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Add used cells and attach them to bels

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This commit is contained in:
Miodrag Milanovic 2018-07-21 17:04:24 +02:00
parent 80097526ee
commit 7beb4739d4
1 changed files with 39 additions and 0 deletions
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39
ice40/bitstream.cc
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@ -20,6 +20,7 @@
#include "bitstream.h"
#include <cctype>
#include <vector>
#include "cells.h"
#include "log.h"
NEXTPNR_NAMESPACE_BEGIN
@ -51,6 +52,20 @@ std::tuple<int8_t, int8_t, int8_t> get_ieren(const BitstreamInfoPOD &bi, int8_t
return std::make_tuple(-1, -1, -1);
};
bool get_config(const TileInfoPOD &ti, std::vector<std::vector<int8_t>> &tile_cfg, const std::string &name,
int index = -1)
{
const ConfigEntryPOD &cfg = find_config(ti, name);
if (index == -1) {
for (int i = 0; i < cfg.num_bits; i++) {
return tile_cfg.at(cfg.bits[i].row).at(cfg.bits[i].col);
}
} else {
return tile_cfg.at(cfg.bits[index].row).at(cfg.bits[index].col);
}
return false;
}
void set_config(const TileInfoPOD &ti, std::vector<std::vector<int8_t>> &tile_cfg, const std::string &name, bool value,
int index = -1)
{
@ -652,6 +667,30 @@ bool read_asc(Context *ctx, std::istream &in)
ctx->bindPip(pip, net, STRENGTH_WEAK);
}
}
for (auto bel : ctx->getBels()) {
if (ctx->getBelType(bel) == TYPE_ICESTORM_LC) {
const TileInfoPOD &ti = bi.tiles_nonrouting[TILE_LOGIC];
const BelInfoPOD &beli = ci.bel_data[bel.index];
int x = beli.x, y = beli.y, z = beli.z;
std::vector<bool> lc(20, false);
bool isUsed = false;
for (int i = 0; i < 20; i++) {
lc.at(i) = get_config(ti, config.at(y).at(x), "LC_" + std::to_string(z), i);
isUsed |= lc.at(i);
}
bool neg_clk = get_config(ti, config.at(y).at(x), "NegClk");
isUsed |= neg_clk;
bool carry_set = get_config(ti, config.at(y).at(x), "CarryInSet");
isUsed |= carry_set;
if (isUsed) {
std::unique_ptr<CellInfo> created = create_ice_cell(ctx, ctx->id("ICESTORM_LC"));
IdString name = created->name;
ctx->cells[name] = std::move(created);
ctx->bindBel(bel, name, STRENGTH_WEAK);
}
}
}
return true;
} catch (log_execution_error_exception) {
return false;