> Subject: Re: zephyr ARM64 SMP runs on Jailhouse
>
> On 19.11.20 03:50, Peng Fan wrote:
> > Just share info, we have enabled zephyr ARM64 SMP on Jailhouse using
> > i.MX8M
> >
>
> This is great news, indeed! Do you need patches against Zephyr, or is
> upstream ready for this? Would it work in qemuarm64 as well?
Current upstream zephyr not support SMP, and only runs in secure world.
So I have some patches to make it run in normal world and SMP support.
I only did this on i.MX8MM EVK board. Qemuarm64 needs some porting
effort. Jailhouse also needs one minor patch as below:
@@ -364,15 +365,21 @@ static enum mmio_result gicv3_handle_redist_access(void
*arg,
case GICR_SYNCR:
mmio->value = 0;
return MMIO_HANDLED;
- case GICR_CTLR:
- case GICR_STATUSR:
- case GICR_WAKER:
case GICR_SGI_BASE + GICR_ISENABLER:
case GICR_SGI_BASE + GICR_ICENABLER:
case GICR_SGI_BASE + GICR_ISPENDR:
case GICR_SGI_BASE + GICR_ICPENDR:
case GICR_SGI_BASE + GICR_ISACTIVER:
case GICR_SGI_BASE + GICR_ICACTIVER:
+ if (this_cell() != cpu_public->cell) {
+ /* ignore access to foreign redistributors */
+ return MMIO_HANDLED;
+ }
+ mmio->value &= ~(SGI_MASK | (1 << mnt_irq));
+ break;
+ case GICR_CTLR:
+ case GICR_STATUSR:
+ case GICR_WAKER:
case REG_RANGE(GICR_SGI_BASE + GICR_IPRIORITYR, 8, 4):
case REG_RANGE(GICR_SGI_BASE + GICR_ICFGR, 2, 4):
if (this_cell() != cpu_public->cell) {
I'll prepare my zephyr patches to zephyr PR.
Regards,
Peng.
>
> Jan
>
> --
> Siemens AG, T RDA IOT
> Corporate Competence Center Embedded Linux
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