diff options
Diffstat (limited to 'hw/acpi')
| -rw-r--r-- | hw/acpi/cpu_hotplug_acpi_table.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/hw/acpi/cpu_hotplug_acpi_table.c b/hw/acpi/cpu_hotplug_acpi_table.c index 422e57b5b3..69c37fad71 100644 --- a/hw/acpi/cpu_hotplug_acpi_table.c +++ b/hw/acpi/cpu_hotplug_acpi_table.c @@ -19,6 +19,29 @@ void build_cpu_hotplug_aml(Aml *ctx) { Aml *method; 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); + Aml *cpu_on = aml_local(0); + Aml *madt = aml_local(1); + Aml *cpus_map = aml_name(CPU_ON_BITMAP); + + /* + * _MAT method - creates an madt apic buffer + * cpu_id = Arg0 = Processor ID = Local APIC ID + * cpu_on = Local0 = CPON flag for this cpu + * madt = Local1 = Buffer (in madt apic form) to return + */ + method = aml_method(CPU_MAT_METHOD, 1, AML_NOTSERIALIZED); + aml_append(method, + aml_store(aml_derefof(aml_index(cpus_map, cpu_id)), cpu_on)); + aml_append(method, + aml_store(aml_buffer(sizeof(madt_tmpl), madt_tmpl), madt)); + /* Update the processor id, lapic id, and enable/disable status */ + aml_append(method, aml_store(cpu_id, aml_index(madt, aml_int(2)))); + aml_append(method, aml_store(cpu_id, aml_index(madt, aml_int(3)))); + aml_append(method, aml_store(cpu_on, aml_index(madt, aml_int(4)))); + aml_append(method, aml_return(madt)); + aml_append(sb_scope, method); method = aml_method(CPU_EJECT_METHOD, 2, AML_NOTSERIALIZED); aml_append(method, aml_sleep(200)); |