diff options
Diffstat (limited to 'arch/ppc64/kernel/prom.c')
| -rw-r--r-- | arch/ppc64/kernel/prom.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c index 01739d5c47c7..b08aac68baff 100644 --- a/arch/ppc64/kernel/prom.c +++ b/arch/ppc64/kernel/prom.c @@ -885,6 +885,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node, const char *full_path, void *data) { char *type = get_flat_dt_prop(node, "device_type", NULL); + u32 *prop; /* We are scanning "cpu" nodes only */ if (type == NULL || strcmp(type, "cpu") != 0) @@ -916,6 +917,20 @@ static int __init early_init_dt_scan_cpus(unsigned long node, } } + /* Check if we have a VMX and eventually update CPU features */ + prop = (u32 *)get_flat_dt_prop(node, "ibm,vmx", NULL); + if (prop && (*prop) > 0) { + cur_cpu_spec->cpu_features |= CPU_FTR_ALTIVEC; + cur_cpu_spec->cpu_user_features |= PPC_FEATURE_HAS_ALTIVEC; + } + + /* Same goes for Apple's "altivec" property */ + prop = (u32 *)get_flat_dt_prop(node, "altivec", NULL); + if (prop) { + cur_cpu_spec->cpu_features |= CPU_FTR_ALTIVEC; + cur_cpu_spec->cpu_user_features |= PPC_FEATURE_HAS_ALTIVEC; + } + return 0; } @@ -1104,7 +1119,9 @@ void __init early_init_devtree(void *params) DBG("Scanning CPUs ...\n"); - /* Retreive hash table size from flattened tree */ + /* Retreive hash table size from flattened tree plus other + * CPU related informations (altivec support, boot CPU ID, ...) + */ scan_flat_dt(early_init_dt_scan_cpus, NULL); /* If hash size wasn't obtained above, we calculate it now based on |