions
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2
techlibs/intel_alm/Makefile.inc
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@ -7,13 +7,13 @@ $(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/al
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/arith_alm_map.v))
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/dff_map.v))
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/dff_sim.v))
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/mem_sim.v))
# RAM
bramtypes := m10k m20k
$(foreach bramtype, $(bramtypes), $(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/bram_$(bramtype).txt)))
$(foreach bramtype, $(bramtypes), $(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/bram_$(bramtype)_map.v)))
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/lutram_mlab.txt))
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/lutram_mlab_map.v))
# Miscellaneous
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/megafunction_bb.v))