[> Changes since 2023.08 ------------------------ [> Fixed -------- [> Added -------- cpu/naxriscv : Added SMP support. cpu/neorv32 : Added Debug support and update core complex. cpu/vexriscv_smp : Added hardware breakpoints support. build/colognechip : Added initial support. [> Changed ---------- build/osfpga: Removed initial support (would need feedbacks/updates). [> 2023.08, released on September 14th 2023 ------------------------------------------- [> Fixed -------- - lattice/programmer : Fixed ECPDAP frequency specification. - soc/add_spi_sdcard : Fixed Tristate build. - csr/fields : Fixed access type checks. - software/liblitespi : Fixed support with debug. - cpu/vexriscv_smp : Fixed compilation with Gowin toolchain (ex for Tang Nano 20K Linux). - liteiclink/serwb : Fixed 7-Series initialization corner cases. - liteeth/core/icmp : Fixed length check on LiteEthICMPEcho before passing data to buffer. - LiteXModule/CSR : Fixed CSR collection order causing CSR clock domain to be changed. - litepcie/US(P) : Fixed root cause of possible MSI deadlock. - soc/add_uart : Fixed stub behavior (sink/source swap). - build/efinix : Fixed AsyncFIFO issues (Minimum of 2 buffer stages). - software/gcc : Fixed Ubuntu 22.04 GCC compilation issues. - build/efinix : Fixed hardcoded version. - litedram/gw2ddrphy : Fixed latencies and tested on Tang Primer 20K. [> Added -------- - soc/cores/video : Added low resolution video modes. - interconnect : Added initial AvalonMM support. - soc/interconnect/packet : Avoided bypass of dispatcher with a single slave. - build/add_period_constraints : Improved generic platform and simplify specific platforms. - gen/fhdl/verilog : Added parameter to avoid register initialization (required for ASIC). - litedram : Added clamshell topology support. - stream/Pipeline : Added dynamic pipeline creation capability. - build/xilinx/vivado : Added project commands to allow adding commands just after project creation. - soc/software : Moved helpers to hw/common.h. - tools/litex_json2dts_linux : Added sys_clk to device tree and fixed dts warning. - tools/litex_json2dts_zephyr : Added LiteSD defines. - build/yosys : Added quiet capability. - build/efinix : Improved Titanium support (PLL, DRIVE_STRENGTH, SLEW). - build/openfpgaloader : Added -fpga-part and -index-chain support. - soc/add_spi_flash : Added software_debug support. - software/liblitespi : Added read_id support. - litex_boards : Added QMtech XC7K325T, VCU128, SITLINV_STVL7325_V2, Enclustra XU8/PE3 support. - liteeth : Added Ultrascale+ GTY/GTH SGMII/1000BaseX PHYs. - soc/add_pcie : Added msi_type parameter to select MSI, MSI-Multi-Vector or MSI-X. - soc/add_pcie : Added msi_width parameter to select MSI width. - litepcie : Added 7-Series MSI-X capability/integration. - liteiclink : Improved GTH3/GTH4 support and similarity with Wizard's generated code. - liteeth_gen : Added SGMII/1000BaseX PHYs support. - litesata/dma : Added multi-sector support. - liteeth/mac : Added TX Slots write-only mode for improved resource usage when software does not read buffer. - liteeth/core : Added DHCP support for CPU-less hardware stack. - liteeth/core/icmp : Added fifo_depth parameter on LiteEthICMPEcho. - gen/fhdl/verilog : Improved signal sort by name instead of duid to improve reproducibility. - litedram/frontend/dma : Added last generation on end of DMA for LiteDRAMDMAReader. - litepcie/frontend/dma : Added optional integrated data-width converter and data_width parameters to simplify integration/user logic. - soc/add_uartbone/sata/sdcard : Added support for multiple instances in gateware as for the other cores. - liteeth_gen : Added raw UDP port support. - build/vivado : Added .dcp generation also after synthesis and placement. - gen: : Added initial LiteXContext to easily get build properties (platform, device, toolchain, etc...) - litepcie/endpoint/tlp : Added optional Configuration/PTM TLP support to Packetizer/Depacketizer. - liteth/arp : Added proper multi-entries ARP table. - liteiclink/serdes : Added tx/rx_clk sharing capabilities on Xilinx transceivers. - soc/cores/spi : Added new SPIMMAP core allowing SPI accesses through MMAP. - soc/interconnect/stream : Added pipe_valid/pipe_ready parameters to BufferizeEndpoints. - soc/cores/clock : Added initial GW5A support. - build/efinix : Added initial EfinixDDROutput/Input and simplified IOs exclusion. - soc/interconnect : Improved DMA Bus to use the same Bus Standard than the CPU DMA Bus. - liteeth/phy : Added Artix7 2500BASE-X PHY. - liteeth/phy : Added Gowin Arora V RGMII PHY (GW5RGMII). - liteeth/phy : Added Titanium RGMII PHY (Tested with Ti60 F225 + RGMII adapter board). - build/io : Added ClkInput/Ouput IO abstraction to simplify some Efinix designs. [> Changed ---------- - litex/gen : Added local version of genlib.cdc/misc to better decouple with Migen and prepare Amaranth's compat use. - soc/add_uartbone : Renamed name parameter to uart_name (for consistency with other cores). [> 2023.04, released on May 8th 2023 ------------------------------------ [> Fixed -------- - build/xilinx/vivado : Fixed Verilog include path. - builder/meson : Fixed version comparison. - liblitedram : Fixed write leveling with x4 modules. - integration/soc : Fixed alignment of origin on size. - litex_sim : Fixed ram_init. - libbase/i2c : Fixed various issues. - integration/soc : Fixed/Removed soc_region_cls workaround. - cores/gpio : Fixed IRQ generation. - litex_sim : Fixed --with-etherbone. - build/efinix : Fixed iface.py execution order. - cpu/Vex/NaxRiscv : Fixed IRQ numbering (0 reserved). - cpu/rocket : Fixed compilation with newer binutils. - cpu/soc : Fixed CPU IRQ reservation. - litepcie/software : Fixed compilation with DMA_CHECK_DATA commented. - litedram/dma : Fixed rdata connection (omit list update since LiteX AXI changes). - litepcie/US(P) : Fixed possible MSI deadlock. - cores/usb_ohci : Fixed build issue (usb_clk_freq wrapped as int). [> Added -------- - clock/intel : Added StratixVPLL. - cores/dma : Added FIFO on WishboneDMAReader to pipeline reads and allow bursting. - liblitedram : Improved SPD read with sdram_read_spd function. - bios/liblitedram : Added utils and used them to print memory sizes. - build/parser : Added a method to search default value for an argument. - litex_setup : Added Arch Linux RISC-V/OR1K/POWER-PC GCC toolchain install. - cores/pwm : Added reset signal (to allow external reset/synchronization). - cpu/cva6 : Updated. - cores/prbs : Improved timings. - litex_sim : Allowed enabling SDRAM BIST. - liblitedram : Refactored BIST functions and added sdram_hw_test. - soc/software : Added extern C (required to link with cpp code). - cpu/VexRiscv-SMP : Avoided silent generation failure. - cores/spi_flash : Added Ultrascale support. - clock/gowin_gw1n : Fixed simulation warnings. - liblitedram : Various improvements/cleanups. - cpu/Naxriscv : Exposed FPU parameter. - cores/xadc : Refactored/Cleaned up. - cores/dna : Added initial Ultrascale(+) support and reduced default clk_divider to 2. - cores/usb_ohci : Added support for multiple ports. - litex_cli : Added binary support for register dump. - cpu/NaxRiscv : Enabled FPU in crt0.S. - core/icap : Added initial Ultrascale(+) support and clk_divider parameter. - litex_sim : Added initial video support. - soc/add_video : Added framebuffer region definition. - litex_term : Avoided use of multiprocessing. - cores/esc : Added initial ESC core with DSHOT 150/300/600 support. - litex_json2dts : Allowed/Prepared Rocket support and made it more generic. - gen/common : Added Open/Unsigned/Signed signal definition and updated cores to use it. - global : Added initial list of sponsors/partners. - build/xilinx : Improved Xilinx US/US+ support. - build/platform : Added get_bitstream_extension method. - cpu/VexRiscvSMP : Added standard variant. - cpu/cva6 : Added 32-bit variant support and various improvements. - clock/gowin : Added GW2AR support. - build/efinix : Added option to select active/passive SPI mode. - cores/bitbang : Added documentation. - litex_term : Improved connection setup. - clock/gowin : Improved VCO config computation and added CLKOUTP/CLKOUTD/CLKOUTD3 support. - cpu/rocket : Reworked variants. - liblitesdcard : Avoided use of stop transmission for writes when only one block. - installation : Simplified/Improved ci.yml/MANIFEST.in/setup.py. - cores/pwm : Added MultiChannelPWM support. - soc/add_pcie : Exposed more DMA parameters. - litepcie/dma : Improved LitePCIeDMAStatus timings. - litepcie_gen : Exposed 64-bit support. - litepcie/dma : Better configuration decoupling between DMAWriter/Reader. - litepcie/dma : Allowed software to get DMA status. - litepcie/phy : Replaced Xilinx generated core on 7-series Verilog with Migen/LiteX code. - litepcie/msi : Improved MSI filtering. - litepcie_gen : Added MSI rate limiting on Ultrascale(+) to avoid stall issues. - liteiclink/prbs : Improved PRBS RX timings. - liteiclink/gty/gth : Added power-down signal on GTYQuadPLL and GTHQuadPLL. - litelclink/gty/gth : Integrated 7-series improvements. - litelclink/gty/gth : Added DRP interface on QuadPLL. - litedram/bist : Ensured proper completion of writes. - litedram/bist : Replicated data for large data-width. - litedram/ci : Allowed tests to run in parallel. - litedram/gw2ddrphy : Improvements to remove warnings in simulation. - liblitespi/spiflash : Add erasee and write functions. - liblitespi/Spiflash : Add write from sdcard file function. [> Changed ---------- - builder/export : Added soc-csv/-json/--svd arguments (in addition to csr-xy). - litepcie/phy : Retained only Gen3/4 support and removed Gen2. [> 2022.12, released on January 2th 2023 ---------------------------------------- [> Fixed -------- - bios : Fix missing CONFIG_BIOS_NO_DELAYS update. - axi/AXIDownConverter : Fix unaligned accesses. - cpu/rocket : Fix fulld/fullq variants typos. - cores/video : Fix red/blue channel swap (and apply similar changes to litex_boards). - software/demo : Fix compilation with Nix. - cpu/cv32e41p : Fix IRQs. - interconnect/csr : Allow CSR collection at the top-level. - interconnect/csr : Fix CSR with 64-bit bus width. - build/sim : Disable more useless warnings (-Wno-COMBDLY and -Wno-CASEINCOMPLETE). - intel : Fix constraints issues preventing the build with some boards/versions. - axi/axi_lite : Fix combinatorial loop on ax.valid/ax.ready. - soc/cores/video/VideoS7GTPHDMIPHY : Fix typo. - integration/export : Fix CSR base address definition when with_csr_base_define=False. [> Added -------- - soc : Add new "x" (executable) mode to SoCRegion. - cpu/NaxRiscv : Update to latest and add parameters. - soc : Propagate address_width on dynamically created interfaces. - get_mem_data : Add data_width support. - cores/dma : Allow defining ready behavior on idle. - axi : Improvements/Simplifications. - axi_stream : Improvements/Simplifications. - yosys_nextpnr : Add flow3 option to abc9 mode. - yosys_nextpnr : Refactor args. - vivado : Allow directive configuration. - jtag : Add Efinix JTAG support. - clock/intel : Improve pll calculation. - stream/ClockDomainCrossing : Expose buffered parameter. - tools/remote : Add Etherbone packets retransmisson. - build : Add VHDL2VConverter to simplify GHDL->Verilog conversion. - cpu/microwatt : Switch to VHDL2VConverter. - cpu/neorv32 : Switch to VHDL2VConverter. - axi : Differentiate AXI3/AXI4. - stream/Monitor : Add packet count and add reset/latch control from logic. - spi : Create spi directory and integrate SPIBone + improvements. - interconnect/csr : Add optional fixed CSR mapping. - fhdl/verilog : Improve code presentation/attribute generation. - gen/common : Add new LiteXModule to simplify user designs and avoid some Migen common issues. - soc/SoCBusHandler : Integrate interconnect code to simplify reuse. - gen/common : Add reduction functions. - vhd2v : Use GHDL directly (Instead of GHDL + Yosys). - cpu/openc906 : Update, add more peripherals to mem_map and add debug variant. - soc/software/i2c : Add non 8bit i2c mem address support. - gen/fhdl : Add LiteXHierarchyExplorer to generate SoC hierarchy. - gen/fhd : Add timescale generation. - build : Add LitexArgumentParser to customize/simplify argument parsing. - json2renode : Update. - logging : Allow logging level to be configured from user scripts. - soc/cores/cpu : Allow enabling/disabling reset address check. - integration/export : Directly generate extract/replace mask from Python. - cpu/zync7000 : Add axi_gp_slave support. [> Changed ---------- - ci : Bump to Ubutu 22.04. - soc_core : Move add_interrupt/add_wb_master/add_wb_slave/register_mem/register_rom to compat. - software : Do not build software as PIE. - ci : Add microwatt/neorv32 test + requirements (GHDL). - ci : Switch GCC toolchain installs to distro install. [> 2022.08, released on September 12th 2022 ------------------------------------------- [> Fixed -------- - cpu/vexriscv: Fix compilation with new binutils. - soc/LiteXSocArgumentParser: Fix --cpu-type parsing. - litex_sim: Fix --with-ethernet. - liblitesdcard: Fix SDCard initialization corner cases. - liblitedram: Enable sdram_init/mr_write for SDRAM. - export/get_memory_x: Replace SPIFlash with ROM. - soc/cores/video: Fix operation with some monitors (set data to 0 during blanking). - tools/remote/comm_usb: Fix multi-word reads/writes. - build/lattice/oxide: Fix ES posfix on device name. - interconnect/axi: Fix AXIArbiter corner case. - litex_server/client: Fix remapping over CommPCIe. - LitePCIe: Fix LiteUART support with multi-boards. [> Added -------- - litex_setup: Add -tag support for install/update. - tools: Add initial LiteX standalone SoC generator. - cores/ram: Add Xilinx's FIFO_SYNC_MACRO equivalent. - LitePCIe: Always use 24-bit depth fields on LitePCIeBuffering to simplify software. - gen/fhdl: Integrate Migen namer to give us more flexibility. - fhdl/memory: Prefix memory files with build name to simplify reuse/integration. - cpu/rocket: Add more variants. - cores/video: Enable driving both + and - diff outs to compensate hardware issues. - build: Add intial OSFPGA Foedag/Raptor build backend. - cpu/cva5: Add initial CVA5 CPU support (ex Taiga). - LiteSATA: Add IRQ and Identify support. - clock/intel: Improve to find the best PLL config. - cpu/cva6: Add initial CVA6 CPU support (ex Ariane). - bios: Improve config flags. - tools: Add I2s/MMCM support to litex_json2dts_zephyr. - clock/gowin: Add GW2A support. - bios: Disable LTO (does not work in all cases, needs to be investigated). - CI: Test more RISC-V CPUs and OpenRisc CPUs in CI. - bios: Add CONFIG_NO_BOOT to allow disabling boot sequence. - export: Allow disabling CSR_BASE define in csr.h. - build/openocd: Update for compatibility with upstream OpenOCD. - cpu/openc906: Add initial OpenC906 support (open version of the Allwinner's D1 chip). - soc: Add automatic bridging between AXI <-> AXI-Lite <-> Wishbone. - soc: Add AXI-Full bus support. - interconnect: Add AXI DownConverted and Interconnect/Crossbar. - interconnect: Create axi directory and split code. - soc: Modify SoC finalization order for more flexibility. - soc: Add --bus-interconnect parameter to select interconect: shared/crossbar. - valentyusb: Package and install it with LiteX. - bios/mem_list: Align Mem Regions. - build: Introduce GenericToolchain to cleanup/simplify build backends. - soc/etherbone: Expose broadcast capability. - build/lattice: Add MCLK frequency support. - cpu/cva6: Add IRQ support. - cores/clock: Add manual placement support to ECP5PLL. - cores/leds: Add polarity support. - cpu/neorv32: Switch to new NeoRV32 LiteX Core Complex and add variants support. - cores/gpio: Add optional reset value. - litex_client: Add --host support for remote operation. - sim/verilator: Add jobs number support (to limit RAM usage with large SoCs/CPUs). - soc/SocBusHandler Add get_address_width method to simplify peripheral integration. - bios: Expose BIOS console parameters (to enable/disable history/autocomplete). - bios: Expose BIOS LTO configuration. - litex_json2renode: Update. - build: Introduce YosysNextPNRToolchain to cleanup/simplify Yosys support. - bios: Add buttons support/command. - litex_client: Add XADC/Identifier/Leds/Buttons support to GUI. - cpu/NaxRiscv: Update. - build/generic_platofrm: Add add_connector methode to allow extending connectors. - litex_server/client: Add initial information exchange between server/client. - LitePCIe: Improve 64-bit support. - interconnect/axi: Add missing optional signals. - interconnect/wishbone: Improve DownConverter efficiency. [> Changed ---------- - LiteX-Boards : Remove short import support on platforms/targets. - tools: Rename litex_gen to litex_periph_gen. - LiteX-Boards: Only generate SoC/Software headers when --build is set - Symbiflow: Rename to F4PGA. - mkmsscimg: Rename to crcfbigen. [> 2022.04, released on May 3th 2022 ------------------------------------ [> Fixed -------- - software/bios/mem_write: Fix write address increment. - software/liblitedram: Improve calibration corner case on 7-series (SDRAM_PHY_DELAY_JUMP). - software/liblitedram: Fix delay reconfiguration issue on ECP5/DDR3. - cores/jtag: Fix chain parameter on XilinxJTAG. - soc/arguments: Fix l2_size handling. - cpu/vexriscv_smp: Fix pbus_width when using direct LiteDRAM interface. - libbase/i2c/i2c_poll: Also check for write in i2c_scan (some chips are write only). - build/vivado: Fix timing constraints application on nets/ports. [> Added -------- - litex_setup: Add minimal/standard/full install configs. - soc/arguments: Improve default/help, add parser groups. - LiteSPI/phy: Simplify integration on targets. - openocd/stream: Simplify ECP5 JTAG-UART/JTAGBone use. - tools/litex_cli: Allow passing reg name to --read/--write. - soc/add_spi_sdcard: Allow optional Tristate (useful on ULX3S). - software/bios: Add new mem_cmd memory comparison command. - cpu/rocket: Increase IRQ lines to 8. - cpu/serv: Add MDU support. - cpu/marocchino: Add initial support. - cpu/eos_s3: Add LiteX BIOS/Bare Metal software support. - litex_sim: Add .json support for --rom/ram/sdram-init. - soc/add_uart: Allow multiple UARTs in the same design. - cores/cpu: Add out-of-tree support. - build/xilinx: Add initial Yosys/NextPnr support on Artix7 (and Zynq7000 with Artix7 fabric). - add_source: Add optional copy to gateware directory. - cores/jtag: Add initial JTAG-UART/JTAGBone Altera/Intel support. - LiteScope: Add Samplerate support. - cores/bitbang: Add optional I2C initialization by CPU. - libliteeth/tftp: Add blocksize support an increase to 1024 bytes (allow 64MB filesize). - soc/add_sdram: Make AXI integration more flexible (remove some specific Rocket hardcoding). - cpu/neorv32: Add initial support (RV32I, VHDL converted to Verilog through GHDL-Yosys-synth). - cpu/naxriscv: Add initial support (RV32IMA & RV64IMA, already able to run Linux). - interconnect/axi: Add AXI UpConverter. - soc/add_sdram: Allow data_width upconversion directly on AXI (avoid switching to Wishbone). - bios/memtest: Optimize memspeed loop for better accuracy. - build/sim: Allow custom modules to be in custom path. - build/OpenFPGA: Add initial OpenFPGA build backend (Currently targeting SOFA chips). - build/efinix: Add initial MIPI TX/RX support (and test on Trion/Titanium). - cores/video: VTG improvements to support more Video chips. - cores/xadc: Improve Zynq Ultrascale+ support. - LiteScope: Optimize waveform upload speed. - LitePCIe: Add LTSSM tracer capability to debug PCIe bringup issues. - cores/hyperbus: Refactor core and improve performances (Automatic burst detection). - cores/jtag: Add Zynq UltraScale+. - cores/ram: Add Ultrascale+ HBM2 wrapper. - litex_json2renode: Improve and add support for more CPUs. - cores/cpu: Add initial FireV support. - litex_cli: Add --csr-csv support and minimal GUI (based on DearPyGui). - litescope_cli: Add minimal GUI (based on DearPyGui). - build/gowin: Add powershell support. - LitePCIe: Add initial 64-bit addressing support (Only for 64-bit datapath for now). - software/bios: Add Main RAM test (when not pre-initialized). - build/trellis: Enable bitstream compression on ECP5 by default. - soc/add_etherbone: Increase buffer_depth to 16 (to improve etherbone bursting). - builder: Add get_bios_filename/get_bitstream_filename methods to simplify targets. - cpu/vexriscv_smp: Re-integrate Linux-on-LiteX−VexRiscv specific changes/mapping. - tools/litex_sim: Allow RAM/SDRAM initialization from .json files (similar to hardware). - soc/cpu: Expose optional CPU configuration parameters to users (ex VexRiscv-SMP/NaxRiscv). - soc: Improve logs. - build/Efinix: Add Atmel programmer. - stream/cdc: Add optional common reset. - LiteDRAM: Decouple DQ/DQS widths on S7DDRPHY. - cores/ws2812: Improve timings at low sys_clk_freq. - soc/builder: Add --no-compile (similar to --no-compile-gateware --no-compile-software). - software/demo: Add --mem parameter to allow compilation for execution in ROM/RAM. - cpu/naxrsicv: Add JTAG debug support. - cores/usb_fifo: Re-implement FT245PHYSYnchronous. - cores/jtag: Add JTAGBone/JTAG-UART support on Zynq/ZynqMP. - interconnect/sram: Add SRAM burst support. - liblitesata: Improve SATA init. - soc/cpu: Improve command line listing. - soc/cores/uart: Decouple data/address width on Stream2Wishbone. [> Changed ---------- - Fully deprecate SoCSDRAM/SPIFlash core (replaced by LiteSPI). - UART "bridge" name deprecated in favor of "crossover" (already supported). - "external" CPU class support deprecated (replaced by out-of-tree support). - lxterm/lxserver/lxsim short names deprecated (used long litex_xy names). - Deprecate JTAG-Atlantic support (Advantageously replaced by JTAG-UART). [> 2021.12, released on January 5th 2022 ---------------------------------------- [> Fixed -------- - software/linker: Fix initialized global variables. - build/xilinx: Fix Ultrascale SDROutput/Input. - cpu/rocket/crt0.s: Fix alignements. - core/video: Fix missing ClockDomainsRenamer in specific DRAM's width case. - mor1kx: Fix --cpu-type=None --with-ethernet case. - build/lattice: Fix LatticeiCE40SDROutputImpl. - soc/interconnect/axi: Fix 4KB bursts. [> Added -------- - integration/builder: Check if full software re-build is required when a CPU is used. - cores/clock: Add Gowin PLL support. - build/gowin: Add initial HyperRam support. - build/gowin: Add differential Input/Output support. - build/lattice: Add DDRTristate support. - cores/gpio: Add external Tristate support. - tools/json2dts: Make it more generic (now also used with OpenRisc/Mor1kx). - cpu/rocket: Add SMP support (up to quad-core). - software/bios/boot: Allow frame reception to time out (for litex_term auto-calibration). - tools/litex_term: Add automatic settings calibration and --safe mode. - build/quicklogic: Add initial support. - cores/icap/7-Series: Add register read capability. - cores/video: Add RGB565 support to VideoFrameBuffer. - soc: Raise custom SoCError Exception and disable traceback/exception. - soc/add_pcie: Automatically set Endpoint's endianness to PHY's endianness. - build/efinix: Add initial Trion and Titanium support. - fhdl/verilog: Cleanup/Simplify verilog generation. - fhdl/memory: Cleanup/Simplify and add support for Efinix case. - cpu/ibex: Add interrupt support. - tools/litex_client: Add --length parameter for MMAP read accesses. - software/bios/cpu: Add CPU tests in CI. - litex_sim/xgmii_ethernet: Improve models. - litex_setup: Cleanup/Simplify and switch to proper "--" commands (with retro-compat). - cores/jtag: Add ECP5 support. - cores/led: Add WS2812/NeoPixel core. - cpu/femtorv: Finish integration and add variants support. - cpu/eos-s3: Add initial support. - build/anlogic: Add initial support. - cpu/microwatt: Add Xilinx multiplier support. - cpu/vexriscv/cfu: Improve integration. - soc/interconnect: Add initial AHB support (AHB2Wishbone). - cpu/gowin_emcu: Add initial Gowin EMCU support. - cpu/zynq7000: Add initial BIOS/software support. - cpu/zynq7000: Add TCL support. - core/prbs: Add error behaviour configuration on saturation. - software/bios: Add write size option to mem_write cmd. - LitePCIe/phy: Cleanup 7-Series PHY integration. - LitePCIe/dma Add LitePCIeDMAStatus module. - LitePCIe/software: Improve kernel/user-space utilities. - LiteDRAM/litedram_gen: Improve ECP5 support. - LiteDRAM/phy: Add initial LPDDR5 support. - LiteDRAM/frontend: Refactor DRAM FIFO and add optional bypass mode. - LiteEth/core: Add 32-bit/64-bit datapath support. - LiteEth/phy: Add 10Gbps / Xilinx XGMII support. - LiteEth/phy: Add 1Gbps / Efinix RGMII support. - LiteSPI/phy: Simplify SDR/DDR PHYs. - LiteHyperBus: Add 16-bit support. [> Changed ---------- - software: Replace libbase with picolibc (new requirements: meson/ninja). - amaranth: Switch from nMigen to Amaranth HDL. [> 2021.08, released on September 15th 2021 ------------------------------------------- [> Fixed -------- - wishbone/UpConverter: Fix SEL propagation. - cores/i2s: Fix SYNC sampling. - BIOS/lib*: Fix GCC warnings. - cpu/software: Fix stack alignment issues. - cpu/blackparrot: Fix integration. - interconnect/axi: Fix valid signal in connect_to_pads for axi lite. - software/hw/common: Fix _csr_rd_buf/_csr_wr_buf for sizeof(buf[0]) < CSR_DW_BYTES case. - software/soc.h: Fix interoperability with assembly. - interconnect/stream: Fix n=1 case on Multiplexer/Demultiplexer. - interconnect/axi: Fix BURST_WRAP case on AXIBurst2Beat. - cpu/VexRiscv-SMP: Fix build without a memory bus. - cpu/software: Fix CLANG detection. - build/software: Force a fresh software build when cpu-type/variant is changed. - cores/uart: Fix TX reset level. - BIOS: Fix PHDR link error. - BIOS: Fix build-id link error. - LiteDRAM: Fix Artix7/DDR3 calibraiton at low speed. [> Added -------- - cores/video: Add 7-Series HDMI PHY over GTPs. - cores/jtagbone: Allow JTAG chain selection. - programmer: Add iCESugar programmer. - cpu/vexriscv: Add CFU support. - soc/controller: Add separate SoC/CPU reset fields. - BIOS/liblitedram: Add debug capabilities, minor improvements. - cpu/femtoRV: Add initial FemtoRV support. - cores/uart: Cleaned-up, Add optional TX-Flush. - cores/usb_ohci: Add initial SpinalHDL's USB OHCI support (integrated in Linux-on-LiteX-Vexriscv). - stream: Add Gate Module. - soc/builder: Allow linking external software packages. - soc/software: Allow registering init functions. - cores/ram: Add init support to Nexus LRAM. - cores/spi: Add Manual CS Mode for bulk transfers. - cores/VexRiscv-SMP: Make [ID]TLB size configurable. - dts: Add GPIO IRQ support. - programmer/DFUProg: Allow to specify alt interace and to not reboot. - cores/clock/ecp5: Add dynamic phase adjustment signals. - tools/litex_sim: Mode SDRAM settings to LiteDRAM's DFI model. - build/gowin: Add AsyncResetSynchronizer/DDRInput/DDROutput implementations. - build/gowin: Add On-Chip-Oscillator support. - build/gowin: Add initial timing constraints support. - build/attr_translate: Simplify/Cleanup. - programmer/OpenFPGALoader: Add cable and freq options. - interconnect/packet: Improve PacketFIFO to handle payload/param separately. - clock/ecp5: Add 4-output support. - LiteSPI: Simplified/Cleaned-up, new MMAP architecture, applied to LiteX-Boards. - soc: Add LiteSPI integration code. - LitePCIe: DMA/Controller Simplified/Cleaned-up. - soc/add_cpu: Add memory mapping overrides to build log and make an exception for the CPUNone case. - programmer: Add ECPprogProgrammer. - soc/software: Add Random access option to memtest. - tools: Add Renode generator script. - tools: Add Zephyr DTS generator script. - build/io: Add DDRTristate. - cpu/VexRiscv: Restructure config flags for dcache/icache presence. - litex_sim: Improve RAM/SDRAM integration and make it closer to LiteX-Boards targets. - build/sim: Add ODDR/IDDR/DDRSTristate simulation models. - litex_sim: Add SPIFlash support. - LiteSPI: Add DDR support and integration in LiteX (rate=1:1, 1:2). - build/Vivado: Make pre_synthesis/placement/routing commands similar to platform_commands. - LiteDRAM: Refactor C code generator. - LiteDRAM: Improve LPDDR4 support. - LiteDRAM: Reduce ECC granularity. [> Changed ---------- - soc_core: --integrated-rom-file argument renamed to --integrated-rom-init. [> 2021.04, released on May 3th 2021 ------------------------------------ [> Fixed -------- - litex_term: Fix Windows/OS-X support. - soc/USB-ACM: Fix reset clock domain. - litex_json2dts: Various fixes/improvements. - cores/clock: Fix US(P)IDELAYCTRL reset sequence. - cpu/Vexriscv: Fix Lite variant ABI (has multiplier so can use rv32im). - BIOS: Fix various compiler warnings. - LiteSDCard: Fix various issues, enable multiblock reads/writes and improve performance. - CSR: Fix address wrapping within a CSRBank. - soc/add_etherbone: Fix UDPIPCore clock domain. - stream/Gearbox: Fix some un-supported cases. - cpu/VexRiscv-SMP: Fix build on Intel/Altera devices with specific RAM implementation. - timer: Fix AutoDoc. - Microwatt/Ethernet: Fix build. - soc/software: Link with compiler instead of ld. [> Added -------- - Lattice-NX: Allow up to 320KB RAMs. - BIOS: Allow compilation with UART disabled. - litex_json2dts: Simplify/Improve and allow VexRiscv/Mor1kx support. - BIOS/i2c: Improve cmd_i2c. - BIOS/liblitedram: Various improvements for DDR4/LPDDR. - cores/Timer: Add initial unit test. - cores: Add initial JTAGBone support on Xilinx FPGAs. - litex_term: Improve JTAG-UART support. - litex_server: Add JTAGBone support. - VexRiscv-SMP: Add --without-out-of-order and --with-wishbone-memory capabilities. - BIOS: Allow specify TRIPLE with LITEX_ENV_CC_TRIPLE. - litex_client: Add simple --read/--write support. - OpenFPGALoader: Add flash method. - litex_sim: Add GTKWave savefile generator. - litex_term: Add nios2-terminal support. - cpu/mor1kx: Add initial SMP support. - interconnect/axi: Add tkeep support. - cores/gpio: Add IRQ support to GPIOIn. - cpu: Add initial lowRISC's Ibex support. - build/xilinx/Vivado: Allow tcl script to be added as ip. - cores/uart: Rewrite PHYs to reduce resource usage and improve readability. - cores/pwm: Add configurable default enable/width/period values. - cores/leds: Add optional dimming (through PWM). - soc/add_pcie: Allow disabling MSI when not required. - export/svd: Add constants to SVD export. - BIOS: Allow dynamic Ethernet IP address. - BIOS: Add boot command to boot from memory. - cores: Add simple VideoOut core with Terminal, ColorBards, Framebuffer + various PHYs (VGA, DVI, HDMI, etc...). - csr/EventSourceProcess: Add rising edge support and edge selection. - soc/integration: Cleanup/Simplify soc_core/builder. - soc/integrated_rom: Add automatic BIOS ROM resize to minimize blockram usage and improve flexibility. - interconnect/axi: Add AXILite Clock Domain Crossing. - cores/xadc: Add Ultrascale support. - soc/add_ethernet: Allow nrxslots/ntxslots configuration. - cpu/VexRiscv-SMP: Integrate FPU/RVC support. - soc/add_csr: Add auto-allocation mode and switch to it in LiteX's code base. - soc/BIOS: Add method to check BIOS requirements during the build and improve error message when not satisfied. - LiteEth: Add initial timestamping support. - litex_client: Add optional filter to --regs. - LiteDRAM: Add LPDDR4 support. - BIOS/netboot: Allow specifying .json file. - cores/clock: Add initial Gowin GW1N PLL support. - LiteSDCard: Add IRQ support. [> Changed ---------- - platforms/targets: Move all platforms/targets to https://github.com/litex-hub/litex-boards. - litex_term: Remove flashing capability. - cores/uart: Disable dynamic baudrate by default (Unused and save resources). [> 2020.12, released on December 30th 2020 ------------------------------------------ [> Fixed -------- - fix SDCard writes. - fix crt0 .data initialize on SERV/Minerva. - fix Zynq7000 AXI HP Slave integration. [> Added -------- - Wishbone2CSR: Add registered version and use it on system with SDRAM. - litex_json2dts: Add Mor1kx DTS generation support. - Build: Add initial Radiant support for NX FPGA family. - SoC: Allow ROM to be optionally writable (for contents overwrite over UARTBone/Etherbone). - LiteSDCard: Improve BIOS support. - UARTBone: Add clock domain support. - Clocking: Uniformize reset on iCE40PLL/ECP5PLL. - LiteDRAM: Improve calibration and add BIOS debug commands. - Clocking: Add initial Ultrascale+ support. - Sim: Allow dynamic enable/disable of tracing. - BIOS: Improve memtest and report. - BIOS: Rename/reorganize commands. - litex_server: Simplify usage with PCIe and add debug parameter. - LitePCIe: Add Ultrascale(+) support up to Gen3 X16. - LiteSATA: Add BIOS/Boot integration. - Add litex_cli to provides common RemoteClient functions: get identifier, dump regs, etc... - LiteDRAM: Simplify BIST integration. - Toolchains/Programmers: Improve checks/error reporting. - BIOS: add leds command. - SoC: Do a full reset of the SoC on reboot (not only the CPU). - Etherbone: Improve efficiency/performance. - LiteDRAM: Improve DDR4/DDR3 calibration. - Build: Add initial Oxide support for NX FPGA family. - Clock/RAM: Reorganize for better modularity. - SPI-OPI: Various improvements for Betrusted. - litex_json2dts: Improvements to use it with mor1kx and VexRiscv-SMP. - Microwatt: Add IRQ support. - BIOS: Add i2c_scan command. - Builder: Simplify Documentation generation with --doc args on targets. - CSR: Add documentation to EventManager registers. - BIOS: Allow disabling timestamp for reproducible builds. - Symbiflow: Remove workarounds on targets. - litex_server: Simplify use on PCIe, allow direct CommXY use in scripts to bypass litex_server. - Zynq7000: Improve PS7 configuration support (now supporting .xci/preset/dict) - CV32E40P: Improve OBI efficiency. - litex_term: Improve upload speed with CRC check enabled, deprecate --no-crc (no longer useful). - BIOS: Add mem_list command to list available memory and use mem_xy commands on them. - litex_term: Add Crossover and JTAG_UART support. - Software: Add minimal bare metal demo app. - UART: Add Crossover+Bridge support. - VexRiscv-SMP: Integrate AES support. - LitePCIe: Allow AXI mastering from FPGA (AXI-Lite and Full). - mor1kx: Add standard+fpu and linux+fpu variants. [> Changed ---------- - BIOS: commands have been renamed/reorganized. - LiteDRAM: rdcmdphase/wrcmdphase no longer exposed. - CSR: change default csr_data_width from 8 to 32. [> 2020.08, released on August 7th 2020 --------------------------------------- [> Fixed -------- - Fix flush_cpu_icache on VexRiscv. - Fix `.data` section placed in rom (#566) [> Added -------- - Properly integrate Minerva CPU. - Add nMigen dependency. - Pluggable CPUs. - BIOS history, autocomplete. - Improve boards's programmers. - Add Microwatt CPU support (with GHDL-Yosys-plugin support for FOSS toolchains). - Speedup Memtest using an LFSR. - Add LedChaser on boards. - Improve WishboneBridge. - Improve Diamond constraints. - Use InterconnectPointToPoint when 1 master,1 slave and no address translation. - Add CV32E40P CPU support (ex RI5CY). - JTAG UART with uart_name=jtag_uart (validated on Spartan6, 7-Series, Ultrascale(+)). - Add Symbiflow experimental support on Arty. - Add SDCard (SPI and SD modes) boot from FAT/exFAT filesystems with FatFs. - Simplify boot with boot.json configuration file. - Revert to a single crt0 (avoid ctr/xip variants). - Add otional DMA bus for Cache Coherency on CPU(s) with DMA/Cache Coherency interface. - Add AXI-Lite bus standard support. - Add VexRiscv SMP CPU support. [> Changed ---------- - Add --build --load arguments to targets. - Deprecate soc.interconnect.wishbone.UpConverter (will be rewritten if useful). - Deprecate soc.interconnect.wishbone.CSRBank (Does not seem to be used by anyone). - Move soc.interconnect.wishbone2csr.WB2CSR to soc.interconnect.wishbone.Wishbone2CSR. - Move soc.interconnect.wishbonebridge.WishboneStreamingBridge to soc.cores.uart.Stream2Wishbone. - Rename --gateware-toolchain target parameter to --toolchain. - Integrate Zynq's PS7 as a regular CPU (zynq7000) and deprecate SoCZynq. [> 2020.04, released on April 28th, 2020 ---------------------------------------- [> Description -------------- First release of LiteX and the ecosystem of cores! LiteX is a Migen/MiSoC based Core/SoC builder that provides the infrastructure to easily create Cores/SoCs (with or without CPU). The common components of a SoC are provided directly: - Buses and Streams (Wishbone, AXI, Avalon-ST) - Interconnect - Common cores (RAM, ROM, Timer, UART, etc...) - CPU wrappers/integration - etc... And SoC creation capabilities can be greatly extended with the ecosystem of LiteX cores (DRAM, PCIe, Ethernet, SATA, etc...) that can be integrated/simulated/build easily with LiteX. It also provides build backends for open-source and vendors toolchains. [> Fixed -------- - NA [> Added -------- - NA [> Changed ---------- - https://github.com/enjoy-digital/litex/pull/399: Converting LiteX to use Python modules.