diff options
Diffstat (limited to 'arch/powerpc/kernel/head_64.S')
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index b61363d..843f71a 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -178,6 +178,21 @@ exception_marker: #include "exceptions-64s.S" #endif +#ifdef CONFIG_PPC_BOOK3E +_GLOBAL(fsl_secondary_thread_init) +BEGIN_FTR_SECTION + /* Enable branch prediction */ + lis r3,BUCSR_INIT@h + ori r3,r3,BUCSR_INIT@l + mtspr SPRN_BUCSR,r3 + isync + + mfspr r3, SPRN_PIR + rlwimi r3, r3, 30, 2, 30 + mtspr SPRN_PIR, r3 +END_FTR_SECTION_IFSET(CPU_FTR_SMT) +#endif + _GLOBAL(generic_secondary_thread_init) mr r24,r3 @@ -314,7 +329,7 @@ _STATIC(__mmu_off) * * r5 != NULL -> OF entry, we go to prom_init, "legacy" parameter content * in r3...r7 - * + * * r5 == NULL -> kexec style entry. r3 is a physical pointer to the * DT block, r4 is a physical pointer to the kernel itself * @@ -535,7 +550,7 @@ __secondary_start_pmac_0: b 1f li r24,3 1: - + _GLOBAL(pmac_secondary_start) /* turn on 64-bit mode */ bl .enable_64b_mode @@ -641,7 +656,7 @@ __secondary_start: RFI b . /* prevent speculative execution */ -/* +/* * Running with relocation on at this point. All we want to do is * zero the stack back-chain pointer and get the TOC virtual address * before going into C code. @@ -777,7 +792,7 @@ _INIT_STATIC(start_here_multiplatform) mtspr SPRN_SRR1,r4 RFI b . /* prevent speculative execution */ - + /* This is where all platforms converge execution */ _INIT_GLOBAL(start_here_common) /* relocation is on at this point */ @@ -789,6 +804,12 @@ _INIT_GLOBAL(start_here_common) /* Do more system initializations in virtual mode */ bl .setup_system +#ifdef CONFIG_PPC_BOOK3E +BEGIN_FTR_SECTION + bl .fsl_enable_threads +END_FTR_SECTION_IFSET(CPU_FTR_SMT) +#endif + /* Mark interrupts soft and hard disabled (they might be enabled * in the PACA when doing hotplug) */ |