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icestorm
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icetime progress

This commit is contained in:
Clifford Wolf 2016-01-15 23:36:05 +01:00
parent 8467e955e5
commit fdaac3542c
2 changed files with 13 additions and 6 deletions
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2
icetime/Makefile
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@ -26,7 +26,7 @@ uninstall:
test0 test1 test2 test3 test4 test5 test6 test7 test8 test9: icetime
test -f $@_ref.v || python3 mktest.py $@
./icetime -P tq144 -p $@.pcf $@.asc $@_out.v
./icetime -m -P tq144 -p $@.pcf $@.asc $@_out.v
yosys $@.ys
run0 run1 run2 run3 run4 run5 run6 run7 run8 run9: icetime

17
icetime/icetime.cc
View File

@ -28,13 +28,12 @@
#include <map>
#include <set>
#define MAX_SPAN_HACK 1
// add this number of ns as estimation for clock distribution mismatch
#define GLOBAL_CLK_DIST_JITTER 0.1
FILE *fin, *fout;
bool verbose = false;
bool max_span_hack = false;
std::string config_device, selected_package;
std::vector<std::vector<std::string>> config_tile_type;
@ -1510,7 +1509,7 @@ struct make_interconn_worker_t
cell_log[trg] = std::make_pair(*cursor, "IoSpan4Mux");
} else {
tn = tname();
netlist_cell_types[tn] = stringf("Span4Mux_%c%d", horiz ? 'h' : 'v', MAX_SPAN_HACK ? 4 : count_length);
netlist_cell_types[tn] = stringf("Span4Mux_%c%d", horiz ? 'h' : 'v', max_span_hack ? 4 : count_length);
netlist_cell_ports[tn]["I"] = seg_name(*cursor);
netlist_cell_ports[tn]["O"] = seg_name(trg);
cell_log[trg] = std::make_pair(*cursor, stringf("Span4Mux_%c%d", horiz ? 'h' : 'v', count_length));
@ -1538,7 +1537,7 @@ struct make_interconn_worker_t
count_length = std::max(count_length, 0);
tn = tname();
netlist_cell_types[tn] = stringf("Span12Mux_%c%d", horiz ? 'h' : 'v', MAX_SPAN_HACK ? 12 : count_length);
netlist_cell_types[tn] = stringf("Span12Mux_%c%d", horiz ? 'h' : 'v', max_span_hack ? 12 : count_length);
netlist_cell_ports[tn]["I"] = seg_name(*cursor);
netlist_cell_ports[tn]["O"] = seg_name(trg);
cell_log[trg] = std::make_pair(*cursor, stringf("Span12Mux_%c%d", horiz ? 'h' : 'v', count_length));
@ -1727,6 +1726,9 @@ void help(const char *cmd)
printf(" write a graphviz description of the interconnect tree\n");
printf(" that includes the given net to 'icetime_graph.dot'.\n");
printf("\n");
printf(" -m\n");
printf(" enable max_span_hack for conservative estimates\n");
printf("\n");
printf(" -t\n");
printf(" print a timing estimate (based on topological timing\n");
printf(" analysis)\n");
@ -1746,7 +1748,7 @@ int main(int argc, char **argv)
std::vector<std::string> print_timing_nets;
int opt;
while ((opt = getopt(argc, argv, "p:P:g:tT:v")) != -1)
while ((opt = getopt(argc, argv, "p:P:g:mtT:v")) != -1)
{
switch (opt)
{
@ -1760,6 +1762,9 @@ int main(int argc, char **argv)
case 'g':
graph_nets.insert(atoi(optarg));
break;
case 'm':
max_span_hack = true;
break;
case 't':
print_timing = true;
break;
@ -2006,6 +2011,8 @@ int main(int argc, char **argv)
printf("==========================================\n");
printf("\n");
printf("Warning: This timing analysis report is an estimate!\n");
if (max_span_hack)
printf("Info: max_span_hack is enabled: estimate is conservative.\n");
printf("\n");
TimingAnalysis ta;