From 866beaa0aa95deeba467db3dcb605ba3a5048a5b Mon Sep 17 00:00:00 2001 From: Kyle Evans Date: Wed, 26 Oct 2022 22:46:45 -0500 Subject: [PATCH] psci: set psci_present as early as possible psci_attach is way too late to provide the intended semantics for psci_present. psci calls can be made immediately after psci_init(), called way earlier at SI_SUB_CPU + SI_ORDER_FIRST, and we need it to be valid as early as we can possibly call a psci function. This fixes booting RPi3+4 with the in-review spintable patch; rpi3-psci-monitor patches the FDT to add a PSCI node, but it doesn't patch each cpus' enable-method. Because of this, we would stall the boot while enabling CPU 1 as we saw a valid looking enable-method and "no" functional PSCI and attempted to use the spintable rather than simply not starting secondary APs. Fixes: 2218070b2c3c32 ("psci: finish psci_present implementation") Reported by: karels --- sys/dev/psci/psci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/dev/psci/psci.c b/sys/dev/psci/psci.c index db308a550d3a..d7c89bf058f8 100644 --- a/sys/dev/psci/psci.c +++ b/sys/dev/psci/psci.c @@ -146,6 +146,7 @@ psci_init(void *dummy) } psci_callfn = new_callfn; + psci_present = true; } /* This needs to be before cpu_mp at SI_SUB_CPU, SI_ORDER_THIRD */ SYSINIT(psci_start, SI_SUB_CPU, SI_ORDER_FIRST, psci_init, NULL); @@ -344,7 +345,6 @@ psci_attach(device_t dev, psci_initfn_t psci_init, int default_version) return (ENXIO); psci_softc = sc; - psci_present = true; return (0); }