f986855926
Merge pull request #372 from mkj/butterstick-ethdelay
...
butterstick: set ethernet rx_delay to 0ns
2022-04-21 09:00:13 +02:00
00ff61baa9
targets: Simplify clock domains and remove useless reset_less.
...
rst was not directly assigned/used on reset_less clock domains, so reset_less
property was not really useful. With the changes on stream.CDC, having a rst
(Even fixed at 0) is now mandatory on clock domains involved in the CDC, so this
also fixes targets.
2022-04-01 11:30:38 +02:00
2a206def0f
targets/ecp5/ddr3: Uniformize cd_sys2x (reset_less).
2022-03-22 17:32:35 +01:00
53c221a1fa
butterstick: set ethernet rx_delay to 0ns
...
The Microchip KSZ9031RNX PHY on the Butterstick has a default 1.2ns
internal RX delay so we shouldn't add the default 2ns MAC delay.
In testing with Linux on vexriscv I haven't seen any difference either
way, but with liteeth in Microwatt I have seen 30%+ packet loss when
receiving from certain ethernet devices (RTL8153 and AX88179 usb-gige
adapters, a GS105 switch didn't show the problem). Setting RX delay=0
resolves the problem. A TX delay is still required by the PHY.
2022-03-22 13:51:03 +08:00
9d452b0d74
targets: Create target_group for target arguments.
2022-03-21 18:37:40 +01:00
cc8da9d341
targets: Simplify imports and switch to LiteXSocArgumentParser.
...
CPU parameters are now selectively exposed to the user:
./digilent_arty.py --cpu-type=vexriscv_smp --help will show VexRiscv-SMP parameters.
./digilent_arty.py --cpu-type=naxriscv --help will show NaxRiscv parameters.
2022-03-21 16:59:40 +01:00
773444a7dd
targets: Switch to get_bios_filename/get_bitstream_filename.
2022-03-17 09:21:05 +01:00
5f2ccb2d32
targets: Switch from bridge to crossover.
2022-01-19 17:03:17 +01:00
fccb952c4b
target: Remove ident_version=True no longer required.
2022-01-18 17:13:02 +01:00
a4130556ac
gsd_butterstick: Add optional SYZYGY GPIO (--with-syzygy-gpio) to expose the 32 GPIOs on SYZYGY breakout board.
2022-01-06 18:37:42 +01:00
53dc00eab7
targets/parser: Rely on argparse.ArgumentDefaultsHelpFormatter to provide default in help description.
...
Also do minor adjustments while doing this.
2022-01-05 17:06:40 +01:00
fd2ec534a7
butterstick: Add extra pins
2021-12-05 20:33:28 +10:30
c8a8e943b5
butterstick: add --sdram-device option
...
Set 64M16 as default sdram-device.
Related to #298
2021-12-04 17:07:06 +10:30
91818bc5f0
targets/gsd_butterstick/BaseSoC: Set default device to 85F (consistency with default arguments).
2021-10-26 17:01:55 +02:00
9e18d9bc34
gsd_butterstick: Remove ECLKBRIDGECS (not required).
2021-10-07 14:09:22 +02:00
68fb163a27
targets: Remove spiflash mapping on targets where it's no longer useful.
2021-09-14 18:35:13 +02:00
aa2209729f
gsd_butterstick: Force uart_name to crossover when set to serial.
2021-09-02 15:23:05 +02:00
fddca1cd40
gsd_butterstick: Add SDCard (SPI & SD modes) support.
2021-09-02 14:06:09 +02:00
596f430326
gsd_butterstick: Add SPI Flash support.
2021-09-02 11:28:21 +02:00
55ea71bd01
gsd_butterstick: Add initial DDR3 support.
...
Validated with:
./gsd_butterstick.py --uart-name=crossover --with-etherbone --csr-csv=csr.csv --build --load
litex_server --udp
litex_term bridge
__ _ __ _ __
/ / (_) /____ | |/_/
/ /__/ / __/ -_)> <
/____/_/\__/\__/_/|_|
Build your hardware, easily!
(c) Copyright 2012-2021 Enjoy-Digital
(c) Copyright 2007-2015 M-Labs
BIOS built on Sep 1 2021 19:09:52
BIOS CRC passed (3d349845)
Migen git sha1: 27dbf03
LiteX git sha1: 315fbe18
--=============== SoC ==================--
CPU: VexRiscv @ 75MHz
BUS: WISHBONE 32-bit @ 4GiB
CSR: 32-bit data
ROM: 128KiB
SRAM: 8KiB
L2: 8KiB
SDRAM: 524288KiB 16-bit @ 300MT/s (CL-6 CWL-5)
--========== Initialization ============--
Initializing SDRAM @0x40000000...
Switching SDRAM to software control.
Read leveling:
m0, b00: |01110000| delays: 02+-01
m0, b01: |00000000| delays: -
m0, b02: |00000000| delays: -
m0, b03: |00000000| delays: -
best: m0, b00 delays: 02+-01
m1, b00: |01110000| delays: 02+-01
m1, b01: |00000000| delays: -
m1, b02: |00000000| delays: -
m1, b03: |00000000| delays: -
best: m1, b00 delays: 02+-01
Switching SDRAM to hardware control.
Memtest at 0x40000000 (2.0MiB)...
Write: 0x40000000-0x40200000 2.0MiB
Read: 0x40000000-0x40200000 2.0MiB
Memtest OK
Memspeed at 0x40000000 (Sequential, 2.0MiB)...
Write speed: 13.6MiB/s
Read speed: 15.6MiB/s
--============== Boot ==================--
Booting from serial...
Press Q or ESC to abort boot completely.
sL5DdSMmkekro
Timeout
No boot medium found
--============= Console ================--
litex>
2021-09-01 19:21:16 +02:00
1f25a98476
butterstick: Add Ethernet/Etherbone support (UART crossover working over Etherbone).
2021-09-01 18:03:13 +02:00
1f149ece6b
Add intial ButterStick support (with just Clk, Buttons and Leds).
2021-09-01 17:33:54 +02:00
enjoy-digital
Matt Johnston
Greg Davill