Le ven. 20 nov. 2020 à 08:09, Peng Fan <[email protected]> a écrit :
> > 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.
that would be great to share!
>
>
> 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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--
François-Frédéric Ozog | *Director Linaro Edge & Fog Computing Group*
T: +33.67221.6485
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