Merge pull request #1603 from whitequark/ice40-ram_style

ice40/ecp5: add support for both 1364.1 and Synplify/LSE RAM/ROM attributes

1 files changed, 168 insertions, 0 deletions

diff --git a/tests/arch/ice40/memories.ys b/tests/arch/ice40/memories.ys
new file mode 100644
index 000000000..571edec1d
--- /dev/null
+++ b/tests/arch/ice40/memories.ys
@@ -0,0 +1,168 @@
+# ================================ RAM ================================
+# RAM bits <= 4K; Data width <= 16; Address width <= 11: -> SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 11 -set DATA_WIDTH 2 sync_ram_sdp
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 1 t:SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 10 -set DATA_WIDTH 4 sync_ram_sdp
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 1 t:SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 9 -set DATA_WIDTH 8 sync_ram_sdp
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 1 t:SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 8 -set DATA_WIDTH 16 sync_ram_sdp
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 1 t:SB_RAM40_4K
+
+## With parameters
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_ram_sdp
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 0 t:SB_RAM40_4K # too inefficient
+select -assert-min 1 t:SB_DFFE
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_ram_sdp
+setattr -set syn_ramstyle "block_ram" m:memory
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 1 t:SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_ram_sdp
+setattr -set syn_ramstyle "Block_RAM" m:memory
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 1 t:SB_RAM40_4K # any case works
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_ram_sdp
+setattr -set ram_block 1 m:memory
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 1 t:SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_ram_sdp
+setattr -set syn_ramstyle "registers" m:memory
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 0 t:SB_RAM40_4K # requested FFRAM explicitly
+select -assert-min 1 t:SB_DFFE
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_ram_sdp
+setattr -set logic_block 1 m:memory
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 0 t:SB_RAM40_4K # requested FFRAM explicitly
+select -assert-min 1 t:SB_DFFE
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_ram_sdp
+setattr -set syn_romstyle "ebr" m:memory
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 1 t:$mem # requested BROM but this is a RAM
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_ram_sdp
+setattr -set rom_block 1 m:memory
+synth_ice40 -top sync_ram_sdp; cd sync_ram_sdp
+select -assert-count 1 t:$mem # requested BROM but this is a RAM
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_ram_sdp
+setattr -set syn_ramstyle "block_ram" m:memory
+synth_ice40 -top sync_ram_sdp -nobram; cd sync_ram_sdp
+select -assert-count 1 t:$mem # requested BRAM but BRAM is disabled
+
+design -reset; read_verilog ../common/blockram.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_ram_sdp
+setattr -set ram_block 1 m:memory
+synth_ice40 -top sync_ram_sdp -nobram; cd sync_ram_sdp
+select -assert-count 1 t:$mem # requested BRAM but BRAM is disabled
+
+# ================================ ROM ================================
+# ROM bits <= 4K; Data width <= 16; Address width <= 11: -> SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 11 -set DATA_WIDTH 2 sync_rom
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 1 t:SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 10 -set DATA_WIDTH 4 sync_rom
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 1 t:SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 9 -set DATA_WIDTH 8 sync_rom
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 1 t:SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 8 -set DATA_WIDTH 16 sync_rom
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 1 t:SB_RAM40_4K
+
+## With parameters
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_rom
+write_ilang
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 0 t:SB_RAM40_4K # too inefficient
+select -assert-min 1 t:SB_LUT4
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_rom
+setattr -set syn_romstyle "ebr" m:memory
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 1 t:SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_rom
+setattr -set rom_block 1 m:memory
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 1 t:SB_RAM40_4K
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_rom
+setattr -set syn_romstyle "logic" m:memory
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 0 t:SB_RAM40_4K # requested LUTROM explicitly
+select -assert-min 1 t:SB_LUT4
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_rom
+setattr -set logic_block 1 m:memory
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 0 t:SB_RAM40_4K # requested LUTROM explicitly
+select -assert-min 1 t:SB_LUT4
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_rom
+setattr -set syn_ramstyle "block_ram" m:memory
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 1 t:$mem # requested BRAM but this is a ROM
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_rom
+setattr -set ram_block 1 m:memory
+synth_ice40 -top sync_rom; cd sync_rom
+select -assert-count 1 t:$mem # requested BRAM but this is a ROM
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_rom
+setattr -set syn_romstyle "ebr" m:memory
+synth_ice40 -top sync_rom -nobram; cd sync_rom
+select -assert-count 1 t:$mem # requested BROM but BRAM is disabled
+
+design -reset; read_verilog ../common/blockrom.v
+chparam -set ADDRESS_WIDTH 2 -set DATA_WIDTH 8 sync_rom
+setattr -set rom_block 1 m:memory
+synth_ice40 -top sync_rom -nobram; cd sync_rom
+select -assert-count 1 t:$mem # requested BROM but BRAM is disabled