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ice40: Add warning if an instanciated SB_IO has its PACKAGE_PIN used elsewhere

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Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Sylvain Munaut 2018-11-16 14:44:24 +01:00
parent af5c4d1b11
commit e1e8d8cd14
1 changed files with 5 additions and 0 deletions
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5
ice40/pack.cc
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@ -438,6 +438,11 @@ static void pack_io(Context *ctx)
}
packed_cells.insert(ci->name);
std::copy(ci->attrs.begin(), ci->attrs.end(), std::inserter(sb->attrs, sb->attrs.begin()));
} else if (is_sb_io(ctx, ci)) {
NetInfo *net = ci->ports.at(ctx->id("PACKAGE_PIN")).net;
if ((net != nullptr) && (net->users.size() > 1))
log_error("PACKAGE_PIN of SB_IO '%s' connected to more than a single top level IO.\n",
ci->name.c_str(ctx));
}
}
for (auto pcell : packed_cells) {