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mistral: Add stub RBF generation

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Signed-off-by: gatecat <gatecat@ds0.me>
This commit is contained in:
gatecat 2021-05-09 19:48:04 +01:00
parent ad5e5f80ca
commit 27eb3be7da
4 changed files with 108 additions and 9 deletions
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1
mistral/arch.h
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@ -483,6 +483,7 @@ struct Arch : BaseArch<ArchRanges>
// -------------------------------------------------
void init_base_bitstream(); // base_bitstream.cc
void build_bitstream(); // bitstream.cc
};
NEXTPNR_NAMESPACE_END

18
mistral/base_bitstream.cc
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@ -33,15 +33,17 @@ void default_sx120f(CycloneV *cv)
cv->bmux_m_set(CycloneV::PMA3, CycloneV::xy2pos(0, 23), CycloneV::FFPLL_IQCLK_DIRECTION, 1, CycloneV::UP);
cv->bmux_m_set(CycloneV::PMA3, CycloneV::xy2pos(0, 35), CycloneV::FFPLL_IQCLK_DIRECTION, 0, CycloneV::UP);
cv->bmux_m_set(CycloneV::PMA3, CycloneV::xy2pos(0, 35), CycloneV::FFPLL_IQCLK_DIRECTION, 1, CycloneV::UP);
cv->bmux_b_set(CycloneV::PMA3, CycloneV::xy2pos(0, 35), CycloneV::FPLL_DRV_EN, -1, false);
cv->bmux_m_set(CycloneV::PMA3, CycloneV::xy2pos(0, 35), CycloneV::HCLK_TOP_OUT_DRIVER, -1, CycloneV::TRISTATE);
cv->bmux_b_set(CycloneV::PMA3, CycloneV::xy2pos(0, 35), CycloneV::FPLL_DRV_EN, 0, 0);
cv->bmux_m_set(CycloneV::PMA3, CycloneV::xy2pos(0, 35), CycloneV::HCLK_TOP_OUT_DRIVER, 0, CycloneV::TRISTATE);
// Default PLL config
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_ATB_EN0, -1, true);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_ATB_EN0_PRECOMP, -1, true);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_ATB_EN1, -1, true);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_ATB_EN1_PRECOMP, -1, true);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_BG_KICKSTART, -1, true);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_VBGMON_POWERDOWN, -1, true);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_ATB_EN0, 0, 1);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_ATB_EN0_PRECOMP, 0, 1);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_ATB_EN1, 0, 1);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_ATB_EN1_PRECOMP, 0, 1);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_BG_KICKSTART, 0, 1);
cv->bmux_b_set(CycloneV::FPLL, CycloneV::xy2pos(0, 73), CycloneV::PL_AUX_VBGMON_POWERDOWN, 0, 1);
// Default TERM config
cv->bmux_b_set(CycloneV::TERM, CycloneV::xy2pos(89, 34), CycloneV::INTOSC_2_EN, 0, 0);
// Discover these mux values using
// grep 'i [_A-Z0-9.]* 1' empty.bt

84
mistral/bitstream.cc Normal file
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@ -0,0 +1,84 @@
/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2021 gatecat <gatecat@ds0.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include "log.h"
#include "nextpnr.h"
#include "util.h"
NEXTPNR_NAMESPACE_BEGIN
namespace {
struct MistralBitgen
{
MistralBitgen(Context *ctx) : ctx(ctx), cv(ctx->cyclonev){};
Context *ctx;
CycloneV *cv;
void init()
{
ctx->init_base_bitstream();
// Default options
cv->opt_b_set(CycloneV::ALLOW_DEVICE_WIDE_OUTPUT_ENABLE_DIS, true);
cv->opt_n_set(CycloneV::CRC_DIVIDE_ORDER, 8);
cv->opt_b_set(CycloneV::CVP_CONF_DONE_EN, true);
cv->opt_b_set(CycloneV::DEVICE_WIDE_RESET_EN, true);
cv->opt_n_set(CycloneV::DRIVE_STRENGTH, 8);
cv->opt_b_set(CycloneV::IOCSR_READY_FROM_CSR_DONE_EN, true);
cv->opt_b_set(CycloneV::NCEO_DIS, true);
cv->opt_b_set(CycloneV::OCT_DONE_DIS, true);
cv->opt_r_set(CycloneV::OPT_A, 0x1dff);
cv->opt_r_set(CycloneV::OPT_B, 0xffffff402dffffffULL);
cv->opt_b_set(CycloneV::RELEASE_CLEARS_BEFORE_TRISTATES_DIS, true);
cv->opt_b_set(CycloneV::RETRY_CONFIG_ON_ERROR_EN, true);
cv->opt_r_set(CycloneV::START_UP_CLOCK, 0x3F);
}
void write_routing()
{
for (auto net : sorted(ctx->nets)) {
NetInfo *ni = net.second;
for (auto wire : sorted_ref(ni->wires)) {
PipId pip = wire.second.pip;
if (pip == PipId())
continue;
WireId src = ctx->getPipSrcWire(pip), dst = ctx->getPipDstWire(pip);
// Only write out routes that are entirely in the Mistral domain. Everything else is dealt with
// specially
if (src.is_nextpnr_created() || dst.is_nextpnr_created())
continue;
cv->rnode_link(src.node, dst.node);
}
}
}
void run()
{
cv->clear();
init();
write_routing();
}
};
} // namespace
void Arch::build_bitstream()
{
MistralBitgen gen(getCtx());
gen.run();
}
NEXTPNR_NAMESPACE_END

14
mistral/main.cc
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@ -50,12 +50,24 @@ po::options_description MistralCommandHandler::getArchOptions()
specific.add_options()("mistral", po::value<std::string>(), "path to mistral root");
specific.add_options()("device", po::value<std::string>(), "device name (e.g. 5CSEBA6U23I7)");
specific.add_options()("qsf", po::value<std::string>(), "path to QSF constraints file");
specific.add_options()("rbf", po::value<std::string>(), "RBF bitstream to write");
return specific;
}
void MistralCommandHandler::customBitstream(Context *ctx)
{
// TODO: rbf gen via mistral
if (vm.count("rbf")) {
std::string filename = vm["rbf"].as<std::string>();
ctx->build_bitstream();
std::vector<uint8_t> data;
ctx->cyclonev->rbf_save(data);
std::ofstream out(filename, std::ios::binary);
if (!out)
log_error("Failed to open output RBF file %s.\n", filename.c_str());
out.write(reinterpret_cast<const char *>(data.data()), data.size());
}
}
std::unique_ptr<Context> MistralCommandHandler::createContext(std::unordered_map<std::string, Property> &values)