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Disabling BRAM commands in bitsream for LP384

This commit is contained in:
hermitsoft 2017-03-06 16:56:32 +01:00
parent e207307c74
commit 4d4738beea
1 changed files with 37 additions and 34 deletions
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71
icepack/icepack.cc
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@ -487,46 +487,49 @@ void FpgaConfig::write_bits(std::ostream &ofs) const
int bram_chunk_size = 128;
debug("BRAM: Setting bank width to %d.\n", this->bram_width);
write_byte(ofs, crc_value, file_offset, 0x62);
write_byte(ofs, crc_value, file_offset, (this->bram_width-1) >> 8);
write_byte(ofs, crc_value, file_offset, (this->bram_width-1));
debug("BRAM: Setting bank height to %d.\n", this->bram_height);
write_byte(ofs, crc_value, file_offset, 0x72);
write_byte(ofs, crc_value, file_offset, bram_chunk_size >> 8);
write_byte(ofs, crc_value, file_offset, bram_chunk_size);
for (int bram_bank = 0; bram_bank < 4; bram_bank++)
if (this->bram_width && this->bram_height)
{
debug("BRAM: Setting bank %d.\n", bram_bank);
write_byte(ofs, crc_value, file_offset, 0x11);
write_byte(ofs, crc_value, file_offset, bram_bank);
debug("BRAM: Setting bank width to %d.\n", this->bram_width);
write_byte(ofs, crc_value, file_offset, 0x62);
write_byte(ofs, crc_value, file_offset, (this->bram_width-1) >> 8);
write_byte(ofs, crc_value, file_offset, (this->bram_width-1));
for (int offset = 0; offset < this->bram_height; offset += bram_chunk_size)
debug("BRAM: Setting bank height to %d.\n", this->bram_height);
write_byte(ofs, crc_value, file_offset, 0x72);
write_byte(ofs, crc_value, file_offset, bram_chunk_size >> 8);
write_byte(ofs, crc_value, file_offset, bram_chunk_size);
for (int bram_bank = 0; bram_bank < 4; bram_bank++)
{
vector<bool> bram_bits;
for (int bram_y = 0; bram_y < bram_chunk_size; bram_y++)
for (int bram_x = 0; bram_x < this->bram_width; bram_x++)
bram_bits.push_back(this->bram[bram_bank][bram_x][bram_y+offset]);
debug("BRAM: Setting bank %d.\n", bram_bank);
write_byte(ofs, crc_value, file_offset, 0x11);
write_byte(ofs, crc_value, file_offset, bram_bank);
debug("BRAM: Setting bank offset to %d.\n", offset);
write_byte(ofs, crc_value, file_offset, 0x82);
write_byte(ofs, crc_value, file_offset, offset >> 8);
write_byte(ofs, crc_value, file_offset, offset);
for (int offset = 0; offset < this->bram_height; offset += bram_chunk_size)
{
vector<bool> bram_bits;
for (int bram_y = 0; bram_y < bram_chunk_size; bram_y++)
for (int bram_x = 0; bram_x < this->bram_width; bram_x++)
bram_bits.push_back(this->bram[bram_bank][bram_x][bram_y+offset]);
debug("BRAM: Writing bank %d data.\n", bram_bank);
write_byte(ofs, crc_value, file_offset, 0x01);
write_byte(ofs, crc_value, file_offset, 0x03);
for (int i = 0; i < int(bram_bits.size()); i += 8) {
uint8_t byte = 0;
for (int j = 0; j < 8; j++)
byte = (byte << 1) | (bram_bits[i+j] ? 1 : 0);
write_byte(ofs, crc_value, file_offset, byte);
debug("BRAM: Setting bank offset to %d.\n", offset);
write_byte(ofs, crc_value, file_offset, 0x82);
write_byte(ofs, crc_value, file_offset, offset >> 8);
write_byte(ofs, crc_value, file_offset, offset);
debug("BRAM: Writing bank %d data.\n", bram_bank);
write_byte(ofs, crc_value, file_offset, 0x01);
write_byte(ofs, crc_value, file_offset, 0x03);
for (int i = 0; i < int(bram_bits.size()); i += 8) {
uint8_t byte = 0;
for (int j = 0; j < 8; j++)
byte = (byte << 1) | (bram_bits[i+j] ? 1 : 0);
write_byte(ofs, crc_value, file_offset, byte);
}
write_byte(ofs, crc_value, file_offset, 0x00);
write_byte(ofs, crc_value, file_offset, 0x00);
}
write_byte(ofs, crc_value, file_offset, 0x00);
write_byte(ofs, crc_value, file_offset, 0x00);
}
}