Lup Yuen Lee 李立源 @lupyuen@social.cleverlibre.org

How we handle a #RISCV Interrupt with Platform-Level Interrupt Controller (PLIC)

Article: https://lupyuen.codeberg.page/articles/plic2.html#handle-the-interrupt

"the school gave everyone on campus – including staff – a Light Phone ... a “dumb” phone with limited functionality"

https://www.theguardian.com/lifeandstyle/2024/jan/17/cellphone-smartphone-bans-schools

How #Ox64 BL808 #RISCV SBC boots Apache #NuttX RTOS ... Exactly like Linux

Source: https://lupyuen.codeberg.page/articles/app

"#GNOME adopted Vala as a new language to solve the short-comings of C. Vala seems to be dead"

https://gruenich.blogspot.com/2024/01/new-programming-language-needed-for-kde.html

"A detailed apology for how I interacted with the #Linux Kernel community ... are included, along with descriptions of what the technical issues were. I have been attending prison workshops, and working hard on improving my social skills to aid my becoming less of a danger to society"

https://www.phoronix.com/news/Hans-Reiser-2024

"Due to (#WebGPU) Timing Attack concerns, Timestamp queries are quantized with a resolution of 100 microseconds, which provides a good compromise between Precision and Security"

https://developer.chrome.com/blog/new-in-webgpu-121

QuickJS: #JavaScript Engine with POSIX support ... Will it compile for Apache #NuttX RTOS? 🤔

https://bellard.org/quickjs/

Why is #Ox64 BL808 reusing the old MMU Page Tables of the Previous Process? Need to investigate #RISCV T-Head C906 MMU Caching 🤔

Source: https://gist.github.com/lupyuen/def8fb96245643c046e5f3ad6c4e3ed0#found-workaround-bypass-the-destroying-of-address-environment

"Haier issued a Takedown notice to a software developer for creating #HomeAssistant integration plugins for the company's Home Appliances"

https://www.bleepingcomputer.com/news/security/haier-hits-home-assistant-plugin-dev-with-takedown-notice/

"#RISCV made the decision not to have Condition Codes ... Emulating x86-64 quickly on RISC-V is likely to be much harder because of this choice"

https://queue.acm.org/detail.cfm?id=3639445

"any Linux or Windows workflow triggered from a public repository, using #GitHub’s default labels, will run on our faster, more powerful 4-vCPU runners"

https://github.blog/2024-01-17-github-hosted-runners-double-the-power-for-open-source/

How we Emulate the #Ox64 BL808 UART Port ... In TinyEMU #RISCV Emulator

Source: https://github.com/lupyuen/nuttx-tinyemu#intercept-uart-registers-for-ox64-bl808-emulator

We configure #RISCV Interrupts for #Ox64 BL808 SBC at Hart 0, Supervisor Mode

Article: https://lupyuen.codeberg.page/articles/plic2.html#hart-0-supervisor-mode

Fedora Asahi Remix: #Linux for M1 / M2 Macs

https://asahilinux.org/2024/01/fedora-asahi-new/

#LoRa Sensor "measures Heart Rate and Body Temperature using a form-fitting, lattice-like mesh of thermoplastic polyurethane"

https://spectrum.ieee.org/wearable-medical-devices-lora

Emulate #Ox64 BL808 #RISCV SBC in the Web Browser ... Making good progress! 👍

Source: https://github.com/lupyuen/nuttx-tinyemu#emulate-ox64-bl808-in-web-browser

Enabling #RISCV Interrupts in the Platform-Level Interrupt Controller (PLIC)

Article: https://lupyuen.codeberg.page/articles/plic2.html#enable-the-interrupt

"These are difficult, long-term projects that could be valuable to Open Source Investigators at Bellingcat and around the world" (Electrical network frequency analysis)

https://github.com/bellingcat/open-questions