diff options
Diffstat (limited to 'arch/powerpc/kernel/setup-common.c')
| -rw-r--r-- | arch/powerpc/kernel/setup-common.c | 66 |
1 files changed, 43 insertions, 23 deletions
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 2e3bc16d02b2..d73ec518ef80 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -242,14 +242,6 @@ static int show_cpuinfo(struct seq_file *m, void *v) unsigned short maj; unsigned short min; - /* We only show online cpus: disable preempt (overzealous, I - * knew) to prevent cpu going down. */ - preempt_disable(); - if (!cpu_online(cpu_id)) { - preempt_enable(); - return 0; - } - #ifdef CONFIG_SMP pvr = per_cpu(cpu_pvr, cpu_id); #else @@ -354,12 +346,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) loops_per_jiffy / (500000/HZ), (loops_per_jiffy / (5000/HZ)) % 100); #endif - -#ifdef CONFIG_SMP seq_printf(m, "\n"); -#endif - - preempt_enable(); /* If this is the last cpu, print the summary */ if (cpumask_next(cpu_id, cpu_online_mask) >= nr_cpu_ids) @@ -390,10 +377,10 @@ static void c_stop(struct seq_file *m, void *v) } const struct seq_operations cpuinfo_op = { - .start =c_start, - .next = c_next, - .stop = c_stop, - .show = show_cpuinfo, + .start = c_start, + .next = c_next, + .stop = c_stop, + .show = show_cpuinfo, }; void __init check_for_initrd(void) @@ -470,13 +457,13 @@ static void __init cpu_init_thread_core_maps(int tpc) */ void __init smp_setup_cpu_maps(void) { - struct device_node *dn = NULL; + struct device_node *dn; int cpu = 0; int nthreads = 1; DBG("smp_setup_cpu_maps()\n"); - while ((dn = of_find_node_by_type(dn, "cpu")) && cpu < nr_cpu_ids) { + for_each_node_by_type(dn, "cpu") { const __be32 *intserv; __be32 cpu_be; int j, len; @@ -516,6 +503,11 @@ void __init smp_setup_cpu_maps(void) set_cpu_possible(cpu, true); cpu++; } + + if (cpu >= nr_cpu_ids) { + of_node_put(dn); + break; + } } /* If no SMT supported, nthreads is forced to 1 */ @@ -704,6 +696,30 @@ int check_legacy_ioport(unsigned long base_port) } EXPORT_SYMBOL(check_legacy_ioport); +static int ppc_panic_event(struct notifier_block *this, + unsigned long event, void *ptr) +{ + /* + * If firmware-assisted dump has been registered then trigger + * firmware-assisted dump and let firmware handle everything else. + */ + crash_fadump(NULL, ptr); + ppc_md.panic(ptr); /* May not return */ + return NOTIFY_DONE; +} + +static struct notifier_block ppc_panic_block = { + .notifier_call = ppc_panic_event, + .priority = INT_MIN /* may not return; must be done last */ +}; + +void __init setup_panic(void) +{ + if (!ppc_md.panic) + return; + atomic_notifier_chain_register(&panic_notifier_list, &ppc_panic_block); +} + #ifdef CONFIG_CHECK_CACHE_COHERENCY /* * For platforms that have configurable cache-coherency. This function @@ -767,13 +783,13 @@ void arch_setup_pdev_archdata(struct platform_device *pdev) { pdev->archdata.dma_mask = DMA_BIT_MASK(32); pdev->dev.dma_mask = &pdev->archdata.dma_mask; - set_dma_ops(&pdev->dev, &dma_direct_ops); + set_dma_ops(&pdev->dev, &dma_nommu_ops); } static __init void print_system_info(void) { pr_info("-----------------------------------------------------\n"); -#ifdef CONFIG_PPC_STD_MMU_64 +#ifdef CONFIG_PPC_BOOK3S_64 pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size); #endif #ifdef CONFIG_PPC_STD_MMU_32 @@ -800,7 +816,7 @@ static __init void print_system_info(void) pr_info("firmware_features = 0x%016lx\n", powerpc_firmware_features); #endif -#ifdef CONFIG_PPC_STD_MMU_64 +#ifdef CONFIG_PPC_BOOK3S_64 if (htab_address) pr_info("htab_address = 0x%p\n", htab_address); if (htab_hash_mask) @@ -848,6 +864,9 @@ void __init setup_arch(char **cmdline_p) /* Probe the machine type, establish ppc_md. */ probe_machine(); + /* Setup panic notifier if requested by the platform. */ + setup_panic(); + /* * Configure ppc_md.power_save (ppc32 only, 64-bit machines do * it from their respective probe() function. @@ -898,7 +917,8 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_PPC_MM_SLICES #ifdef CONFIG_PPC64 - init_mm.context.addr_limit = DEFAULT_MAP_WINDOW_USER64; + if (!radix_enabled()) + init_mm.context.slb_addr_limit = DEFAULT_MAP_WINDOW_USER64; #else #error "context.addr_limit not initialized." #endif |