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feat(plat): add platform API that gets cluster ID

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This patch adds an API(plat_cluster_id_by_mpidr)
that retrieves the cluster ID by looking at
the MPIDR_EL1 for platforms that have ARM_PLAT_MT set

Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: I0266f2e49a3114d169a7708d7ddbd4f6229a7a41
This commit is contained in:
Arvind Ram Prakash 2024-04-25 18:36:01 -05:00
parent bbbc32c904
commit e6ae019a84
2 changed files with 10 additions and 0 deletions
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2
include/plat/arm/common/plat_arm.h
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@ -383,6 +383,8 @@ int arm_get_rotpk_info_dev(void **key_ptr, unsigned int *key_len,
unsigned int plat_arm_get_cpu_pe_count(u_register_t mpidr);
#endif
unsigned int plat_cluster_id_by_mpidr(u_register_t mpidr);
/*
* This function is called after loading SCP_BL2 image and it is used to perform
* any platform-specific actions required to handle the SCP firmware.

8
plat/arm/board/tc/tc_topology.c
View file

@ -65,3 +65,11 @@ unsigned int plat_arm_get_cpu_pe_count(u_register_t mpidr)
return PLAT_MAX_PE_PER_CPU;
}
#endif
/******************************************************************************
* Return the cluster ID of current CPU
*****************************************************************************/
unsigned int plat_cluster_id_by_mpidr(u_register_t mpidr)
{
return MPIDR_AFFLVL2_VAL(mpidr);
}