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[src/trunk]: src/sys/arch/arm/fdt flush the dcache in cpu_enable_psci() befor...
details: https://anonhg.NetBSD.org/src/rev/d0685292044f
branches: trunk
changeset: 845769:d0685292044f
user: bad <bad%NetBSD.org@localhost>
date: Tue Oct 15 17:25:02 2019 +0000
description:
flush the dcache in cpu_enable_psci() before calling psci_cpu_on().
fixes the kernel hanging with multiple "mpstart" on (at least) NanoPi R1.
OK jmcneill@, skrll@
XXX pullup-9
diffstat:
sys/arch/arm/fdt/cpu_fdt.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diffs (26 lines):
diff -r 7f39d6049fc8 -r d0685292044f sys/arch/arm/fdt/cpu_fdt.c
--- a/sys/arch/arm/fdt/cpu_fdt.c Tue Oct 15 17:19:05 2019 +0000
+++ b/sys/arch/arm/fdt/cpu_fdt.c Tue Oct 15 17:25:02 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: cpu_fdt.c,v 1.25 2019/04/13 19:15:25 jmcneill Exp $ */
+/* $NetBSD: cpu_fdt.c,v 1.26 2019/10/15 17:25:02 bad Exp $ */
/*-
* Copyright (c) 2017 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -30,7 +30,7 @@
#include "psci_fdt.h"
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu_fdt.c,v 1.25 2019/04/13 19:15:25 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu_fdt.c,v 1.26 2019/10/15 17:25:02 bad Exp $");
#include <sys/param.h>
#include <sys/atomic.h>
@@ -348,6 +348,7 @@
fdtbus_get_reg64(phandle, 0, &mpidr, NULL);
+ cpu_dcache_wbinv_all();
ret = psci_cpu_on(mpidr, cpu_fdt_mpstart_pa(), 0);
if (ret != PSCI_SUCCESS)
return EIO;
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