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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-09-04 11:14:20 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-10-04 15:20:45 -0400
commit067173526c3bbc2eaeefcf6b7b2a9d998b9e8042 (patch)
tree4da794388079afaf0f43a5aadb750e097846e538 /arch/arm/mach-ux500/include
parent971acb9b420ea1662dd3c48184c4315f87643be5 (diff)
ARM: Provide common header for hard_smp_processor_id()
Provide a common header to read the SMP CPU number from the MPIDR. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ux500/include')
-rw-r--r--arch/arm/mach-ux500/include/mach/smp.h9
1 files changed, 1 insertions, 8 deletions
diff --git a/arch/arm/mach-ux500/include/mach/smp.h b/arch/arm/mach-ux500/include/mach/smp.h
index b59f7bc9725d..197e8417375e 100644
--- a/arch/arm/mach-ux500/include/mach/smp.h
+++ b/arch/arm/mach-ux500/include/mach/smp.h
@@ -10,18 +10,11 @@
10#define ASMARM_ARCH_SMP_H 10#define ASMARM_ARCH_SMP_H
11 11
12#include <asm/hardware/gic.h> 12#include <asm/hardware/gic.h>
13#include <asm/smp_mpidr.h>
13 14
14/* This is required to wakeup the secondary core */ 15/* This is required to wakeup the secondary core */
15extern void u8500_secondary_startup(void); 16extern void u8500_secondary_startup(void);
16 17
17#define hard_smp_processor_id() \
18 ({ \
19 unsigned int cpunum; \
20 __asm__("mrc p15, 0, %0, c0, c0, 5" \
21 : "=r" (cpunum)); \
22 cpunum &= 0x0F; \
23 })
24
25/* 18/*
26 * We use IRQ1 as the IPI 19 * We use IRQ1 as the IPI
27 */ 20 */