diff options
| author | Summer Qin <summer.qin@arm.com> | 2017-02-28 16:46:17 +0000 |
|---|---|---|
| committer | Summer Qin <summer.qin@arm.com> | 2017-03-27 14:53:43 +0100 |
| commit | d8d6cf247b1b5691d23e50c16377c0e2248cdd97 (patch) | |
| tree | 0f205399d29d296d50de33b95ef4e3c45cc951e0 /include/lib/aarch64 | |
| parent | d6845d3dc3030335e9c13cf37f9ba1333a776629 (diff) | |
ARM platforms: Add support for MT bit in MPIDR
This patch modifies some of the functions in ARM platform layer to cater
for the case when multi-threading `MT` is set in MPIDR. A new build flag
`ARM_PLAT_MT` is added, and when enabled, the functions accessing MPIDR
now assume that the `MT` bit is set for the platform and access the bit
fields accordingly.
Also, a new API plat_arm_get_cpu_pe_count is added when `ARM_PLAT_MT` is
enabled, returning the PE count within the physical cpu corresponding to
`mpidr`.
Change-Id: I04ccf212ac3054a60882761f4087bae299af13cb
Signed-off-by: Summer Qin <summer.qin@arm.com>
Diffstat (limited to 'include/lib/aarch64')
| -rw-r--r-- | include/lib/aarch64/arch.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/lib/aarch64/arch.h b/include/lib/aarch64/arch.h index 5876ce81..a854e961 100644 --- a/include/lib/aarch64/arch.h +++ b/include/lib/aarch64/arch.h @@ -49,6 +49,7 @@ /******************************************************************************* * MPIDR macros ******************************************************************************/ +#define MPIDR_MT_MASK (1 << 24) #define MPIDR_CPU_MASK MPIDR_AFFLVL_MASK #define MPIDR_CLUSTER_MASK MPIDR_AFFLVL_MASK << MPIDR_AFFINITY_BITS #define MPIDR_AFFINITY_BITS 8 |