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Where is the CPU hardware manual that tells me the CPU's memory map and registers? This is why so much hardware ends up in landfills. No thanks to undocumented
by MisterTea 4y ago
Where is the CPU hardware manual that tells me the CPU's memory map and registers?
This is why so much hardware ends up in landfills. No thanks to undocumented junk.
- swetland 4y agoThe CPU itself (Core Complex, including cache, irq controller, etc) is documented by SiFive: https://www.sifive.com/cores/u74-mc https://www.sifive.com/cores/u74-mc Unfortunately there appears to be no detailed documentation at all (unless you count a pile of Linux and bootloader patches, which I don't) for the peripherals, etc, outside of the core complex on the SoC: https://doc-en.rvspace.org/Doc_Center/jh7110.html https://doc-en.rvspace.org/Doc_Center/jh7110.html
- MisterTea 4y ago> unless you count a pile of Linux and bootloader patches, which I don't This is what drives me crazy. Vendor claims "open source" which means an outdated linux image and the source code is wrapped up inside of a megalith build monstrosity like penguintronix or yocto. Utter junk these things are.