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ecp5: Adding bitstream gen for slice config

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2018-07-09 12:55:56 +02:00
parent bad926bcc3
commit b397dd8071
2 changed files with 26 additions and 0 deletions
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12
common/util.h
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@ -39,6 +39,18 @@ ValueType get_or_default(const Container &ct, const KeyType &key, ValueType def
return found->second;
};
// Get a value from a map-style container, returning default if value is not
// found (forces string)
template <typename Container, typename KeyType>
std::string str_or_default(const Container &ct, const KeyType &key, std::string def = "")
{
auto found = ct.find(key);
if (found == ct.end())
return def;
else
return found->second;
};
// Get a value from a map-style container, converting to int, and returning
// default if value is not found
template <typename Container, typename KeyType> int int_or_default(const Container &ct, const KeyType &key, int def = 0)

14
ecp5/bitstream.cc
View File

@ -118,6 +118,20 @@ void write_bitstream(Context *ctx, std::string base_config_file, std::string tex
int lut1_init = int_or_default(ci->params, ctx->id("LUT1_INITVAL"));
cc.tiles[tname].add_word(slice + ".K0.INIT", int_to_bitvector(lut0_init, 16));
cc.tiles[tname].add_word(slice + ".K1.INIT", int_to_bitvector(lut1_init, 16));
cc.tiles[tname].add_enum(slice + ".MODE", str_or_default(ci->params, ctx->id("MODE"), "LOGIC"));
cc.tiles[tname].add_enum(slice + ".GSR", str_or_default(ci->params, ctx->id("GSR"), "ENABLED"));
cc.tiles[tname].add_enum(slice + ".REG0.SD", str_or_default(ci->params, ctx->id("REG0_SD"), "0"));
cc.tiles[tname].add_enum(slice + ".REG1.SD", str_or_default(ci->params, ctx->id("REG1_SD"), "0"));
cc.tiles[tname].add_enum(slice + ".REG0.REGSET",
str_or_default(ci->params, ctx->id("REG0_REGSET"), "RESET"));
cc.tiles[tname].add_enum(slice + ".REG1.REGSET",
str_or_default(ci->params, ctx->id("REG1_REGSET"), "RESET"));
cc.tiles[tname].add_enum(slice + ".CEMUX", str_or_default(ci->params, ctx->id("CEMUX"), "1"));
// TODO: CLKMUX, CEMUX, carry
} else if (ci->type == ctx->id("TRELLIS_IO")) {
// TODO: IO config
} else {
NPNR_ASSERT_FALSE("unsupported cell type");
}
}