[Qemu-devel] [RFC 27/42] acpi: add CPU devices AML to DSDT

[Igor Mammedov <imammedo@redhat.com>]

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/acpi/cpu.c         | 38 ++++++++++++++++++++++++++++++++++++++
 hw/i386/acpi-build.c  |  2 ++
 include/hw/acpi/cpu.h |  3 +++
 3 files changed, 43 insertions(+)

diff --git a/hw/acpi/cpu.c b/hw/acpi/cpu.c
index 2b4feb0..6dab4d6 100644
--- a/hw/acpi/cpu.c
+++ b/hw/acpi/cpu.c
@@ -216,3 +216,41 @@ const VMStateDescription vmstate_cpu_hotplug = {
         VMSTATE_END_OF_LIST()
     }
 };
+
+#define CPU_NAME_FMT      "C%.03X"
+
+void build_cpus_aml(Aml *table, MachineState *machine, bool acpi1_compat)
+{
+    Aml *cpus_dev;
+    Aml *sb_scope = aml_scope("_SB");
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
+    CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine);
+    cpus_dev = aml_device("\\_SB.CPUS");
+    {
+        int i;
+
+        aml_append(cpus_dev, aml_name_decl("_HID", aml_string("ACPI0010")));
+        aml_append(cpus_dev, aml_name_decl("_CID", aml_eisaid("PNP0A05")));
+
+        /* build Processor object for each processor */
+        for (i = 0; i < arch_ids->len; i++) {
+            Aml *dev;
+            Aml *uid = aml_int(i);
+            int arch_id = arch_ids->cpus[i].arch_id;
+
+            if (acpi1_compat && arch_id < 255) {
+                dev = aml_processor(i, 0, 0, CPU_NAME_FMT, i);
+            } else {
+                dev = aml_device(CPU_NAME_FMT, arch_id);
+                aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
+                aml_append(dev, aml_name_decl("_UID", uid));
+            }
+
+            aml_append(cpus_dev, dev);
+        }
+    }
+    aml_append(sb_scope, cpus_dev);
+    aml_append(table, sb_scope);
+
+    g_free(arch_ids);
+}
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index f8c9a7c..466eebd 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1948,6 +1948,8 @@ build_dsdt(GArray *table_data, GArray *linker,
 
     if (pm->legacy_cpu_hp) {
         build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base);
+    } else {
+        build_cpus_aml(dsdt, machine, true);
     }
     build_memory_hotplug_aml(dsdt, nr_mem, pm->mem_hp_io_base,
                              pm->mem_hp_io_len);
diff --git a/include/hw/acpi/cpu.h b/include/hw/acpi/cpu.h
index c746292..da087bf 100644
--- a/include/hw/acpi/cpu.h
+++ b/include/hw/acpi/cpu.h
@@ -14,6 +14,7 @@
 
 #include "hw/qdev-core.h"
 #include "hw/acpi/acpi.h"
+#include "hw/acpi/aml-build.h"
 #include "hw/hotplug.h"
 
 typedef struct AcpiCpuStatus {
@@ -45,6 +46,8 @@ void acpi_cpu_unplug_cb(CPUHotplugState *cpu_st,
 void cpu_hotplug_hw_init(MemoryRegion *as, Object *owner,
                          CPUHotplugState *state, hwaddr base_addr);
 
+void build_cpus_aml(Aml *table, MachineState *machine, bool apci1_compat);
+
 extern const VMStateDescription vmstate_cpu_hotplug;
 #define VMSTATE_CPU_HOTPLUG(cpuhp, state) \
     VMSTATE_STRUCT(cpuhp, state, 1, \
-- 
1.8.3.1