On 5/21/19 12:33 PM, Marcel Ziswiler wrote:
On Tue, 2019-05-21 at 12:50 +0300, Alex Sadovsky wrote:
It's slightly off-topic but I wonder whether this ongoing deprecation of ARMv4 and ARMv5 (first in GCC, then in U-Boot) really simplifies anything at all. There are tons of devices that are still working good and there are even ARMv5-based MCUs that are still produced (such as CH561 manufactured by WCH).
Please note that as of today Marvell is also still producing them PXAs which are not to go end-of-life before later next year I believe.
IMHO it makes sense to drop only the XScale-specific tuning first and to treat PXA (and similar CPUs) as a more generic armv5te. I wonder what to do when GCC drops ARMv5 completely...
I believe it was only an issue with early gcc 8 but does work just fine again with later 8.2 or 8.3 versions.
However, what is more concerning to me is that in today's convoluted moloch known as U-Boot there may simply not be any space any more for something truly embedded but somewhat limited like PXA based hardware.
If we ignore the PXA25x/26x, the PXA27x has loads of SRAM for U-Boot SPL and then can load U-Boot proper into DRAM. What's the problem ?