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intel_alm: convert to memory_libmap

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This commit is contained in:
Lofty 2024-05-03 13:19:42 +01:00
parent 8cc9aa7fc6
commit e523caa680
6 changed files with 68 additions and 66 deletions
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1
techlibs/intel_alm/Makefile.inc
View file

@ -21,6 +21,7 @@ $(eval $(call add_share_file,share/intel_alm/cyclonev,techlibs/intel_alm/cyclone
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/bram_m10k.txt)) $(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/bram_m10k.txt))
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/bram_m10k_map.v)) $(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/bram_m10k_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.txt))
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/lutram_mlab_map.v))
# Miscellaneous # Miscellaneous
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/megafunction_bb.v)) $(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/megafunction_bb.v))

45
techlibs/intel_alm/common/bram_m10k.txt
View file

@ -1,29 +1,16 @@
bram $__MISTRAL_M10K ram block $__MISTRAL_M10K {
init 1 abits 13;
abits 13 @D8192x1 widths 1 2 5 10 20 40 global; # TODO: per-port width
dbits 1 @D8192x1 cost 128;
abits 12 @D4096x2 init no_undef;
dbits 2 @D4096x2 # the following is subject to change as more is implemented in nextpnr-mistral
abits 11 @D2048x5 port sw "W" {
dbits 5 @D2048x5 clock posedge;
abits 10 @D1024x10 wrtrans "R" old;
dbits 10 @D1024x10 }
abits 9 @D512x20 port sr "R" {
dbits 20 @D512x20 clock posedge;
abits 8 @D256x40 rden;
dbits 40 @D256x40 rdinit zero;
groups 2 }
ports 1 1 }
wrmode 1 0
# read enable; write enable + byte enables (only for multiples of 8)
enable 1 1
transp 0 0
clocks 1 1
clkpol 1 1
endbram
match $__MISTRAL_M10K
min efficiency 5
make_transp
endmatch

26
techlibs/intel_alm/common/bram_m10k_map.v
View file

@ -1,26 +1,26 @@
// Stub to invert M10K write-enable. // Stub to invert M10K write-enable.
module \$__MISTRAL_M10K (CLK1, A1ADDR, A1DATA, A1EN, B1ADDR, B1DATA, B1EN); module \$__MISTRAL_M10K (PORT_W_CLK, PORT_W_ADDR, PORT_W_WR_DATA, PORT_W_WR_EN, PORT_R_CLK, PORT_R_ADDR, PORT_R_RD_DATA, PORT_R_RD_EN);
parameter INIT = 0; parameter INIT = 0;
parameter WIDTH = 10;
parameter CFG_ABITS = 10; input PORT_W_CLK, PORT_R_CLK;
parameter CFG_DBITS = 10; input [12:0] PORT_W_ADDR, PORT_R_ADDR;
input [WIDTH-1:0] PORT_W_WR_DATA;
input PORT_W_WR_EN, PORT_R_RD_EN;
output reg [WIDTH-1:0] PORT_R_RD_DATA;
input CLK1; localparam CFG_ABITS = WIDTH == 40 ? 8 : WIDTH == 20 ? 9 : WIDTH == 10 ? 10 : WIDTH == 5 ? 11 : WIDTH == 2 ? 12 : 13;
input [CFG_ABITS-1:0] A1ADDR, B1ADDR;
input [CFG_DBITS-1:0] A1DATA;
input A1EN, B1EN;
output reg [CFG_DBITS-1:0] B1DATA;
// Normal M10K configs use WREN[1], which is negative-true. // Normal M10K configs use WREN[1], which is negative-true.
// However, 8x40-bit mode uses WREN[0], which is positive-true. // However, 8x40-bit mode uses WREN[0], which is positive-true.
wire a1en; wire wren;
if (CFG_DBITS == 40) if (WIDTH == 40)
assign a1en = A1EN; assign wren = PORT_W_WR_EN;
else else
assign a1en = !A1EN; assign wren = !PORT_W_WR_EN;
MISTRAL_M10K #(.INIT(INIT), .CFG_ABITS(CFG_ABITS), .CFG_DBITS(CFG_DBITS)) _TECHMAP_REPLACE_ (.CLK1(CLK1), .A1ADDR(A1ADDR), .A1DATA(A1DATA), .A1EN(a1en), .B1ADDR(B1ADDR), .B1DATA(B1DATA), .B1EN(B1EN)); MISTRAL_M10K #(.INIT(INIT), .CFG_ABITS(CFG_ABITS), .CFG_DBITS(WIDTH)) _TECHMAP_REPLACE_ (.CLK1(PORT_W_CLK), .A1ADDR(PORT_W_ADDR), .A1DATA(PORT_W_WR_DATA), .A1EN(wren), .B1ADDR(PORT_R_ADDR), .B1DATA(PORT_R_RD_DATA), .B1EN(PORT_R_RD_EN));
endmodule endmodule

30
techlibs/intel_alm/common/lutram_mlab.txt
View file

@ -1,18 +1,12 @@
bram MISTRAL_MLAB ram distributed $__MISTRAL_MLAB {
init 0 # TODO: Re-enable when Yosys remembers the original filename. abits 5;
abits 5 width 1;
dbits 1 cost 4;
groups 2 init zero; # TODO: MLAB init in nextpnr-mistral
ports 1 1 prune_rom;
wrmode 1 0 port sw "W" {
# write enable clock posedge;
enable 1 0 }
transp 0 0 port ar "R" {
clocks 1 0 }
clkpol 1 1 }
endbram
match MISTRAL_MLAB
min efficiency 5
make_outreg
endmatch

13
techlibs/intel_alm/common/lutram_mlab_map.v Normal file
View file

@ -0,0 +1,13 @@
module \$__MISTRAL_MLAB (PORT_W_CLK, PORT_W_ADDR, PORT_W_WR_DATA, PORT_W_WR_EN, PORT_R_ADDR, PORT_R_RD_DATA);
parameter INIT = 0;
input PORT_W_CLK;
input [4:0] PORT_W_ADDR, PORT_R_ADDR;
input [4:0] PORT_W_WR_DATA;
input PORT_W_WR_EN;
output reg PORT_R_RD_DATA;
MISTRAL_MLAB _TECHMAP_REPLACE_ (.CLK1(PORT_W_CLK), .A1ADDR(PORT_W_ADDR), .A1DATA(PORT_W_WR_DATA), .A1EN(PORT_W_WR_EN), .B1ADDR(PORT_R_ADDR), .B1DATA(PORT_R_RD_DATA));
endmodule

19
techlibs/intel_alm/synth_intel_alm.cc
View file

@ -224,13 +224,20 @@ struct SynthIntelALMPass : public ScriptPass {
run("opt_clean"); run("opt_clean");
} }
if (!nobram && check_label("map_bram", "(skip if -nobram)")) { if (check_label("map_ram", "(skip if -nobram)")) {
run(stringf("memory_bram -rules +/intel_alm/common/bram_%s.txt", bram_type.c_str())); std::string args = "";
run(stringf("techmap -map +/intel_alm/common/bram_%s_map.v", bram_type.c_str())); if (help_mode)
} args += " [-no-auto-block] [-no-auto-distributed]";
else {
if (nobram)
args += " -no-auto-block";
if (nolutram)
args += " -no-auto-distributed";
}
if (!nolutram && check_label("map_lutram", "(skip if -nolutram)")) { run(stringf("memory_libmap -lib +/intel_alm/common/bram_%s.txt -lib +/intel_alm/common/lutram_mlab.txt %s", bram_type.c_str(), args.c_str()), "(-no-auto-block if -nobram, -no-auto-distributed if -nolutram)");
run("memory_bram -rules +/intel_alm/common/lutram_mlab.txt", "(for Cyclone V)"); run(stringf("techmap -map +/intel_alm/common/bram_%s_map.v", bram_type.c_str()));
run("techmap -map +/intel_alm/common/lutram_mlab_map.v");
} }
if (check_label("map_ffram")) { if (check_label("map_ffram")) {