diff options
Diffstat (limited to 'hw/acpi')
| -rw-r--r-- | hw/acpi/cpu_hotplug_acpi_table.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/hw/acpi/cpu_hotplug_acpi_table.c b/hw/acpi/cpu_hotplug_acpi_table.c index 69c37fad71..90c4043f4d 100644 --- a/hw/acpi/cpu_hotplug_acpi_table.c +++ b/hw/acpi/cpu_hotplug_acpi_table.c @@ -18,6 +18,8 @@ void build_cpu_hotplug_aml(Aml *ctx) { Aml *method; + Aml *if_ctx; + Aml *else_ctx; Aml *sb_scope = aml_scope("_SB"); uint8_t madt_tmpl[8] = {0x00, 0x08, 0x00, 0x00, 0x00, 0, 0, 0}; Aml *cpu_id = aml_arg(0); @@ -43,6 +45,26 @@ void build_cpu_hotplug_aml(Aml *ctx) aml_append(method, aml_return(madt)); aml_append(sb_scope, method); + /* + * _STA method - return ON status of cpu + * cpu_id = Arg0 = Processor ID = Local APIC ID + * cpu_on = Local0 = CPON flag for this cpu + */ + method = aml_method(CPU_STATUS_METHOD, 1, AML_NOTSERIALIZED); + aml_append(method, + aml_store(aml_derefof(aml_index(cpus_map, cpu_id)), cpu_on)); + if_ctx = aml_if(cpu_on); + { + aml_append(if_ctx, aml_return(aml_int(0xF))); + } + aml_append(method, if_ctx); + else_ctx = aml_else(); + { + aml_append(else_ctx, aml_return(aml_int(0x0))); + } + aml_append(method, else_ctx); + aml_append(sb_scope, method); + method = aml_method(CPU_EJECT_METHOD, 2, AML_NOTSERIALIZED); aml_append(method, aml_sleep(200)); aml_append(sb_scope, method); |