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authorArnd Bergmann <arnd@arndb.de>2011-11-02 02:46:55 +0100
committerArnd Bergmann <arnd@arndb.de>2011-11-02 02:46:55 +0100
commitabc3f126ac736280c68db6472eb0040ddf6e1b1f (patch)
tree4e3333cde6da6c49dcd81920410bf5a33055f03a /arch/arm/mach-imx/hotplug.c
parentb8df0ea26ac17c9a073f235c7fdfbdd1851b59ea (diff)
parent8bcb97659656042f3132b2814b19709856aa1335 (diff)
Merge branch 'imx/imx6q' into next/soc
Conflicts: Documentation/devicetree/bindings/arm/fsl.txt arch/arm/Kconfig arch/arm/Kconfig.debug arch/arm/plat-mxc/include/mach/common.h
Diffstat (limited to 'arch/arm/mach-imx/hotplug.c')
-rw-r--r--arch/arm/mach-imx/hotplug.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/hotplug.c b/arch/arm/mach-imx/hotplug.c
new file mode 100644
index 000000000000..89493abd497c
--- /dev/null
+++ b/arch/arm/mach-imx/hotplug.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/errno.h>
+#include <asm/cacheflush.h>
+#include <mach/common.h>
+
+int platform_cpu_kill(unsigned int cpu)
+{
+ return 1;
+}
+
+/*
+ * platform-specific code to shutdown a CPU
+ *
+ * Called with IRQs disabled
+ */
+void platform_cpu_die(unsigned int cpu)
+{
+ flush_cache_all();
+ imx_enable_cpu(cpu, false);
+ cpu_do_idle();
+
+ /* We should never return from idle */
+ panic("cpu %d unexpectedly exit from shutdown\n", cpu);
+}
+
+int platform_cpu_disable(unsigned int cpu)
+{
+ /*
+ * we don't allow CPU 0 to be shutdown (it is still too special
+ * e.g. clock tick interrupts)
+ */
+ return cpu == 0 ? -EPERM : 0;
+}