Lup Yuen Lee 李立源 @lupyuen@qoto.org

@jeancf That's what the BL602 firmware says when it boots ... Also the letters seem to be sorted, so X looks kinda correct 🤔

@AmpBenzScientist you might wanna share your reverse engineered code here: https://github.com/pine64/bl602-re

@AmpBenzScientist haha that's great, what blobs did you reverse engineer?

Animal Crossing ✕ Uniqlo

https://www.uniqlo.com/sg/en/spl/ut/animal-crossing

Loongson unveils LoongArch CPU instruction set architecture for processors made in China

https://www.cnx-software.com/2021/04/17/loongson-loongarch-cpu-instruction-set-architecture/

Why is #BL602 designated RV32-IMACFX ? Here's the #RISCV alphabet soup...

https://en.wikipedia.org/wiki/RISC-V#ISA_base_and_extensions

Our Custom #RustLang Target for #BL602 also needs "features" set to "+m,+a,+c,+f" ... Figured this out by comparing the Standard Rust Targets "riscv32imac-unknown-none-elf" and "riscv64gc-unknown-none-elf" (64-bit #RISCV, double-precision hardfloat)

https://github.com/lupyuen/bl_iot_sdk/blob/rust/customer_app/sdk_app_rust/riscv32imacf-unknown-none-elf.json

#RISCV Morpheus Turns a CPU Into a Rubik’s Cube to Defeat Hackers

https://spectrum.ieee.org/tech-talk/semiconductors/processors/morpheus-turns-a-cpu-into-a-rubiks-cube-to-defeat-hackers

More about #RustLang Custom Targets...

https://docs.rust-embedded.org/embedonomicon/custom-target.html

Here's how we build #BL602 #RustLang programs with our Custom Target ... This also builds the Rust Core Library for our Custom Target

https://github.com/lupyuen/bl_iot_sdk/blob/rust/customer_app/sdk_app_rust/run.sh#L33-L77

Here's the Custom #RustLang Target for #BL602: "riscv32imacf-unknown-none-elf" ... We set "llvm-abiname" to "ilp32f" for Single-Precision Hardware Floating Point ... Similar to "gcc -mabi=ilp32f"

https://github.com/lupyuen/bl_iot_sdk/blob/rust/customer_app/sdk_app_rust/riscv32imacf-unknown-none-elf.json

#RustLang runs OK on #BL602 IoT SDK ... After creating custom target "riscv32imacf-unknown-none-elf" yay! 🎉

https://github.com/lupyuen/bl_iot_sdk/tree/rust/customer_app/sdk_app_rust

Linking #RustLang code (riscv32imac) with #BL602 IoT SDK (RV32-ACFIMX) ... "Can't link soft-float modules with single-float modules" 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/rust/customer_app/sdk_app_rust/run.sh

Legal threats against good faith Security Researchers ... Vulnerability disclosure gone wrong

https://github.com/disclose/research-threats

Our #BL602 Driver for #LoRa RFM90 Module @ThePine64 is complete! 🎉 I hope to see this in your #PineCone LoRa project real soon 👍

https://github.com/lupyuen/bl_iot_sdk/blob/master/components/3rdparty/lora-sx1262

FBI shuts down #malware on hundreds of #Exchange servers, opens Pandora's box

https://blog.malwarebytes.com/hacking-2/2021/04/fbi-shuts-down-malware-on-hundreds-of-exchange-servers-opens-pandoras-box/

Multiple #DNS Vulnerabilities affecting over 100 million devices

https://www.csa.gov.sg/singcert/alerts/al-2021-024

Work with GitHub Actions in your terminal with GitHub CLI

https://github.blog/2021-04-15-work-with-github-actions-in-your-terminal-with-github-cli/