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ecp5: Bitsream gen tuning

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2018-07-24 22:26:26 +02:00
parent 5a7e7b2d03
commit 32c7247785
1 changed files with 16 additions and 11 deletions
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9
ecp5/bitstream.cc
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@ -191,7 +191,10 @@ void write_bitstream(Context *ctx, std::string base_config_file, std::string tex
CellInfo *ci = cell.second.get(); CellInfo *ci = cell.second.get();
if (ci->bel != BelId() && ci->type == ctx->id("TRELLIS_IO")) { if (ci->bel != BelId() && ci->type == ctx->id("TRELLIS_IO")) {
int bank = ctx->getPioBelBank(ci->bel); int bank = ctx->getPioBelBank(ci->bel);
std::string dir = str_or_default(ci->params, ctx->id("DIR"), "INPUT");
std::string iotype = str_or_default(ci->attrs, ctx->id("IO_TYPE"), "LVCMOS33"); std::string iotype = str_or_default(ci->attrs, ctx->id("IO_TYPE"), "LVCMOS33");
if (dir != "INPUT") {
IOVoltage vcc = get_vccio(ioType_from_str(iotype)); IOVoltage vcc = get_vccio(ioType_from_str(iotype));
if (bankVcc.find(bank) != bankVcc.end()) { if (bankVcc.find(bank) != bankVcc.end()) {
// TODO: strong and weak constraints // TODO: strong and weak constraints
@ -203,6 +206,8 @@ void write_bitstream(Context *ctx, std::string base_config_file, std::string tex
} else { } else {
bankVcc[bank] = vcc; bankVcc[bank] = vcc;
} }
}
if (iotype == "LVDS") if (iotype == "LVDS")
bankLvds[bank] = true; bankLvds[bank] = true;
} }
@ -275,8 +280,8 @@ void write_bitstream(Context *ctx, std::string base_config_file, std::string tex
other = "PIOD"; other = "PIOD";
else else
log_error("cannot place differential IO at location %s\n", pio.c_str()); log_error("cannot place differential IO at location %s\n", pio.c_str());
cc.tiles[pio_tile].add_enum(other + ".BASE_TYPE", "_NONE_"); //cc.tiles[pio_tile].add_enum(other + ".BASE_TYPE", "_NONE_");
cc.tiles[pic_tile].add_enum(other + ".BASE_TYPE", "_NONE_"); //cc.tiles[pic_tile].add_enum(other + ".BASE_TYPE", "_NONE_");
cc.tiles[pio_tile].add_enum(other + ".PULLMODE", "NONE"); cc.tiles[pio_tile].add_enum(other + ".PULLMODE", "NONE");
cc.tiles[pio_tile].add_enum(pio + ".PULLMODE", "NONE"); cc.tiles[pio_tile].add_enum(pio + ".PULLMODE", "NONE");
} }