1abb03e514
tang_nano_4k: Review/Cleanup:
...
- Revert abstractions on clk_name/period: Too much abstraction to avoid duplications makes the code more difficult to read.
ex:
- When constraining clk27, frequency is already in the name.
- In the target, we want to know we are using clk27 as the main clk.
- We need a default sys_clk_freq for project only importing BaseSoC.
- Revert SPI Flash import (for consistency with other targets).
- Keep VexRiscv as default CPU since this target is able to run it and also for consistency with other targets.
2022-01-24 18:46:51 +01:00
6238052b10
tang nano 4k: disable spi flash with gowin emcu, cleanup
2022-01-23 16:10:46 +01:00
6c81fc708c
tang nano 4k: add memory regions, set default cpu
2022-01-23 13:05:51 +01:00
fccb952c4b
target: Remove ident_version=True no longer required.
2022-01-18 17:13:02 +01:00
4b6a9b2cf0
targets/spiflash: Simplify self.cpu.set_reset_address call.
2022-01-07 15:19:23 +01:00
8151bf7ffa
targets: Update and simplify SPI-Flash support (Address is now automatically allocated).
2022-01-07 10:34:47 +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
14a8c50e97
sipeed_tang_nano_4k: connect Gowin EMCU UART, undo unnecessary changes
2021-12-09 00:17:48 +01:00
6274c4c425
sipeed_tang_nano_4k: connect Gowin EMCU UART
2021-12-09 00:12:31 +01:00
13c83ba532
sipeed_tang_nano_4k: add initial Gowin EMCU support
2021-12-08 23:50:14 +01:00
4287ab561e
sipeed_tang_nano_4k: allow non-vexriscv CPUs
2021-12-08 23:33:49 +01:00
666ef9dad3
sipeed_tang_nano_4k: use minimal vexriscv variant to fit into number of BSRAMs
2021-11-29 11:46:32 +01:00
2fb734a0f2
sipeed_tang_nano*: adapt Gowin PLL changes in litex
2021-11-29 11:45:13 +01:00
5190c9c869
sipeed_tang_nano_4k: Initial Video Out support.
...
With colorbars for now, need to free up BRAMS for Video Terminal (or finish HyperRAM support).
2021-09-20 09:32:20 +02:00
7161ad18ec
sipeed_tang_nano_4k: Integrate new LiteX's GW1NSRPLL.
2021-09-20 08:40:19 +02:00
a5c5ba7652
sipeed_tang_nano_4k: Integrate HyperRam (not yet working).
2021-09-17 16:30:39 +02:00
376a836583
sipeed_tang_nano: Add SPI Flash, Enable CPU and use new external SPI Flash support from OpenFPGALoader.
...
./sipeed_tang_nano_4k.py --cpu-type=vexriscv --cpu-variant=lite --build --flash
__ _ __ _ __
/ / (_) /____ | |/_/
/ /__/ / __/ -_)> <
/____/_/\__/\__/_/|_|
Build your hardware, easily!
(c) Copyright 2012-2021 Enjoy-Digital
(c) Copyright 2007-2015 M-Labs
BIOS built on Sep 17 2021 15:54:08
BIOS CRC passed (6cc6de6d)
Migen git sha1: a5bc262
LiteX git sha1: 46cd9c5a
--=============== SoC ==================--
CPU: VexRiscv_Lite @ 27MHz
BUS: WISHBONE 32-bit @ 4GiB
CSR: 32-bit data
ROM: 64KiB
SRAM: 8KiB
FLASH: 4096KiB
--========== Initialization ============--
Initializing W25Q32 SPI Flash @0x80000000...
SPI Flash clk configured to 13 MHz
Memspeed at 0x80000000 (Sequential, 4.0KiB)...
Read speed: 1.3MiB/s
Memspeed at 0x80000000 (Random, 4.0KiB)...
Read speed: 521.9KiB/s
--============== Boot ==================--
Booting from serial...
Press Q or ESC to abort boot completely.
sL5DdSMmkekro
Timeout
No boot medium found
--============= Console ================--
litex>
2021-09-17 15:57:55 +02:00
5955a35372
Add initial Sipeed Tang Nano support (Clk/Leds/Buttons).
2021-09-16 19:22:30 +02:00
8d91489756
tang_nano_4k: Add more IOs.
2021-09-09 11:23:20 +02:00
88534c6689
tang_nano_4k: Fix typo in sipeed.
2021-09-08 23:02:39 +02:00
Florent Kermarrec
Ilia Sergachev
Ilia Sergachev