Igor Mammedov | 81cea5e | 2014-01-09 17:36:31 +0100 | [diff] [blame] | 1 | /* |
| 2 | * QEMU ACPI hotplug utilities |
| 3 | * |
| 4 | * Copyright (C) 2013 Red Hat Inc |
| 5 | * |
| 6 | * Authors: |
| 7 | * Igor Mammedov <imammedo@redhat.com> |
| 8 | * |
| 9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 10 | * See the COPYING file in the top-level directory. |
| 11 | */ |
Peter Maydell | b6a0aa0 | 2016-01-26 18:17:03 +0000 | [diff] [blame] | 12 | #include "qemu/osdep.h" |
Igor Mammedov | 81cea5e | 2014-01-09 17:36:31 +0100 | [diff] [blame] | 13 | #include "hw/hw.h" |
| 14 | #include "hw/acpi/cpu_hotplug.h" |
Markus Armbruster | da34e65 | 2016-03-14 09:01:28 +0100 | [diff] [blame] | 15 | #include "qapi/error.h" |
Paolo Bonzini | 508127e | 2016-01-07 16:55:28 +0300 | [diff] [blame] | 16 | #include "qom/cpu.h" |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 17 | #include "hw/i386/pc.h" |
Igor Mammedov | 6a91cf0 | 2016-10-19 14:05:34 +0200 | [diff] [blame] | 18 | #include "qemu/error-report.h" |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 19 | |
| 20 | #define CPU_EJECT_METHOD "CPEJ" |
| 21 | #define CPU_MAT_METHOD "CPMA" |
| 22 | #define CPU_ON_BITMAP "CPON" |
| 23 | #define CPU_STATUS_METHOD "CPST" |
| 24 | #define CPU_STATUS_MAP "PRS" |
| 25 | #define CPU_SCAN_METHOD "PRSC" |
Igor Mammedov | 81cea5e | 2014-01-09 17:36:31 +0100 | [diff] [blame] | 26 | |
| 27 | static uint64_t cpu_status_read(void *opaque, hwaddr addr, unsigned int size) |
| 28 | { |
| 29 | AcpiCpuHotplug *cpus = opaque; |
| 30 | uint64_t val = cpus->sts[addr]; |
| 31 | |
| 32 | return val; |
| 33 | } |
| 34 | |
| 35 | static void cpu_status_write(void *opaque, hwaddr addr, uint64_t data, |
| 36 | unsigned int size) |
| 37 | { |
Igor Mammedov | 679dd1a | 2016-06-15 11:25:23 +0200 | [diff] [blame] | 38 | /* firmware never used to write in CPU present bitmap so use |
| 39 | this fact as means to switch QEMU into modern CPU hotplug |
| 40 | mode by writing 0 at the beginning of legacy CPU bitmap |
| 41 | */ |
| 42 | if (addr == 0 && data == 0) { |
| 43 | AcpiCpuHotplug *cpus = opaque; |
| 44 | object_property_set_bool(cpus->device, false, "cpu-hotplug-legacy", |
| 45 | &error_abort); |
| 46 | } |
Igor Mammedov | 81cea5e | 2014-01-09 17:36:31 +0100 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | static const MemoryRegionOps AcpiCpuHotplug_ops = { |
| 50 | .read = cpu_status_read, |
| 51 | .write = cpu_status_write, |
| 52 | .endianness = DEVICE_LITTLE_ENDIAN, |
| 53 | .valid = { |
| 54 | .min_access_size = 1, |
| 55 | .max_access_size = 1, |
| 56 | }, |
| 57 | }; |
| 58 | |
Gu Zheng | cc43364 | 2014-10-22 11:24:32 +0800 | [diff] [blame] | 59 | static void acpi_set_cpu_present_bit(AcpiCpuHotplug *g, CPUState *cpu, |
| 60 | Error **errp) |
Gu Zheng | 1be6b51 | 2014-10-22 11:24:25 +0800 | [diff] [blame] | 61 | { |
Gu Zheng | 1be6b51 | 2014-10-22 11:24:25 +0800 | [diff] [blame] | 62 | CPUClass *k = CPU_GET_CLASS(cpu); |
| 63 | int64_t cpu_id; |
| 64 | |
| 65 | cpu_id = k->get_arch_id(cpu); |
| 66 | if ((cpu_id / 8) >= ACPI_GPE_PROC_LEN) { |
Igor Mammedov | f9dc175 | 2016-10-19 14:05:33 +0200 | [diff] [blame] | 67 | object_property_set_bool(g->device, false, "cpu-hotplug-legacy", |
| 68 | &error_abort); |
Gu Zheng | 1be6b51 | 2014-10-22 11:24:25 +0800 | [diff] [blame] | 69 | return; |
| 70 | } |
| 71 | |
Gu Zheng | 08bba95 | 2014-10-22 11:24:27 +0800 | [diff] [blame] | 72 | g->sts[cpu_id / 8] |= (1 << (cpu_id % 8)); |
Gu Zheng | cc43364 | 2014-10-22 11:24:32 +0800 | [diff] [blame] | 73 | } |
Gu Zheng | 1be6b51 | 2014-10-22 11:24:25 +0800 | [diff] [blame] | 74 | |
Igor Mammedov | 0058c08 | 2016-05-31 12:01:17 +0200 | [diff] [blame] | 75 | void legacy_acpi_cpu_plug_cb(HotplugHandler *hotplug_dev, |
Igor Mammedov | 96e3e12 | 2016-05-17 16:43:00 +0200 | [diff] [blame] | 76 | AcpiCpuHotplug *g, DeviceState *dev, Error **errp) |
Gu Zheng | cc43364 | 2014-10-22 11:24:32 +0800 | [diff] [blame] | 77 | { |
| 78 | acpi_set_cpu_present_bit(g, CPU(dev), errp); |
| 79 | if (*errp != NULL) { |
| 80 | return; |
| 81 | } |
Igor Mammedov | 0058c08 | 2016-05-31 12:01:17 +0200 | [diff] [blame] | 82 | acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS); |
Gu Zheng | 1be6b51 | 2014-10-22 11:24:25 +0800 | [diff] [blame] | 83 | } |
| 84 | |
Igor Mammedov | 96e3e12 | 2016-05-17 16:43:00 +0200 | [diff] [blame] | 85 | void legacy_acpi_cpu_hotplug_init(MemoryRegion *parent, Object *owner, |
| 86 | AcpiCpuHotplug *gpe_cpu, uint16_t base) |
Igor Mammedov | 81cea5e | 2014-01-09 17:36:31 +0100 | [diff] [blame] | 87 | { |
| 88 | CPUState *cpu; |
| 89 | |
Igor Mammedov | 81cea5e | 2014-01-09 17:36:31 +0100 | [diff] [blame] | 90 | memory_region_init_io(&gpe_cpu->io, owner, &AcpiCpuHotplug_ops, |
| 91 | gpe_cpu, "acpi-cpu-hotplug", ACPI_GPE_PROC_LEN); |
| 92 | memory_region_add_subregion(parent, base, &gpe_cpu->io); |
Igor Mammedov | 679dd1a | 2016-06-15 11:25:23 +0200 | [diff] [blame] | 93 | gpe_cpu->device = owner; |
Igor Mammedov | f9dc175 | 2016-10-19 14:05:33 +0200 | [diff] [blame] | 94 | |
| 95 | CPU_FOREACH(cpu) { |
| 96 | acpi_set_cpu_present_bit(gpe_cpu, cpu, &error_abort); |
| 97 | } |
Igor Mammedov | 679dd1a | 2016-06-15 11:25:23 +0200 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | void acpi_switch_to_modern_cphp(AcpiCpuHotplug *gpe_cpu, |
| 101 | CPUHotplugState *cpuhp_state, |
| 102 | uint16_t io_port) |
| 103 | { |
| 104 | MemoryRegion *parent = pci_address_space_io(PCI_DEVICE(gpe_cpu->device)); |
| 105 | |
| 106 | memory_region_del_subregion(parent, &gpe_cpu->io); |
| 107 | cpu_hotplug_hw_init(parent, gpe_cpu->device, cpuhp_state, io_port); |
Igor Mammedov | 81cea5e | 2014-01-09 17:36:31 +0100 | [diff] [blame] | 108 | } |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 109 | |
| 110 | void build_legacy_cpu_hotplug_aml(Aml *ctx, MachineState *machine, |
Igor Mammedov | ebd8ea8 | 2016-05-17 16:43:02 +0200 | [diff] [blame] | 111 | uint16_t io_base) |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 112 | { |
| 113 | Aml *dev; |
| 114 | Aml *crs; |
| 115 | Aml *pkg; |
| 116 | Aml *field; |
| 117 | Aml *method; |
| 118 | Aml *if_ctx; |
| 119 | Aml *else_ctx; |
| 120 | int i, apic_idx; |
| 121 | Aml *sb_scope = aml_scope("_SB"); |
| 122 | uint8_t madt_tmpl[8] = {0x00, 0x08, 0x00, 0x00, 0x00, 0, 0, 0}; |
Igor Mammedov | 76bdd24 | 2016-05-17 16:43:03 +0200 | [diff] [blame] | 123 | Aml *cpu_id = aml_arg(1); |
| 124 | Aml *apic_id = aml_arg(0); |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 125 | Aml *cpu_on = aml_local(0); |
| 126 | Aml *madt = aml_local(1); |
| 127 | Aml *cpus_map = aml_name(CPU_ON_BITMAP); |
| 128 | Aml *zero = aml_int(0); |
| 129 | Aml *one = aml_int(1); |
| 130 | MachineClass *mc = MACHINE_GET_CLASS(machine); |
Igor Mammedov | 80e5db3 | 2017-01-18 18:13:20 +0100 | [diff] [blame] | 131 | const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine); |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 132 | PCMachineState *pcms = PC_MACHINE(machine); |
| 133 | |
| 134 | /* |
| 135 | * _MAT method - creates an madt apic buffer |
Igor Mammedov | 76bdd24 | 2016-05-17 16:43:03 +0200 | [diff] [blame] | 136 | * apic_id = Arg0 = Local APIC ID |
| 137 | * cpu_id = Arg1 = Processor ID |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 138 | * cpu_on = Local0 = CPON flag for this cpu |
| 139 | * madt = Local1 = Buffer (in madt apic form) to return |
| 140 | */ |
Igor Mammedov | 76bdd24 | 2016-05-17 16:43:03 +0200 | [diff] [blame] | 141 | method = aml_method(CPU_MAT_METHOD, 2, AML_NOTSERIALIZED); |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 142 | aml_append(method, |
Igor Mammedov | 76bdd24 | 2016-05-17 16:43:03 +0200 | [diff] [blame] | 143 | aml_store(aml_derefof(aml_index(cpus_map, apic_id)), cpu_on)); |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 144 | aml_append(method, |
| 145 | aml_store(aml_buffer(sizeof(madt_tmpl), madt_tmpl), madt)); |
| 146 | /* Update the processor id, lapic id, and enable/disable status */ |
| 147 | aml_append(method, aml_store(cpu_id, aml_index(madt, aml_int(2)))); |
Igor Mammedov | 76bdd24 | 2016-05-17 16:43:03 +0200 | [diff] [blame] | 148 | aml_append(method, aml_store(apic_id, aml_index(madt, aml_int(3)))); |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 149 | aml_append(method, aml_store(cpu_on, aml_index(madt, aml_int(4)))); |
| 150 | aml_append(method, aml_return(madt)); |
| 151 | aml_append(sb_scope, method); |
| 152 | |
| 153 | /* |
| 154 | * _STA method - return ON status of cpu |
Igor Mammedov | 76bdd24 | 2016-05-17 16:43:03 +0200 | [diff] [blame] | 155 | * apic_id = Arg0 = Local APIC ID |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 156 | * cpu_on = Local0 = CPON flag for this cpu |
| 157 | */ |
| 158 | method = aml_method(CPU_STATUS_METHOD, 1, AML_NOTSERIALIZED); |
| 159 | aml_append(method, |
Igor Mammedov | 76bdd24 | 2016-05-17 16:43:03 +0200 | [diff] [blame] | 160 | aml_store(aml_derefof(aml_index(cpus_map, apic_id)), cpu_on)); |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 161 | if_ctx = aml_if(cpu_on); |
| 162 | { |
| 163 | aml_append(if_ctx, aml_return(aml_int(0xF))); |
| 164 | } |
| 165 | aml_append(method, if_ctx); |
| 166 | else_ctx = aml_else(); |
| 167 | { |
| 168 | aml_append(else_ctx, aml_return(zero)); |
| 169 | } |
| 170 | aml_append(method, else_ctx); |
| 171 | aml_append(sb_scope, method); |
| 172 | |
| 173 | method = aml_method(CPU_EJECT_METHOD, 2, AML_NOTSERIALIZED); |
| 174 | aml_append(method, aml_sleep(200)); |
| 175 | aml_append(sb_scope, method); |
| 176 | |
| 177 | method = aml_method(CPU_SCAN_METHOD, 0, AML_NOTSERIALIZED); |
| 178 | { |
| 179 | Aml *while_ctx, *if_ctx2, *else_ctx2; |
| 180 | Aml *bus_check_evt = aml_int(1); |
| 181 | Aml *remove_evt = aml_int(3); |
| 182 | Aml *status_map = aml_local(5); /* Local5 = active cpu bitmap */ |
| 183 | Aml *byte = aml_local(2); /* Local2 = last read byte from bitmap */ |
| 184 | Aml *idx = aml_local(0); /* Processor ID / APIC ID iterator */ |
| 185 | Aml *is_cpu_on = aml_local(1); /* Local1 = CPON flag for cpu */ |
| 186 | Aml *status = aml_local(3); /* Local3 = active state for cpu */ |
| 187 | |
| 188 | aml_append(method, aml_store(aml_name(CPU_STATUS_MAP), status_map)); |
| 189 | aml_append(method, aml_store(zero, byte)); |
| 190 | aml_append(method, aml_store(zero, idx)); |
| 191 | |
| 192 | /* While (idx < SizeOf(CPON)) */ |
| 193 | while_ctx = aml_while(aml_lless(idx, aml_sizeof(cpus_map))); |
| 194 | aml_append(while_ctx, |
| 195 | aml_store(aml_derefof(aml_index(cpus_map, idx)), is_cpu_on)); |
| 196 | |
| 197 | if_ctx = aml_if(aml_and(idx, aml_int(0x07), NULL)); |
| 198 | { |
| 199 | /* Shift down previously read bitmap byte */ |
| 200 | aml_append(if_ctx, aml_shiftright(byte, one, byte)); |
| 201 | } |
| 202 | aml_append(while_ctx, if_ctx); |
| 203 | |
| 204 | else_ctx = aml_else(); |
| 205 | { |
| 206 | /* Read next byte from cpu bitmap */ |
| 207 | aml_append(else_ctx, aml_store(aml_derefof(aml_index(status_map, |
| 208 | aml_shiftright(idx, aml_int(3), NULL))), byte)); |
| 209 | } |
| 210 | aml_append(while_ctx, else_ctx); |
| 211 | |
| 212 | aml_append(while_ctx, aml_store(aml_and(byte, one, NULL), status)); |
| 213 | if_ctx = aml_if(aml_lnot(aml_equal(is_cpu_on, status))); |
| 214 | { |
| 215 | /* State change - update CPON with new state */ |
| 216 | aml_append(if_ctx, aml_store(status, aml_index(cpus_map, idx))); |
| 217 | if_ctx2 = aml_if(aml_equal(status, one)); |
| 218 | { |
| 219 | aml_append(if_ctx2, |
| 220 | aml_call2(AML_NOTIFY_METHOD, idx, bus_check_evt)); |
| 221 | } |
| 222 | aml_append(if_ctx, if_ctx2); |
| 223 | else_ctx2 = aml_else(); |
| 224 | { |
| 225 | aml_append(else_ctx2, |
| 226 | aml_call2(AML_NOTIFY_METHOD, idx, remove_evt)); |
| 227 | } |
| 228 | } |
| 229 | aml_append(if_ctx, else_ctx2); |
| 230 | aml_append(while_ctx, if_ctx); |
| 231 | |
| 232 | aml_append(while_ctx, aml_increment(idx)); /* go to next cpu */ |
| 233 | aml_append(method, while_ctx); |
| 234 | } |
| 235 | aml_append(sb_scope, method); |
| 236 | |
| 237 | /* The current AML generator can cover the APIC ID range [0..255], |
| 238 | * inclusive, for VCPU hotplug. */ |
| 239 | QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256); |
Igor Mammedov | 6a91cf0 | 2016-10-19 14:05:34 +0200 | [diff] [blame] | 240 | if (pcms->apic_id_limit > ACPI_CPU_HOTPLUG_ID_LIMIT) { |
| 241 | error_report("max_cpus is too large. APIC ID of last CPU is %u", |
| 242 | pcms->apic_id_limit - 1); |
| 243 | exit(1); |
| 244 | } |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 245 | |
| 246 | /* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */ |
| 247 | dev = aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE)); |
| 248 | aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06"))); |
| 249 | aml_append(dev, |
| 250 | aml_name_decl("_UID", aml_string("CPU Hotplug resources")) |
| 251 | ); |
| 252 | /* device present, functioning, decoding, not shown in UI */ |
| 253 | aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); |
| 254 | crs = aml_resource_template(); |
| 255 | aml_append(crs, |
Igor Mammedov | ebd8ea8 | 2016-05-17 16:43:02 +0200 | [diff] [blame] | 256 | aml_io(AML_DECODE16, io_base, io_base, 1, ACPI_GPE_PROC_LEN) |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 257 | ); |
| 258 | aml_append(dev, aml_name_decl("_CRS", crs)); |
| 259 | aml_append(sb_scope, dev); |
| 260 | /* declare CPU hotplug MMIO region and PRS field to access it */ |
| 261 | aml_append(sb_scope, aml_operation_region( |
Igor Mammedov | ebd8ea8 | 2016-05-17 16:43:02 +0200 | [diff] [blame] | 262 | "PRST", AML_SYSTEM_IO, aml_int(io_base), ACPI_GPE_PROC_LEN)); |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 263 | field = aml_field("PRST", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); |
| 264 | aml_append(field, aml_named_field("PRS", 256)); |
| 265 | aml_append(sb_scope, field); |
| 266 | |
| 267 | /* build Processor object for each processor */ |
| 268 | for (i = 0; i < apic_ids->len; i++) { |
| 269 | int apic_id = apic_ids->cpus[i].arch_id; |
| 270 | |
| 271 | assert(apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT); |
| 272 | |
Igor Mammedov | 76bdd24 | 2016-05-17 16:43:03 +0200 | [diff] [blame] | 273 | dev = aml_processor(i, 0, 0, "CP%.02X", apic_id); |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 274 | |
| 275 | method = aml_method("_MAT", 0, AML_NOTSERIALIZED); |
| 276 | aml_append(method, |
Igor Mammedov | 76bdd24 | 2016-05-17 16:43:03 +0200 | [diff] [blame] | 277 | aml_return(aml_call2(CPU_MAT_METHOD, aml_int(apic_id), aml_int(i)) |
| 278 | )); |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 279 | aml_append(dev, method); |
| 280 | |
| 281 | method = aml_method("_STA", 0, AML_NOTSERIALIZED); |
| 282 | aml_append(method, |
| 283 | aml_return(aml_call1(CPU_STATUS_METHOD, aml_int(apic_id)))); |
| 284 | aml_append(dev, method); |
| 285 | |
| 286 | method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); |
| 287 | aml_append(method, |
| 288 | aml_return(aml_call2(CPU_EJECT_METHOD, aml_int(apic_id), |
| 289 | aml_arg(0))) |
| 290 | ); |
| 291 | aml_append(dev, method); |
| 292 | |
| 293 | aml_append(sb_scope, dev); |
| 294 | } |
| 295 | |
| 296 | /* build this code: |
| 297 | * Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...} |
| 298 | */ |
Igor Mammedov | 76bdd24 | 2016-05-17 16:43:03 +0200 | [diff] [blame] | 299 | /* Arg0 = APIC ID */ |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 300 | method = aml_method(AML_NOTIFY_METHOD, 2, AML_NOTSERIALIZED); |
| 301 | for (i = 0; i < apic_ids->len; i++) { |
| 302 | int apic_id = apic_ids->cpus[i].arch_id; |
| 303 | |
| 304 | if_ctx = aml_if(aml_equal(aml_arg(0), aml_int(apic_id))); |
| 305 | aml_append(if_ctx, |
| 306 | aml_notify(aml_name("CP%.02X", apic_id), aml_arg(1)) |
| 307 | ); |
| 308 | aml_append(method, if_ctx); |
| 309 | } |
| 310 | aml_append(sb_scope, method); |
| 311 | |
| 312 | /* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })" |
| 313 | * |
| 314 | * Note: The ability to create variable-sized packages was first |
| 315 | * introduced in ACPI 2.0. ACPI 1.0 only allowed fixed-size packages |
| 316 | * ith up to 255 elements. Windows guests up to win2k8 fail when |
| 317 | * VarPackageOp is used. |
| 318 | */ |
| 319 | pkg = pcms->apic_id_limit <= 255 ? aml_package(pcms->apic_id_limit) : |
| 320 | aml_varpackage(pcms->apic_id_limit); |
| 321 | |
| 322 | for (i = 0, apic_idx = 0; i < apic_ids->len; i++) { |
| 323 | int apic_id = apic_ids->cpus[i].arch_id; |
| 324 | |
| 325 | for (; apic_idx < apic_id; apic_idx++) { |
| 326 | aml_append(pkg, aml_int(0)); |
| 327 | } |
| 328 | aml_append(pkg, aml_int(apic_ids->cpus[i].cpu ? 1 : 0)); |
| 329 | apic_idx = apic_id + 1; |
| 330 | } |
| 331 | aml_append(sb_scope, aml_name_decl(CPU_ON_BITMAP, pkg)); |
Igor Mammedov | 672a287 | 2016-05-17 16:43:01 +0200 | [diff] [blame] | 332 | aml_append(ctx, sb_scope); |
| 333 | |
| 334 | method = aml_method("\\_GPE._E02", 0, AML_NOTSERIALIZED); |
| 335 | aml_append(method, aml_call0("\\_SB." CPU_SCAN_METHOD)); |
| 336 | aml_append(ctx, method); |
| 337 | } |