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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-07 14:50:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-07 14:50:14 -0800
commitd074b104cefcb6e8ded55a53e62fed59a246f55d (patch)
tree8c5b3a3992c5abab8b41b6e1f2837bc46f82b207 /arch/arm/mach-shmobile/hotplug.c
parent31b6ca0af758a88e5e769b48cc6dde037ee37b96 (diff)
parentc413521eb4e2d7ffd5ce432a144708d479054bd3 (diff)
Merge branch 'rmobile-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'rmobile-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (67 commits) ARM: mach-shmobile: update for SMP changes. ARM: mach-shmobile: update for GIC changes. ARM: mach-shmobile: Fix up clkdev fallout for SH73A0. dma: shdma: don't register the global die notifier multiple times ARM: mach-shmobile: Rely on run-time IRQ handlers ARM: mach-shmobile: Run-time IRQ handler for GIC ARM: mach-shmobile: Run-time IRQ handler for INTCA ARM: mach-shmobile: Enable CONFIG_MULTI_IRQ_HANDLER ARM: mach-shmobile: Use shared GIC entry macros ARM: mach-shmobile: mackerel: Add zboot support ARM: mach-shmobile: mackerel: Add HDMI sound support ARM: mach-shmobile: mackerel: add HDMI video support ARM: mach-shmobile: ap4evb: fixup clk_put timing of fsib_clk ARM: mach-shmobile: sh73a0: fix div4 table ARM: mach-shmobile: ap4/mackerel: modify wrong comment out of USB ARM: mach-shmobile: Mackerel VGA camera support mmc: sh_mmcif: make DMA support by the driver unconditional ARM: mach-shmobile: Add eMMC support through MMCIF on AG5EVM ARM: mach-shmobile: Use pullups for AG5EVM KEYSC pins ARM: mach-shmobile: sh73a0 GPIO pullup improvement ...
Diffstat (limited to 'arch/arm/mach-shmobile/hotplug.c')
-rw-r--r--arch/arm/mach-shmobile/hotplug.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/hotplug.c b/arch/arm/mach-shmobile/hotplug.c
new file mode 100644
index 00000000000..238a0d97d2d
--- /dev/null
+++ b/arch/arm/mach-shmobile/hotplug.c
@@ -0,0 +1,41 @@
+/*
+ * SMP support for R-Mobile / SH-Mobile
+ *
+ * Copyright (C) 2010 Magnus Damm
+ *
+ * Based on realview, Copyright (C) 2002 ARM Ltd, All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/smp.h>
+
+int platform_cpu_kill(unsigned int cpu)
+{
+ return 1;
+}
+
+void platform_cpu_die(unsigned int cpu)
+{
+ while (1) {
+ /*
+ * here's the WFI
+ */
+ asm(".word 0xe320f003\n"
+ :
+ :
+ : "memory", "cc");
+ }
+}
+
+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;
+}