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Gowin. Handle the WRITE_MODE.

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Process the WRITE_MODE in the GW5A series in a more concise manner.

You can check it in the same way as in
https://github.com/YosysHQ/yosys/pull/5440

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
This commit is contained in:
YRabbit 2025-10-25 16:36:46 +10:00 • committed by Lofty
parent f5c9e122de
commit 3956f103a9
4 changed files with 9 additions and 75 deletions
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1
techlibs/gowin/Makefile.inc
View file

@ -10,6 +10,5 @@ $(eval $(call add_share_file,share/gowin,techlibs/gowin/arith_map.v))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/brams_map.v))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/brams_map_gw5a.v))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/brams.txt))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/brams_gw5a.txt))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/lutrams_map.v))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/lutrams.txt))

12
techlibs/gowin/brams.txt
View file

@ -19,8 +19,10 @@ ram block $__GOWIN_SP_ {
portoption "WRITE_MODE" 1 {
rdwr new;
}
portoption "WRITE_MODE" 2 {
rdwr old;
ifndef gw5a {
portoption "WRITE_MODE" 2 {
rdwr old;
}
}
}
}
@ -46,8 +48,10 @@ ram block $__GOWIN_DP_ {
portoption "WRITE_MODE" 1 {
rdwr new;
}
portoption "WRITE_MODE" 2 {
rdwr old;
ifndef gw5a {
portoption "WRITE_MODE" 2 {
rdwr old;
}
}
}
}

69
techlibs/gowin/brams_gw5a.txt
View file

@ -1,69 +0,0 @@
ram block $__GOWIN_SP_ {
abits 14;
widths 1 2 4 9 18 36 per_port;
cost 128;
init no_undef;
port srsw "A" {
clock posedge;
clken;
option "RESET_MODE" "SYNC" {
rdsrst zero ungated;
}
option "RESET_MODE" "ASYNC" {
rdarst zero;
}
rdinit zero;
portoption "WRITE_MODE" 0 {
rdwr no_change;
}
portoption "WRITE_MODE" 1 {
rdwr new;
}
}
}
ram block $__GOWIN_DP_ {
abits 14;
widths 1 2 4 9 18 per_port;
cost 128;
init no_undef;
port srsw "A" "B" {
clock posedge;
clken;
option "RESET_MODE" "SYNC" {
rdsrst zero ungated;
}
option "RESET_MODE" "ASYNC" {
rdarst zero;
}
rdinit zero;
portoption "WRITE_MODE" 0 {
rdwr no_change;
}
portoption "WRITE_MODE" 1 {
rdwr new;
}
}
}
ram block $__GOWIN_SDP_ {
abits 14;
widths 1 2 4 9 18 36 per_port;
cost 128;
init no_undef;
port sr "R" {
clock posedge;
clken;
option "RESET_MODE" "SYNC" {
rdsrst zero ungated;
}
option "RESET_MODE" "ASYNC" {
rdarst zero;
}
rdinit zero;
}
port sw "W" {
clock posedge;
clken;
}
}

2
techlibs/gowin/synth_gowin.cc
View file

@ -263,7 +263,7 @@ struct SynthGowinPass : public ScriptPass
if (nolutram)
args += " -no-auto-distributed";
}
run(stringf("memory_libmap -lib +/gowin/lutrams.txt -lib +/gowin/brams%s.txt", family == "gw5a" ? "_gw5a" : "") + args, "(-no-auto-block if -nobram, -no-auto-distributed if -nolutram)");
run(stringf("memory_libmap -lib +/gowin/lutrams.txt -lib +/gowin/brams.txt -D %s", family) + args, "(-no-auto-block if -nobram, -no-auto-distributed if -nolutram)");
run(stringf("techmap -map +/gowin/lutrams_map.v -map +/gowin/brams_map%s.v", family == "gw5a" ? "_gw5a" : ""));
}