Updating submodules.

 * litedram changed from de55a8e to d62fd24
    *   d62fd24 - Merge pull request #201 from antmicro/jboc/spd-read <enjoy-digital>
    |\
    | * 4233f86 - modules/spd: save SPD data in SDRAMModule to allow for runtime verification <Jędrzej Boczar>
    * | f23cb80 - litedram_gen: revert builder.build(..., regular_comb=False). <Florent Kermarrec>
    * | d1db115 - litedram_gen: review/simplify #197. <Florent Kermarrec>
    * |   a8e281f - Merge pull request #197 from ozbenh/standalone-sim <enjoy-digital>
    |\ \
    | * | d0f0c94 - phy/model: Don't generate empty mem_*.init files <Benjamin Herrenschmidt>
    | * | b8d6da5 - gen: Allow generation of a standalone sim model <Benjamin Herrenschmidt>
    * | |   83b9a1d - Merge pull request #199 from antmicro/jboc/spd-read <enjoy-digital>
    |\ \ \
    | |/ /
    |/| /
    | |/
    | * cbe91bc - modules: add function for parsing SPD EEPROM dumps from BIOS firmware <Jędrzej Boczar>
    * | 639a31f - test/test_timing: update test_txxd_controller. <Florent Kermarrec>
    * | 3c1ab76 - litedram/common/tXXDController: only set reset to 1 when txxd is None. <Florent Kermarrec>
    |/
    *   e95af3f - Merge pull request #195 from enjoy-digital/bios-libs <enjoy-digital>
    |\
    | * fe48a92 - test/reference: update. <Florent Kermarrec>
    | * c30910a - init: generate DFII_CONTROL flags in sdram_phy.h instead of defining them in the BIOS. <Florent Kermarrec>
    |/
    * 5078b19 - core/crossbar: remove retro-compat > 6 months old. <Florent Kermarrec>
    * 3b105d5 - modules: fix SDRAMRegisteredModule. <Florent Kermarrec>
    *   b2a5685 - Merge pull request #189 from daveshah1/ddr4_rdimm_init <enjoy-digital>
    |\
    | * 70054ba - Add support for DDR4 RDIMMs <David Shah>
    * | 7ae4ad5 - modules: add SDR/DDR/DDR2/DDR3/DDR4 SDRAMModule (and Registered versions). <Florent Kermarrec>
    * | 1f7d9eb - litedram_gen: pass FPGA speedgrade to iodelay_pll. <Florent Kermarrec>
    * | f4871b9 - litedram_gen: use default settings on wb_bus. <Florent Kermarrec>
    * | 6fb8396 - litedram_gen: remove csr_base (no longer needed since CPUNone type will automatically set csr mapping to 0x00000000) and create a use bus with the same address_width as the main bus of the SoC. <Florent Kermarrec>
    * | 94c215e - litedram_gen: review/simplify #193, always add ddrctrl. <Florent Kermarrec>
    * |   f036ec2 - Merge pull request #193 from ozbenh/standalone-cores <enjoy-digital>
    |\ \
    | * | 04717b4 - gen: Rename standalone core wishbone <Benjamin Herrenschmidt>
    | * | b0838f7 - gen: Add option to specify CSR alignment <Benjamin Herrenschmidt>
    | * | d5a03b3 - gen: Add option to generate DDRCTL on standalone cores <Benjamin Herrenschmidt>
    | * | efad6b3 - gen: Add option to specify CSR base for standalone cores <Benjamin Herrenschmidt>
    | * | c91cbb5 - gen: Remove obsolete bus_expose config option <Benjamin Herrenschmidt>
    |/ /
    * | 4e539ad - litedram_gen: switch to SoCCore. <Florent Kermarrec>
    * | ac33d29 - litedram_gen: simplify and expose bus when CPU is set to None. <Florent Kermarrec>
    * | fe47838 - litedram_gen: expose a Bus Slave port instead of a CSR port. <Florent Kermarrec>
    * | 52b49fb - test/reference: update. <Florent Kermarrec>
    * | 52ca393 - modules: add MT41J512M16/MT41K512M16. <Florent Kermarrec>
    * | 589957f - phy: extend Bitslip capability to 2 sys_clk cycles. <Florent Kermarrec>
    * | 5c0231d - common/BitSlip: add cycles parameter to extend bitstlip to multiple system clock cycles. <Florent Kermarrec>
    * | ed0810a - gen: Optionally pass cpu_variant from YAML to SoC <Benjamin Herrenschmidt>
    |/
    *   dfe6f90 - Merge pull request #188 from daveshah1/ddr4_dimm_x4 <enjoy-digital>
    |\
    | * 5b4381b - usddrphy: Support for x4 chip based DIMMs <David Shah>
    * |   9f136c0 - Merge pull request #187 from daveshah1/add_MTA18ASF2G72PZ <enjoy-digital>
    |\ \
    | |/
    |/|
    | * 97f0a37 - modules: Add MTA18ASF2G72PZ DDR4 RDIMM <David Shah>
    |/
    * 9a2d3f0 - common: add PHYPadsReducer to only use specific DRAM modules. <Florent Kermarrec>
    * 20a849c - test/reference: update ddr4_init.h <Florent Kermarrec>
    *   cec3a99 - Merge pull request #181 from antmicro/jboc/eeprom-timings <enjoy-digital>
    |\
    | * 312bce2 - modules: pass rate automatically when creating module from SPD data <Jędrzej Boczar>
    | * 07bbd79 - modules: update existsing SO-DIMM timings based on SPD data <Jędrzej Boczar>
    | * cf83ac6 - test: improve SPD tests of Micron DDR3 SO-DIMM modules <Jędrzej Boczar>
    | * 854a614 - modules: fix calculations of speedgrade from tck in SPD data <Jędrzej Boczar>
    | * c744204 - modules: fix nrows in MT8KTF51264 <Jędrzej Boczar>
    | * 3980e06 - modules: add option to load module parameters from SPD data <Jędrzej Boczar>
    * | 48c2fc2 - phy: simplify/improve dqs preamble/postamble. <Florent Kermarrec>
    * | eaf0691 - phy/ecp5ddrphy: simplify, working with dqs preamble/postamble. <Florent Kermarrec>
    * | 12a017f - phy/ecp5ddrphy: simplify/cleanup. <Florent Kermarrec>
    * | 62915cd - phy: rework BitSlip to simplify integration, add DQSPattern module. <Florent Kermarrec>
    * | 9ff9e82 - phy/usddrphy: move pads.ten control to control block. <Florent Kermarrec>
    * | 91a9a2a - phy/ecp5ddrphy: fix dqs preamble/postamble control. (make it similar to 7-series/Ultrascale). <Florent Kermarrec>
    * | 5d29686 - phy/s7ddrphy/usddrphy: more compact write dqs postamble/preamble control path. <Florent Kermarrec>
    * | 8d0e7f6 - phy/usddrphy: simplify/cleanup write control path/dqs postamble/preamble control path. <Florent Kermarrec>
    * | 57b16c2 - phy/usddrphy: simplify/cleanup write control path, add DQS Pre/Postamble support. <Florent Kermarrec>
    * | 1462a43 - phy/usddrphy: cleanup/simplify read control path. <Florent Kermarrec>
    * | cd671f9 - phy/s7ddrphy: cleanup/simplify read control path. <Florent Kermarrec>
    * | d061e60 - test/reference: update. <Florent Kermarrec>
    * | 45a03df - phy/init: add phytype to PhySettings and export more parameters to C header to simplify software. <Florent Kermarrec>
    * | 2df9004 - init: improve ident. <Florent Kermarrec>
    * | eca7fc2 - phy/ecp5ddrphy: remove Bitslip from comment (no longer present). <Florent Kermarrec>
    * | f4f2948 - phy/ecpddrphy: remove Bitslip (not used and redundant with dqs_read) and use BitSlip software control to move dqs_read. <Florent Kermarrec>
    * | e2b4c2b - phy/ecp5ddrphy: cosmetics. <Florent Kermarrec>
    |/
    * f68f1dd - phy/ecp5ddrphy/control: cleanup/simplify and document (no functional changes). <Florent Kermarrec>
    * fdf7c76 - phy/control: cleanup/simplify (no functional changes). <Florent Kermarrec>
    * a767618 - phy: improve flow control readability (add separators between Read/Write/Write DQS Postamble/Preamble parts). <Florent Kermarrec>

 * liteeth changed from 705003e to 0feed17
    * 0feed17 - phy/gmii/CRG: add BUFG on RX and do the TX clock Mux with combinatorial logic (from @skiphansen initial work). <Florent Kermarrec>
    * 53c9eb9 - core/ip: move mcase_oui/ip_mask definition to common and set target_mac with NextValue. <Florent Kermarrec>
    *   58e1681 - Merge pull request #41 from shuffle2/mcast <enjoy-digital>
    |\
    | * 6d00ec1 - iptx: support multicast mac and bypass arp table <Shawn Hoffman>
    * | 8afdec9 - phy/ecp5rgmii: review/simplify inband_status integration. <Florent Kermarrec>
    * |   55af430 - Merge pull request #40 from shuffle2/master <enjoy-digital>
    |\ \
    | |/
    |/|
    | * 26c4e41 - ecp5rgmii: enable reading inband PHY_status <Shawn Hoffman>
    |/
    * dc67e6d - phy/ecp5rgmii: use DDROutput/DDRInput now available for ECP5. <Florent Kermarrec>

 * litepcie changed from 586ef78 to b0e8383
    * b0e8383 - frontend/dma/LitePCIeDMAReader: immediately return to IDLE state when disabled. <Florent Kermarrec>
    *   4e333cb - Merge pull request #29 from sergachev/master <enjoy-digital>
    |\
    | * 8192494 - kernel: remove unnecessary call to pci_release_regions() on device remove <Ilia Sergachev>
    |/
    * c2fd143 - phy/s7pciephy: expose disable_constraints parameter to use_external_hard_ip. <Florent Kermarrec>
    * 6049a69 - litepcie_gen: add optional Sphinx/Html doc generation with --doc. <Florent Kermarrec>
    * 6bb89af - phy/s7pciehy: disable constraints generated from the .xci and use our owns. <Florent Kermarrec>
    *   ef7d40e - Merge pull request #28 from sergachev/master <enjoy-digital>
    |\
    | * 3eb2b86 - test_dma: remove unused imports and variables, fix mistypes <Ilia Sergachev>
    |/
    *   9a3ada5 - Merge pull request #27 from sergachev/master <enjoy-digital>
    |\
    | * e637090 - dma: fix another couple of mistypes <Ilia Sergachev>
    | * 4c4e3bf - dma: fix mistypes in comments <Ilia Sergachev>
    |/
    * 3ca6e38 - frontend/dma/monitor: reduce count_width from 32-bit (default) to 16-bit. <Florent Kermarrec>
    * 22faa07 - litepcie_gen: add pcie_data_width support. <Florent Kermarrec>
    *   96a6cdc - Merge pull request #25 from sergachev/master <enjoy-digital>
    |\
    | * 5804b43 - software: fix definitions <Ilia Sergachev>
    * 0496daf - litepcie_gen: add buffers on DMA sink/source to ensure data are clocked on LitePCIe interface and ease integration. <Florent Kermarrec>
    * 7818ace - frontend/dma: fix level CSRStatus size (+1). <Florent Kermarrec>
    * a85b1d7 - tlp/controller: expose cmp_bufs_buffered parameter. <Florent Kermarrec>
    * 264d7f3 - frontend/dma: allow asymetric writer/reader buffering depths. <Florent Kermarrec>
    * 9cb938e - frontend/dma: expose table_depth parameter. <Florent Kermarrec>
    * a6d836e - gen/examples: add software reset. <Florent Kermarrec>

 * litex changed from 2d018826 to 77139289
    *   77139289 - Merge pull request #552 from ozbenh/memspeed-long <Tim Ansell>
    |\
    | * 6239eac1 - sdram: Use unsigned long for memory test <Benjamin Herrenschmidt>
    * |   a116578c - Merge pull request #550 from antmicro/jboc/spd-read <enjoy-digital>
    |\ \
    | * | a433c837 - bios/litedram: add option to verify SPD EEPROM memory contents <Jędrzej Boczar>
    | * | 1692dfbf - build/sim/spdeeprom: use hex format when loading from file <Jędrzej Boczar>
    * | |   b98a9192 - Merge pull request #549 from antmicro/mglb/fix-vivado-yosys <enjoy-digital>
    |\ \ \
    | |_|/
    |/| |
    | * | a4e83234 - build/xilinx: do not assume build name is "top" <Mariusz Glebocki>
    |/ /
    * |   5cc7a988 - Merge pull request #547 from gsomlo/gls-fix-sdcard-status <enjoy-digital>
    |\ \
    | * | 28290efd - soc/software/litesdcard: update for response register back to 128 bits <Gabriel Somlo>
    * | | 395af900 - interconnect/wishbone/DownConverter: skip accesses on slave when sel==0 and simplify. <Florent Kermarrec>
    * | | 511832a9 - soc/interconnect/axi: generate wishbone.sel for reads. <Florent Kermarrec>
    * | | 4f82a36a - soc/software: only keep 32-bit CSR alignment support. <Florent Kermarrec>
    |/ /
    * | 75936775 - wishbone/wishbone2csr: use wishbone.sel on CSR write. <Florent Kermarrec>
    * | b1ec092e - soc/software/litesdcard: use new send register to send command and remove CSR8_CMD_FIX. <Florent Kermarrec>
    * | efcba14b - platforms/nexys_video: add spisdcard pins. <Florent Kermarrec>
    * | 119ce56f - targets/nexys_video: add spi-sdcard and sdcard support. <Florent Kermarrec>
    * | cc595017 - plaforms/nexys_video: keep up to date with litex-boards. <Florent Kermarrec>
    * | 5cc564fb - targets: simplify Ethernet/Etherbone integration on targets with both. <Florent Kermarrec>
    * | 55c7461e - bios/cmds/cmd_litesdcard: rewrite comments/descriptions. <Florent Kermarrec>
    * | 6cb03963 - bios/main: replace / with -. <Florent Kermarrec>
    * |   5dd5f97b - Merge pull request #545 from gsomlo/gls-fix-mmptr <enjoy-digital>
    |\ \
    | * | 3e1b17d4 - csr: fix simple accessor alignment <Gabriel Somlo>
    * | | 6c1e2d84 - software/liblitesdcard: replace hexdump with dump_bytes already available in the BIOS. <Florent Kermarrec>
    |/ /
    * | 9e068a74 - soc/add_sdcard: add with_emulator parameter to use SDCard emulator (from Google Project Vault) and integrate it in litex_sim. <Florent Kermarrec>
    * | 2ae55e80 - setup.py: add litex_jtag_uart and litex_crossover_uart to console_scripts. <Florent Kermarrec>
    * | 62d939e8 - Merge pull request #543 from antmicro/jboc/eeprom-sim <enjoy-digital>
    |\|
    | * a0ce4ce5 - litex/build/sim: add module for simulating SPD EEPROM <Jędrzej Boczar>
    * | c4f96318 - targets/nexys4ddr: fix sdcard assert. <Florent Kermarrec>
    * | 76cc112e - bios: add main bus and csr bus infos, use KiB/GiB. <Florent Kermarrec>
    |/
    * 02072dea - integration/soc/add_sdcard: always use 32-bit/512bytes memories (not sure this will change?) and allocate sdwrite/sdread regions dynamically. <Florent Kermarrec>
    * 4b3afa75 - integration/soc: add add_sdcard method with integration code from nexys4ddr. <Florent Kermarrec>
    * c78caeb9 - csr: Fix definition(s) of CSR_BASE in generated headers <Benjamin Herrenschmidt>
    * f8bb500a - liblitedram/sdram: Add option to disable cdelay() <Benjamin Herrenschmidt>
    * 6d72ef28 - cpu/serv: add variants. <Florent Kermarrec>
    * fd7ec50e - soc/integration/export: add optional csr_base parameter. <Florent Kermarrec>
    * 795ff08a - build/sim/verilator: add regular_comb parameter (that defaults to False) and pass it to get_verilog. <Florent Kermarrec>
    *   25d2e7c9 - Merge pull request #542 from gsomlo/gls-sdcard-followup <enjoy-digital>
    |\
    | * 6da98ca1 - software/bios: fixup sdclk command <Gabriel Somlo>
    * |   3fd6ecd8 - Merge pull request #541 from antmicro/jboc/spd-read <enjoy-digital>
    |\ \
    | * | 1172c10a - bios: move I2C from liblitedram to libbase <Jędrzej Boczar>
    | * | 472bf9ac - bios/sdram: expose I2C functions <Jędrzej Boczar>
    | * | bdc7eb5c - litex_sim: load SPD data from files in hexdump format as printed in BIOS <Jędrzej Boczar>
    | * | a42dc974 - bios/sdram: add BIOS command for reading SPD <Jędrzej Boczar>
    | * | 8fd3e74e - bios/sdram: add firmware for reading SPD EEPROM <Jędrzej Boczar>
    * | | 68f83cbc - CHANGES: document deprecated/moved modules. <Florent Kermarrec>
    * | | ab806060 - soc/core/uart: move WishboneStreamingBridge in it and rename to Stream2Wishbone. <Florent Kermarrec>
    * | | 0a3d649a - interconnect/wishbone: integrate Wishbone2CSR. <Florent Kermarrec>
    * | | b5b88d27 - interconnect/csr_bus: add separators. <Florent Kermarrec>
    * | | 86952a6e - interconnect/wishbone: remove CSRBank (probably not used by anyone). <Florent Kermarrec>
    * | | e404608c - interconnect/wishbone: add separators and move SDRAM/Cache. <Florent Kermarrec>
    * | | 1fddd0e3 - interconnect/wishbone: simplify DownConverter. <Florent Kermarrec>
    * | | e0d26820 - interconnect/wishbone: remove UpConverter (probably not used by anyone and would need to be rewritten). <Florent Kermarrec>
    | |/
    |/|
    * | 696b31ed - tools/litex_sim: switch to SoCCore/add_sdram instead of SoCSDRAM. <Florent Kermarrec>
    * | 2efcf879 - targets/nexys4ddr: update add_sdcard method. <Florent Kermarrec>
    * | 2934c085 - CHANGES: add JTAG UART. <Florent Kermarrec>
    * | 3b47d4a4 - tools/litex_jtag_uart: add openocd config and telnet port parameters. <Florent Kermarrec>
    * | 67cf6703 - cpus: remove common cpu variants/extensions definition and simplify variant check. <Florent Kermarrec>
    * | 062ff67e - cpu/microwatt: add standard+ghdl variant that uses GHDL Yosys plugin. <Florent Kermarrec>
    * | 24687cbd - tools/litex_client/RemoteClient: add base_address parameter. <Florent Kermarrec>
    * | 78a9579e - cores/uart/RS232PHYTX: fix startbit duration by pre-loading phase_accumulator_tx to tuning_word. <Florent Kermarrec>
    * |   370e4652 - Merge pull request #539 from dayjaby/pr-fix_uart_startbit <enjoy-digital>
    |\ \
    | * | e853ad4b - fix uart startbit: 1 cycle later <David Jablonski>
    * | | c75cf45a - tools: add litex_jtag_uart to create a virtual uart for the jtag uart. <Florent Kermarrec>
    * | | 2cf83b9f - tools: rename litex_crossover poc to litex_crossover_uart, remove from setup for now. <Florent Kermarrec>
    * | | bed5aafd - tools: add litex_crossover to be able to use lxterm (and serialboot) over a crossover UART (bridged over UART/Ethernet/PCIe/USB, etc...). <Florent Kermarrec>
    * | | 3833bc3e - litex_sim: override uart_name to sim only for serial. <Florent Kermarrec>
    * | | da7fd308 - CHANGES: update. <Florent Kermarrec>
    * | | 2fb52e66 - integration/soc: remove TODO in header. <Florent Kermarrec>
    * | | b65f18c3 - cpu/cv32e40p: fix copyright year. <Florent Kermarrec>
    * | | 30f35170 - cpu/cv32e40p: add copyright and improve indentation. <Florent Kermarrec>
    * | | b23702ec - litex_setup/pythondata-cpu-cv32e40p: clone in recursive mode. <Florent Kermarrec>
    * | |   4c4cd335 - Merge pull request #535 from antmicro/arty-cv32e40p <enjoy-digital>
    |\ \ \
    | * | | 2d6ee5aa - cores/cpu: add cv32e40p <Piotr Binkowski>
    | * | | ca8cb834 - software/bios/isr: add support for cv32e40p <Piotr Binkowski>
    | * | | 2903b1bf - litex_setup: add pythondata for cv32e40p <Piotr Binkowski>
    * | | |   7d09ea19 - Merge pull request #538 from antmicro/fix_libbase <enjoy-digital>
    |\ \ \ \
    | * | | | 9d16b0fc - libbase: Include missing uart header <Mateusz Hołenko>
    |/ / / /
    * | | | 3d06dc02 - test/test_targets: update build_test. <Florent Kermarrec>
    * | | | 42350f6d - platforms/targets: keep in sync with litex-boards. <Florent Kermarrec>
    * | | | 2eea7864 - build/sim: rename dut to sim (for consistency with other builds). <Florent Kermarrec>
    * | | | a6cbbc9d - integration/soc: set build_name to platform.name when not specified. <Florent Kermarrec>
    * | | | 16417cb8 - software/liblitespi: fix #endif location. <Florent Kermarrec>
    * | | |   9bdb063b - Merge pull request #516 from antmicro/i2s_support_arty <enjoy-digital>
    |\ \ \ \
    | * | | | ce499900 - Extend I2S capabilities <Pawel Sagan>
    * | | | |   c2e9a26e - Merge pull request #534 from fjullien/fix_litex_sim_warn <enjoy-digital>
    |\ \ \ \ \
    | |/ / / /
    |/| | | |
    | * | | | 7c5f56c2 - litex/sim: fix compiler warnings <Franck Jullien>
    |/ / / /
    * | | |   6fedaa70 - Merge pull request #533 from antmicro/fix-dummy-bits-function-name <enjoy-digital>
    |\ \ \ \
    | * | | | ab41e27e - software/liblitespi/spiflash: fix dummy bits setup function name <Jan Kowalewski>
    |/ / / /
    * | | | d71152ef - litex_setup: move requests import to avoid having to install it on travis. <Florent Kermarrec>
    * | | | 9854fdd5 - .travis: install  requests package before running litex_setup.py. <Florent Kermarrec>
    * | | | bd0f21ba - targets/netv2: remove LiteSPI integration (not mature enough to be directly integrated on targets). <Florent Kermarrec>
    * | | | 80eca300 - software/liblitespi/spiflash: review/simplify/update and test on arty. <Florent Kermarrec>
    * | | | 4a175620 - build/xilinx: simplify LITEX_ENV_ISE/VIVADO handling. <Florent Kermarrec>
    * | | | e91c3171 - software/bios: cleanup includes and specify the lib in the include. <Florent Kermarrec>
    * | | | c3a03d0d - software: create liblitespi and mode litespi code to it (with some parts commented out for now). <Florent Kermarrec>
    * | | | 61238bee - soc/software/bios: add autoconfiguration functionality for LiteSPI core <Jan Kowalewski>
    * | | | d3890055 - litex_setup: add automatic update of litex_setup (because it also changes) and be sure we are on master branch before update. <Florent Kermarrec>
    * | | |   939f546a - Merge pull request #531 from gsomlo/gls-bios-linker <enjoy-digital>
    |\ \ \ \
    | |_|/ /
    |/| | |
    | * | | c5524dbf - software/bios: fix link order to avoid undefined symbol errors <Gabriel Somlo>
    |/ / /
    * | | b4267a79 - build/xilinx: source settings64.sh automatically just before build if LITEX_ENV_ISE/LITEX_ENV_VIVADO environment variables are set. <Florent Kermarrec>
    * | | de7e0ee9 - integration/soc_core: avoid cpu_variant check if custom cpu_cls is passed. <Florent Kermarrec>
    * | | 6f8f0d23 - litex_setup: add litehyperbus and remove hyperbus core/test. <Florent Kermarrec>
    |/ /
    * | 109fd267 - integration/builder: simplify default output_dir to "build/platform". <Florent Kermarrec>
    * | 55c0ddab - litex_setup: add sha1 support on git clone/pull and fix microwatt to a specific sha1. <Florent Kermarrec>
    |/
    *   23d43a2c - Merge pull request #530 from enjoy-digital/bios-libs <enjoy-digital>
    |\
    | * 7192397a - software/libbase: remove linker-sdram (unused). <Florent Kermarrec>
    | * b4b84def - software/bios: mode spisdcard code to liblitesdcard. <Florent Kermarrec>
    | * 21e2a34c - software/bios: rename commands to cmds and update with libs' names. <Florent Kermarrec>
    | * 33f6ce74 - software/bios: move hw flags definitions to respective libs, remove hw/flags.h. <Florent Kermarrec>
    | * 403355a8 - software: create liblitescard and move sdcard init/test code to it. <Florent Kermarrec>
    | * 920d0ee5 - software: create liblitedram and move sdram init/test code to it. <Florent Kermarrec>
    | * c95084e5 - bios/software: rename cmd_dram/cmd_sdcard/cmd_spi_flash to cmd_litedram/cmd_litesdcard/cmd_spiflash. <Florent Kermarrec>
    | * 573a8815 - software/bios/commands: rename cmd_mdio to cmd_liteeth. <Florent Kermarrec>
    | * ff8d9e61 - software/bios: move mdio to libliteeth. <Florent Kermarrec>
    | * 70a67ce7 - software/bios: rename libnet to libliteeth and move all ethernet files to it. <Florent Kermarrec>
    | * 56b8723b - software/bios: rename cmd_mem_access to cmd_mem. <Florent Kermarrec>
    |/
    * a02077d5 - cpu/microwatt/add_sources: add use_ghdl_yosys_synth parameter to convert microwatt to verilog using GHDL-Yosys-plugin and use converted verilog for build. <Florent Kermarrec>
    * b5352f40 - cpu/microwatt: update microwatt_wraper.vhdl <Florent Kermarrec>
    * be25500e - uptime: rework and integrate it in Timer to ease software support. <Florent Kermarrec>
    * d6549ff8 - bios: add uptime command and rewrite cmd_bios comments. <Florent Kermarrec>
    * fc0e55be - soc: improve uptime comments. <Florent Kermarrec>
    *   840679ad - Merge pull request #526 from rprinz08/master <enjoy-digital>
    |\
    | * 3f649077 - Make booting from SD-Card to behave same as from SPI flash <rprinz08>
    * | 82364de5 - soc/SoCController: add uptime since start (disabled by default) and allow features to be enabled/disabled. <Florent Kermarrec>
    |/
    * 3391398a - bios/sdram: always show bitslip on two digits to keep scan aligned. <Florent Kermarrec>
    *   4a5072a0 - Merge pull request #517 from ozbenh/csr-access-rework <enjoy-digital>
    |\
    | * 1e35b0e7 - csr: Rework accessors <Benjamin Herrenschmidt>
    |/
    * d4f44597 - CHANGES: update. <Florent Kermarrec>
    *   a51c7a7b - Merge pull request #518 from enjoy-digital/csr_base <enjoy-digital>
    |\
    | * 748ef1ad - export: add define of CSR_BASE if not already defined and use it for CSRs definitions/accesses. <Florent Kermarrec>
    * |   177c1e53 - Merge pull request #523 from DurandA/patch-5 <enjoy-digital>
    |\ \
    | * | 9d9e7d54 - Update litex_term help <Arnaud Durand>
    |/ /
    * | 2e59dc32 - platforms/nexys4ddr: add card detect pin to sdcard. <Florent Kermarrec>
    * | 51742be2 - integration/soc: review/simplify interconnect and add logger.info. <Florent Kermarrec>
    * |   78413cc0 - Merge pull request #519 from ozbenh/point2point <enjoy-digital>
    |\ \
    | |/
    |/|
    | * 1ed68691 - soc: Revive generation of a PointToPoint interconnect <Benjamin Herrenschmidt>
    |/
    * 9f941138 - test/test_targets: workaround to fix travis. <Florent Kermarrec>
    * 9d1443c1 - cpu/soc_core: automatically set csr mapping to 0x00000000 when using CPUNone, remove csr_base parameter that was used for that. <Florent Kermarrec>
    * 5ea3bae0 - bios/boot: review/fix #503. <Florent Kermarrec>
    *   bf7857f5 - Merge pull request #503 from rprinz08/master <enjoy-digital>
    |\
    | * 1f55fcf4 - fixed bug in BIOS spi flash "fw" command <rprinz08>
    | * f062c0c4 - removed FLASH_BOOT_OFFSET, replaced memcyp with copy_image_from_flash_to_ram <rprinz08>
    | * ea232fc5 - BIOS boot firmware from SPI with address offset <rprinz08>
    * |   b4e349eb - Merge pull request #513 from mubes/bios_linker <enjoy-digital>
    |\ \
    | * | d2d82dac - Bios linker edits to prevent inappropriate optimisation <Dave Marples>
    |/ /
    * | 3fb99b7d - cores/spi_flash: add back old SpiFlashDualQuad and rename new one as SpiFlashQuadReadWrite. <Florent Kermarrec>
    * |   2a5a7536 - Merge pull request #478 from antmicro/extended_spi_flash <enjoy-digital>
    |\ \
    | * | 00f973ea - spi_flash: extend non-bitbanged flash support <Jakub Cebulski>
    | * | a344e20b - spi_flash: fix building without bitbang <Jakub Cebulski>
    * | |   7d79da8e - Merge pull request #510 from mubes/colorlight_usb <enjoy-digital>
    |\ \ \
    | * | | 84997332 - Fix dumb missing line <Dave Marples>
    | * | |   33e202ed - Bring into line with master <Dave Marples>
    | |\ \ \
    | * | | | dc1d4520 - Addition of boot address parameter for trellis builds <Dave Marples>
    * | | | | 3a6dd95d - integration/soc: review/simplify changes for standalone cores. <Florent Kermarrec>
    * | | | |   0d5eb133 - Merge pull request #511 from ozbenh/standalone-cores <enjoy-digital>
    |\ \ \ \ \
    | * | | | | f628ff6b - WB2CSR: Use CSR address_width for the wishbone bus <Benjamin Herrenschmidt>
    | * | | | | 520c17e9 - soc_core: Add option to override CSR base <Benjamin Herrenschmidt>
    | * | | | | ecbd4028 - soc: Don't update CSR alignment when there is no CPU <Benjamin Herrenschmidt>
    | * | | | | f28f2471 - soc: Don't create a wishbone slave to LiteDRAM with no CPU <Benjamin Herrenschmidt>
    | * | | | | dcc881db - soc: Don't create a share intercon with only one master and one slave <Benjamin Herrenschmidt>
    | | |/ / /
    | |/| | |
    * | | | | 873d95e5 - interconnect/wishbonebridge: refresh/simplify. <Florent Kermarrec>
    * | | | |   c136113a - Merge pull request #506 from scanakci/blackparrot_litex <enjoy-digital>
    |\ \ \ \ \
    | * | | | | aed1d514 - Update README.md and core.py for BlackParrot <sadullah>
    | * | | | | 5e4a4360 - Vivado Command Update for Systemverilog <sadullah>
    | |/ / / /
    * | | | |   d2c9d385 - Merge pull request #508 from antmicro/update_litesdcard <enjoy-digital>
    |\ \ \ \ \
    | |/ / / /
    |/| | | |
    | * | | | 0db35069 - Update Litex bios to handle updated litesdcard. <Kamil Rakoczy>
    |/ / / /
    * | | |   3ce90100 - Merge pull request #505 from DurandA/patch-3 <enjoy-digital>
    |\ \ \ \
    | * | | | 2c40967b - Enable 1x mode on SPI flash <Arnaud Durand>
    | | |_|/
    | |/| |
    * | | | e2176cef - soc: remove with_wishbone (a SoC always always has a Bus) and expose more bus parameters. <Florent Kermarrec>
    * | | | 1e610600 - build/lattice/diamond/clock_constraints: review and improve similarities with the others build backends. <Florent Kermarrec>
    * | | |   ebcf67c1 - Merge pull request #502 from shuffle2/master <enjoy-digital>
    |\ \ \ \
    | * | | | eeee179d - diamond: close project when done <Shawn Hoffman>
    | * | | | 9b782bd7 - diamond: clock constraint improvements <Shawn Hoffman>
    | |/ / /
    * | | |   80f5327e - Merge pull request #490 from daveshah1/rdimm_bside_init <enjoy-digital>
    |\ \ \ \
    | * \ \ \   13db89eb - Merge branch 'master' into rdimm_bside_init <enjoy-digital>
    | |\ \ \ \
    | |/ / / /
    |/| | | |
    * | | | | c9e36d7f - lattice/icestorm: add ignoreloops/seed support (similar to trellis) and icestorm_args. <Florent Kermarrec>
    * | | | | ea7fe383 - lattice/trellis: simplify seed support and add it to trellis_args. <Florent Kermarrec>
    * | | | |   5ee01c94 - Merge pull request #484 from ilya-epifanov/lattice-trellis-toolchain-seed <enjoy-digital>
    |\ \ \ \ \
    | * | | | | ac1e9683 - Can now pass `--seed` to `nextpnr-ecp5` via `TrellisToolchain` `kwargs` <Ilya Epifanov>
    * | | | | |   5987ddb4 - Merge pull request #485 from ilya-epifanov/cpu-imac-config-for-vexriscv <enjoy-digital>
    |\ \ \ \ \ \
    | * \ \ \ \ \   c5f74a5a - Merge branch 'master' into cpu-imac-config-for-vexriscv <enjoy-digital>
    | |\ \ \ \ \ \
    | |/ / / / / /
    |/| | | | | |
    * | | | | | | 59d88a88 - integration/soc/add_adapter: rename is_master to direction. <Florent Kermarrec>
    * | | | | | |   57390666 - Merge pull request #504 from sergachev/master <enjoy-digital>
    |\ \ \ \ \ \ \
    | * | | | | | | e4fa4bbc - integration/soc: fix add_adapter for slaves <Ilia Sergachev>
    |/ / / / / / /
    * | | | / / / 2d70220b - bios: Fix warning on 64-bit <Benjamin Herrenschmidt>
    | |_|_|/ / /
    |/| | | | |
    * | | | | | fbbbdf03 - core/led: simplify LedChaser (to have the same user interface than GPIOOut). <Florent Kermarrec>
    * | | | | | 05869beb - cores/led: add LedChaser (now that LiteX is running on FPGA mining boards let's use fancy led blinks :)) <Florent Kermarrec>
    * | | | | | 90c485fc - integration/soc: add clock_domain parameter to add_etherbone. <Florent Kermarrec>
    * | | | | | f1a50a21 - integration/soc: add add_uartbone method (to add a UARTBone aka UART Wishbone bridge). <Florent Kermarrec>
    | |_|_|/ /
    |/| | | |
    * | | | | 79ee135f - bios/sdram: fix lfsr typo. <Florent Kermarrec>
    * | | | |   162d3260 - Merge pull request #500 from mubes/fixups <enjoy-digital>
    |\ \ \ \ \
    | * \ \ \ \   2a37b97d - Merge branch 'master' of https://github.com/enjoy-digital/litex into fixups <Dave Marples>
    | |\ \ \ \ \
    | * | | | | | 967e38bb - Small fixups to address compiler warnings etc. <Dave Marples>
    | | |_|_|_|/
    | |/| | | |
    * | | | | | d74f8fc9 - build/xilinx: add disable_constraints parameter to Platform.add_ip. <Florent Kermarrec>
    | |/ / / /
    |/| | | |
    * | | | | 84841e1d - bios/sdram: fix merge typo in lfsr (thanks Benjamin Herrenschmidt). <Florent Kermarrec>
    * | | | | 99c5b0fc - bios/sdram: Use an LFSR to speed up pseudo-random number generation <Benjamin Herrenschmidt>
    * | | | |   34f26868 - Merge pull request #499 from DurandA/patch-2 <enjoy-digital>
    |\ \ \ \ \
    | * | | | | 5e049d89 - Add data dirs to manifest <Arnaud Durand>
    * | | | | | 8b9aa16d - boards/platforms: update xilinx programmers. <Florent Kermarrec>
    * | | | | | 3c34039b - build/xilinx/vivado: ensure Vivado process our .xdc early. <Florent Kermarrec>
    |/ / / / /
    * | | | | b0578580 - gen/fhdl/verilog: explicitly define input/output/inout wires. <Florent Kermarrec>
    * | | | | 0aa3c339 - targets/genesys2: set cmd_latency to 1. <Florent Kermarrec>
    * | | | | 95b57899 - bios: remove usddrphy debug (we'll use a specific debug firmware to fix the usddrphy corner cases). <Florent Kermarrec>
    * | | | | 98d1b451 - platforms/targets: fix CI. <Florent Kermarrec>
    * | | | | 22bcbec0 - boards: keep in sync with LiteX-Boards, integrate improvements. <Florent Kermarrec>
    * | | | | 28f85c74 - build/lattice/programmer: add UJProg (for ULX3S). <Florent Kermarrec>
    * | | | | 85ac5ef1 - build/lattice/programmer: make OpenOCDJTAGProgrammer closer to OpenOCD programmer. <Florent Kermarrec>
    * | | | | 9a7f9cb8 - build/generic_programmer: catch 404 not found when downloading config/proxy. <Florent Kermarrec>
    * | | | | d0b8daa0 - build/platform: allow doing a loose lookup_request (return None instead of ConstraintError) and allow subname in lookup_request. <Florent Kermarrec>
    * | | | | b8f9f83a - build/openocd: add find_config method to allow using local config file or download it if not available locally. <Florent Kermarrec>
    * | | | | 9bef218a - cpu/microwatt: fix integration/crt0.S (thanks Benjamin Herrenschmidt). <Florent Kermarrec>
    * | | | |   6f24d46d - Merge pull request #496 from gsomlo/gls-fix-makefiles <enjoy-digital>
    |\ \ \ \ \
    | * | | | | edfed4f0 - software/*/Makefile: no need to copy .S files from CPU directory <Gabriel Somlo>
    |/ / / / /
    * | | | |   7f8e34c6 - Merge pull request #494 from shuffle2/patch-2 <enjoy-digital>
    |\ \ \ \ \
    | * | | | | ee413527 - diamond: quiet warning about missing clkin freq for EHXPLLL <shuffle2>
    |/ / / / /
    * | | | | 07e0153b - CHANGES: update. <Florent Kermarrec>
    * | | | | 21127031 - cpu/microwatt: add powerpc64le-linux-gnu to gcc_triple. <Florent Kermarrec>
    * | | | | c06a1279 - cpu/microwatt: add pythondata and fix build with it. <Florent Kermarrec>
    * | | | | 45377d9f - cpus: use a common definition of gcc_triple for the RISC-V CPUs, reorganize CPU by ISA/Data-Width. <Florent Kermarrec>
    * | | | | 7c69a6db - bios/cmd_mdio.c:  fix missing <base/mdio.h> import. <Florent Kermarrec>
    * | | | | b0205335 - cpu/vexriscv: fix flush_cpu_icache, remove workaround on boot.c. <Florent Kermarrec>
    * | | | | 97e534d0 - cpus: add nop instruction and use it to simplify the BIOS. <Florent Kermarrec>
    * | | | | 4efc7835 - cpus: add human_name attribute and use it to simplify the BIOS. <Florent Kermarrec>
    * | | | | d81f171c - software/libbase/system.c: remove unused includes. <Florent Kermarrec>
    * | | | |   3bbadb35 - Merge pull request #492 from scanakci/blackparrot_litex <enjoy-digital>
    |\ \ \ \ \
    | * \ \ \ \   999b93af - Merge branch 'master' into blackparrot_litex <enjoy-digital>
    | |\ \ \ \ \
    | |/ / / / /
    |/| | | | |
    * | | | | |   705d3887 - Merge pull request #474 from fjullien/term_hist_auto_compl <enjoy-digital>
    |\ \ \ \ \ \
    | * | | | | | 74dc444b - bios: add auto completion for commands <Franck Jullien>
    | * | | | | | fc2b8226 - bios: switch command handler to a modular format <Franck Jullien>
    | * | | | | | 86cab3d3 - bios: move helper functions to their own file <Franck Jullien>
    | * | | | | | bc5a1986 - bios: add terminal history <Franck Jullien>
    | * | | | | | e764eabd - builder: add a parameter to pass options to BIOS Makefile <Franck Jullien>
    | | * | | | | 0c770e06 - Update README.md <Sadullah Canakci>
    | | * | | | | 19bb1b9b - update to comply with python-data layout <sadullah>
    | | * | | | | 3eb9efd6 - BP fpga recent version <sadullah>
    | | * | | | | bf864d33 - Fix memory transducer bug, --with-sdram for BIOS works, memspeed works <sadullah>
    | | * | | | | cf01ea65 - rebased, minor changes in core.py <sadullah>
    | | * | | | | b7b9a1f0 - Linux works, LiteDRAM works (need cleaning, temporary push) <sadullah>
    | | * | | | | 74140587 - Create GETTING STARTED <Sadullah Canakci>
    | |/ / / / /
    |/| | | | |
    * | | | | |   e853cac6 - Merge pull request #483 from ilya-epifanov/lattice-openocd-jtag-programmer-erase-flag-and-quiet-output <enjoy-digital>
    |\ \ \ \ \ \
    | * | | | | | a11f1c39 - Removed erase flag and made progress output less noisy <Ilya Epifanov>
    | | |_|_|/ /
    | |/| | | |
    * | | | | |   a6779b9d - Merge pull request #491 from gsomlo/gls-spisd-clusters <enjoy-digital>
    |\ \ \ \ \ \
    | * | | | | | c8e3bba4 - software: spisdcard: cosmetic: avoid filling screen with cluster numbers <Gabriel Somlo>
    * | | | | | | b5978b21 - .travis.yml: disable python3.5 test (nMigen requires 3.6+). <Florent Kermarrec>
    * | | | | | | 10371a33 - CHANGES: update. <Florent Kermarrec>
    * | | | | | | bd8a4100 - cpu/minerva: add pythondata and use it to compile the sources. <Florent Kermarrec>
    * | | | | | | e4a4659d - litex_setup: add nmigen dependency (used to generate Minerva CPU). <Florent Kermarrec>
    * | | | | | | d3e3ca06 - CHANGES: start listing changes for next release. <Florent Kermarrec>
    |/ / / / / /
    * | / / / / 3c70c83f - cpu/software: move flush_cpu_icache/flush_cpu_dcache functions to CPUs. <Florent Kermarrec>
    | |/ / / /
    |/| | | |
    * | | | | bb70a232 - cpu/software: move CPU specific software from the BIOS to the CPU directories. <Florent Kermarrec>
    * | | | | 0abc7d4f - cpu/Minerva: Clone the repository locally for now, we need to create a pythondata repository. <Florent Kermarrec>
    * | | | | b82b3b7e - integration/soc: rename usb_cdc to usb_acm. <Florent Kermarrec>
    * | | | | 0a1afbf6 - litex/__init__.py: remove retro-compat > 6 months old. <Florent Kermarrec>
    * | | | | 3531a641 - soc: allow passing custom CPU class to SoC. <Florent Kermarrec>
    | | | * | 83f4dcb2 - Added `imac` config for CPUs which implements the most basic working riscv32imac feature set, implemented for VexRiscv <Ilya Epifanov>
    | | |/ /
    | |/| |
    | | | * 64b50515 - Add RDIMM side-B inversion support <David Shah>
    | |_|/
    |/| |
    * | |   90a6343d - Merge pull request #488 from enjoy-digital/python3.5 <enjoy-digital>
    |\ \ \
    | |/ /
    |/| |
    | * | 9941e4c1 - travis: add back test on python3.5 (python3.6 is recommended but we can try to keep 3.5 compatibility until we have good reason to no longer support it). <Florent Kermarrec>
    |/ /
    * |   855d614e - Merge pull request #481 from betrusted-io/unfstringify <enjoy-digital>
    |\ \
    | * | 17b76654 - propose patch to not break litex for python 3.5 <bunnie>
    |/ /
    * | 56aa7897 - create first release, add CHANGES and note about Python modules in README. <Florent Kermarrec>
    * | 6d0896de - cpu/serv: switch to pythondata package instead of local git clone. <Florent Kermarrec>
    * | 1b069268 - README: update Python minimal version to 3.6. <Florent Kermarrec>
    * | ff61b1f6 - litex_setup: disable automatic clone of BlackParrot/Microwatt CPUs, reorder LiteX data. <Florent Kermarrec>
    * |   4d86ab9d - Merge pull request #399 from mithro/litex-sm2py <enjoy-digital>
    |\ \
    | * \   317ea7ed - Merge branch 'master' into litex-sm2py <enjoy-digital>
    | |\ \
    | * | | 1f356695 - litex_sim: Find tapcfg from pythondata module. <Tim 'mithro' Ansell>
    | * | | 3aee8a52 - Remove directories from submodules from MANIFEST.in file. <Tim 'mithro' Ansell>
    | * | | ebcb2a44 - Rename litex-data-XXX-YYY to pythondata-XXX-YYY <Tim 'mithro' Ansell>
    | * | | a39a4ec2 - Only allow fast-forward pulls. <Tim 'mithro' Ansell>
    | * | | e618d41f - Fixing mor1kx data finding. <Tim 'mithro' Ansell>
    | * | | 2e3b7f20 - Fix typo in error message. <Tim 'mithro' Ansell>
    | * | | 83b25813 - Fix the libcompiler_rt path. <Tim 'mithro' Ansell>
    | * | | 1c1c5bcb - Remove submodules. <Tim 'mithro' Ansell>
    | * | | c96d1e66 - Fix import for data. <Tim 'mithro' Ansell>
    | * | | 119985f3 - Use the current directory you are running. <Tim 'mithro' Ansell>
    | * | | 69367f8d - Make litex a namespace. <Tim 'mithro' Ansell>
    | * | | 3ae4f8f2 - Adding missing vexriscv CPU. <Tim 'mithro' Ansell>
    | * | | ac3fd794 - Adding missing comma. <Tim 'mithro' Ansell>
    | * | | 3df6c0c8 - Adding litex-data-software-compiler_rt as a required package. <Tim 'mithro' Ansell>
    | * | | 3964565e - Fixed quotes in `litex_setup.py` <Tim 'mithro' Ansell>
    | * | | d5a21a75 - Converting litex to use Python modules. <Tim 'mithro' Ansell>
    |  / /
    * | | 5ef869b9 - soc/cpu: add memory_buses to cpus and use them in add_sdram. <Florent Kermarrec>
    * | | 467fee3e - soc/cpu: rename cpu.buses to cpu.periph_buses. <Florent Kermarrec>
    |/ /
    * |   05815c4e - Merge pull request #477 from shuffle2/patch-1 <enjoy-digital>
    |\ \
    | * | f71014b9 - diamond: fix include paths <shuffle2>
    |/ /
    * | 4dece4ce - soc/cpu: simplify integration of CPU without interrupts (and automatically use UART_POLLING mode in this case). <Florent Kermarrec>
    * |   c5ef9c73 - Merge pull request #473 from fjullien/memusage <enjoy-digital>
    |\ \
    | * | 3892d7a9 - bios: print memory usage <Franck Jullien>
    * | | 9460e048 - tools/litex_sim: use similar analyzer configuration than wiki. <Florent Kermarrec>
    * | |   443cc72d - Merge pull request #476 from enjoy-digital/serv <enjoy-digital>
    |\ \ \
    | * | | 1d1a4ecd - software/irq: cleanup and make explicit that irqs are not supported with Microwatt and SERV, fix compilation warning. <Florent Kermarrec>
    | * | | fb9e369a - serv: connect reset. <Florent Kermarrec>
    | * | | 71778ad2 - serv: update copyrights (Greg Davill found the typos/issues). <Florent Kermarrec>
    | * | | 1f9db583 - serv/cores: fix verilog top level (use serv_rf_top instead of serv_top), working :). <Florent Kermarrec>
    | * | | 2efd939d - serv: fix ibus/dbus byte/word addressing inconsistency, add missing ibus.sel (thanks @GregDavill). <Florent Kermarrec>
    | * | | 22c39236 - initial SERV integration. <Florent Kermarrec>
    | | |/
    | |/|
    * | | c4c891de - build/icestorm: add verilog_read -defer option to yosys script (changes similar the ones applied to trellis). <Florent Kermarrec>
    * | |   192849f0 - Merge pull request #475 from gregdavill/read_verilog_defer <enjoy-digital>
    |\ \ \
    | |_|/
    |/| |
    | * | 642c4b30 - build/trellis: add verilog_read -defer option to yosys script <Greg Davill>
    |/ /
    * | 96e7e6e8 - bios/sdram: reduce number of scan loops during cdly scan to speed it up. <Florent Kermarrec>
    * | 43e1a5d6 - targets/kcu105: use cmd_latency=1. <Florent Kermarrec>
    * | 85a059bf - bios/sdram: add some margin on cdly ideal_delay, do the read_leveling even if write_leveling is not optimal. <Florent Kermarrec>
    * | 038e1bc0 - targets/kc705: manual DDRPHY_CMD_DELAY no longer needed. <Florent Kermarrec>
    * | aaed4b94 - bios/sdram: review/cleanup Command/Clock calibration, set window at the start instead of middle. <Florent Kermarrec>
    * |   33c7b2ce - Merge pull request #472 from antmicro/jboc/sdram-calibration <enjoy-digital>
    |\ \
    | * | ab92e81e - bios/sdram: add automatic cdly calibration during write leveling <Jędrzej Boczar>
    * | |   4608bd18 - Merge pull request #470 from antmicro/jboc/sdram-eeprom-timings <enjoy-digital>
    |\ \ \
    | |_|/
    |/| |
    | * | b0f8ee98 - litex_sim: add option to create SDRAM module from SPD data <Jędrzej Boczar>
    * | | 0b3c4b50 - soc/cores/spi: add optional aligned mode. <Florent Kermarrec>
    * | | 6bb22dfe - cores/spi: simplify. <Florent Kermarrec>
    * | | fc434af9 - build/lattice/common: add specific LatticeiCE40SDROutputImpl/LatticeiCE40SDRTristateImpl (thanks @tnt). <Florent Kermarrec>
    * | | 1457c320 - xilinx/common: use a common SDRTristate implementation for Spartan6, 7-Series and Ultrascale. <Florent Kermarrec>
    * | | 69462e66 - build/xilinx/common: add 7-Series/Ultrascale SDROutput/Input. <Florent Kermarrec>
    * | | 65e6ddc6 - lattice/common: add LatticeECP5DDRInput. <Florent Kermarrec>
    * | | 2031f280 - lattice/common: cleanup instances, simplify tritates. <Florent Kermarrec>
    * | | 2d25bcb0 - lattice/common: add LatticeiCE40DDRInput, LatticeiCE40SDROutput and LatticeiCE40SDRInput. <Florent Kermarrec>
    | |/
    |/|
    * | 56e15284 - platforms/de0nano: swap serial tx/rx to ease use of cheap FT232 based cables. <Florent Kermarrec>
    * | 08e4dc02 - tools/remote/etherbone: update import. <Florent Kermarrec>
    |/
    * 19f983c4 - targets: manual define of the SDRAM PHY no longer needed. <Florent Kermarrec>
    * c0f3710d - bios/sdram: update/simplify with new exported LiteDRAM parameters. <Florent Kermarrec>
    * 3915ed97 - litex_sim: add phytype to PhySettings. <Florent Kermarrec>
    * c0c5ae55 - build/generic_programmer: move requests import to do it only when needed. <Florent Kermarrec>
    * c9ab5939 - bios/sdram/ECP5: set ERR_DDRPHY_BITSLIP to 4. <Florent Kermarrec>

 * litex-boards changed from cb95962 to 0b11aba
    * 0b11aba - platforms/nexys_video: add spisdcard pins. <Florent Kermarrec>
    * 76df4e3 - targets: simplify Ethernet/Etherbone integration on targets with both. <Florent Kermarrec>
    * 2e1a816 - pano_logic_g2: switch to LiteEthPHY and simplify Ethernet/Etherbone. <Florent Kermarrec>
    *   33fe308 - Merge pull request #78 from antmicro/jboc/spd-read <enjoy-digital>
    |\
    | * e5578a1 - zcu104/platform: change I2C number to 0 <Jędrzej Boczar>
    | * ac1f1cd - zcu104: add I2C <Jędrzej Boczar>
    * | 71f220a - colorlight_5a_75b: remove unnecessary parenthesis. <Florent Kermarrec>
    * | 2f3817c - pano_logic_g2: add ethernet (build but not functional yet) and use user_btn_n as sys_rst. <Florent Kermarrec>
    * | f19bc36 - pano_logic_g2: add revision support (b and c, c as default) and add OpenOCD programmer. <Florent Kermarrec>
    * | d6518c7 - prog/openocd: fix openocd_xc6 cfgs. <Florent Kermarrec>
    * | 22f18f6 - pano_logic_g2: move gmii_rst_n to _CRG. <Florent Kermarrec>
    * |   935a711 - Merge pull request #77 from skiphansen/master <enjoy-digital>
    |\ \
    | * | 0648c04 - Updated comment, added link to clocking documentation. <Skip Hansen>
    | * | 1ab4656 - Take Ethernet PHY out of reset so default clock is 125 Mhz (and baud rate is 115,200) <Skip Hansen>
    |/ /
    * | 9b572ec - forest_kitten_33: add minimal target and use es1. <Florent Kermarrec>
    * |   7ad0363 - Merge pull request #76 from gsomlo/gls-nexys4-spisdcard <Tim Ansell>
    |\ \
    | * | 435913f - platforms/nexys4ddr: add option to build with spi-mode sdcard support <Gabriel Somlo>
    |/ /
    * | 0d549a8 - platforms: add forest_kitten_33 initial platform suppport. <Florent Kermarrec>
    * | 12b54a7 - platforms/alveo_u250: add clk300 clock constraints. <Florent Kermarrec>
    * | 46f78b5 - nexys_video: add usb_fifo pins. <Florent Kermarrec>
    * | 445338e - platforms/nexys_video: add specific openocd cfg (use channel 1). <Florent Kermarrec>
    * | 5aeb7d8 - targets/acorn_cle_215: fix typo in description. <Florent Kermarrec>
    * | eeba64d - targets: use soc.build_name in load/flash bitstream. <Florent Kermarrec>
    * | 76551de - platforms/nexys_video: add sdcard pins, move clk/rst to top. <Florent Kermarrec>
    * | 83457b8 - platforms/arty: add _sdcard_pmod_io. <Florent Kermarrec>
    * | 8158d94 - targets/c10lprefkit: switch to litehyperbus. <Florent Kermarrec>
    * | 587caf7 - paltforms/marblemini: add break_off_pmod. <Florent Kermarrec>
    * | c2cd863 - platforms/ecp5_evn: rename spiflash1x to spiflash, rewrite hardware/configuration description and remove make_spiflash. <Florent Kermarrec>
    * |   3f0f120 - Merge pull request #70 from ilya-epifanov/ecp5-evn-spi1x-and-flash-params <enjoy-digital>
    |\ \
    | |/
    |/|
    | * 0ba8045 - Added spiflash1x pins, a method to create an SpiFlash instance and a note on a second UART channel of FT2232H <Ilya Epifanov>
    * | b9ee3a7 - alveo_u250: re-organize the auto-generated IOs, add build/load parameters. <Florent Kermarrec>
    * | c0b7afc - targets/alveo_u250: +x. <Florent Kermarrec>
    * | 67d2a49 - tools/extract_xdc_pins: +x. <Florent Kermarrec>
    * | 482d7a6 - targets/pcie: use 128-bit datapath and 8 max_pending_requests on pcie_x4 configurations. <Florent Kermarrec>
    * | 2bb7fce - targets/acorn_cle_215: add minimal instructions to reproduce the results. <Florent Kermarrec>
    * |   6757c4e - Merge pull request #71 from daveshah1/alveo_u250 <enjoy-digital>
    |\ \
    | * | 088ccec - Add Alveo U250 platform and target <David Shah>
    | |/
    * | c7404e3 - targets/acorn_cle_215: switch to MT41K512M16 (Acorn has a 1GB DDR3 vs 512MB on NiteFury). <Florent Kermarrec>
    * | d05b10f - target/camlink_4k: add missing import. <Florent Kermarrec>
    * | b211c43 - test/test_targets: add acorn_cle_215 and marblemini. <Florent Kermarrec>
    * | 4faa91c - platforms/marblemini: review/cleanup. <Florent Kermarrec>
    * |   4ffdcb5 - Merge pull request #75 from jersey99/marblemini <enjoy-digital>
    |\ \
    | * | e4ccfcf - platforms/marblemini.py: Cleanup. Add openocd for programming marblemini <Vamsi K Vytla>
    | * |   a7d6de7 - Merge branch 'master' into marblemini <Vamsi K Vytla>
    | |\ \
    | * | | 5f7f087 - community/platforms/marblemini.py: Added marblemini from https://github.com/berkeleylab/marble-mini/ <Vamsi K Vytla>
    |  / /
    * | | 6f22f08 - targets: add LedChaser on platforms with user_leds. <Florent Kermarrec>
    * | |   b9a0f23 - Merge pull request #74 from tommythorn/master <enjoy-digital>
    |\ \ \
    | |/ /
    |/| |
    | * | 6335717 - targets/orangecrab.py: propagate command arguments <Tommy Thorn>
    * | | 19b12fd - targets/panol_logic_g2: replace with a minimal target. <Florent Kermarrec>
    * | | 99c0435 - platforms/pano_logic_g2: simplify/cleanup. <Florent Kermarrec>
    * | | 6b5492a - pano_logic_g2: add copyrights. <Florent Kermarrec>
    * | | 6ddd859 - add pano_logic_g2 from litex-buildenv. <Florent Kermarrec>
    * | | 27c242b - targets/pcie: switch to PCIe X4 on all boards that support it. <Florent Kermarrec>
    * | | f993953 - targets/pcie: update LitePCIe constraints. <Florent Kermarrec>
    |/ /
    * | d34c3ba - prog: use different openocd config files for FT232/FT2232. <Florent Kermarrec>
    * | 117d1a1 - prog: add colorlight_5a_75b openocd config. <Florent Kermarrec>
    * | e500d90 - platforms/ecpix5: set pullups on rx_data to advertise as RGMII mode. <Florent Kermarrec>
    * | 59e8c2c - acorn_cle_215: add .bin generation and --flash argument, working on hardware :). <Florent Kermarrec>
    * | a049fa6 - add Acorn CLE 215+ platform/target. <Florent Kermarrec>
    * | da61aab - targets: remove USDDRPHY_DEBUG and set cmd_latency to on all Kintex7/Ultrascale targets. <Florent Kermarrec>
    * | b58b9b9 - platforms: fix CI. <Florent Kermarrec>
    * | 2d9543b - targets: add build/load parameters on all targets. <Florent Kermarrec>
    * | 19eb570 - platforms: make sure all traditional platforms have a create_programmer method. <Florent Kermarrec>
    * | 84468c2 - targets/CRG: platforms are now automatically constraining the input clocks. <Florent Kermarrec>
    * | 1f88a9d - platforms: make sure clocks inputs are constraints on all platforms. <Florent Kermarrec>
    * | 86648ec - platforms/vcu118: rename ddram_second_channel to ddram:1. <Florent Kermarrec>
    * | e1820c7 - platforms/ac701: indent HPC. <Florent Kermarrec>
    * | 2129b67 - platforms: make sure all plarforms have separators. <Florent Kermarrec>
    * | ea0eda9 - platforms: make sure all Xilinx/Altera platforms have a create_programmer method, use OpenOCD on Spartan6 and 7-Series. <Florent Kermarrec>
    * | 588bbac - add prog directory with some Xilinx OpenOCD configurations files. <Florent Kermarrec>
    * | 78b5727 - targets: rename usb_cdc to usb_acm. <Florent Kermarrec>
    |/
    * 2213d73 - targets/kcu105: use cmd_latency=1. <Florent Kermarrec>
    * a8a42c5 - targets/kc705: manual DDRPHY_CMD_DELAY adjustment no longer needed. <Florent Kermarrec>
    * 865b01e - ecpix5: add ethernet. <Florent Kermarrec>
    * 6fe4c4e - ecpix5: add DDR3 (working) <Florent Kermarrec>
    * efb13bc - add mininal ECPIX-5 board support (Clk/Rst/Leds/UART), BIOS working. <Florent Kermarrec>
    * 4154bdf - targets/PCIe: add PCIe software reset. <Florent Kermarrec>
    * 4ad6042 - platforms/de0nano: swap serial tx/rx to ease use of cheap FT232 based cables. <Florent Kermarrec>
    * 4185a01 - targets: manual define of the SDRAM PHY is no longer needed. <Florent Kermarrec>

 * migen changed from 0.6.dev-337-g19d5eae to 0.6.dev-347-gb1b2b29
    * b1b2b29 - zc706: redo FMC connectors <Astro>
    * 0d16e03 - kasli: add DCXO pins <Sebastien Bourdeauducq>
    * ea1eefe - zc706: add FMC HPC connector HA pins <Astro>
    * dc9cfe6 - kasli2: add upper EEMs <Sebastien Bourdeauducq>
    * 6809ee0 - kasli2: add cdr_clk and cdr_clk_clean <Sebastien Bourdeauducq>
    * afc6b02 - zc706: fix LAxx_CC pin naming consistency with KC705 <Sebastien Bourdeauducq>
    * 0762612 - zc706: add user_sma_clock <Sebastien Bourdeauducq>
    * e71f21e - zc706: add FMC connectors <Astro>
    * 5b5e4fd - kasli: typo <Sebastien Bourdeauducq>
    * bea0bdc - kasli: v2.0 support (WIP) <Sebastien Bourdeauducq>

Full submodule status
--
 3a6108a75be356a3dc53760d22782f1323248b6b edid-decode (heads/master)
 3a06aa84b62ad24467fb0d2c6ceddf565e9ea447 flash_proxies (heads/master)
 d62fd24c81c54dae6eb7f06092316215b73237ad litedram (2020.04-43-gd62fd24)
 0feed1720d0063ff67210728ecfe422891f809e0 liteeth (2020.04-7-g0feed17)
 6fdd02058fba29008c90b162e0ef707dce15ebeb liteiclink (2020.04)
 b0e8383d6179ee81a708204d4db9263d6fadc6c8 litepcie (2020.04-12-gb0e8383)
 2e5c5b12d52f695f4560ca7dd08b4170d7568715 litesata (2020.04)
 54488c0f4d6e9e953f1a0de3d578915a5e4ccddf litescope (2020.04)
 7457a29b1a47fe15e81fa37f3bbdd510788f1d53 liteusb (heads/master)
 41f30143075ece3fff5c33a332ed067d1837cbb3 litevideo (2020.04)
 77139289f86a412deb0da7f783ea44ded5e05900 litex (2020.04-260-g77139289)
 0b11aba8a18a9e38f6a49e7f291c072e80e3224e litex-boards (2020.04-71-g0b11aba)
 7da392963878842f93f09a7a218c1052ae5e45d6 litex-renode (remotes/origin/HEAD)
 b1b2b298b85a795239daad84c75be073ddc4f8bd migen (0.6.dev-347-gb1b2b29)
 8f5a253b22cd4ebcd56304a3662f4c70e3b34ed5 nmigen (v0.1-69-g8f5a253)