aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/include
diff options
context:
space:
mode:
authorLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2012-11-15 17:30:32 +0000
committerLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2012-11-19 15:44:33 +0000
commitdca463daa0151c5bbbd8ec8fd42882a3966d3c44 (patch)
tree37cb674e65b14c2308898bb9a88f57edd946c906 /arch/arm/include
parent77b67063bb6bce6d475e910d3b886a606d0d91f7 (diff)
ARM: kernel: enhance MPIDR macro definitions
Kernel subsystems other than the topology layer need the MPIDR mask definitions to access the MPIDR without relying on hardcoded masks. This patch moves the MPIDR register masks definition to a header file and defines a macro to simplify access to MPIDR bit fields representing affinity levels. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org>
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/cputype.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h
index cb47d28cbe1..a59dcb5ab5f 100644
--- a/arch/arm/include/asm/cputype.h
+++ b/arch/arm/include/asm/cputype.h
@@ -25,6 +25,19 @@
#define CPUID_EXT_ISAR4 "c2, 4"
#define CPUID_EXT_ISAR5 "c2, 5"
+#define MPIDR_SMP_BITMASK (0x3 << 30)
+#define MPIDR_SMP_VALUE (0x2 << 30)
+
+#define MPIDR_MT_BITMASK (0x1 << 24)
+
+#define MPIDR_HWID_BITMASK 0xFFFFFF
+
+#define MPIDR_LEVEL_BITS 8
+#define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1)
+
+#define MPIDR_AFFINITY_LEVEL(mpidr, level) \
+ ((mpidr >> (MPIDR_LEVEL_BITS * level)) & MPIDR_LEVEL_MASK)
+
extern unsigned int processor_id;
#ifdef CONFIG_CPU_CP15