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ice40/pack: Make sure we don't use a LOCKED bel when placing PLL 

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Sylvain Munaut 2018-11-17 10:19:08 +01:00
parent b29165eeba
commit 8c69a3bba3
1 changed files with 2 additions and 0 deletions
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2
ice40/pack.cc
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@ -838,6 +838,8 @@ static void pack_special(Context *ctx)
for (auto bel : ctx->getBels()) {
if (ctx->getBelType(bel) != id_ICESTORM_PLL)
continue;
if (ctx->isBelLocked(bel))
continue;
// A PAD PLL must have its' PACKAGEPIN on the SB_IO that's shared
// with PLLOUT_A.