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ARM: socfpga: make sure socfpga_cpu1start_addr is properly flushed 

Make sure socfpga_cpu1start_addr is properly flushed from it's cache line so
that secondary cpu's can see it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
hifive-unleashed-5.1
Russell King 2015-02-25 10:24:25 -06:00 committed by Dinh Nguyen
parent 78c03c7af8
commit cee9b8d6b8
1 changed files with 5 additions and 0 deletions
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5
arch/arm/mach-socfpga/socfpga.c
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@ -23,6 +23,7 @@
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/cacheflush.h>
#include "core.h"
@ -73,6 +74,10 @@ void __init socfpga_sysmgr_init(void)
(u32 *) &socfpga_cpu1start_addr))
pr_err("SMP: Need cpu1-start-addr in device tree.\n");
/* Ensure that socfpga_cpu1start_addr is visible to other CPUs */
smp_wmb();
sync_cache_w(&socfpga_cpu1start_addr);
sys_manager_base_addr = of_iomap(np, 0);
np = of_find_compatible_node(NULL, NULL, "altr,rst-mgr");