Lup Yuen Lee 李立源 @lupyuen@social.cleverlibre.org
- Pronouns/Gender/Sexuality
- He/Him/They, Bisexual/Asexual 🇸🇬
- Date of Birth
- 1969
- Articles
- https://lupyuen.codeberg.page
IoT Techie and Educator / Apache NuttX PMC
Joined Jan 2020
SOPHGO SG2000 / SG2002 AI SoC: #RISCV T-Head C906 Dual Core + Arm Cortex-A53
"microSD card of unknown origin is soldered onto a USB interface board to serve as makeshift NAND Storage"
Escaping from #Docker one Syscall at a time (strace)
https://snyk.io/blog/leaky-vessels-container-vuln-deep-dive/
"an effort is underway to develop a Smartphone App that is sensitive enough to accurately discern Coughs associated with TB"
https://medicalxpress.com/news/2024-02-experimental-cell-app-screen-tb.html
#RISCV T-Head C9xx Cache Sync in #Linux Kernel ... Mystery solved 👍
Source: https://graphics.social/@daridrea/111892608849325322
Lup Yuen Lee 李立源
boosted
@lupyuen the patch introduces a new function called `flush_icache_range_phy` that flushes the instruction cache for a given range of physical addresses. It uses assembly instructions to perform the cache flushing operation. additionally, `flush_icache_range` macro is modified to call the new `flush_icache_range_phy` function instead of `flush_icache_all`
It's likely that the T-Head C9xx processor has its own cache synchronization mechanism tailored to its specific architecture and requirements
Lup Yuen Lee 李立源
boosted
@lupyuen generally, in a multi-level cache hierarchy, such as the one in the T-Head C9xx processor, it's crucial to maintain data consistency between different levels of cache (because modifications to data can be made in one level of cache and need to be propagated to other levels to ensure that all caches have the most up-to-date version of the data). Cache sync typically involves two main operations: cache invalidation and cache flushing
Apache #NuttX Drivers bolding going to Strange New Worlds ... #ZigLang and #WebAssembly! 👍
The Bustling World: "open-world RPG set in ancient China"
Building a Flying Umbrella (#STM32 F7 Flight Controller)
Apache #NuttX Apps will terminate by calling the Exit System Call with #RISCV ECALL
Source: https://github.com/lupyuen/tcc-riscv32-wasm#implement-exit-with-nuttx-system-call
Lup Yuen Lee 李立源
boosted
@lupyuen Ohh dear god, please no. Many, many moons ago, I had to deal with that pile of Kudzu, and any time I hear it's name I get horror flashbacks.
[NSFW] Pet Shop Boys: "Loneliness"
ROM FS Filesystem looks surprisingly readable 👍
Source: https://github.com/lupyuen/tcc-riscv32-wasm#inside-a-rom-fs-filesystem
Check for Null Pointer before calling free()?
Resurrecting Banyan VINES (2023)
https://wiki.restless.systems/wiki/Banyan_VINES_resurrection
"She took his coat and hung it up"
https://www.theregister.com/2024/02/06/dutch_defense_china_cyberattack/
Interface to Honeywell / Ademco keypads and panels
- Pronouns/Gender/Sexuality
- He/Him/They, Bisexual/Asexual 🇸🇬
- Date of Birth
- 1969
- Articles
- https://lupyuen.codeberg.page
IoT Techie and Educator / Apache NuttX PMC
Joined Jan 2020
