134 lines
6.4 KiB
C++
134 lines
6.4 KiB
C++
/*
|
|
* nextpnr -- Next Generation Place and Route
|
|
*
|
|
* Copyright (C) 2018 Claire Xenia Wolf <claire@yosyshq.com>
|
|
* Copyright (C) 2018 gatecat <gatecat@ds0.me>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#include "pcf.h"
|
|
#include <sstream>
|
|
#include "log.h"
|
|
#include "util.h"
|
|
|
|
NEXTPNR_NAMESPACE_BEGIN
|
|
|
|
// Read a w
|
|
|
|
// Apply PCF constraints to a pre-packing design
|
|
bool apply_pcf(Context *ctx, std::string filename, std::istream &in)
|
|
{
|
|
try {
|
|
if (!in)
|
|
log_error("failed to open PCF file\n");
|
|
std::string line;
|
|
int lineno = 0;
|
|
while (std::getline(in, line)) {
|
|
lineno++;
|
|
size_t cstart = line.find('#');
|
|
if (cstart != std::string::npos)
|
|
line = line.substr(0, cstart);
|
|
std::stringstream ss(line);
|
|
std::vector<std::string> words;
|
|
std::string tmp;
|
|
while (ss >> tmp)
|
|
words.push_back(tmp);
|
|
if (words.size() == 0)
|
|
continue;
|
|
std::string cmd = words.at(0);
|
|
bool nowarn = false;
|
|
if (cmd == "set_io") {
|
|
size_t args_end = 1;
|
|
std::vector<std::pair<IdString, Property>> extra_attrs;
|
|
while (args_end < words.size() && words.at(args_end).at(0) == '-') {
|
|
const auto &setting = words.at(args_end);
|
|
if (setting == "-pullup") {
|
|
const auto &value = words.at(++args_end);
|
|
if (value == "yes" || value == "1")
|
|
extra_attrs.emplace_back(std::make_pair(id_PULLUP, Property::State::S1));
|
|
else if (value == "no" || value == "0")
|
|
extra_attrs.emplace_back(std::make_pair(id_PULLUP, Property::State::S0));
|
|
else
|
|
log_error("Invalid value '%s' for -pullup (on line %d)\n", value.c_str(), lineno);
|
|
} else if (setting == "-pullup_resistor") {
|
|
const auto &value = words.at(++args_end);
|
|
if (ctx->args.type != ArchArgs::UP5K && ctx->args.type != ArchArgs::UP3K)
|
|
log_error("Pullup resistance can only be set on UP5K/UP3K (on line %d)\n", lineno);
|
|
if (value != "3P3K" && value != "6P8K" && value != "10K" && value != "100K")
|
|
log_error("Invalid value '%s' for -pullup_resistor (on line %d)\n", value.c_str(), lineno);
|
|
extra_attrs.emplace_back(std::make_pair(id_PULLUP_RESISTOR, value));
|
|
} else if (setting == "-nowarn") {
|
|
nowarn = true;
|
|
} else if (setting == "--warn-no-port") {
|
|
} else {
|
|
log_warning("Ignoring PCF setting '%s' (on line %d)\n", setting.c_str(), lineno);
|
|
}
|
|
args_end++;
|
|
}
|
|
if (args_end > words.size() - 2)
|
|
log_error("expected PCF syntax 'set_io cell pin' (on line %d)\n", lineno);
|
|
else if (args_end < words.size() - 2 && !nowarn)
|
|
log_warning("Ignoring trailing PCF settings (on line %d)\n", lineno);
|
|
|
|
std::string cell = words.at(args_end);
|
|
std::string pin = words.at(args_end + 1);
|
|
auto fnd_cell = ctx->cells.find(ctx->id(cell));
|
|
if (fnd_cell == ctx->cells.end()) {
|
|
if (!nowarn)
|
|
log_warning("unmatched constraint '%s' (on line %d)\n", cell.c_str(), lineno);
|
|
} else {
|
|
BelId pin_bel = ctx->get_package_pin_bel(pin);
|
|
if (pin_bel == BelId())
|
|
log_error("package does not have a pin named '%s' (on line %d)\n", pin.c_str(), lineno);
|
|
if (fnd_cell->second->attrs.count(id_BEL))
|
|
log_error("duplicate pin constraint on '%s' (on line %d)\n", cell.c_str(), lineno);
|
|
fnd_cell->second->attrs[id_BEL] = ctx->getBelName(pin_bel).str(ctx);
|
|
log_info("constrained '%s' to bel '%s'\n", cell.c_str(),
|
|
fnd_cell->second->attrs[id_BEL].as_string().c_str());
|
|
for (const auto &attr : extra_attrs)
|
|
fnd_cell->second->attrs[attr.first] = attr.second;
|
|
}
|
|
} else if (cmd == "set_frequency") {
|
|
if (words.size() < 3)
|
|
log_error("expected PCF syntax 'set_frequency net frequency' (on line %d)\n", lineno);
|
|
ctx->addClock(ctx->id(words.at(1)), std::stof(words.at(2)));
|
|
} else {
|
|
log_error("unsupported PCF command '%s' (on line %d)\n", cmd.c_str(), lineno);
|
|
}
|
|
}
|
|
for (auto &cell : ctx->cells) {
|
|
CellInfo *ci = cell.second.get();
|
|
if (ci->type == ctx->id("$nextpnr_ibuf") || ci->type == ctx->id("$nextpnr_obuf") ||
|
|
ci->type == ctx->id("$nextpnr_iobuf")) {
|
|
if (!ci->attrs.count(id_BEL)) {
|
|
if (bool_or_default(ctx->settings, id_pcf_allow_unconstrained))
|
|
log_warning("IO '%s' is unconstrained in PCF and will be automatically placed\n",
|
|
cell.first.c_str(ctx));
|
|
else
|
|
log_error("IO '%s' is unconstrained in PCF (override this error with "
|
|
"--pcf-allow-unconstrained)\n",
|
|
cell.first.c_str(ctx));
|
|
}
|
|
}
|
|
}
|
|
ctx->settings[ctx->id("input/pcf")] = filename;
|
|
return true;
|
|
} catch (log_execution_error_exception) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
NEXTPNR_NAMESPACE_END
|