mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 23:23:55 +08:00
bca7a5a049
Remove the majority of cache flushing calls from the individual platform files. This is now handled by the core code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
39 lines
734 B
C
39 lines
734 B
C
/*
|
|
* CPU hotplug support for CSR Marco dual-core SMP SoCs
|
|
*
|
|
* Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
|
|
*
|
|
* Licensed under GPLv2 or later.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/smp.h>
|
|
|
|
#include <asm/smp_plat.h>
|
|
|
|
static inline void platform_do_lowpower(unsigned int cpu)
|
|
{
|
|
/* we put the platform to just WFI */
|
|
for (;;) {
|
|
__asm__ __volatile__("dsb\n\t" "wfi\n\t"
|
|
: : : "memory");
|
|
if (pen_release == cpu_logical_map(cpu)) {
|
|
/*
|
|
* OK, proper wakeup, we're done
|
|
*/
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* platform-specific code to shutdown a CPU
|
|
*
|
|
* Called with IRQs disabled
|
|
*/
|
|
void __ref sirfsoc_cpu_die(unsigned int cpu)
|
|
{
|
|
platform_do_lowpower(cpu);
|
|
}
|