diff options
Diffstat (limited to 'arch/powerpc/kernel/head_64.S')
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index a95145d7f61b..36ff6f03f903 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -180,6 +180,28 @@ exception_marker: #include "exceptions-64s.S" #endif +#ifdef CONFIG_PPC_BOOK3E +_GLOBAL(fsl_secondary_thread_init) + /* Enable branch prediction */ + lis r3,BUCSR_INIT@h + ori r3,r3,BUCSR_INIT@l + mtspr SPRN_BUCSR,r3 + isync + + /* + * Fix PIR to match the linear numbering in the device tree. + * + * On e6500, the reset value of PIR uses the low three bits for + * the thread within a core, and the upper bits for the core + * number. There are two threads per core, so shift everything + * but the low bit right by two bits so that the cpu numbering is + * continuous. + */ + mfspr r3, SPRN_PIR + rlwimi r3, r3, 30, 2, 30 + mtspr SPRN_PIR, r3 +#endif + _GLOBAL(generic_secondary_thread_init) mr r24,r3 |