diff options
| -rw-r--r-- | hw/i386/acpi-build.c | 27 | ||||
| -rw-r--r-- | hw/i386/acpi-dsdt-cpu-hotplug.dsl | 17 | ||||
| -rw-r--r-- | include/hw/acpi/pc-hotplug.h | 1 |
3 files changed, 29 insertions, 16 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index c6910dac9a..4f1c251d8d 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -101,6 +101,8 @@ typedef struct AcpiPmInfo { uint32_t gpe0_blk; uint32_t gpe0_blk_len; uint32_t io_base; + uint16_t cpu_hp_io_base; + uint16_t cpu_hp_io_len; } AcpiPmInfo; typedef struct AcpiMiscInfo { @@ -176,12 +178,15 @@ static void acpi_get_pm_info(AcpiPmInfo *pm) if (piix) { obj = piix; + pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE; } if (lpc) { obj = lpc; + pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE; } assert(obj); + pm->cpu_hp_io_len = ACPI_GPE_PROC_LEN; /* Fill in optional s3/s4 related properties */ o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL); if (o) { @@ -995,6 +1000,28 @@ build_ssdt(GArray *table_data, GArray *linker, sb_scope = aml_scope("_SB"); { + /* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */ + dev = aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE)); + aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06"))); + aml_append(dev, + aml_name_decl("_UID", aml_string("CPU Hotplug resources")) + ); + /* device present, functioning, decoding, not shown in UI */ + aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); + crs = aml_resource_template(); + aml_append(crs, + aml_io(aml_decode16, pm->cpu_hp_io_base, pm->cpu_hp_io_base, 1, + pm->cpu_hp_io_len) + ); + aml_append(dev, aml_name_decl("_CRS", crs)); + aml_append(sb_scope, dev); + /* declare CPU hotplug MMIO region and PRS field to access it */ + aml_append(sb_scope, aml_operation_region( + "PRST", aml_system_io, pm->cpu_hp_io_base, pm->cpu_hp_io_len)); + field = aml_field("PRST", aml_byte_acc); + aml_append(field, aml_named_field("PRS", 256)); + aml_append(sb_scope, field); + /* build Processor object for each processor */ for (i = 0; i < acpi_cpus; i++) { dev = aml_processor(i, 0, 0, "CP%.02X", i); diff --git a/hw/i386/acpi-dsdt-cpu-hotplug.dsl b/hw/i386/acpi-dsdt-cpu-hotplug.dsl index 268d870990..1aff74627f 100644 --- a/hw/i386/acpi-dsdt-cpu-hotplug.dsl +++ b/hw/i386/acpi-dsdt-cpu-hotplug.dsl @@ -16,12 +16,12 @@ /**************************************************************** * CPU hotplug ****************************************************************/ -#define CPU_HOTPLUG_RESOURCE_DEVICE PRES Scope(\_SB) { /* Objects filled in by run-time generated SSDT */ External(NTFY, MethodObj) External(CPON, PkgObj) + External(PRS, FieldUnitObj) /* Methods called by run-time generated SSDT Processor objects */ Method(CPMA, 1, NotSerialized) { @@ -54,10 +54,6 @@ Scope(\_SB) { } #define CPU_STATUS_LEN ACPI_GPE_PROC_LEN - OperationRegion(PRST, SystemIO, CPU_STATUS_BASE, CPU_STATUS_LEN) - Field(PRST, ByteAcc, NoLock, Preserve) { - PRS, 256 - } Method(PRSC, 0) { // Local5 = active cpu bitmap Store(PRS, Local5) @@ -91,15 +87,4 @@ Scope(\_SB) { Increment(Local0) } } - - Device(CPU_HOTPLUG_RESOURCE_DEVICE) { - Name(_HID, EisaId("PNP0A06")) - Name(_UID, "CPU hotplug resources") - - Name(_CRS, ResourceTemplate() { - IO(Decode16, CPU_STATUS_BASE, CPU_STATUS_BASE, 0, CPU_STATUS_LEN) - }) - - Name(_STA, 0xB) /* present, functioning, decoding, not shown in UI */ - } } diff --git a/include/hw/acpi/pc-hotplug.h b/include/hw/acpi/pc-hotplug.h index b9db29576c..efa6ed7b7b 100644 --- a/include/hw/acpi/pc-hotplug.h +++ b/include/hw/acpi/pc-hotplug.h @@ -28,6 +28,7 @@ #define ICH9_CPU_HOTPLUG_IO_BASE 0x0CD8 #define PIIX4_CPU_HOTPLUG_IO_BASE 0xaf00 +#define CPU_HOTPLUG_RESOURCE_DEVICE PRES #define ACPI_MEMORY_HOTPLUG_IO_LEN 24 #define ACPI_MEMORY_HOTPLUG_BASE 0x0a00 |