diff options
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 22 | ||||
| -rw-r--r-- | arch/powerpc/kernel/prom.c | 10 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup-common.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 6 |
4 files changed, 35 insertions, 9 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 diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 613a860a203c..0448b1e9c0ae 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -309,12 +309,10 @@ static int __init early_init_dt_scan_cpus(unsigned long node, /* Get physical cpuid */ intserv = of_get_flat_dt_prop(node, "ibm,ppc-interrupt-server#s", &len); - if (intserv) { - nthreads = len / sizeof(int); - } else { - intserv = of_get_flat_dt_prop(node, "reg", NULL); - nthreads = 1; - } + if (!intserv) + intserv = of_get_flat_dt_prop(node, "reg", &len); + + nthreads = len / sizeof(int); /* * Now see if any of these threads match our boot cpu. diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index e239df3768ac..1bb4dcde0dcc 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -456,18 +456,20 @@ void __init smp_setup_cpu_maps(void) intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); if (intserv) { - nthreads = len / sizeof(int); DBG(" ibm,ppc-interrupt-server#s -> %d threads\n", nthreads); } else { DBG(" no ibm,ppc-interrupt-server#s -> 1 thread\n"); - intserv = of_get_property(dn, "reg", NULL); + intserv = of_get_property(dn, "reg", &len); if (!intserv) { cpu_be = cpu_to_be32(cpu); intserv = &cpu_be; /* assume logical == phys */ + len = 4; } } + nthreads = len / sizeof(int); + for (j = 0; j < nthreads && cpu < nr_cpu_ids; j++) { DBG(" thread %d -> cpu %d (hard id %d)\n", j, cpu, be32_to_cpu(intserv[j])); diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index ee082d771178..6d06947e7d21 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -507,7 +507,11 @@ void __init setup_system(void) check_smt_enabled(); setup_tlb_core_data(); -#ifdef CONFIG_SMP + /* + * Freescale Book3e parts spin in a loop provided by firmware, + * so smp_release_cpus() does nothing for them + */ +#if defined(CONFIG_SMP) && !defined(CONFIG_PPC_FSL_BOOK3E) /* Release secondary cpus out of their spinloops at 0x60 now that * we can map physical -> logical CPU ids */ |