diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/prom.c | 12 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_32.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/platforms/chrp/smp.c | 40 |
3 files changed, 44 insertions, 12 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index ab9b291dda54..6309a1a17c4a 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -1110,22 +1110,22 @@ static int __init early_init_dt_scan_cpus(unsigned long node, } #endif -#ifdef CONFIG_PPC64 + boot_cpuid = 0; + boot_cpuid_phys = 0; if (initial_boot_params && initial_boot_params->version >= 2) { /* version 2 of the kexec param format adds the phys cpuid * of booted proc. */ boot_cpuid_phys = initial_boot_params->boot_cpuid_phys; - boot_cpuid = 0; } else { - /* Check if it's the boot-cpu, set it's hw index in paca now */ + /* Check if it's the boot-cpu, set it's hw index now */ if (get_flat_dt_prop(node, "linux,boot-cpu", NULL) != NULL) { prop = get_flat_dt_prop(node, "reg", NULL); - set_hard_smp_processor_id(0, prop == NULL ? 0 : *prop); - boot_cpuid_phys = get_hard_smp_processor_id(0); + if (prop != NULL) + boot_cpuid_phys = *prop; } } -#endif + set_hard_smp_processor_id(0, boot_cpuid_phys); #ifdef CONFIG_ALTIVEC /* Check if we have a VMX and eventually update CPU features */ diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 150a919269ae..7c99e6b8c76c 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -59,6 +59,10 @@ struct ide_machdep_calls ppc_ide_md; int __irq_offset_value; EXPORT_SYMBOL(__irq_offset_value); +int boot_cpuid; +EXPORT_SYMBOL_GPL(boot_cpuid); +int boot_cpuid_phys; + unsigned long ISA_DMA_THRESHOLD; unsigned int DMA_MODE_READ; unsigned int DMA_MODE_WRITE; diff --git a/arch/powerpc/platforms/chrp/smp.c b/arch/powerpc/platforms/chrp/smp.c index bf68282670dd..31ee49c25014 100644 --- a/arch/powerpc/platforms/chrp/smp.c +++ b/arch/powerpc/platforms/chrp/smp.c @@ -32,15 +32,44 @@ #include <asm/time.h> #include <asm/open_pic.h> #include <asm/machdep.h> +#include <asm/smp.h> +#include <asm/mpic.h> extern unsigned long smp_chrp_cpu_nr; static int __init smp_chrp_probe(void) { - if (smp_chrp_cpu_nr > 1) - openpic_request_IPIs(); + struct device_node *cpus = NULL; + unsigned int *reg; + int reglen; + int ncpus = 0; + int cpuid; + unsigned int phys; + + /* Count CPUs in the device-tree */ + cpuid = 1; /* the boot cpu is logical cpu 0 */ + while ((cpus = of_find_node_by_type(cpus, "cpu")) != NULL) { + phys = ncpus; + reg = (unsigned int *) get_property(cpus, "reg", ®len); + if (reg && reglen >= sizeof(unsigned int)) + /* hmmm, not having a reg property would be bad */ + phys = *reg; + if (phys != boot_cpuid_phys) { + set_hard_smp_processor_id(cpuid, phys); + ++cpuid; + } + ++ncpus; + } + + printk(KERN_INFO "CHRP SMP probe found %d cpus\n", ncpus); + + /* Nothing more to do if less than 2 of them */ + if (ncpus <= 1) + return 1; + + mpic_request_ipis(); - return smp_chrp_cpu_nr; + return ncpus; } static void __devinit smp_chrp_kick_cpu(int nr) @@ -51,8 +80,7 @@ static void __devinit smp_chrp_kick_cpu(int nr) static void __devinit smp_chrp_setup_cpu(int cpu_nr) { - if (OpenPIC_Addr) - do_openpic_setup_cpu(); + mpic_setup_this_cpu(); } static DEFINE_SPINLOCK(timebase_lock); @@ -85,7 +113,7 @@ void __devinit smp_chrp_take_timebase(void) /* CHRP with openpic */ struct smp_ops_t chrp_smp_ops = { - .message_pass = smp_openpic_message_pass, + .message_pass = smp_mpic_message_pass, .probe = smp_chrp_probe, .kick_cpu = smp_chrp_kick_cpu, .setup_cpu = smp_chrp_setup_cpu, |