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| author | Julien Grall <julien.grall@linaro.org> | 2013-09-26 12:09:40 +0100 |
|---|---|---|
| committer | Ian Campbell <ian.campbell@citrix.com> | 2013-09-26 15:44:58 +0100 |
| commit | ff9b41bb347b08114dd89cdc8e45bfc1d1b12511 (patch) | |
| tree | 54b381b51d24a8303c3b129542816e5f75ffb1e2 /xen/include | |
| parent | a22a8e48eee4d1157eeef2b9c1b81ef9124dda4e (diff) | |
| download | xen-ff9b41bb347b08114dd89cdc8e45bfc1d1b12511.tar.gz xen-ff9b41bb347b08114dd89cdc8e45bfc1d1b12511.tar.bz2 xen-ff9b41bb347b08114dd89cdc8e45bfc1d1b12511.zip | |
xen/arm: Dissociate logical and hardware CPU ID
Introduce cpu_logical_map to associate a logical CPU ID to an hardware CPU ID.
This map will be filled during Xen boot via the device tree. Each CPU node
contains a "reg" property which contains the hardware ID (ie MPIDR[0:23]).
Also move /cpus parsing later so we can use the dt_* API.
Signed-off-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Diffstat (limited to 'xen/include')
| -rw-r--r-- | xen/include/asm-arm/processor.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/xen/include/asm-arm/processor.h b/xen/include/asm-arm/processor.h index 808567e5df..06464227e3 100644 --- a/xen/include/asm-arm/processor.h +++ b/xen/include/asm-arm/processor.h @@ -13,6 +13,7 @@ #define MPIDR_AFF0_SHIFT (0) #define MPIDR_AFF0_MASK (0xff << MPIDR_AFF0_SHIFT) #define MPIDR_HWID_MASK 0xffffff +#define MPIDR_INVALID (~MPIDR_HWID_MASK) /* TTBCR Translation Table Base Control Register */ #define TTBCR_EAE 0x80000000 @@ -230,6 +231,9 @@ extern void identify_cpu(struct cpuinfo_arm *); extern struct cpuinfo_arm cpu_data[]; #define current_cpu_data cpu_data[smp_processor_id()] +extern u32 __cpu_logical_map[]; +#define cpu_logical_map(cpu) __cpu_logical_map[cpu] + union hsr { uint32_t bits; struct { |