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authorIngo Molnar <mingo@elte.hu>2009-06-17 14:52:15 +0400
committerIngo Molnar <mingo@elte.hu>2009-06-17 14:56:49 +0400
commiteadb8a091b27a840de7450f84ecff5ef13476424 (patch)
tree58c3782d40def63baa8167f3d31e3048cb4c7660 /arch/arm/plat-omap/include/mach/smp.h
parent73874005cd8800440be4299bd095387fff4b90ac (diff)
parent65795efbd380a832ae508b04dba8f8e53f0b84d9 (diff)
downloadlinux-eadb8a091b27a840de7450f84ecff5ef13476424.tar.xz
Merge branch 'linus' into tracing/hw-breakpoints
Conflicts: arch/x86/Kconfig arch/x86/kernel/traps.c arch/x86/power/cpu.c arch/x86/power/cpu_32.c kernel/Makefile Semantic conflict: arch/x86/kernel/hw_breakpoint.c Merge reason: Resolve the conflicts, move from put_cpu_no_sched() to put_cpu() in arch/x86/kernel/hw_breakpoint.c. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/arm/plat-omap/include/mach/smp.h')
-rw-r--r--arch/arm/plat-omap/include/mach/smp.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/mach/smp.h b/arch/arm/plat-omap/include/mach/smp.h
new file mode 100644
index 000000000000..dcaa8fde7063
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/smp.h
@@ -0,0 +1,51 @@
+/*
+ * OMAP4 machine specific smp.h
+ *
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Author:
+ * Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * Interface functions needed for the SMP. This file is based on arm
+ * realview smp platform.
+ * Copyright (c) 2003 ARM Limited.
+ *
+ * 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.
+ */
+#ifndef OMAP_ARCH_SMP_H
+#define OMAP_ARCH_SMP_H
+
+#include <asm/hardware/gic.h>
+
+/*
+ * set_event() is used to wake up secondary core from wfe using sev. ROM
+ * code puts the second core into wfe(standby).
+ *
+ */
+#define set_event() __asm__ __volatile__ ("sev" : : : "memory")
+
+/* Needed for secondary core boot */
+extern void omap_secondary_startup(void);
+
+/*
+ * We use Soft IRQ1 as the IPI
+ */
+static inline void smp_cross_call(const struct cpumask *mask)
+{
+ gic_raise_softirq(mask, 1);
+}
+
+/*
+ * Read MPIDR: Multiprocessor affinity register
+ */
+#define hard_smp_processor_id() \
+ ({ \
+ unsigned int cpunum; \
+ __asm__("mrc p15, 0, %0, c0, c0, 5" \
+ : "=r" (cpunum)); \
+ cpunum &= 0x0F; \
+ })
+
+#endif