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[src/trunk]: src/sys/arch Flush the BP cache just before starting APs so that...
details: https://anonhg.NetBSD.org/src/rev/ec8fd8c7d8e1
branches: trunk
changeset: 997611:ec8fd8c7d8e1
user: skrll <skrll%NetBSD.org@localhost>
date: Sat Mar 16 10:05:40 2019 +0000
description:
Flush the BP cache just before starting APs so that cache coherency starts
with a correct view.
diffstat:
sys/arch/arm/arm32/arm32_boot.c | 10 ++++++++--
sys/arch/evbarm/fdt/fdt_machdep.c | 7 +++++--
sys/arch/evbarm/nitrogen6/nitrogen6_machdep.c | 7 +++++--
sys/arch/evbarm/zynq/zynq_machdep.c | 7 +++++--
4 files changed, 23 insertions(+), 8 deletions(-)
diffs (115 lines):
diff -r aa6041b74d14 -r ec8fd8c7d8e1 sys/arch/arm/arm32/arm32_boot.c
--- a/sys/arch/arm/arm32/arm32_boot.c Sat Mar 16 08:03:03 2019 +0000
+++ b/sys/arch/arm/arm32/arm32_boot.c Sat Mar 16 10:05:40 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: arm32_boot.c,v 1.32 2019/01/27 02:08:37 pgoyette Exp $ */
+/* $NetBSD: arm32_boot.c,v 1.33 2019/03/16 10:05:40 skrll Exp $ */
/*
* Copyright (c) 2002, 2003, 2005 Genetec Corporation. All rights reserved.
@@ -122,7 +122,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(1, "$NetBSD: arm32_boot.c,v 1.32 2019/01/27 02:08:37 pgoyette Exp $");
+__KERNEL_RCSID(1, "$NetBSD: arm32_boot.c,v 1.33 2019/03/16 10:05:40 skrll Exp $");
#include "opt_arm_debug.h"
#include "opt_cputypes.h"
@@ -324,6 +324,12 @@
#ifdef MULTIPROCESSOR
mutex_init(&cpu_hatch_lock, MUTEX_DEFAULT, IPL_NONE);
+
+ /*
+ * Ensure BP cache is flushed to memory so that APs start cache
+ * coherency with correct view.
+ */
+ cpu_dcache_wbinv_all();
#endif
VPRINTF("done.\n");
diff -r aa6041b74d14 -r ec8fd8c7d8e1 sys/arch/evbarm/fdt/fdt_machdep.c
--- a/sys/arch/evbarm/fdt/fdt_machdep.c Sat Mar 16 08:03:03 2019 +0000
+++ b/sys/arch/evbarm/fdt/fdt_machdep.c Sat Mar 16 10:05:40 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: fdt_machdep.c,v 1.58 2019/01/31 13:26:21 skrll Exp $ */
+/* $NetBSD: fdt_machdep.c,v 1.59 2019/03/16 10:05:40 skrll Exp $ */
/*-
* Copyright (c) 2015-2017 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fdt_machdep.c,v 1.58 2019/01/31 13:26:21 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fdt_machdep.c,v 1.59 2019/03/16 10:05:40 skrll Exp $");
#include "opt_machdep.h"
#include "opt_bootconfig.h"
@@ -545,6 +545,9 @@
u_int sp = initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, fdt_physmem,
nfdt_physmem);
+ /*
+ * initarm_commmon flushes cache if required before AP start
+ */
error = 0;
if ((boothowto & RB_MD1) == 0) {
VPRINTF("mpstart\n");
diff -r aa6041b74d14 -r ec8fd8c7d8e1 sys/arch/evbarm/nitrogen6/nitrogen6_machdep.c
--- a/sys/arch/evbarm/nitrogen6/nitrogen6_machdep.c Sat Mar 16 08:03:03 2019 +0000
+++ b/sys/arch/evbarm/nitrogen6/nitrogen6_machdep.c Sat Mar 16 10:05:40 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: nitrogen6_machdep.c,v 1.15 2019/01/21 07:46:40 skrll Exp $ */
+/* $NetBSD: nitrogen6_machdep.c,v 1.16 2019/03/16 10:05:40 skrll Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: nitrogen6_machdep.c,v 1.15 2019/01/21 07:46:40 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: nitrogen6_machdep.c,v 1.16 2019/03/16 10:05:40 skrll Exp $");
#include "opt_evbarm_boardtype.h"
#include "opt_arm_debug.h"
@@ -386,6 +386,9 @@
#endif
u_int sp = initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, bp, nbp);
+ /*
+ * initarm_commmon flushes cache if required before AP start
+ */
VPRINTF("mpstart\n");
nitrogen6_mpstart();
diff -r aa6041b74d14 -r ec8fd8c7d8e1 sys/arch/evbarm/zynq/zynq_machdep.c
--- a/sys/arch/evbarm/zynq/zynq_machdep.c Sat Mar 16 08:03:03 2019 +0000
+++ b/sys/arch/evbarm/zynq/zynq_machdep.c Sat Mar 16 10:05:40 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: zynq_machdep.c,v 1.8 2019/01/31 13:06:10 skrll Exp $ */
+/* $NetBSD: zynq_machdep.c,v 1.9 2019/03/16 10:05:40 skrll Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
@@ -29,7 +29,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: zynq_machdep.c,v 1.8 2019/01/31 13:06:10 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: zynq_machdep.c,v 1.9 2019/03/16 10:05:40 skrll Exp $");
#include "opt_evbarm_boardtype.h"
#include "opt_arm_debug.h"
@@ -340,6 +340,9 @@
u_int sp = initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, NULL, 0);
+ /*
+ * initarm_commmon flushes cache if required before AP start
+ */
VPRINTF("mpstart\n");
zynq_mpstart();
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