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69c31b7a6e
It adds smp and cpu hotplug support for imx6q. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
45 lines
985 B
C
45 lines
985 B
C
/*
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* Copyright 2011 Freescale Semiconductor, Inc.
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* Copyright 2011 Linaro Ltd.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/errno.h>
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#include <asm/cacheflush.h>
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#include <mach/common.h>
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int platform_cpu_kill(unsigned int cpu)
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{
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return 1;
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}
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/*
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* platform-specific code to shutdown a CPU
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*
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* Called with IRQs disabled
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*/
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void platform_cpu_die(unsigned int cpu)
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{
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flush_cache_all();
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imx_enable_cpu(cpu, false);
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cpu_do_idle();
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/* We should never return from idle */
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panic("cpu %d unexpectedly exit from shutdown\n", cpu);
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}
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int platform_cpu_disable(unsigned int cpu)
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{
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/*
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* we don't allow CPU 0 to be shutdown (it is still too special
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* e.g. clock tick interrupts)
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*/
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return cpu == 0 ? -EPERM : 0;
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}
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