Re:Arm IPO to kick off today with company valued at $54.5B
by snvzz on Friday September 15, 2023 @06:19AM
(#37520859)
>Everything on top of that - GPIO, memory interfaces, timing, etc - is vendor specific, and will stay that way for RISC-V.
Not as true for RISC-V, as there's efforts (some of them complete) to standardize interfaces to standard peripherals.
E.g. timers, gpios and watchdogs.
That's not even true within the ARM ecosystem itself. The chips from Infineon are not source-code compatible with STM, STM is not compatible with Microchip, Microchip is not compatible with TI...
The problem is that the ARM core is just a portion of the architecture. Everything on top of that - GPIO, memory interfaces, timing, etc - is vendor specific, and will stay that way for RISC-V.
Not to mention, the chips also won't be electrically-compatible. Your hardware architecture can be as daunting to redesign as the code, if not more so.