projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 69c31b7a SG |
1 | /* |
| 2 | * Copyright 2011 Freescale Semiconductor, Inc. | |
| 3 | * Copyright 2011 Linaro Ltd. | |
| 4 | * | |
| 5 | * The code contained herein is licensed under the GNU General Public | |
| 6 | * License. You may obtain a copy of the GNU General Public License | |
| 7 | * Version 2 or later at the following locations: | |
| 8 | * | |
| 9 | * http://www.opensource.org/licenses/gpl-license.html | |
| 10 | * http://www.gnu.org/copyleft/gpl.html | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/errno.h> | |
| 14 | #include <asm/cacheflush.h> | |
| 15 | #include <mach/common.h> | |
| 16 | ||
| 17 | int platform_cpu_kill(unsigned int cpu) | |
| 18 | { | |
| 19 | return 1; | |
| 20 | } | |
| 21 | ||
| 22 | /* | |
| 23 | * platform-specific code to shutdown a CPU | |
| 24 | * | |
| 25 | * Called with IRQs disabled | |
| 26 | */ | |
| 27 | void platform_cpu_die(unsigned int cpu) | |
| 28 | { | |
| 29 | flush_cache_all(); | |
| 30 | imx_enable_cpu(cpu, false); | |
| 31 | cpu_do_idle(); | |
| 32 | ||
| 33 | /* We should never return from idle */ | |
| 34 | panic("cpu %d unexpectedly exit from shutdown\n", cpu); | |
| 35 | } | |
| 36 | ||
| 37 | int platform_cpu_disable(unsigned int cpu) | |
| 38 | { | |
| 39 | /* | |
| 40 | * we don't allow CPU 0 to be shutdown (it is still too special | |
| 41 | * e.g. clock tick interrupts) | |
| 42 | */ | |
| 43 | return cpu == 0 ? -EPERM : 0; | |
| 44 | } |