diff options
Diffstat (limited to 'arch/powerpc/kernel/setup-common.c')
| -rw-r--r-- | arch/powerpc/kernel/setup-common.c | 241 |
1 files changed, 142 insertions, 99 deletions
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 03dd6a24819..e5b022c55cc 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -12,7 +12,7 @@ #undef DEBUG -#include <linux/module.h> +#include <linux/export.h> #include <linux/string.h> #include <linux/sched.h> #include <linux/init.h> @@ -33,9 +33,10 @@ #include <linux/serial_8250.h> #include <linux/debugfs.h> #include <linux/percpu.h> -#include <linux/lmb.h> +#include <linux/memblock.h> #include <linux/of_platform.h> #include <asm/io.h> +#include <asm/paca.h> #include <asm/prom.h> #include <asm/processor.h> #include <asm/vdso_datapage.h> @@ -50,7 +51,6 @@ #include <asm/btext.h> #include <asm/nvram.h> #include <asm/setup.h> -#include <asm/system.h> #include <asm/rtas.h> #include <asm/iommu.h> #include <asm/serial.h> @@ -60,8 +60,7 @@ #include <asm/xmon.h> #include <asm/cputhreads.h> #include <mm/mmu_decl.h> - -#include "setup.h" +#include <asm/fadump.h> #ifdef DEBUG #include <asm/udbg.h> @@ -77,6 +76,9 @@ EXPORT_SYMBOL(ppc_md); struct machdep_calls *machine_id; EXPORT_SYMBOL(machine_id); +int boot_cpuid = -1; +EXPORT_SYMBOL_GPL(boot_cpuid); + unsigned long klimit = (unsigned long) _end; char cmd_line[COMMAND_LINE_SIZE]; @@ -93,6 +95,12 @@ struct screen_info screen_info = { .orig_video_points = 16 }; +/* Variables required to store legacy IO irq routing */ +int of_i8042_kbd_irq; +EXPORT_SYMBOL_GPL(of_i8042_kbd_irq); +int of_i8042_aux_irq; +EXPORT_SYMBOL_GPL(of_i8042_aux_irq); + #ifdef __DO_IRQ_CANON /* XXX should go elsewhere eventually */ int ppc_do_canonicalize_irqs; @@ -102,6 +110,14 @@ EXPORT_SYMBOL(ppc_do_canonicalize_irqs); /* also used by kexec */ void machine_shutdown(void) { +#ifdef CONFIG_FA_DUMP + /* + * if fadump is active, cleanup the fadump registration before we + * shutdown. + */ + fadump_cleanup(); +#endif + if (ppc_md.machine_shutdown) ppc_md.machine_shutdown(); } @@ -160,45 +176,45 @@ extern u32 cpu_temp_both(unsigned long cpu); DEFINE_PER_CPU(unsigned int, cpu_pvr); #endif -static int show_cpuinfo(struct seq_file *m, void *v) +static void show_cpuinfo_summary(struct seq_file *m) { - unsigned long cpu_id = (unsigned long)v - 1; - unsigned int pvr; - unsigned short maj; - unsigned short min; - - if (cpu_id == NR_CPUS) { - struct device_node *root; - const char *model = NULL; + struct device_node *root; + const char *model = NULL; #if defined(CONFIG_SMP) && defined(CONFIG_PPC32) - unsigned long bogosum = 0; - int i; - for_each_online_cpu(i) - bogosum += loops_per_jiffy; - seq_printf(m, "total bogomips\t: %lu.%02lu\n", - bogosum/(500000/HZ), bogosum/(5000/HZ) % 100); + unsigned long bogosum = 0; + int i; + for_each_online_cpu(i) + bogosum += loops_per_jiffy; + seq_printf(m, "total bogomips\t: %lu.%02lu\n", + bogosum/(500000/HZ), bogosum/(5000/HZ) % 100); #endif /* CONFIG_SMP && CONFIG_PPC32 */ - seq_printf(m, "timebase\t: %lu\n", ppc_tb_freq); - if (ppc_md.name) - seq_printf(m, "platform\t: %s\n", ppc_md.name); - root = of_find_node_by_path("/"); - if (root) - model = of_get_property(root, "model", NULL); - if (model) - seq_printf(m, "model\t\t: %s\n", model); - of_node_put(root); - - if (ppc_md.show_cpuinfo != NULL) - ppc_md.show_cpuinfo(m); + seq_printf(m, "timebase\t: %lu\n", ppc_tb_freq); + if (ppc_md.name) + seq_printf(m, "platform\t: %s\n", ppc_md.name); + root = of_find_node_by_path("/"); + if (root) + model = of_get_property(root, "model", NULL); + if (model) + seq_printf(m, "model\t\t: %s\n", model); + of_node_put(root); + + if (ppc_md.show_cpuinfo != NULL) + ppc_md.show_cpuinfo(m); #ifdef CONFIG_PPC32 - /* Display the amount of memory */ - seq_printf(m, "Memory\t\t: %d MB\n", - (unsigned int)(total_memory / (1024 * 1024))); + /* Display the amount of memory */ + seq_printf(m, "Memory\t\t: %d MB\n", + (unsigned int)(total_memory / (1024 * 1024))); #endif +} - return 0; - } +static int show_cpuinfo(struct seq_file *m, void *v) +{ + unsigned long cpu_id = (unsigned long)v - 1; + unsigned int pvr; + unsigned long proc_freq; + unsigned short maj; + unsigned short min; /* We only show online cpus: disable preempt (overzealous, I * knew) to prevent cpu going down. */ @@ -248,12 +264,19 @@ static int show_cpuinfo(struct seq_file *m, void *v) #endif /* CONFIG_TAU */ /* - * Assume here that all clock rates are the same in a - * smp system. -- Cort + * Platforms that have variable clock rates, should implement + * the method ppc_md.get_proc_freq() that reports the clock + * rate of a given cpu. The rest can use ppc_proc_freq to + * report the clock rate that is same across all cpus. */ - if (ppc_proc_freq) + if (ppc_md.get_proc_freq) + proc_freq = ppc_md.get_proc_freq(cpu_id); + else + proc_freq = ppc_proc_freq; + + if (proc_freq) seq_printf(m, "clock\t\t: %lu.%06luMHz\n", - ppc_proc_freq / 1000000, ppc_proc_freq % 1000000); + proc_freq / 1000000, proc_freq % 1000000); if (ppc_md.show_percpuinfo != NULL) ppc_md.show_percpuinfo(m, cpu_id); @@ -307,19 +330,28 @@ static int show_cpuinfo(struct seq_file *m, void *v) #endif preempt_enable(); + + /* If this is the last cpu, print the summary */ + if (cpumask_next(cpu_id, cpu_online_mask) >= nr_cpu_ids) + show_cpuinfo_summary(m); + return 0; } static void *c_start(struct seq_file *m, loff_t *pos) { - unsigned long i = *pos; - - return i <= NR_CPUS ? (void *)(i + 1) : NULL; + if (*pos == 0) /* just in case, cpu 0 is not the first */ + *pos = cpumask_first(cpu_online_mask); + else + *pos = cpumask_next(*pos - 1, cpu_online_mask); + if ((*pos) < nr_cpu_ids) + return (void *)(unsigned long)(*pos + 1); + return NULL; } static void *c_next(struct seq_file *m, void *v, loff_t *pos) { - ++*pos; + (*pos)++; return c_start(m, pos); } @@ -358,15 +390,20 @@ void __init check_for_initrd(void) #ifdef CONFIG_SMP -int threads_per_core, threads_shift; +int threads_per_core, threads_per_subcore, threads_shift; cpumask_t threads_core_mask; +EXPORT_SYMBOL_GPL(threads_per_core); +EXPORT_SYMBOL_GPL(threads_per_subcore); +EXPORT_SYMBOL_GPL(threads_shift); +EXPORT_SYMBOL_GPL(threads_core_mask); static void __init cpu_init_thread_core_maps(int tpc) { int i; threads_per_core = tpc; - threads_core_mask = CPU_MASK_NONE; + threads_per_subcore = tpc; + cpumask_clear(&threads_core_mask); /* This implementation only supports power of 2 number of threads * for simplicity and performance @@ -375,7 +412,7 @@ static void __init cpu_init_thread_core_maps(int tpc) BUG_ON(tpc != (1 << threads_shift)); for (i = 0; i < tpc; i++) - cpu_set(i, threads_core_mask); + cpumask_set_cpu(i, &threads_core_mask); printk(KERN_INFO "CPU maps initialized for %d thread%s per core\n", tpc, tpc > 1 ? "s" : ""); @@ -385,14 +422,14 @@ static void __init cpu_init_thread_core_maps(int tpc) /** * setup_cpu_maps - initialize the following cpu maps: - * cpu_possible_map - * cpu_present_map + * cpu_possible_mask + * cpu_present_mask * * Having the possible map set up early allows us to restrict allocations - * of things like irqstacks to num_possible_cpus() rather than NR_CPUS. + * of things like irqstacks to nr_cpu_ids rather than NR_CPUS. * * We do not initialize the online map here; cpus set their own bits in - * cpu_online_map as they come up. + * cpu_online_mask as they come up. * * This function is valid only for Open Firmware systems. finish_device_tree * must be called before using this. @@ -409,8 +446,9 @@ void __init smp_setup_cpu_maps(void) DBG("smp_setup_cpu_maps()\n"); - while ((dn = of_find_node_by_type(dn, "cpu")) && cpu < NR_CPUS) { - const int *intserv; + while ((dn = of_find_node_by_type(dn, "cpu")) && cpu < nr_cpu_ids) { + const __be32 *intserv; + __be32 cpu_be; int j, len; DBG(" * %s...\n", dn->full_name); @@ -424,15 +462,25 @@ void __init smp_setup_cpu_maps(void) } else { DBG(" no ibm,ppc-interrupt-server#s -> 1 thread\n"); intserv = of_get_property(dn, "reg", NULL); - if (!intserv) - intserv = &cpu; /* assume logical == phys */ + if (!intserv) { + cpu_be = cpu_to_be32(cpu); + intserv = &cpu_be; /* assume logical == phys */ + } } - for (j = 0; j < nthreads && cpu < NR_CPUS; j++) { + for (j = 0; j < nthreads && cpu < nr_cpu_ids; j++) { + bool avail; + DBG(" thread %d -> cpu %d (hard id %d)\n", - j, cpu, intserv[j]); - set_cpu_present(cpu, true); - set_hard_smp_processor_id(cpu, intserv[j]); + j, cpu, be32_to_cpu(intserv[j])); + + avail = of_device_is_available(dn); + if (!avail) + avail = !of_property_match_string(dn, + "enable-method", "spin-table"); + + set_cpu_present(cpu, avail); + set_hard_smp_processor_id(cpu, be32_to_cpu(intserv[j])); set_cpu_possible(cpu, true); cpu++; } @@ -452,7 +500,7 @@ void __init smp_setup_cpu_maps(void) if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR) && (dn = of_find_node_by_path("/rtas"))) { int num_addr_cell, num_size_cell, maxcpus; - const unsigned int *ireg; + const __be32 *ireg; num_addr_cell = of_n_addr_cells(dn); num_size_cell = of_n_size_cells(dn); @@ -462,18 +510,18 @@ void __init smp_setup_cpu_maps(void) if (!ireg) goto out; - maxcpus = ireg[num_addr_cell + num_size_cell]; + maxcpus = be32_to_cpup(ireg + num_addr_cell + num_size_cell); /* Double maxcpus for processors which have SMT capability */ if (cpu_has_feature(CPU_FTR_SMT)) maxcpus *= nthreads; - if (maxcpus > NR_CPUS) { + if (maxcpus > nr_cpu_ids) { printk(KERN_WARNING "Partition configured for %d cpus, " "operating system maximum is %d.\n", - maxcpus, NR_CPUS); - maxcpus = NR_CPUS; + maxcpus, nr_cpu_ids); + maxcpus = nr_cpu_ids; } else printk(KERN_INFO "Partition configured for %d cpus.\n", maxcpus); @@ -493,6 +541,11 @@ void __init smp_setup_cpu_maps(void) * here will have to be reworked */ cpu_init_thread_core_maps(nthreads); + + /* Now that possible cpus are set, set nr_cpu_ids for later use */ + setup_nr_cpu_ids(); + + free_unused_pacas(); } #endif /* CONFIG_SMP */ @@ -564,6 +617,15 @@ int check_legacy_ioport(unsigned long base_port) np = of_find_compatible_node(NULL, NULL, "pnpPNP,f03"); if (np) { parent = of_get_parent(np); + + of_i8042_kbd_irq = irq_of_parse_and_map(parent, 0); + if (!of_i8042_kbd_irq) + of_i8042_kbd_irq = 1; + + of_i8042_aux_irq = irq_of_parse_and_map(parent, 1); + if (!of_i8042_aux_irq) + of_i8042_aux_irq = 12; + of_node_put(np); np = parent; break; @@ -573,16 +635,14 @@ int check_legacy_ioport(unsigned long base_port) * name instead */ if (!np) np = of_find_node_by_name(NULL, "8042"); + if (np) { + of_i8042_kbd_irq = 1; + of_i8042_aux_irq = 12; + } break; case FDC_BASE: /* FDC1 */ np = of_find_node_by_type(NULL, "fdc"); break; -#ifdef CONFIG_PPC_PREP - case _PIDXR: - case _PNPWRP: - case PNPBIOS_BASE: - /* implement me */ -#endif default: /* ipmi is supposed to fail here */ break; @@ -603,6 +663,11 @@ 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; } @@ -671,36 +736,14 @@ static int powerpc_debugfs_init(void) arch_initcall(powerpc_debugfs_init); #endif -static int ppc_dflt_bus_notify(struct notifier_block *nb, - unsigned long action, void *data) +void ppc_printk_progress(char *s, unsigned short hex) { - struct device *dev = data; - - /* We are only intereted in device addition */ - if (action != BUS_NOTIFY_ADD_DEVICE) - return 0; - - set_dma_ops(dev, &dma_direct_ops); - - return NOTIFY_DONE; + pr_info("%s\n", s); } -static struct notifier_block ppc_dflt_plat_bus_notifier = { - .notifier_call = ppc_dflt_bus_notify, - .priority = INT_MAX, -}; - -static struct notifier_block ppc_dflt_of_bus_notifier = { - .notifier_call = ppc_dflt_bus_notify, - .priority = INT_MAX, -}; - -static int __init setup_bus_notifier(void) +void arch_setup_pdev_archdata(struct platform_device *pdev) { - bus_register_notifier(&platform_bus_type, &ppc_dflt_plat_bus_notifier); - bus_register_notifier(&of_platform_bus_type, &ppc_dflt_of_bus_notifier); - - return 0; + pdev->archdata.dma_mask = DMA_BIT_MASK(32); + pdev->dev.dma_mask = &pdev->archdata.dma_mask; + set_dma_ops(&pdev->dev, &dma_direct_ops); } - -arch_initcall(setup_bus_notifier); |