diff options
Diffstat (limited to 'arch/arm/cpu/armv7/psci.S')
| -rw-r--r-- | arch/arm/cpu/armv7/psci.S | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/psci.S b/arch/arm/cpu/armv7/psci.S index bf11a34e54..12ad09b96c 100644 --- a/arch/arm/cpu/armv7/psci.S +++ b/arch/arm/cpu/armv7/psci.S @@ -99,4 +99,12 @@ _smc_psci: pop {r4-r7, lr} movs pc, lr @ Return to the kernel +@ Requires dense and single-cluster CPU ID space +ENTRY(psci_get_cpu_id) + mrc p15, 0, r0, c0, c0, 5 /* read MPIDR */ + and r0, r0, #0xff /* return CPU ID in cluster */ + bx lr +ENDPROC(psci_get_cpu_id) +.weak psci_get_cpu_id + .popsection |
