This repository has been archived on 2026-08-21. You can view files and clone it. You cannot open issues or pull requests or push a commit.

FallenSigh ae89363227 perf(matmul): bypass printf — direct UART 16550 register writes ...

Replace all printf() calls with direct UART THR register access:
- uart_tx(): poll LSR bit5, write byte to THR
- uart_puts(): null-terminated string output
- uart_puthex(): 8-digit lowercase hex for CRC32

Eliminates picolibc printf overhead: no format parsing, no FILE* I/O,
no locale, no buffering. UART runs at 115200 baud (~8.7μs/byte),
THR nearly always empty at 33MHz core → single poll iteration.

Output: MATMUL_START, MATMUL_CRC32=XXXXXXXX, MATMUL_DONE

2026-06-26 17:51:13 +08:00

.agents/skills

Clean production code: -O2, read CRC32 from ExtRAM, remove all debug

2026-06-24 23:42:35 +08:00

.claude

Clean production code: -O2, read CRC32 from ExtRAM, remove all debug

2026-06-24 23:42:35 +08:00

.codex

Clean production code: -O2, read CRC32 from ExtRAM, remove all debug

2026-06-24 23:42:35 +08:00

.omo/run-continuation

Interrupt-driven wait: matmul HWI2 + DMA HWI1 direct CPU lines

2026-06-25 20:03:53 +08:00

.opencode

Clean production code: -O2, read CRC32 from ExtRAM, remove all debug

2026-06-24 23:42:35 +08:00

.trellis

Pipelined multiplier: 3-stage LUT-based replaces shift_add, FSM simplified to 2-state

2026-06-25 22:09:20 +08:00

doc

Initial commit: Loongson FPGA SoC project for 2026 CIC-IEC

2026-06-23 01:22:45 +08:00

fpga

Track .xci/.xcix/.xdc as source files; drop Vivado-generated stubs/netlists

2026-06-23 01:33:56 +08:00

rtl

Fix pipe_cnt range: issue 0-15 (16 rounds), acc 4-19, done at 20

2026-06-25 22:26:07 +08:00

sdk

perf(matmul): bypass printf — direct UART 16550 register writes

2026-06-26 17:51:13 +08:00

sim

Fix SRAM model: level-sensitive write for burst support

2026-06-25 15:40:28 +08:00

tools

tools: add extract_cbor_uart.py — extract UART output from CBOR trace files

2026-06-26 17:40:20 +08:00

.gitignore

Track .xci/.xcix/.xdc as source files; drop Vivado-generated stubs/netlists

2026-06-23 01:33:56 +08:00

AGENTS.md

Clean production code: -O2, read CRC32 from ExtRAM, remove all debug

2026-06-24 23:42:35 +08:00

Description

No description provided

193 MiB

Languages

Verilog 46.5%

C 27.8%

Assembly 20.5%

SystemVerilog 3.3%

Python 0.7%

Other 1.2%