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ice40: Add error message if a selected site is not Global Buffer capable 

... rather than assert()-out during the call to getWireBelPins() call

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Sylvain Munaut 2019-01-18 17:51:55 +01:00
parent c1d15c749c
commit 830d462f92
1 changed files with 4 additions and 0 deletions
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4
ice40/pack.cc
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@ -388,6 +388,10 @@ static std::unique_ptr<CellInfo> create_padin_gbuf(Context *ctx, CellInfo *cell,
BelId gb_bel;
BelId bel = ctx->getBelByName(ctx->id(cell->attrs[ctx->id("BEL")]));
auto wire = ctx->getBelPinWire(bel, port_name);
if (wire == WireId())
log_error("BEL '%s' has no global buffer connection available\n", ctx->getBelName(bel).c_str(ctx));
for (auto src_bel : ctx->getWireBelPins(wire)) {
if (ctx->getBelType(src_bel.bel) == id_SB_GB && src_bel.pin == id_GLOBAL_BUFFER_OUTPUT) {
gb_bel = src_bel.bel;