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ecp5: Add support for 'FREQUENCY NET' and 'FREQUENCY PORT' in lpf

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2019-02-22 11:46:43 +00:00
parent ae6c1170ef
commit 0bc88e622c
1 changed files with 24 additions and 1 deletions
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25
ecp5/lpf.cc
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@ -60,8 +60,31 @@ bool Arch::applyLPF(std::string filename, std::istream &in)
words.push_back(tmp);
if (words.size() >= 0) {
std::string verb = words.at(0);
if (verb == "BLOCK" || verb == "SYSCONFIG" || verb == "FREQUENCY") {
if (verb == "BLOCK" || verb == "SYSCONFIG") {
log_warning(" ignoring unsupported LPF command '%s'\n", command.c_str());
} else if (verb == "FREQUENCY") {
std::string etype = words.at(1);
if (etype == "PORT" || etype == "NET") {
std::string target = words.at(2);
if (target.at(0) == '\"') {
NPNR_ASSERT(target.back() == '\"');
target = target.substr(1, target.length() - 2);
}
float freq = std::stof(words.at(3));
std::string unit = words.at(4);
if (unit == "MHz")
;
else if (unit == "kHz")
freq /= 1.0e3;
else if (unit == "Hz")
freq /= 1.0e6;
else
log_error("unsupported frequency unit '%s'\n", unit.c_str());
addClock(id(target), freq);
} else {
log_warning(" ignoring unsupported LPF command '%s %s'\n", command.c_str(),
etype.c_str());
}
} else if (verb == "LOCATE") {
NPNR_ASSERT(words.at(1) == "COMP");
std::string cell = strip_quotes(words.at(2));