1 /* Support for generating ACPI tables and passing them to Guests
4 * Copyright (C) 2006 Fabrice Bellard
5 * Copyright (C) 2013 Red Hat Inc
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, see <http://www.gnu.org/licenses/>.
23 #include "acpi-build.h"
26 #include "qemu-common.h"
27 #include "qemu/bitmap.h"
28 #include "qemu/osdep.h"
29 #include "qemu/range.h"
30 #include "qemu/error-report.h"
31 #include "hw/pci/pci.h"
33 #include "hw/i386/pc.h"
34 #include "target-i386/cpu.h"
35 #include "hw/timer/hpet.h"
36 #include "hw/acpi/acpi-defs.h"
37 #include "hw/acpi/acpi.h"
38 #include "hw/nvram/fw_cfg.h"
39 #include "hw/acpi/bios-linker-loader.h"
40 #include "hw/loader.h"
41 #include "hw/isa/isa.h"
42 #include "hw/acpi/memory_hotplug.h"
43 #include "sysemu/tpm.h"
44 #include "hw/acpi/tpm.h"
46 /* Supported chipsets: */
47 #include "hw/acpi/piix4.h"
48 #include "hw/acpi/pcihp.h"
49 #include "hw/i386/ich9.h"
50 #include "hw/pci/pci_bus.h"
51 #include "hw/pci-host/q35.h"
52 #include "hw/i386/intel_iommu.h"
54 #include "hw/i386/q35-acpi-dsdt.hex"
55 #include "hw/i386/acpi-dsdt.hex"
57 #include "hw/acpi/aml-build.h"
59 #include "qapi/qmp/qint.h"
60 #include "qom/qom-qobject.h"
61 #include "exec/ram_addr.h"
63 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and
64 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows
65 * a little bit, there should be plenty of free space since the DSDT
66 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1.
68 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97
69 #define ACPI_BUILD_ALIGN_SIZE 0x1000
71 #define ACPI_BUILD_TABLE_SIZE 0x20000
73 /* #define DEBUG_ACPI_BUILD */
74 #ifdef DEBUG_ACPI_BUILD
75 #define ACPI_BUILD_DPRINTF(fmt, ...) \
76 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0)
78 #define ACPI_BUILD_DPRINTF(fmt, ...)
81 typedef struct AcpiCpuInfo {
82 DECLARE_BITMAP(found_cpus, ACPI_CPU_HOTPLUG_ID_LIMIT);
85 typedef struct AcpiMcfgInfo {
90 typedef struct AcpiPmInfo {
96 uint8_t acpi_enable_cmd;
97 uint8_t acpi_disable_cmd;
99 uint32_t gpe0_blk_len;
101 uint16_t cpu_hp_io_base;
102 uint16_t cpu_hp_io_len;
103 uint16_t mem_hp_io_base;
104 uint16_t mem_hp_io_len;
105 uint16_t pcihp_io_base;
106 uint16_t pcihp_io_len;
109 typedef struct AcpiMiscInfo {
112 const unsigned char *dsdt_code;
114 uint16_t pvpanic_port;
115 uint16_t applesmc_io_base;
118 typedef struct AcpiBuildPciBusHotplugState {
119 GArray *device_table;
120 GArray *notify_table;
121 struct AcpiBuildPciBusHotplugState *parent;
122 bool pcihp_bridge_en;
123 } AcpiBuildPciBusHotplugState;
125 static void acpi_get_dsdt(AcpiMiscInfo *info)
127 Object *piix = piix4_pm_find();
128 Object *lpc = ich9_lpc_find();
129 assert(!!piix != !!lpc);
132 info->dsdt_code = AcpiDsdtAmlCode;
133 info->dsdt_size = sizeof AcpiDsdtAmlCode;
136 info->dsdt_code = Q35AcpiDsdtAmlCode;
137 info->dsdt_size = sizeof Q35AcpiDsdtAmlCode;
142 int acpi_add_cpu_info(Object *o, void *opaque)
144 AcpiCpuInfo *cpu = opaque;
147 if (object_dynamic_cast(o, TYPE_CPU)) {
148 apic_id = object_property_get_int(o, "apic-id", NULL);
149 assert(apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT);
151 set_bit(apic_id, cpu->found_cpus);
154 object_child_foreach(o, acpi_add_cpu_info, opaque);
158 static void acpi_get_cpu_info(AcpiCpuInfo *cpu)
160 Object *root = object_get_root();
162 memset(cpu->found_cpus, 0, sizeof cpu->found_cpus);
163 object_child_foreach(root, acpi_add_cpu_info, cpu);
166 static void acpi_get_pm_info(AcpiPmInfo *pm)
168 Object *piix = piix4_pm_find();
169 Object *lpc = ich9_lpc_find();
173 pm->pcihp_io_base = 0;
174 pm->pcihp_io_len = 0;
177 pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE;
179 object_property_get_int(obj, ACPI_PCIHP_IO_BASE_PROP, NULL);
181 object_property_get_int(obj, ACPI_PCIHP_IO_LEN_PROP, NULL);
185 pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE;
189 pm->cpu_hp_io_len = ACPI_GPE_PROC_LEN;
190 pm->mem_hp_io_base = ACPI_MEMORY_HOTPLUG_BASE;
191 pm->mem_hp_io_len = ACPI_MEMORY_HOTPLUG_IO_LEN;
193 /* Fill in optional s3/s4 related properties */
194 o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL);
196 pm->s3_disabled = qint_get_int(qobject_to_qint(o));
198 pm->s3_disabled = false;
201 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL);
203 pm->s4_disabled = qint_get_int(qobject_to_qint(o));
205 pm->s4_disabled = false;
208 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL);
210 pm->s4_val = qint_get_int(qobject_to_qint(o));
216 /* Fill in mandatory properties */
217 pm->sci_int = object_property_get_int(obj, ACPI_PM_PROP_SCI_INT, NULL);
219 pm->acpi_enable_cmd = object_property_get_int(obj,
220 ACPI_PM_PROP_ACPI_ENABLE_CMD,
222 pm->acpi_disable_cmd = object_property_get_int(obj,
223 ACPI_PM_PROP_ACPI_DISABLE_CMD,
225 pm->io_base = object_property_get_int(obj, ACPI_PM_PROP_PM_IO_BASE,
227 pm->gpe0_blk = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK,
229 pm->gpe0_blk_len = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
231 pm->pcihp_bridge_en =
232 object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support",
236 static void acpi_get_misc_info(AcpiMiscInfo *info)
238 info->has_hpet = hpet_find();
239 info->has_tpm = tpm_find();
240 info->pvpanic_port = pvpanic_port();
241 info->applesmc_io_base = applesmc_port();
244 static void acpi_get_pci_info(PcPciInfo *info)
249 pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
250 g_assert(!ambiguous);
253 info->w32.begin = object_property_get_int(pci_host,
254 PCI_HOST_PROP_PCI_HOLE_START,
256 info->w32.end = object_property_get_int(pci_host,
257 PCI_HOST_PROP_PCI_HOLE_END,
259 info->w64.begin = object_property_get_int(pci_host,
260 PCI_HOST_PROP_PCI_HOLE64_START,
262 info->w64.end = object_property_get_int(pci_host,
263 PCI_HOST_PROP_PCI_HOLE64_END,
267 #define ACPI_PORT_SMI_CMD 0x00b2 /* TODO: this is APM_CNT_IOPORT */
269 static void acpi_align_size(GArray *blob, unsigned align)
271 /* Align size to multiple of given size. This reduces the chance
272 * we need to change size in the future (breaking cross version migration).
274 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
279 build_facs(GArray *table_data, GArray *linker, PcGuestInfo *guest_info)
281 AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs);
282 memcpy(&facs->signature, "FACS", 4);
283 facs->length = cpu_to_le32(sizeof(*facs));
286 /* Load chipset information in FADT */
287 static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm)
291 fadt->sci_int = cpu_to_le16(pm->sci_int);
292 fadt->smi_cmd = cpu_to_le32(ACPI_PORT_SMI_CMD);
293 fadt->acpi_enable = pm->acpi_enable_cmd;
294 fadt->acpi_disable = pm->acpi_disable_cmd;
295 /* EVT, CNT, TMR offset matches hw/acpi/core.c */
296 fadt->pm1a_evt_blk = cpu_to_le32(pm->io_base);
297 fadt->pm1a_cnt_blk = cpu_to_le32(pm->io_base + 0x04);
298 fadt->pm_tmr_blk = cpu_to_le32(pm->io_base + 0x08);
299 fadt->gpe0_blk = cpu_to_le32(pm->gpe0_blk);
300 /* EVT, CNT, TMR length matches hw/acpi/core.c */
301 fadt->pm1_evt_len = 4;
302 fadt->pm1_cnt_len = 2;
303 fadt->pm_tmr_len = 4;
304 fadt->gpe0_blk_len = pm->gpe0_blk_len;
305 fadt->plvl2_lat = cpu_to_le16(0xfff); /* C2 state not supported */
306 fadt->plvl3_lat = cpu_to_le16(0xfff); /* C3 state not supported */
307 fadt->flags = cpu_to_le32((1 << ACPI_FADT_F_WBINVD) |
308 (1 << ACPI_FADT_F_PROC_C1) |
309 (1 << ACPI_FADT_F_SLP_BUTTON) |
310 (1 << ACPI_FADT_F_RTC_S4));
311 fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_USE_PLATFORM_CLOCK);
312 /* APIC destination mode ("Flat Logical") has an upper limit of 8 CPUs
313 * For more than 8 CPUs, "Clustered Logical" mode has to be used
316 fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL);
323 build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm,
324 unsigned facs, unsigned dsdt)
326 AcpiFadtDescriptorRev1 *fadt = acpi_data_push(table_data, sizeof(*fadt));
328 fadt->firmware_ctrl = cpu_to_le32(facs);
329 /* FACS address to be filled by Guest linker */
330 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
331 ACPI_BUILD_TABLE_FILE,
332 table_data, &fadt->firmware_ctrl,
333 sizeof fadt->firmware_ctrl);
335 fadt->dsdt = cpu_to_le32(dsdt);
336 /* DSDT address to be filled by Guest linker */
337 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
338 ACPI_BUILD_TABLE_FILE,
339 table_data, &fadt->dsdt,
342 fadt_setup(fadt, pm);
344 build_header(linker, table_data,
345 (void *)fadt, "FACP", sizeof(*fadt), 1);
349 build_madt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu,
350 PcGuestInfo *guest_info)
352 int madt_start = table_data->len;
354 AcpiMultipleApicTable *madt;
355 AcpiMadtIoApic *io_apic;
356 AcpiMadtIntsrcovr *intsrcovr;
357 AcpiMadtLocalNmi *local_nmi;
360 madt = acpi_data_push(table_data, sizeof *madt);
361 madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS);
362 madt->flags = cpu_to_le32(1);
364 for (i = 0; i < guest_info->apic_id_limit; i++) {
365 AcpiMadtProcessorApic *apic = acpi_data_push(table_data, sizeof *apic);
366 apic->type = ACPI_APIC_PROCESSOR;
367 apic->length = sizeof(*apic);
368 apic->processor_id = i;
369 apic->local_apic_id = i;
370 if (test_bit(i, cpu->found_cpus)) {
371 apic->flags = cpu_to_le32(1);
373 apic->flags = cpu_to_le32(0);
376 io_apic = acpi_data_push(table_data, sizeof *io_apic);
377 io_apic->type = ACPI_APIC_IO;
378 io_apic->length = sizeof(*io_apic);
379 #define ACPI_BUILD_IOAPIC_ID 0x0
380 io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID;
381 io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS);
382 io_apic->interrupt = cpu_to_le32(0);
384 if (guest_info->apic_xrupt_override) {
385 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
386 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
387 intsrcovr->length = sizeof(*intsrcovr);
388 intsrcovr->source = 0;
389 intsrcovr->gsi = cpu_to_le32(2);
390 intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */
392 for (i = 1; i < 16; i++) {
393 #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11))
394 if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) {
395 /* No need for a INT source override structure. */
398 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
399 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
400 intsrcovr->length = sizeof(*intsrcovr);
401 intsrcovr->source = i;
402 intsrcovr->gsi = cpu_to_le32(i);
403 intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */
406 local_nmi = acpi_data_push(table_data, sizeof *local_nmi);
407 local_nmi->type = ACPI_APIC_LOCAL_NMI;
408 local_nmi->length = sizeof(*local_nmi);
409 local_nmi->processor_id = 0xff; /* all processors */
410 local_nmi->flags = cpu_to_le16(0);
411 local_nmi->lint = 1; /* ACPI_LINT1 */
413 build_header(linker, table_data,
414 (void *)(table_data->data + madt_start), "APIC",
415 table_data->len - madt_start, 1);
418 #include "hw/i386/ssdt-tpm.hex"
420 /* Assign BSEL property to all buses. In the future, this can be changed
421 * to only assign to buses that support hotplug.
423 static void *acpi_set_bsel(PCIBus *bus, void *opaque)
425 unsigned *bsel_alloc = opaque;
428 if (qbus_is_hotpluggable(BUS(bus))) {
429 bus_bsel = g_malloc(sizeof *bus_bsel);
431 *bus_bsel = (*bsel_alloc)++;
432 object_property_add_uint32_ptr(OBJECT(bus), ACPI_PCIHP_PROP_BSEL,
439 static void acpi_set_pci_info(void)
441 PCIBus *bus = find_i440fx(); /* TODO: Q35 support */
442 unsigned bsel_alloc = 0;
445 /* Scan all PCI buses. Set property to enable acpi based hotplug. */
446 pci_for_each_bus_depth_first(bus, acpi_set_bsel, NULL, &bsel_alloc);
450 static void build_append_pcihp_notify_entry(Aml *method, int slot)
453 int32_t devfn = PCI_DEVFN(slot, 0);
455 if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot)));
456 aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1)));
457 aml_append(method, if_ctx);
460 static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
461 bool pcihp_bridge_en)
463 Aml *dev, *notify_method, *method;
468 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL);
470 int64_t bsel_val = qint_get_int(qobject_to_qint(bsel));
472 aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val)));
473 notify_method = aml_method("DVNT", 2);
476 for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) {
479 PCIDevice *pdev = bus->devices[i];
480 int slot = PCI_SLOT(i);
481 bool hotplug_enabled_dev;
485 if (bsel) { /* add hotplug slots for non present devices */
486 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
487 aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
488 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
489 method = aml_method("_EJ0", 1);
491 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
493 aml_append(dev, method);
494 aml_append(parent_scope, dev);
496 build_append_pcihp_notify_entry(notify_method, slot);
501 pc = PCI_DEVICE_GET_CLASS(pdev);
502 dc = DEVICE_GET_CLASS(pdev);
504 /* When hotplug for bridges is enabled, bridges are
505 * described in ACPI separately (see build_pci_bus_end).
506 * In this case they aren't themselves hot-pluggable.
507 * Hotplugged bridges *are* hot-pluggable.
509 bridge_in_acpi = pc->is_bridge && pcihp_bridge_en &&
510 !DEVICE(pdev)->hotplugged;
512 hotplug_enabled_dev = bsel && dc->hotpluggable && !bridge_in_acpi;
514 if (pc->class_id == PCI_CLASS_BRIDGE_ISA) {
518 /* start to compose PCI slot descriptor */
519 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
520 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
522 if (pc->class_id == PCI_CLASS_DISPLAY_VGA) {
523 /* add VGA specific AML methods */
526 if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) {
532 method = aml_method("_S1D", 0);
533 aml_append(method, aml_return(aml_int(0)));
534 aml_append(dev, method);
536 method = aml_method("_S2D", 0);
537 aml_append(method, aml_return(aml_int(0)));
538 aml_append(dev, method);
540 method = aml_method("_S3D", 0);
541 aml_append(method, aml_return(aml_int(s3d)));
542 aml_append(dev, method);
543 } else if (hotplug_enabled_dev) {
544 /* add _SUN/_EJ0 to make slot hotpluggable */
545 aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
547 method = aml_method("_EJ0", 1);
549 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
551 aml_append(dev, method);
554 build_append_pcihp_notify_entry(notify_method, slot);
556 } else if (bridge_in_acpi) {
558 * device is coldplugged bridge,
559 * add child device descriptions into its scope
561 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev));
563 build_append_pci_bus_devices(dev, sec_bus, pcihp_bridge_en);
565 /* slot descriptor has been composed, add it into parent context */
566 aml_append(parent_scope, dev);
570 aml_append(parent_scope, notify_method);
573 /* Append PCNT method to notify about events on local and child buses.
574 * Add unconditionally for root since DSDT expects it.
576 method = aml_method("PCNT", 0);
578 /* If bus supports hotplug select it and notify about local events */
580 int64_t bsel_val = qint_get_int(qobject_to_qint(bsel));
581 aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM")));
583 aml_call2("DVNT", aml_name("PCIU"), aml_int(1) /* Device Check */)
586 aml_call2("DVNT", aml_name("PCID"), aml_int(3)/* Eject Request */)
590 /* Notify about child bus events in any case */
591 if (pcihp_bridge_en) {
592 QLIST_FOREACH(sec, &bus->child, sibling) {
593 int32_t devfn = sec->parent_dev->devfn;
595 aml_append(method, aml_name("^S%.02X.PCNT", devfn));
598 aml_append(parent_scope, method);
602 build_ssdt(GArray *table_data, GArray *linker,
603 AcpiCpuInfo *cpu, AcpiPmInfo *pm, AcpiMiscInfo *misc,
604 PcPciInfo *pci, PcGuestInfo *guest_info)
606 MachineState *machine = MACHINE(qdev_get_machine());
607 uint32_t nr_mem = machine->ram_slots;
608 unsigned acpi_cpus = guest_info->apic_id_limit;
609 Aml *ssdt, *sb_scope, *scope, *pkg, *dev, *method, *crs, *field, *ifctx;
612 ssdt = init_aml_allocator();
613 /* The current AML generator can cover the APIC ID range [0..255],
614 * inclusive, for VCPU hotplug. */
615 QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256);
616 g_assert(acpi_cpus <= ACPI_CPU_HOTPLUG_ID_LIMIT);
618 /* Reserve space for header */
619 acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader));
621 scope = aml_scope("\\_SB.PCI0");
622 /* build PCI0._CRS */
623 crs = aml_resource_template();
625 aml_word_bus_number(aml_min_fixed, aml_max_fixed, aml_pos_decode,
626 0x0000, 0x0000, 0x00FF, 0x0000, 0x0100));
627 aml_append(crs, aml_io(aml_decode16, 0x0CF8, 0x0CF8, 0x01, 0x08));
630 aml_word_io(aml_min_fixed, aml_max_fixed,
631 aml_pos_decode, aml_entire_range,
632 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8));
634 aml_word_io(aml_min_fixed, aml_max_fixed,
635 aml_pos_decode, aml_entire_range,
636 0x0000, 0x0D00, 0xFFFF, 0x0000, 0xF300));
638 aml_dword_memory(aml_pos_decode, aml_min_fixed, aml_max_fixed,
639 aml_cacheable, aml_ReadWrite,
640 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000));
642 aml_dword_memory(aml_pos_decode, aml_min_fixed, aml_max_fixed,
643 aml_non_cacheable, aml_ReadWrite,
644 0, pci->w32.begin, pci->w32.end - 1, 0,
645 pci->w32.end - pci->w32.begin));
646 if (pci->w64.begin) {
648 aml_qword_memory(aml_pos_decode, aml_min_fixed, aml_max_fixed,
649 aml_cacheable, aml_ReadWrite,
650 0, pci->w64.begin, pci->w64.end - 1, 0,
651 pci->w64.end - pci->w64.begin));
653 aml_append(scope, aml_name_decl("_CRS", crs));
655 /* reserve GPE0 block resources */
656 dev = aml_device("GPE0");
657 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
658 aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources")));
659 /* device present, functioning, decoding, not shown in UI */
660 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
661 crs = aml_resource_template();
663 aml_io(aml_decode16, pm->gpe0_blk, pm->gpe0_blk, 1, pm->gpe0_blk_len)
665 aml_append(dev, aml_name_decl("_CRS", crs));
666 aml_append(scope, dev);
668 /* reserve PCIHP resources */
669 if (pm->pcihp_io_len) {
670 dev = aml_device("PHPR");
671 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
673 aml_name_decl("_UID", aml_string("PCI Hotplug resources")));
674 /* device present, functioning, decoding, not shown in UI */
675 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
676 crs = aml_resource_template();
678 aml_io(aml_decode16, pm->pcihp_io_base, pm->pcihp_io_base, 1,
681 aml_append(dev, aml_name_decl("_CRS", crs));
682 aml_append(scope, dev);
684 aml_append(ssdt, scope);
686 /* create S3_ / S4_ / S5_ packages if necessary */
687 scope = aml_scope("\\");
688 if (!pm->s3_disabled) {
689 pkg = aml_package(4);
690 aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */
691 aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
692 aml_append(pkg, aml_int(0)); /* reserved */
693 aml_append(pkg, aml_int(0)); /* reserved */
694 aml_append(scope, aml_name_decl("_S3", pkg));
697 if (!pm->s4_disabled) {
698 pkg = aml_package(4);
699 aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */
700 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
701 aml_append(pkg, aml_int(pm->s4_val));
702 aml_append(pkg, aml_int(0)); /* reserved */
703 aml_append(pkg, aml_int(0)); /* reserved */
704 aml_append(scope, aml_name_decl("_S4", pkg));
707 pkg = aml_package(4);
708 aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */
709 aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */
710 aml_append(pkg, aml_int(0)); /* reserved */
711 aml_append(pkg, aml_int(0)); /* reserved */
712 aml_append(scope, aml_name_decl("_S5", pkg));
713 aml_append(ssdt, scope);
715 if (misc->applesmc_io_base) {
716 scope = aml_scope("\\_SB.PCI0.ISA");
717 dev = aml_device("SMC");
719 aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0001")));
720 /* device present, functioning, decoding, not shown in UI */
721 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
723 crs = aml_resource_template();
725 aml_io(aml_decode16, misc->applesmc_io_base, misc->applesmc_io_base,
726 0x01, APPLESMC_MAX_DATA_LENGTH)
728 aml_append(crs, aml_irq_no_flags(6));
729 aml_append(dev, aml_name_decl("_CRS", crs));
731 aml_append(scope, dev);
732 aml_append(ssdt, scope);
735 if (misc->pvpanic_port) {
736 scope = aml_scope("\\_SB.PCI0.ISA");
738 dev = aml_device("PEVR");
739 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0001")));
741 crs = aml_resource_template();
743 aml_io(aml_decode16, misc->pvpanic_port, misc->pvpanic_port, 1, 1)
745 aml_append(dev, aml_name_decl("_CRS", crs));
747 aml_append(dev, aml_operation_region("PEOR", aml_system_io,
748 misc->pvpanic_port, 1));
749 field = aml_field("PEOR", aml_byte_acc);
750 aml_append(field, aml_named_field("PEPT", 8));
751 aml_append(dev, field);
753 method = aml_method("RDPT", 0);
754 aml_append(method, aml_store(aml_name("PEPT"), aml_local(0)));
755 aml_append(method, aml_return(aml_local(0)));
756 aml_append(dev, method);
758 method = aml_method("WRPT", 1);
759 aml_append(method, aml_store(aml_arg(0), aml_name("PEPT")));
760 aml_append(dev, method);
762 aml_append(scope, dev);
763 aml_append(ssdt, scope);
766 sb_scope = aml_scope("_SB");
768 /* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */
769 dev = aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE));
770 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06")));
772 aml_name_decl("_UID", aml_string("CPU Hotplug resources"))
774 /* device present, functioning, decoding, not shown in UI */
775 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
776 crs = aml_resource_template();
778 aml_io(aml_decode16, pm->cpu_hp_io_base, pm->cpu_hp_io_base, 1,
781 aml_append(dev, aml_name_decl("_CRS", crs));
782 aml_append(sb_scope, dev);
783 /* declare CPU hotplug MMIO region and PRS field to access it */
784 aml_append(sb_scope, aml_operation_region(
785 "PRST", aml_system_io, pm->cpu_hp_io_base, pm->cpu_hp_io_len));
786 field = aml_field("PRST", aml_byte_acc);
787 aml_append(field, aml_named_field("PRS", 256));
788 aml_append(sb_scope, field);
790 /* build Processor object for each processor */
791 for (i = 0; i < acpi_cpus; i++) {
792 dev = aml_processor(i, 0, 0, "CP%.02X", i);
794 method = aml_method("_MAT", 0);
795 aml_append(method, aml_return(aml_call1("CPMA", aml_int(i))));
796 aml_append(dev, method);
798 method = aml_method("_STA", 0);
799 aml_append(method, aml_return(aml_call1("CPST", aml_int(i))));
800 aml_append(dev, method);
802 method = aml_method("_EJ0", 1);
804 aml_return(aml_call2("CPEJ", aml_int(i), aml_arg(0)))
806 aml_append(dev, method);
808 aml_append(sb_scope, dev);
812 * Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...}
814 /* Arg0 = Processor ID = APIC ID */
815 method = aml_method("NTFY", 2);
816 for (i = 0; i < acpi_cpus; i++) {
817 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
819 aml_notify(aml_name("CP%.02X", i), aml_arg(1))
821 aml_append(method, ifctx);
823 aml_append(sb_scope, method);
825 /* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })"
827 * Note: The ability to create variable-sized packages was first
828 * introduced in ACPI 2.0. ACPI 1.0 only allowed fixed-size packages
829 * ith up to 255 elements. Windows guests up to win2k8 fail when
830 * VarPackageOp is used.
832 pkg = acpi_cpus <= 255 ? aml_package(acpi_cpus) :
833 aml_varpackage(acpi_cpus);
835 for (i = 0; i < acpi_cpus; i++) {
836 uint8_t b = test_bit(i, cpu->found_cpus) ? 0x01 : 0x00;
837 aml_append(pkg, aml_int(b));
839 aml_append(sb_scope, aml_name_decl("CPON", pkg));
841 /* build memory devices */
842 assert(nr_mem <= ACPI_MAX_RAM_SLOTS);
843 scope = aml_scope("\\_SB.PCI0." stringify(MEMORY_HOTPLUG_DEVICE));
845 aml_name_decl(stringify(MEMORY_SLOTS_NUMBER), aml_int(nr_mem))
848 crs = aml_resource_template();
850 aml_io(aml_decode16, pm->mem_hp_io_base, pm->mem_hp_io_base, 0,
853 aml_append(scope, aml_name_decl("_CRS", crs));
855 aml_append(scope, aml_operation_region(
856 stringify(MEMORY_HOTPLUG_IO_REGION), aml_system_io,
857 pm->mem_hp_io_base, pm->mem_hp_io_len)
860 field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), aml_dword_acc);
861 aml_append(field, /* read only */
862 aml_named_field(stringify(MEMORY_SLOT_ADDR_LOW), 32));
863 aml_append(field, /* read only */
864 aml_named_field(stringify(MEMORY_SLOT_ADDR_HIGH), 32));
865 aml_append(field, /* read only */
866 aml_named_field(stringify(MEMORY_SLOT_SIZE_LOW), 32));
867 aml_append(field, /* read only */
868 aml_named_field(stringify(MEMORY_SLOT_SIZE_HIGH), 32));
869 aml_append(field, /* read only */
870 aml_named_field(stringify(MEMORY_SLOT_PROXIMITY), 32));
871 aml_append(scope, field);
873 field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), aml_byte_acc);
874 aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */));
875 aml_append(field, /* 1 if enabled, read only */
876 aml_named_field(stringify(MEMORY_SLOT_ENABLED), 1));
878 /*(read) 1 if has a insert event. (write) 1 to clear event */
879 aml_named_field(stringify(MEMORY_SLOT_INSERT_EVENT), 1));
880 aml_append(scope, field);
882 field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), aml_dword_acc);
883 aml_append(field, /* DIMM selector, write only */
884 aml_named_field(stringify(MEMORY_SLOT_SLECTOR), 32));
885 aml_append(field, /* _OST event code, write only */
886 aml_named_field(stringify(MEMORY_SLOT_OST_EVENT), 32));
887 aml_append(field, /* _OST status code, write only */
888 aml_named_field(stringify(MEMORY_SLOT_OST_STATUS), 32));
889 aml_append(scope, field);
891 aml_append(sb_scope, scope);
893 for (i = 0; i < nr_mem; i++) {
894 #define BASEPATH "\\_SB.PCI0." stringify(MEMORY_HOTPLUG_DEVICE) "."
897 dev = aml_device("MP%02X", i);
898 aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i)));
899 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80")));
901 method = aml_method("_CRS", 0);
902 s = BASEPATH stringify(MEMORY_SLOT_CRS_METHOD);
903 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
904 aml_append(dev, method);
906 method = aml_method("_STA", 0);
907 s = BASEPATH stringify(MEMORY_SLOT_STATUS_METHOD);
908 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
909 aml_append(dev, method);
911 method = aml_method("_PXM", 0);
912 s = BASEPATH stringify(MEMORY_SLOT_PROXIMITY_METHOD);
913 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
914 aml_append(dev, method);
916 method = aml_method("_OST", 3);
917 s = BASEPATH stringify(MEMORY_SLOT_OST_METHOD);
918 aml_append(method, aml_return(aml_call4(
919 s, aml_name("_UID"), aml_arg(0), aml_arg(1), aml_arg(2)
921 aml_append(dev, method);
923 aml_append(sb_scope, dev);
926 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) {
927 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... }
929 method = aml_method(stringify(MEMORY_SLOT_NOTIFY_METHOD), 2);
930 for (i = 0; i < nr_mem; i++) {
931 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
933 aml_notify(aml_name("MP%.02X", i), aml_arg(1))
935 aml_append(method, ifctx);
937 aml_append(sb_scope, method);
944 pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
945 if (!ambiguous && pci_host) {
946 bus = PCI_HOST_BRIDGE(pci_host)->bus;
950 Aml *scope = aml_scope("PCI0");
951 /* Scan all PCI buses. Generate tables to support hotplug. */
952 build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en);
953 aml_append(sb_scope, scope);
956 aml_append(ssdt, sb_scope);
959 /* copy AML table into ACPI tables blob and patch header there */
960 g_array_append_vals(table_data, ssdt->buf->data, ssdt->buf->len);
961 build_header(linker, table_data,
962 (void *)(table_data->data + table_data->len - ssdt->buf->len),
963 "SSDT", ssdt->buf->len, 1);
964 free_aml_allocator();
968 build_hpet(GArray *table_data, GArray *linker)
972 hpet = acpi_data_push(table_data, sizeof(*hpet));
973 /* Note timer_block_id value must be kept in sync with value advertised by
976 hpet->timer_block_id = cpu_to_le32(0x8086a201);
977 hpet->addr.address = cpu_to_le64(HPET_BASE);
978 build_header(linker, table_data,
979 (void *)hpet, "HPET", sizeof(*hpet), 1);
983 build_tpm_tcpa(GArray *table_data, GArray *linker, GArray *tcpalog)
985 Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa);
986 uint64_t log_area_start_address = acpi_data_len(tcpalog);
988 tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT);
989 tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE);
990 tcpa->log_area_start_address = cpu_to_le64(log_area_start_address);
992 bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, 1,
993 false /* high memory */);
995 /* log area start address to be filled by Guest linker */
996 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
997 ACPI_BUILD_TPMLOG_FILE,
998 table_data, &tcpa->log_area_start_address,
999 sizeof(tcpa->log_area_start_address));
1001 build_header(linker, table_data,
1002 (void *)tcpa, "TCPA", sizeof(*tcpa), 2);
1004 acpi_data_push(tcpalog, TPM_LOG_AREA_MINIMUM_SIZE);
1008 build_tpm_ssdt(GArray *table_data, GArray *linker)
1012 tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm_aml));
1013 memcpy(tpm_ptr, ssdt_tpm_aml, sizeof(ssdt_tpm_aml));
1017 MEM_AFFINITY_NOFLAGS = 0,
1018 MEM_AFFINITY_ENABLED = (1 << 0),
1019 MEM_AFFINITY_HOTPLUGGABLE = (1 << 1),
1020 MEM_AFFINITY_NON_VOLATILE = (1 << 2),
1021 } MemoryAffinityFlags;
1024 acpi_build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
1025 uint64_t len, int node, MemoryAffinityFlags flags)
1027 numamem->type = ACPI_SRAT_MEMORY;
1028 numamem->length = sizeof(*numamem);
1029 memset(numamem->proximity, 0, 4);
1030 numamem->proximity[0] = node;
1031 numamem->flags = cpu_to_le32(flags);
1032 numamem->base_addr = cpu_to_le64(base);
1033 numamem->range_length = cpu_to_le64(len);
1037 build_srat(GArray *table_data, GArray *linker, PcGuestInfo *guest_info)
1039 AcpiSystemResourceAffinityTable *srat;
1040 AcpiSratProcessorAffinity *core;
1041 AcpiSratMemoryAffinity *numamem;
1045 int srat_start, numa_start, slots;
1046 uint64_t mem_len, mem_base, next_base;
1047 PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
1048 ram_addr_t hotplugabble_address_space_size =
1049 object_property_get_int(OBJECT(pcms), PC_MACHINE_MEMHP_REGION_SIZE,
1052 srat_start = table_data->len;
1054 srat = acpi_data_push(table_data, sizeof *srat);
1055 srat->reserved1 = cpu_to_le32(1);
1056 core = (void *)(srat + 1);
1058 for (i = 0; i < guest_info->apic_id_limit; ++i) {
1059 core = acpi_data_push(table_data, sizeof *core);
1060 core->type = ACPI_SRAT_PROCESSOR;
1061 core->length = sizeof(*core);
1062 core->local_apic_id = i;
1063 curnode = guest_info->node_cpu[i];
1064 core->proximity_lo = curnode;
1065 memset(core->proximity_hi, 0, 3);
1066 core->local_sapic_eid = 0;
1067 core->flags = cpu_to_le32(1);
1071 /* the memory map is a bit tricky, it contains at least one hole
1072 * from 640k-1M and possibly another one from 3.5G-4G.
1075 numa_start = table_data->len;
1077 numamem = acpi_data_push(table_data, sizeof *numamem);
1078 acpi_build_srat_memory(numamem, 0, 640*1024, 0, MEM_AFFINITY_ENABLED);
1079 next_base = 1024 * 1024;
1080 for (i = 1; i < guest_info->numa_nodes + 1; ++i) {
1081 mem_base = next_base;
1082 mem_len = guest_info->node_mem[i - 1];
1084 mem_len -= 1024 * 1024;
1086 next_base = mem_base + mem_len;
1088 /* Cut out the ACPI_PCI hole */
1089 if (mem_base <= guest_info->ram_size_below_4g &&
1090 next_base > guest_info->ram_size_below_4g) {
1091 mem_len -= next_base - guest_info->ram_size_below_4g;
1093 numamem = acpi_data_push(table_data, sizeof *numamem);
1094 acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1,
1095 MEM_AFFINITY_ENABLED);
1097 mem_base = 1ULL << 32;
1098 mem_len = next_base - guest_info->ram_size_below_4g;
1099 next_base += (1ULL << 32) - guest_info->ram_size_below_4g;
1101 numamem = acpi_data_push(table_data, sizeof *numamem);
1102 acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1,
1103 MEM_AFFINITY_ENABLED);
1105 slots = (table_data->len - numa_start) / sizeof *numamem;
1106 for (; slots < guest_info->numa_nodes + 2; slots++) {
1107 numamem = acpi_data_push(table_data, sizeof *numamem);
1108 acpi_build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
1112 * Entry is required for Windows to enable memory hotplug in OS.
1113 * Memory devices may override proximity set by this entry,
1114 * providing _PXM method if necessary.
1116 if (hotplugabble_address_space_size) {
1117 numamem = acpi_data_push(table_data, sizeof *numamem);
1118 acpi_build_srat_memory(numamem, pcms->hotplug_memory_base,
1119 hotplugabble_address_space_size, 0,
1120 MEM_AFFINITY_HOTPLUGGABLE |
1121 MEM_AFFINITY_ENABLED);
1124 build_header(linker, table_data,
1125 (void *)(table_data->data + srat_start),
1127 table_data->len - srat_start, 1);
1131 build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
1133 AcpiTableMcfg *mcfg;
1135 int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
1137 mcfg = acpi_data_push(table_data, len);
1138 mcfg->allocation[0].address = cpu_to_le64(info->mcfg_base);
1139 /* Only a single allocation so no need to play with segments */
1140 mcfg->allocation[0].pci_segment = cpu_to_le16(0);
1141 mcfg->allocation[0].start_bus_number = 0;
1142 mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->mcfg_size - 1);
1144 /* MCFG is used for ECAM which can be enabled or disabled by guest.
1145 * To avoid table size changes (which create migration issues),
1146 * always create the table even if there are no allocations,
1147 * but set the signature to a reserved value in this case.
1148 * ACPI spec requires OSPMs to ignore such tables.
1150 if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) {
1151 /* Reserved signature: ignored by OSPM */
1156 build_header(linker, table_data, (void *)mcfg, sig, len, 1);
1160 build_dmar_q35(GArray *table_data, GArray *linker)
1162 int dmar_start = table_data->len;
1164 AcpiTableDmar *dmar;
1165 AcpiDmarHardwareUnit *drhd;
1167 dmar = acpi_data_push(table_data, sizeof(*dmar));
1168 dmar->host_address_width = VTD_HOST_ADDRESS_WIDTH - 1;
1169 dmar->flags = 0; /* No intr_remap for now */
1171 /* DMAR Remapping Hardware Unit Definition structure */
1172 drhd = acpi_data_push(table_data, sizeof(*drhd));
1173 drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT);
1174 drhd->length = cpu_to_le16(sizeof(*drhd)); /* No device scope now */
1175 drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL;
1176 drhd->pci_segment = cpu_to_le16(0);
1177 drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR);
1179 build_header(linker, table_data, (void *)(table_data->data + dmar_start),
1180 "DMAR", table_data->len - dmar_start, 1);
1184 build_dsdt(GArray *table_data, GArray *linker, AcpiMiscInfo *misc)
1186 AcpiTableHeader *dsdt;
1188 assert(misc->dsdt_code && misc->dsdt_size);
1190 dsdt = acpi_data_push(table_data, misc->dsdt_size);
1191 memcpy(dsdt, misc->dsdt_code, misc->dsdt_size);
1193 memset(dsdt, 0, sizeof *dsdt);
1194 build_header(linker, table_data, dsdt, "DSDT",
1195 misc->dsdt_size, 1);
1198 /* Build final rsdt table */
1200 build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets)
1202 AcpiRsdtDescriptorRev1 *rsdt;
1206 rsdt_len = sizeof(*rsdt) + sizeof(uint32_t) * table_offsets->len;
1207 rsdt = acpi_data_push(table_data, rsdt_len);
1208 memcpy(rsdt->table_offset_entry, table_offsets->data,
1209 sizeof(uint32_t) * table_offsets->len);
1210 for (i = 0; i < table_offsets->len; ++i) {
1211 /* rsdt->table_offset_entry to be filled by Guest linker */
1212 bios_linker_loader_add_pointer(linker,
1213 ACPI_BUILD_TABLE_FILE,
1214 ACPI_BUILD_TABLE_FILE,
1215 table_data, &rsdt->table_offset_entry[i],
1218 build_header(linker, table_data,
1219 (void *)rsdt, "RSDT", rsdt_len, 1);
1223 build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
1225 AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
1227 bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 16,
1228 true /* fseg memory */);
1230 memcpy(&rsdp->signature, "RSD PTR ", 8);
1231 memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6);
1232 rsdp->rsdt_physical_address = cpu_to_le32(rsdt);
1233 /* Address to be filled by Guest linker */
1234 bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE,
1235 ACPI_BUILD_TABLE_FILE,
1236 rsdp_table, &rsdp->rsdt_physical_address,
1237 sizeof rsdp->rsdt_physical_address);
1239 /* Checksum to be filled by Guest linker */
1240 bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
1241 rsdp, rsdp, sizeof *rsdp, &rsdp->checksum);
1247 struct AcpiBuildState {
1248 /* Copy of table in RAM (for patching). */
1249 ram_addr_t table_ram;
1250 /* Is table patched? */
1252 PcGuestInfo *guest_info;
1254 ram_addr_t rsdp_ram;
1255 ram_addr_t linker_ram;
1258 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
1264 pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
1265 g_assert(!ambiguous);
1268 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL);
1272 mcfg->mcfg_base = qint_get_int(qobject_to_qint(o));
1275 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL);
1277 mcfg->mcfg_size = qint_get_int(qobject_to_qint(o));
1282 static bool acpi_has_iommu(void)
1285 Object *intel_iommu;
1287 intel_iommu = object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE,
1289 return intel_iommu && !ambiguous;
1293 void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
1295 GArray *table_offsets;
1296 unsigned facs, ssdt, dsdt, rsdt;
1304 GArray *tables_blob = tables->table_data;
1306 acpi_get_cpu_info(&cpu);
1307 acpi_get_pm_info(&pm);
1308 acpi_get_dsdt(&misc);
1309 acpi_get_misc_info(&misc);
1310 acpi_get_pci_info(&pci);
1312 table_offsets = g_array_new(false, true /* clear */,
1314 ACPI_BUILD_DPRINTF("init ACPI tables\n");
1316 bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE,
1317 64 /* Ensure FACS is aligned */,
1318 false /* high memory */);
1321 * FACS is pointed to by FADT.
1322 * We place it first since it's the only table that has alignment
1325 facs = tables_blob->len;
1326 build_facs(tables_blob, tables->linker, guest_info);
1328 /* DSDT is pointed to by FADT */
1329 dsdt = tables_blob->len;
1330 build_dsdt(tables_blob, tables->linker, &misc);
1332 /* Count the size of the DSDT and SSDT, we will need it for legacy
1333 * sizing of ACPI tables.
1335 aml_len += tables_blob->len - dsdt;
1337 /* ACPI tables pointed to by RSDT */
1338 acpi_add_table(table_offsets, tables_blob);
1339 build_fadt(tables_blob, tables->linker, &pm, facs, dsdt);
1341 ssdt = tables_blob->len;
1342 acpi_add_table(table_offsets, tables_blob);
1343 build_ssdt(tables_blob, tables->linker, &cpu, &pm, &misc, &pci,
1345 aml_len += tables_blob->len - ssdt;
1347 acpi_add_table(table_offsets, tables_blob);
1348 build_madt(tables_blob, tables->linker, &cpu, guest_info);
1350 if (misc.has_hpet) {
1351 acpi_add_table(table_offsets, tables_blob);
1352 build_hpet(tables_blob, tables->linker);
1355 acpi_add_table(table_offsets, tables_blob);
1356 build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog);
1358 acpi_add_table(table_offsets, tables_blob);
1359 build_tpm_ssdt(tables_blob, tables->linker);
1361 if (guest_info->numa_nodes) {
1362 acpi_add_table(table_offsets, tables_blob);
1363 build_srat(tables_blob, tables->linker, guest_info);
1365 if (acpi_get_mcfg(&mcfg)) {
1366 acpi_add_table(table_offsets, tables_blob);
1367 build_mcfg_q35(tables_blob, tables->linker, &mcfg);
1369 if (acpi_has_iommu()) {
1370 acpi_add_table(table_offsets, tables_blob);
1371 build_dmar_q35(tables_blob, tables->linker);
1374 /* Add tables supplied by user (if any) */
1375 for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
1376 unsigned len = acpi_table_len(u);
1378 acpi_add_table(table_offsets, tables_blob);
1379 g_array_append_vals(tables_blob, u, len);
1382 /* RSDT is pointed to by RSDP */
1383 rsdt = tables_blob->len;
1384 build_rsdt(tables_blob, tables->linker, table_offsets);
1386 /* RSDP is in FSEG memory, so allocate it separately */
1387 build_rsdp(tables->rsdp, tables->linker, rsdt);
1389 /* We'll expose it all to Guest so we want to reduce
1390 * chance of size changes.
1392 * We used to align the tables to 4k, but of course this would
1393 * too simple to be enough. 4k turned out to be too small an
1394 * alignment very soon, and in fact it is almost impossible to
1395 * keep the table size stable for all (max_cpus, max_memory_slots)
1396 * combinations. So the table size is always 64k for pc-i440fx-2.1
1397 * and we give an error if the table grows beyond that limit.
1399 * We still have the problem of migrating from "-M pc-i440fx-2.0". For
1400 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables
1401 * than 2.0 and we can always pad the smaller tables with zeros. We can
1402 * then use the exact size of the 2.0 tables.
1404 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration.
1406 if (guest_info->legacy_acpi_table_size) {
1407 /* Subtracting aml_len gives the size of fixed tables. Then add the
1408 * size of the PIIX4 DSDT/SSDT in QEMU 2.0.
1410 int legacy_aml_len =
1411 guest_info->legacy_acpi_table_size +
1412 ACPI_BUILD_LEGACY_CPU_AML_SIZE * max_cpus;
1413 int legacy_table_size =
1414 ROUND_UP(tables_blob->len - aml_len + legacy_aml_len,
1415 ACPI_BUILD_ALIGN_SIZE);
1416 if (tables_blob->len > legacy_table_size) {
1417 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */
1418 error_report("Warning: migration may not work.");
1420 g_array_set_size(tables_blob, legacy_table_size);
1422 /* Make sure we have a buffer in case we need to resize the tables. */
1423 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) {
1424 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */
1425 error_report("Warning: ACPI tables are larger than 64k.");
1426 error_report("Warning: migration may not work.");
1427 error_report("Warning: please remove CPUs, NUMA nodes, "
1428 "memory slots or PCI bridges.");
1430 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE);
1433 acpi_align_size(tables->linker, ACPI_BUILD_ALIGN_SIZE);
1435 /* Cleanup memory that's no longer used. */
1436 g_array_free(table_offsets, true);
1439 static void acpi_ram_update(ram_addr_t ram, GArray *data)
1441 uint32_t size = acpi_data_len(data);
1443 /* Make sure RAM size is correct - in case it got changed e.g. by migration */
1444 qemu_ram_resize(ram, size, &error_abort);
1446 memcpy(qemu_get_ram_ptr(ram), data->data, size);
1447 cpu_physical_memory_set_dirty_range_nocode(ram, size);
1450 static void acpi_build_update(void *build_opaque, uint32_t offset)
1452 AcpiBuildState *build_state = build_opaque;
1453 AcpiBuildTables tables;
1455 /* No state to update or already patched? Nothing to do. */
1456 if (!build_state || build_state->patched) {
1459 build_state->patched = 1;
1461 acpi_build_tables_init(&tables);
1463 acpi_build(build_state->guest_info, &tables);
1465 acpi_ram_update(build_state->table_ram, tables.table_data);
1467 if (build_state->rsdp) {
1468 memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp));
1470 acpi_ram_update(build_state->rsdp_ram, tables.rsdp);
1473 acpi_ram_update(build_state->linker_ram, tables.linker);
1474 acpi_build_tables_cleanup(&tables, true);
1477 static void acpi_build_reset(void *build_opaque)
1479 AcpiBuildState *build_state = build_opaque;
1480 build_state->patched = 0;
1483 static ram_addr_t acpi_add_rom_blob(AcpiBuildState *build_state, GArray *blob,
1484 const char *name, uint64_t max_size)
1486 return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
1487 name, acpi_build_update, build_state);
1490 static const VMStateDescription vmstate_acpi_build = {
1491 .name = "acpi_build",
1493 .minimum_version_id = 1,
1494 .fields = (VMStateField[]) {
1495 VMSTATE_UINT8(patched, AcpiBuildState),
1496 VMSTATE_END_OF_LIST()
1500 void acpi_setup(PcGuestInfo *guest_info)
1502 AcpiBuildTables tables;
1503 AcpiBuildState *build_state;
1505 if (!guest_info->fw_cfg) {
1506 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n");
1510 if (!guest_info->has_acpi_build) {
1511 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n");
1515 if (!acpi_enabled) {
1516 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n");
1520 build_state = g_malloc0(sizeof *build_state);
1522 build_state->guest_info = guest_info;
1524 acpi_set_pci_info();
1526 acpi_build_tables_init(&tables);
1527 acpi_build(build_state->guest_info, &tables);
1529 /* Now expose it all to Guest */
1530 build_state->table_ram = acpi_add_rom_blob(build_state, tables.table_data,
1531 ACPI_BUILD_TABLE_FILE,
1532 ACPI_BUILD_TABLE_MAX_SIZE);
1533 assert(build_state->table_ram != RAM_ADDR_MAX);
1535 build_state->linker_ram =
1536 acpi_add_rom_blob(build_state, tables.linker, "etc/table-loader", 0);
1538 fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
1539 tables.tcpalog->data, acpi_data_len(tables.tcpalog));
1541 if (!guest_info->rsdp_in_ram) {
1543 * Keep for compatibility with old machine types.
1544 * Though RSDP is small, its contents isn't immutable, so
1545 * we'll update it along with the rest of tables on guest access.
1547 uint32_t rsdp_size = acpi_data_len(tables.rsdp);
1549 build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size);
1550 fw_cfg_add_file_callback(guest_info->fw_cfg, ACPI_BUILD_RSDP_FILE,
1551 acpi_build_update, build_state,
1552 build_state->rsdp, rsdp_size);
1553 build_state->rsdp_ram = (ram_addr_t)-1;
1555 build_state->rsdp = NULL;
1556 build_state->rsdp_ram = acpi_add_rom_blob(build_state, tables.rsdp,
1557 ACPI_BUILD_RSDP_FILE, 0);
1560 qemu_register_reset(acpi_build_reset, build_state);
1561 acpi_build_reset(build_state);
1562 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state);
1564 /* Cleanup tables but don't free the memory: we track it
1567 acpi_build_tables_cleanup(&tables, false);