On Fri, 4 Mar 2022 02:06:03 +0100 Linus Walleij linus.walleij@linaro.org wrote:
Hi,
Linus, thanks for the heads up, much appreciated!
On Thu, Mar 3, 2022 at 9:44 PM Sean Anderson sean.anderson@seco.com wrote:
The main device affected by these changes is vexpress64, so I'd appreciate if Linus (or anyone else) could try booting.
As it happens, I am sitting on a series updating vexpress_aemv8a_semi, and letting it use OF_CONTROL. I will send this ASAP. As it turned out, the automatic semihosting boot command is actually broken in v2022.01, the fix is the first patch in my series. This clashes with this series, but it's easy to resolve.
From skimming over this series here, it looks quite nice, I especially love promoting the semihosting load to a proper filesystem. The only drawback seems to be that this will break existing scripts used by people in their deployments, which rely on the smhload command. I don't really know if there are actually any users doing so, but I guess we will find out.
Is there any official U-Boot policy for changing commands, which might break scripts? For instance I was always tempted to fix the "afs" command, or make that an fs as well.
I will test and review this series ASAP.
Thanks, Andre
I am currently on parental leave and pretty far removed from that hardware and have very little bandwidth. I added Andre Przywara to the header (include him in the future) because currently he does much more U-Boot work on these platforms than me.
The actual user of the semihosting commands is (IIRC) FVP, the software-only version of vexpress-variants. The semihosting creates software traps inside the emulated environment.
Yours, Linus Walleij