diff options
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/85xx/smp.c | 43 |
1 files changed, 35 insertions, 8 deletions
diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index 79a0df17078..cc0b0db8a6f 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/platforms/85xx/smp.c @@ -21,6 +21,7 @@ #include <asm/page.h> #include <asm/mpic.h> #include <asm/cacheflush.h> +#include <asm/dbell.h> #include <sysdev/fsl_soc.h> @@ -80,10 +81,8 @@ smp_85xx_kick_cpu(int nr) } static void __init -smp_85xx_setup_cpu(int cpu_nr) +smp_85xx_basic_setup(int cpu_nr) { - mpic_setup_this_cpu(); - /* Clear any pending timer interrupts */ mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS); @@ -91,15 +90,43 @@ smp_85xx_setup_cpu(int cpu_nr) mtspr(SPRN_TCR, TCR_DIE); } +static void __init +smp_85xx_setup_cpu(int cpu_nr) +{ + mpic_setup_this_cpu(); + + smp_85xx_basic_setup(cpu_nr); +} + struct smp_ops_t smp_85xx_ops = { - .message_pass = smp_mpic_message_pass, - .probe = smp_mpic_probe, .kick_cpu = smp_85xx_kick_cpu, - .setup_cpu = smp_85xx_setup_cpu, }; -void __init -mpc85xx_smp_init(void) +static int __init smp_dummy_probe(void) { + return NR_CPUS; +} + +void __init mpc85xx_smp_init(void) +{ + struct device_node *np; + + smp_85xx_ops.message_pass = NULL; + + np = of_find_node_by_type(NULL, "open-pic"); + if (np) { + smp_85xx_ops.probe = smp_mpic_probe; + smp_85xx_ops.setup_cpu = smp_85xx_setup_cpu; + smp_85xx_ops.message_pass = smp_mpic_message_pass; + } else { + smp_85xx_ops.probe = smp_dummy_probe; + smp_85xx_ops.setup_cpu = smp_85xx_basic_setup; + } + + if (cpu_has_feature(CPU_FTR_DBELL)) + smp_85xx_ops.message_pass = smp_dbell_message_pass; + + BUG_ON(!smp_85xx_ops.message_pass); + smp_ops = &smp_85xx_ops; } |