git: d463f7c7a726 - stable/13 - psci: split off psci_reboot from psci_shutdown

The branch stable/13 has been updated by avg:

URL: https://cgit.FreeBSD.org/src/commit/?id=d463f7c7a726842dca50e87b79d401f5d09dd196

commit d463f7c7a726842dca50e87b79d401f5d09dd196
Author:     Andriy Gapon <avg@FreeBSD.org>
AuthorDate: 2021-07-09 15:01:57 +0000
Commit:     Andriy Gapon <avg@FreeBSD.org>
CommitDate: 2024-03-16 15:14:47 +0000

    psci: split off psci_reboot from psci_shutdown
    
    Priority of psci_reboot set so that it is run after shutdown_panic is
    executed.  This is to provide uniform experience with other platforms.
    
    (cherry picked from commit 0f354b2b588b60e2ef119ff2f480f7905c5db587)
---
 sys/dev/psci/psci.c | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/sys/dev/psci/psci.c b/sys/dev/psci/psci.c
index 3d9fe230d1a2..a656a1365067 100644
--- a/sys/dev/psci/psci.c
+++ b/sys/dev/psci/psci.c
@@ -124,7 +124,6 @@ static struct ofw_compat_data compat_data[] = {
 #endif
 
 static int psci_attach(device_t, psci_initfn_t, int);
-static void psci_shutdown(void *, int);
 
 static int psci_find_callfn(psci_callfn_t *);
 static int psci_def_callfn(register_t, register_t, register_t, register_t,
@@ -472,12 +471,24 @@ psci_shutdown(void *xsc, int howto)
 	if (psci_softc == NULL)
 		return;
 
-	/* PSCI system_off and system_reset werent't supported in v0.1. */
 	if ((howto & RB_POWEROFF) != 0)
 		fn = psci_softc->psci_fnids[PSCI_FN_SYSTEM_OFF];
-	else if ((howto & RB_HALT) == 0)
-		fn = psci_softc->psci_fnids[PSCI_FN_SYSTEM_RESET];
+	if (fn)
+		psci_call(fn, 0, 0, 0);
+
+	/* System reset and off do not return. */
+}
 
+static void
+psci_reboot(void *xsc, int howto)
+{
+	uint32_t fn = 0;
+
+	if (psci_softc == NULL)
+		return;
+
+	if ((howto & RB_HALT) == 0)
+		fn = psci_softc->psci_fnids[PSCI_FN_SYSTEM_RESET];
 	if (fn)
 		psci_call(fn, 0, 0, 0);
 
@@ -488,7 +499,7 @@ void
 psci_reset(void)
 {
 
-	psci_shutdown(NULL, 0);
+	psci_reboot(NULL, 0);
 }
 
 #ifdef FDT
@@ -586,6 +597,10 @@ psci_v0_2_init(device_t dev, int default_version)
 		EVENTHANDLER_REGISTER(shutdown_final, psci_shutdown, sc,
 		    SHUTDOWN_PRI_LAST);
 
+		/* Handle reboot after shutdown_panic. */
+		EVENTHANDLER_REGISTER(shutdown_final, psci_reboot, sc,
+		    SHUTDOWN_PRI_LAST + 150);
+
 		return (0);
 	}