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author | Sylvain Munaut <tnt@246tNt.com> | 2020-06-02 20:21:05 +0200 |
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committer | Sylvain Munaut <tnt@246tNt.com> | 2020-06-02 20:21:16 +0200 |
commit | 9b71bba747936e8c5fcb81880d570b515c63599f (patch) | |
tree | 61a8075a3e495af8249a95b2c6aa3169abb5dce4 /ice40/bitstream.cc | |
parent | 5e2b6bcef945a89daa215d01e15120162f81da7b (diff) | |
download | nextpnr-9b71bba747936e8c5fcb81880d570b515c63599f.tar.gz nextpnr-9b71bba747936e8c5fcb81880d570b515c63599f.tar.bz2 nextpnr-9b71bba747936e8c5fcb81880d570b515c63599f.zip |
ice40: Add fallback behavior for Extra Cell config bits vectors
This helps make new nextpnr compatible with old chipdbs when a parameters
goes from single bit to multi bit.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Diffstat (limited to 'ice40/bitstream.cc')
-rw-r--r-- | ice40/bitstream.cc | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/ice40/bitstream.cc b/ice40/bitstream.cc index 3865316f..85f1e847 100644 --- a/ice40/bitstream.cc +++ b/ice40/bitstream.cc @@ -133,6 +133,16 @@ static const BelConfigPOD &get_ec_config(const ChipInfoPOD *chip, BelId bel) typedef std::vector<std::vector<std::vector<std::vector<int8_t>>>> chipconfig_t; +static bool has_ec_cbit(const BelConfigPOD &cell_cbits, std::string name) +{ + for (int i = 0; i < cell_cbits.num_entries; i++) { + const auto &cbit = cell_cbits.entries[i]; + if (cbit.entry_name.get() == name) + return true; + } + return false; +} + static void set_ec_cbit(chipconfig_t &config, const Context *ctx, const BelConfigPOD &cell_cbits, std::string name, bool value, std::string prefix) { @@ -190,7 +200,7 @@ void configure_extra_cell(chipconfig_t &config, const Context *ctx, CellInfo *ce } value.resize(p.second); - if (p.second == 1) { + if ((p.second == 1) || !has_ec_cbit(bc, p.first + "_0")) { set_ec_cbit(config, ctx, bc, p.first, value.at(0), prefix); } else { for (int i = 0; i < p.second; i++) { |