1 /* Support for generating ACPI tables and passing them to Guests
2 *
3 * ARM virt ACPI generation
4 *
5 * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
6 * Copyright (C) 2006 Fabrice Bellard
7 * Copyright (C) 2013 Red Hat Inc
8 *
9 * Author: Michael S. Tsirkin <mst@redhat.com>
10 *
11 * Copyright (c) 2015 HUAWEI TECHNOLOGIES CO.,LTD.
12 *
13 * Author: Shannon Zhao <zhaoshenglong@huawei.com>
14 *
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24
25 * You should have received a copy of the GNU General Public License along
26 * with this program; if not, see <http://www.gnu.org/licenses/>.
27 */
28
29 #include "qemu/osdep.h"
30 #include "qapi/error.h"
31 #include "qemu/bitmap.h"
32 #include "qemu/error-report.h"
33 #include "trace.h"
34 #include "hw/core/cpu.h"
35 #include "hw/acpi/acpi-defs.h"
36 #include "hw/acpi/acpi.h"
37 #include "hw/nvram/fw_cfg_acpi.h"
38 #include "hw/acpi/bios-linker-loader.h"
39 #include "hw/acpi/aml-build.h"
40 #include "hw/acpi/utils.h"
41 #include "hw/acpi/pci.h"
42 #include "hw/acpi/memory_hotplug.h"
43 #include "hw/acpi/generic_event_device.h"
44 #include "hw/acpi/tpm.h"
45 #include "hw/acpi/hmat.h"
46 #include "hw/pci/pcie_host.h"
47 #include "hw/pci/pci.h"
48 #include "hw/pci/pci_bus.h"
49 #include "hw/pci-host/gpex.h"
50 #include "hw/arm/virt.h"
51 #include "hw/intc/arm_gicv3_its_common.h"
52 #include "hw/mem/nvdimm.h"
53 #include "hw/platform-bus.h"
54 #include "system/numa.h"
55 #include "system/reset.h"
56 #include "system/tpm.h"
57 #include "migration/vmstate.h"
58 #include "hw/acpi/ghes.h"
59 #include "hw/acpi/viot.h"
60 #include "hw/virtio/virtio-acpi.h"
61 #include "target/arm/multiprocessing.h"
62
63 #define ARM_SPI_BASE 32
64
65 #define ACPI_BUILD_TABLE_SIZE 0x20000
66
acpi_dsdt_add_cpus(Aml * scope,VirtMachineState * vms)67 static void acpi_dsdt_add_cpus(Aml *scope, VirtMachineState *vms)
68 {
69 MachineState *ms = MACHINE(vms);
70 uint16_t i;
71
72 for (i = 0; i < ms->smp.cpus; i++) {
73 Aml *dev = aml_device("C%.03X", i);
74 aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
75 aml_append(dev, aml_name_decl("_UID", aml_int(i)));
76 aml_append(scope, dev);
77 }
78 }
79
acpi_dsdt_add_uart(Aml * scope,const MemMapEntry * uart_memmap,uint32_t uart_irq,int uartidx)80 static void acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap,
81 uint32_t uart_irq, int uartidx)
82 {
83 Aml *dev = aml_device("COM%d", uartidx);
84 aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0011")));
85 aml_append(dev, aml_name_decl("_UID", aml_int(uartidx)));
86
87 Aml *crs = aml_resource_template();
88 aml_append(crs, aml_memory32_fixed(uart_memmap->base,
89 uart_memmap->size, AML_READ_WRITE));
90 aml_append(crs,
91 aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
92 AML_EXCLUSIVE, &uart_irq, 1));
93 aml_append(dev, aml_name_decl("_CRS", crs));
94
95 aml_append(scope, dev);
96 }
97
acpi_dsdt_add_flash(Aml * scope,const MemMapEntry * flash_memmap)98 static void acpi_dsdt_add_flash(Aml *scope, const MemMapEntry *flash_memmap)
99 {
100 Aml *dev, *crs;
101 hwaddr base = flash_memmap->base;
102 hwaddr size = flash_memmap->size / 2;
103
104 dev = aml_device("FLS0");
105 aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
106 aml_append(dev, aml_name_decl("_UID", aml_int(0)));
107
108 crs = aml_resource_template();
109 aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
110 aml_append(dev, aml_name_decl("_CRS", crs));
111 aml_append(scope, dev);
112
113 dev = aml_device("FLS1");
114 aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
115 aml_append(dev, aml_name_decl("_UID", aml_int(1)));
116 crs = aml_resource_template();
117 aml_append(crs, aml_memory32_fixed(base + size, size, AML_READ_WRITE));
118 aml_append(dev, aml_name_decl("_CRS", crs));
119 aml_append(scope, dev);
120 }
121
acpi_dsdt_add_pci(Aml * scope,const MemMapEntry * memmap,uint32_t irq,VirtMachineState * vms)122 static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
123 uint32_t irq, VirtMachineState *vms)
124 {
125 int ecam_id = VIRT_ECAM_ID(vms->highmem_ecam);
126 struct GPEXConfig cfg = {
127 .mmio32 = memmap[VIRT_PCIE_MMIO],
128 .pio = memmap[VIRT_PCIE_PIO],
129 .ecam = memmap[ecam_id],
130 .irq = irq,
131 .bus = vms->bus,
132 };
133
134 if (vms->highmem_mmio) {
135 cfg.mmio64 = memmap[VIRT_HIGH_PCIE_MMIO];
136 }
137
138 acpi_dsdt_add_gpex(scope, &cfg);
139 }
140
acpi_dsdt_add_gpio(Aml * scope,const MemMapEntry * gpio_memmap,uint32_t gpio_irq)141 static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
142 uint32_t gpio_irq)
143 {
144 Aml *dev = aml_device("GPO0");
145 aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061")));
146 aml_append(dev, aml_name_decl("_UID", aml_int(0)));
147
148 Aml *crs = aml_resource_template();
149 aml_append(crs, aml_memory32_fixed(gpio_memmap->base, gpio_memmap->size,
150 AML_READ_WRITE));
151 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
152 AML_EXCLUSIVE, &gpio_irq, 1));
153 aml_append(dev, aml_name_decl("_CRS", crs));
154
155 Aml *aei = aml_resource_template();
156
157 const uint32_t pin = GPIO_PIN_POWER_BUTTON;
158 aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH,
159 AML_EXCLUSIVE, AML_PULL_UP, 0, &pin, 1,
160 "GPO0", NULL, 0));
161 aml_append(dev, aml_name_decl("_AEI", aei));
162
163 /* _E03 is handle for power button */
164 Aml *method = aml_method("_E03", 0, AML_NOTSERIALIZED);
165 aml_append(method, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE),
166 aml_int(0x80)));
167 aml_append(dev, method);
168 aml_append(scope, dev);
169 }
170
171 #ifdef CONFIG_TPM
acpi_dsdt_add_tpm(Aml * scope,VirtMachineState * vms)172 static void acpi_dsdt_add_tpm(Aml *scope, VirtMachineState *vms)
173 {
174 PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(vms->platform_bus_dev);
175 hwaddr pbus_base = vms->memmap[VIRT_PLATFORM_BUS].base;
176 SysBusDevice *sbdev = SYS_BUS_DEVICE(tpm_find());
177 MemoryRegion *sbdev_mr;
178 hwaddr tpm_base;
179
180 if (!sbdev) {
181 return;
182 }
183
184 tpm_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
185 assert(tpm_base != -1);
186
187 tpm_base += pbus_base;
188
189 sbdev_mr = sysbus_mmio_get_region(sbdev, 0);
190
191 Aml *dev = aml_device("TPM0");
192 aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101")));
193 aml_append(dev, aml_name_decl("_STR", aml_string("TPM 2.0 Device")));
194 aml_append(dev, aml_name_decl("_UID", aml_int(0)));
195
196 Aml *crs = aml_resource_template();
197 aml_append(crs,
198 aml_memory32_fixed(tpm_base,
199 (uint32_t)memory_region_size(sbdev_mr),
200 AML_READ_WRITE));
201 aml_append(dev, aml_name_decl("_CRS", crs));
202 aml_append(scope, dev);
203 }
204 #endif
205
206 #define ID_MAPPING_ENTRY_SIZE 20
207 #define SMMU_V3_ENTRY_SIZE 68
208 #define ROOT_COMPLEX_ENTRY_SIZE 36
209 #define IORT_NODE_OFFSET 48
210
211 /*
212 * Append an ID mapping entry as described by "Table 4 ID mapping format" in
213 * "IO Remapping Table System Software on ARM Platforms", Chapter 3.
214 * Document number: ARM DEN 0049E.f, Apr 2024
215 *
216 * Note that @id_count gets internally subtracted by one, following the spec.
217 */
build_iort_id_mapping(GArray * table_data,uint32_t input_base,uint32_t id_count,uint32_t out_ref)218 static void build_iort_id_mapping(GArray *table_data, uint32_t input_base,
219 uint32_t id_count, uint32_t out_ref)
220 {
221 build_append_int_noprefix(table_data, input_base, 4); /* Input base */
222 /* Number of IDs - The number of IDs in the range minus one */
223 build_append_int_noprefix(table_data, id_count - 1, 4);
224 build_append_int_noprefix(table_data, input_base, 4); /* Output base */
225 build_append_int_noprefix(table_data, out_ref, 4); /* Output Reference */
226 /* Flags */
227 build_append_int_noprefix(table_data, 0 /* Single mapping (disabled) */, 4);
228 }
229
230 struct AcpiIortIdMapping {
231 uint32_t input_base;
232 uint32_t id_count;
233 };
234 typedef struct AcpiIortIdMapping AcpiIortIdMapping;
235
236 /* Build the iort ID mapping to SMMUv3 for a given PCI host bridge */
237 static int
iort_host_bridges(Object * obj,void * opaque)238 iort_host_bridges(Object *obj, void *opaque)
239 {
240 GArray *idmap_blob = opaque;
241
242 if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) {
243 PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus;
244
245 if (bus && !pci_bus_bypass_iommu(bus)) {
246 int min_bus, max_bus;
247
248 pci_bus_range(bus, &min_bus, &max_bus);
249
250 AcpiIortIdMapping idmap = {
251 .input_base = min_bus << 8,
252 .id_count = (max_bus - min_bus + 1) << 8,
253 };
254 g_array_append_val(idmap_blob, idmap);
255 }
256 }
257
258 return 0;
259 }
260
iort_idmap_compare(gconstpointer a,gconstpointer b)261 static int iort_idmap_compare(gconstpointer a, gconstpointer b)
262 {
263 AcpiIortIdMapping *idmap_a = (AcpiIortIdMapping *)a;
264 AcpiIortIdMapping *idmap_b = (AcpiIortIdMapping *)b;
265
266 return idmap_a->input_base - idmap_b->input_base;
267 }
268
269 /*
270 * Input Output Remapping Table (IORT)
271 * Conforms to "IO Remapping Table System Software on ARM Platforms",
272 * Document number: ARM DEN 0049E.b, Feb 2021
273 */
274 static void
build_iort(GArray * table_data,BIOSLinker * linker,VirtMachineState * vms)275 build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
276 {
277 int i, nb_nodes, rc_mapping_count;
278 size_t node_size, smmu_offset = 0;
279 AcpiIortIdMapping *idmap;
280 uint32_t id = 0;
281 GArray *smmu_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping));
282 GArray *its_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping));
283
284 AcpiTable table = { .sig = "IORT", .rev = 3, .oem_id = vms->oem_id,
285 .oem_table_id = vms->oem_table_id };
286 /* Table 2 The IORT */
287 acpi_table_begin(&table, table_data);
288
289 if (vms->iommu == VIRT_IOMMU_SMMUV3) {
290 AcpiIortIdMapping next_range = {0};
291
292 object_child_foreach_recursive(object_get_root(),
293 iort_host_bridges, smmu_idmaps);
294
295 /* Sort the smmu idmap by input_base */
296 g_array_sort(smmu_idmaps, iort_idmap_compare);
297
298 /*
299 * Split the whole RIDs by mapping from RC to SMMU,
300 * build the ID mapping from RC to ITS directly.
301 */
302 for (i = 0; i < smmu_idmaps->len; i++) {
303 idmap = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i);
304
305 if (next_range.input_base < idmap->input_base) {
306 next_range.id_count = idmap->input_base - next_range.input_base;
307 g_array_append_val(its_idmaps, next_range);
308 }
309
310 next_range.input_base = idmap->input_base + idmap->id_count;
311 }
312
313 /* Append the last RC -> ITS ID mapping */
314 if (next_range.input_base < 0x10000) {
315 next_range.id_count = 0x10000 - next_range.input_base;
316 g_array_append_val(its_idmaps, next_range);
317 }
318
319 nb_nodes = 3; /* RC, ITS, SMMUv3 */
320 rc_mapping_count = smmu_idmaps->len + its_idmaps->len;
321 } else {
322 nb_nodes = 2; /* RC, ITS */
323 rc_mapping_count = 1;
324 }
325 /* Number of IORT Nodes */
326 build_append_int_noprefix(table_data, nb_nodes, 4);
327
328 /* Offset to Array of IORT Nodes */
329 build_append_int_noprefix(table_data, IORT_NODE_OFFSET, 4);
330 build_append_int_noprefix(table_data, 0, 4); /* Reserved */
331
332 /* Table 12 ITS Group Format */
333 build_append_int_noprefix(table_data, 0 /* ITS Group */, 1); /* Type */
334 node_size = 20 /* fixed header size */ + 4 /* 1 GIC ITS Identifier */;
335 build_append_int_noprefix(table_data, node_size, 2); /* Length */
336 build_append_int_noprefix(table_data, 1, 1); /* Revision */
337 build_append_int_noprefix(table_data, id++, 4); /* Identifier */
338 build_append_int_noprefix(table_data, 0, 4); /* Number of ID mappings */
339 build_append_int_noprefix(table_data, 0, 4); /* Reference to ID Array */
340 build_append_int_noprefix(table_data, 1, 4); /* Number of ITSs */
341 /* GIC ITS Identifier Array */
342 build_append_int_noprefix(table_data, 0 /* MADT translation_id */, 4);
343
344 if (vms->iommu == VIRT_IOMMU_SMMUV3) {
345 int irq = vms->irqmap[VIRT_SMMU] + ARM_SPI_BASE;
346
347 smmu_offset = table_data->len - table.table_offset;
348 /* Table 9 SMMUv3 Format */
349 build_append_int_noprefix(table_data, 4 /* SMMUv3 */, 1); /* Type */
350 node_size = SMMU_V3_ENTRY_SIZE + ID_MAPPING_ENTRY_SIZE;
351 build_append_int_noprefix(table_data, node_size, 2); /* Length */
352 build_append_int_noprefix(table_data, 4, 1); /* Revision */
353 build_append_int_noprefix(table_data, id++, 4); /* Identifier */
354 build_append_int_noprefix(table_data, 1, 4); /* Number of ID mappings */
355 /* Reference to ID Array */
356 build_append_int_noprefix(table_data, SMMU_V3_ENTRY_SIZE, 4);
357 /* Base address */
358 build_append_int_noprefix(table_data, vms->memmap[VIRT_SMMU].base, 8);
359 /* Flags */
360 build_append_int_noprefix(table_data, 1 /* COHACC Override */, 4);
361 build_append_int_noprefix(table_data, 0, 4); /* Reserved */
362 build_append_int_noprefix(table_data, 0, 8); /* VATOS address */
363 /* Model */
364 build_append_int_noprefix(table_data, 0 /* Generic SMMU-v3 */, 4);
365 build_append_int_noprefix(table_data, irq, 4); /* Event */
366 build_append_int_noprefix(table_data, irq + 1, 4); /* PRI */
367 build_append_int_noprefix(table_data, irq + 3, 4); /* GERR */
368 build_append_int_noprefix(table_data, irq + 2, 4); /* Sync */
369 build_append_int_noprefix(table_data, 0, 4); /* Proximity domain */
370 /* DeviceID mapping index (ignored since interrupts are GSIV based) */
371 build_append_int_noprefix(table_data, 0, 4);
372
373 /* output IORT node is the ITS group node (the first node) */
374 build_iort_id_mapping(table_data, 0, 0x10000, IORT_NODE_OFFSET);
375 }
376
377 /* Table 17 Root Complex Node */
378 build_append_int_noprefix(table_data, 2 /* Root complex */, 1); /* Type */
379 node_size = ROOT_COMPLEX_ENTRY_SIZE +
380 ID_MAPPING_ENTRY_SIZE * rc_mapping_count;
381 build_append_int_noprefix(table_data, node_size, 2); /* Length */
382 build_append_int_noprefix(table_data, 3, 1); /* Revision */
383 build_append_int_noprefix(table_data, id++, 4); /* Identifier */
384 /* Number of ID mappings */
385 build_append_int_noprefix(table_data, rc_mapping_count, 4);
386 /* Reference to ID Array */
387 build_append_int_noprefix(table_data, ROOT_COMPLEX_ENTRY_SIZE, 4);
388
389 /* Table 14 Memory access properties */
390 /* CCA: Cache Coherent Attribute */
391 build_append_int_noprefix(table_data, 1 /* fully coherent */, 4);
392 build_append_int_noprefix(table_data, 0, 1); /* AH: Note Allocation Hints */
393 build_append_int_noprefix(table_data, 0, 2); /* Reserved */
394 /* Table 15 Memory Access Flags */
395 build_append_int_noprefix(table_data, 0x3 /* CCA = CPM = DACS = 1 */, 1);
396
397 build_append_int_noprefix(table_data, 0, 4); /* ATS Attribute */
398 /* MCFG pci_segment */
399 build_append_int_noprefix(table_data, 0, 4); /* PCI Segment number */
400
401 /* Memory address size limit */
402 build_append_int_noprefix(table_data, 64, 1);
403
404 build_append_int_noprefix(table_data, 0, 3); /* Reserved */
405
406 /* Output Reference */
407 if (vms->iommu == VIRT_IOMMU_SMMUV3) {
408 AcpiIortIdMapping *range;
409
410 /* translated RIDs connect to SMMUv3 node: RC -> SMMUv3 -> ITS */
411 for (i = 0; i < smmu_idmaps->len; i++) {
412 range = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i);
413 /* output IORT node is the smmuv3 node */
414 build_iort_id_mapping(table_data, range->input_base,
415 range->id_count, smmu_offset);
416 }
417
418 /* bypassed RIDs connect to ITS group node directly: RC -> ITS */
419 for (i = 0; i < its_idmaps->len; i++) {
420 range = &g_array_index(its_idmaps, AcpiIortIdMapping, i);
421 /* output IORT node is the ITS group node (the first node) */
422 build_iort_id_mapping(table_data, range->input_base,
423 range->id_count, IORT_NODE_OFFSET);
424 }
425 } else {
426 /* output IORT node is the ITS group node (the first node) */
427 build_iort_id_mapping(table_data, 0, 0x10000, IORT_NODE_OFFSET);
428 }
429
430 acpi_table_end(linker, &table);
431 g_array_free(smmu_idmaps, true);
432 g_array_free(its_idmaps, true);
433 }
434
435 /*
436 * Serial Port Console Redirection Table (SPCR)
437 * Rev: 1.07
438 */
439 static void
spcr_setup(GArray * table_data,BIOSLinker * linker,VirtMachineState * vms)440 spcr_setup(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
441 {
442 AcpiSpcrData serial = {
443 .interface_type = 3, /* ARM PL011 UART */
444 .base_addr.id = AML_AS_SYSTEM_MEMORY,
445 .base_addr.width = 32,
446 .base_addr.offset = 0,
447 .base_addr.size = 3,
448 .base_addr.addr = vms->memmap[VIRT_UART0].base,
449 .interrupt_type = (1 << 3),/* Bit[3] ARMH GIC interrupt*/
450 .pc_interrupt = 0, /* IRQ */
451 .interrupt = (vms->irqmap[VIRT_UART0] + ARM_SPI_BASE),
452 .baud_rate = 3, /* 9600 */
453 .parity = 0, /* No Parity */
454 .stop_bits = 1, /* 1 Stop bit */
455 .flow_control = 1 << 1, /* RTS/CTS hardware flow control */
456 .terminal_type = 0, /* VT100 */
457 .language = 0, /* Language */
458 .pci_device_id = 0xffff, /* not a PCI device*/
459 .pci_vendor_id = 0xffff, /* not a PCI device*/
460 .pci_bus = 0,
461 .pci_device = 0,
462 .pci_function = 0,
463 .pci_flags = 0,
464 .pci_segment = 0,
465 };
466 /*
467 * Passing NULL as the SPCR Table for Revision 2 doesn't support
468 * NameSpaceString.
469 */
470 build_spcr(table_data, linker, &serial, 2, vms->oem_id, vms->oem_table_id,
471 NULL);
472 }
473
474 /*
475 * ACPI spec, Revision 5.1
476 * 5.2.16 System Resource Affinity Table (SRAT)
477 */
478 static void
build_srat(GArray * table_data,BIOSLinker * linker,VirtMachineState * vms)479 build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
480 {
481 int i;
482 uint64_t mem_base;
483 MachineClass *mc = MACHINE_GET_CLASS(vms);
484 MachineState *ms = MACHINE(vms);
485 const CPUArchIdList *cpu_list = mc->possible_cpu_arch_ids(ms);
486 AcpiTable table = { .sig = "SRAT", .rev = 3, .oem_id = vms->oem_id,
487 .oem_table_id = vms->oem_table_id };
488
489 acpi_table_begin(&table, table_data);
490 build_append_int_noprefix(table_data, 1, 4); /* Reserved */
491 build_append_int_noprefix(table_data, 0, 8); /* Reserved */
492
493 for (i = 0; i < cpu_list->len; ++i) {
494 uint32_t nodeid = cpu_list->cpus[i].props.node_id;
495 /*
496 * 5.2.16.4 GICC Affinity Structure
497 */
498 build_append_int_noprefix(table_data, 3, 1); /* Type */
499 build_append_int_noprefix(table_data, 18, 1); /* Length */
500 build_append_int_noprefix(table_data, nodeid, 4); /* Proximity Domain */
501 build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */
502 /* Flags, Table 5-76 */
503 build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
504 build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
505 }
506
507 mem_base = vms->memmap[VIRT_MEM].base;
508 for (i = 0; i < ms->numa_state->num_nodes; ++i) {
509 if (ms->numa_state->nodes[i].node_mem > 0) {
510 build_srat_memory(table_data, mem_base,
511 ms->numa_state->nodes[i].node_mem, i,
512 MEM_AFFINITY_ENABLED);
513 mem_base += ms->numa_state->nodes[i].node_mem;
514 }
515 }
516
517 build_srat_generic_affinity_structures(table_data);
518
519 if (ms->nvdimms_state->is_enabled) {
520 nvdimm_build_srat(table_data);
521 }
522
523 if (ms->device_memory) {
524 build_srat_memory(table_data, ms->device_memory->base,
525 memory_region_size(&ms->device_memory->mr),
526 ms->numa_state->num_nodes - 1,
527 MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
528 }
529
530 acpi_table_end(linker, &table);
531 }
532
533 /*
534 * ACPI spec, Revision 6.5
535 * 5.2.25 Generic Timer Description Table (GTDT)
536 */
537 static void
build_gtdt(GArray * table_data,BIOSLinker * linker,VirtMachineState * vms)538 build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
539 {
540 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
541 /*
542 * Table 5-117 Flag Definitions
543 * set only "Timer interrupt Mode" and assume "Timer Interrupt
544 * polarity" bit as '0: Interrupt is Active high'
545 */
546 uint32_t irqflags = vmc->claim_edge_triggered_timers ?
547 1 : /* Interrupt is Edge triggered */
548 0; /* Interrupt is Level triggered */
549 AcpiTable table = { .sig = "GTDT", .rev = 3, .oem_id = vms->oem_id,
550 .oem_table_id = vms->oem_table_id };
551
552 acpi_table_begin(&table, table_data);
553
554 /* CntControlBase Physical Address */
555 build_append_int_noprefix(table_data, 0xFFFFFFFFFFFFFFFF, 8);
556 build_append_int_noprefix(table_data, 0, 4); /* Reserved */
557 /*
558 * FIXME: clarify comment:
559 * The interrupt values are the same with the device tree when adding 16
560 */
561 /* Secure EL1 timer GSIV */
562 build_append_int_noprefix(table_data, ARCH_TIMER_S_EL1_IRQ, 4);
563 /* Secure EL1 timer Flags */
564 build_append_int_noprefix(table_data, irqflags, 4);
565 /* Non-Secure EL1 timer GSIV */
566 build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL1_IRQ, 4);
567 /* Non-Secure EL1 timer Flags */
568 build_append_int_noprefix(table_data, irqflags |
569 1UL << 2, /* Always-on Capability */
570 4);
571 /* Virtual timer GSIV */
572 build_append_int_noprefix(table_data, ARCH_TIMER_VIRT_IRQ, 4);
573 /* Virtual Timer Flags */
574 build_append_int_noprefix(table_data, irqflags, 4);
575 /* Non-Secure EL2 timer GSIV */
576 build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL2_IRQ, 4);
577 /* Non-Secure EL2 timer Flags */
578 build_append_int_noprefix(table_data, irqflags, 4);
579 /* CntReadBase Physical address */
580 build_append_int_noprefix(table_data, 0xFFFFFFFFFFFFFFFF, 8);
581 /* Platform Timer Count */
582 build_append_int_noprefix(table_data, 0, 4);
583 /* Platform Timer Offset */
584 build_append_int_noprefix(table_data, 0, 4);
585 if (vms->ns_el2_virt_timer_irq) {
586 /* Virtual EL2 Timer GSIV */
587 build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL2_VIRT_IRQ, 4);
588 /* Virtual EL2 Timer Flags */
589 build_append_int_noprefix(table_data, irqflags, 4);
590 } else {
591 build_append_int_noprefix(table_data, 0, 4);
592 build_append_int_noprefix(table_data, 0, 4);
593 }
594 acpi_table_end(linker, &table);
595 }
596
597 /* Debug Port Table 2 (DBG2) */
598 static void
build_dbg2(GArray * table_data,BIOSLinker * linker,VirtMachineState * vms)599 build_dbg2(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
600 {
601 AcpiTable table = { .sig = "DBG2", .rev = 0, .oem_id = vms->oem_id,
602 .oem_table_id = vms->oem_table_id };
603 int dbg2devicelength;
604 const char name[] = "COM0";
605 const int namespace_length = sizeof(name);
606
607 acpi_table_begin(&table, table_data);
608
609 dbg2devicelength = 22 + /* BaseAddressRegister[] offset */
610 12 + /* BaseAddressRegister[] */
611 4 + /* AddressSize[] */
612 namespace_length /* NamespaceString[] */;
613
614 /* OffsetDbgDeviceInfo */
615 build_append_int_noprefix(table_data, 44, 4);
616 /* NumberDbgDeviceInfo */
617 build_append_int_noprefix(table_data, 1, 4);
618
619 /* Table 2. Debug Device Information structure format */
620 build_append_int_noprefix(table_data, 0, 1); /* Revision */
621 build_append_int_noprefix(table_data, dbg2devicelength, 2); /* Length */
622 /* NumberofGenericAddressRegisters */
623 build_append_int_noprefix(table_data, 1, 1);
624 /* NameSpaceStringLength */
625 build_append_int_noprefix(table_data, namespace_length, 2);
626 build_append_int_noprefix(table_data, 38, 2); /* NameSpaceStringOffset */
627 build_append_int_noprefix(table_data, 0, 2); /* OemDataLength */
628 /* OemDataOffset (0 means no OEM data) */
629 build_append_int_noprefix(table_data, 0, 2);
630
631 /* Port Type */
632 build_append_int_noprefix(table_data, 0x8000 /* Serial */, 2);
633 /* Port Subtype */
634 build_append_int_noprefix(table_data, 0x3 /* ARM PL011 UART */, 2);
635 build_append_int_noprefix(table_data, 0, 2); /* Reserved */
636 /* BaseAddressRegisterOffset */
637 build_append_int_noprefix(table_data, 22, 2);
638 /* AddressSizeOffset */
639 build_append_int_noprefix(table_data, 34, 2);
640
641 /* BaseAddressRegister[] */
642 build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 32, 0, 3,
643 vms->memmap[VIRT_UART0].base);
644
645 /* AddressSize[] */
646 build_append_int_noprefix(table_data,
647 vms->memmap[VIRT_UART0].size, 4);
648
649 /* NamespaceString[] */
650 g_array_append_vals(table_data, name, namespace_length);
651
652 acpi_table_end(linker, &table);
653 };
654
655 /*
656 * ACPI spec, Revision 6.0 Errata A
657 * 5.2.12 Multiple APIC Description Table (MADT)
658 */
build_append_gicr(GArray * table_data,uint64_t base,uint32_t size)659 static void build_append_gicr(GArray *table_data, uint64_t base, uint32_t size)
660 {
661 build_append_int_noprefix(table_data, 0xE, 1); /* Type */
662 build_append_int_noprefix(table_data, 16, 1); /* Length */
663 build_append_int_noprefix(table_data, 0, 2); /* Reserved */
664 /* Discovery Range Base Address */
665 build_append_int_noprefix(table_data, base, 8);
666 build_append_int_noprefix(table_data, size, 4); /* Discovery Range Length */
667 }
668
669 static void
build_madt(GArray * table_data,BIOSLinker * linker,VirtMachineState * vms)670 build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
671 {
672 int i;
673 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
674 const MemMapEntry *memmap = vms->memmap;
675 AcpiTable table = { .sig = "APIC", .rev = 4, .oem_id = vms->oem_id,
676 .oem_table_id = vms->oem_table_id };
677
678 acpi_table_begin(&table, table_data);
679 /* Local Interrupt Controller Address */
680 build_append_int_noprefix(table_data, 0, 4);
681 build_append_int_noprefix(table_data, 0, 4); /* Flags */
682
683 /* 5.2.12.15 GIC Distributor Structure */
684 build_append_int_noprefix(table_data, 0xC, 1); /* Type */
685 build_append_int_noprefix(table_data, 24, 1); /* Length */
686 build_append_int_noprefix(table_data, 0, 2); /* Reserved */
687 build_append_int_noprefix(table_data, 0, 4); /* GIC ID */
688 /* Physical Base Address */
689 build_append_int_noprefix(table_data, memmap[VIRT_GIC_DIST].base, 8);
690 build_append_int_noprefix(table_data, 0, 4); /* System Vector Base */
691 /* GIC version */
692 build_append_int_noprefix(table_data, vms->gic_version, 1);
693 build_append_int_noprefix(table_data, 0, 3); /* Reserved */
694
695 for (i = 0; i < MACHINE(vms)->smp.cpus; i++) {
696 ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(i));
697 uint64_t physical_base_address = 0, gich = 0, gicv = 0;
698 uint32_t vgic_interrupt = vms->virt ? ARCH_GIC_MAINT_IRQ : 0;
699 uint32_t pmu_interrupt = arm_feature(&armcpu->env, ARM_FEATURE_PMU) ?
700 VIRTUAL_PMU_IRQ : 0;
701
702 if (vms->gic_version == VIRT_GIC_VERSION_2) {
703 physical_base_address = memmap[VIRT_GIC_CPU].base;
704 gicv = memmap[VIRT_GIC_VCPU].base;
705 gich = memmap[VIRT_GIC_HYP].base;
706 }
707
708 /* 5.2.12.14 GIC Structure */
709 build_append_int_noprefix(table_data, 0xB, 1); /* Type */
710 build_append_int_noprefix(table_data, 80, 1); /* Length */
711 build_append_int_noprefix(table_data, 0, 2); /* Reserved */
712 build_append_int_noprefix(table_data, i, 4); /* GIC ID */
713 build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */
714 /* Flags */
715 build_append_int_noprefix(table_data, 1, 4); /* Enabled */
716 /* Parking Protocol Version */
717 build_append_int_noprefix(table_data, 0, 4);
718 /* Performance Interrupt GSIV */
719 build_append_int_noprefix(table_data, pmu_interrupt, 4);
720 build_append_int_noprefix(table_data, 0, 8); /* Parked Address */
721 /* Physical Base Address */
722 build_append_int_noprefix(table_data, physical_base_address, 8);
723 build_append_int_noprefix(table_data, gicv, 8); /* GICV */
724 build_append_int_noprefix(table_data, gich, 8); /* GICH */
725 /* VGIC Maintenance interrupt */
726 build_append_int_noprefix(table_data, vgic_interrupt, 4);
727 build_append_int_noprefix(table_data, 0, 8); /* GICR Base Address*/
728 /* MPIDR */
729 build_append_int_noprefix(table_data, arm_cpu_mp_affinity(armcpu), 8);
730 /* Processor Power Efficiency Class */
731 build_append_int_noprefix(table_data, 0, 1);
732 /* Reserved */
733 build_append_int_noprefix(table_data, 0, 3);
734 }
735
736 if (vms->gic_version != VIRT_GIC_VERSION_2) {
737 build_append_gicr(table_data, memmap[VIRT_GIC_REDIST].base,
738 memmap[VIRT_GIC_REDIST].size);
739 if (virt_gicv3_redist_region_count(vms) == 2) {
740 build_append_gicr(table_data, memmap[VIRT_HIGH_GIC_REDIST2].base,
741 memmap[VIRT_HIGH_GIC_REDIST2].size);
742 }
743
744 if (its_class_name() && !vmc->no_its) {
745 /*
746 * ACPI spec, Revision 6.0 Errata A
747 * (original 6.0 definition has invalid Length)
748 * 5.2.12.18 GIC ITS Structure
749 */
750 build_append_int_noprefix(table_data, 0xF, 1); /* Type */
751 build_append_int_noprefix(table_data, 20, 1); /* Length */
752 build_append_int_noprefix(table_data, 0, 2); /* Reserved */
753 build_append_int_noprefix(table_data, 0, 4); /* GIC ITS ID */
754 /* Physical Base Address */
755 build_append_int_noprefix(table_data, memmap[VIRT_GIC_ITS].base, 8);
756 build_append_int_noprefix(table_data, 0, 4); /* Reserved */
757 }
758 } else {
759 const uint16_t spi_base = vms->irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE;
760
761 /* 5.2.12.16 GIC MSI Frame Structure */
762 build_append_int_noprefix(table_data, 0xD, 1); /* Type */
763 build_append_int_noprefix(table_data, 24, 1); /* Length */
764 build_append_int_noprefix(table_data, 0, 2); /* Reserved */
765 build_append_int_noprefix(table_data, 0, 4); /* GIC MSI Frame ID */
766 /* Physical Base Address */
767 build_append_int_noprefix(table_data, memmap[VIRT_GIC_V2M].base, 8);
768 build_append_int_noprefix(table_data, 1, 4); /* Flags */
769 /* SPI Count */
770 build_append_int_noprefix(table_data, NUM_GICV2M_SPIS, 2);
771 build_append_int_noprefix(table_data, spi_base, 2); /* SPI Base */
772 }
773 acpi_table_end(linker, &table);
774 }
775
776 /* FADT */
build_fadt_rev6(GArray * table_data,BIOSLinker * linker,VirtMachineState * vms,unsigned dsdt_tbl_offset)777 static void build_fadt_rev6(GArray *table_data, BIOSLinker *linker,
778 VirtMachineState *vms, unsigned dsdt_tbl_offset)
779 {
780 /* ACPI v6.3 */
781 AcpiFadtData fadt = {
782 .rev = 6,
783 .minor_ver = 3,
784 .flags = 1 << ACPI_FADT_F_HW_REDUCED_ACPI,
785 .xdsdt_tbl_offset = &dsdt_tbl_offset,
786 };
787
788 switch (vms->psci_conduit) {
789 case QEMU_PSCI_CONDUIT_DISABLED:
790 fadt.arm_boot_arch = 0;
791 break;
792 case QEMU_PSCI_CONDUIT_HVC:
793 fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT |
794 ACPI_FADT_ARM_PSCI_USE_HVC;
795 break;
796 case QEMU_PSCI_CONDUIT_SMC:
797 fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT;
798 break;
799 default:
800 g_assert_not_reached();
801 }
802
803 build_fadt(table_data, linker, &fadt, vms->oem_id, vms->oem_table_id);
804 }
805
806 /* DSDT */
807 static void
build_dsdt(GArray * table_data,BIOSLinker * linker,VirtMachineState * vms)808 build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
809 {
810 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
811 Aml *scope, *dsdt;
812 MachineState *ms = MACHINE(vms);
813 const MemMapEntry *memmap = vms->memmap;
814 const int *irqmap = vms->irqmap;
815 AcpiTable table = { .sig = "DSDT", .rev = 2, .oem_id = vms->oem_id,
816 .oem_table_id = vms->oem_table_id };
817
818 acpi_table_begin(&table, table_data);
819 dsdt = init_aml_allocator();
820
821 /* When booting the VM with UEFI, UEFI takes ownership of the RTC hardware.
822 * While UEFI can use libfdt to disable the RTC device node in the DTB that
823 * it passes to the OS, it cannot modify AML. Therefore, we won't generate
824 * the RTC ACPI device at all when using UEFI.
825 */
826 scope = aml_scope("\\_SB");
827 acpi_dsdt_add_cpus(scope, vms);
828 acpi_dsdt_add_uart(scope, &memmap[VIRT_UART0],
829 (irqmap[VIRT_UART0] + ARM_SPI_BASE), 0);
830 if (vms->second_ns_uart_present) {
831 acpi_dsdt_add_uart(scope, &memmap[VIRT_UART1],
832 (irqmap[VIRT_UART1] + ARM_SPI_BASE), 1);
833 }
834 if (vmc->acpi_expose_flash) {
835 acpi_dsdt_add_flash(scope, &memmap[VIRT_FLASH]);
836 }
837 fw_cfg_acpi_dsdt_add(scope, &memmap[VIRT_FW_CFG]);
838 virtio_acpi_dsdt_add(scope, memmap[VIRT_MMIO].base, memmap[VIRT_MMIO].size,
839 (irqmap[VIRT_MMIO] + ARM_SPI_BASE),
840 0, NUM_VIRTIO_TRANSPORTS);
841 acpi_dsdt_add_pci(scope, memmap, irqmap[VIRT_PCIE] + ARM_SPI_BASE, vms);
842 if (vms->acpi_dev) {
843 build_ged_aml(scope, "\\_SB."GED_DEVICE,
844 HOTPLUG_HANDLER(vms->acpi_dev),
845 irqmap[VIRT_ACPI_GED] + ARM_SPI_BASE, AML_SYSTEM_MEMORY,
846 memmap[VIRT_ACPI_GED].base);
847 } else {
848 acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO],
849 (irqmap[VIRT_GPIO] + ARM_SPI_BASE));
850 }
851
852 if (vms->acpi_dev) {
853 uint32_t event = object_property_get_uint(OBJECT(vms->acpi_dev),
854 "ged-event", &error_abort);
855
856 if (event & ACPI_GED_MEM_HOTPLUG_EVT) {
857 build_memory_hotplug_aml(scope, ms->ram_slots, "\\_SB", NULL,
858 AML_SYSTEM_MEMORY,
859 memmap[VIRT_PCDIMM_ACPI].base);
860 }
861 }
862
863 acpi_dsdt_add_power_button(scope);
864 #ifdef CONFIG_TPM
865 acpi_dsdt_add_tpm(scope, vms);
866 #endif
867
868 aml_append(dsdt, scope);
869
870 /* copy AML table into ACPI tables blob */
871 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
872
873 acpi_table_end(linker, &table);
874 free_aml_allocator();
875 }
876
877 typedef
878 struct AcpiBuildState {
879 /* Copy of table in RAM (for patching). */
880 MemoryRegion *table_mr;
881 MemoryRegion *rsdp_mr;
882 MemoryRegion *linker_mr;
883 /* Is table patched? */
884 bool patched;
885 } AcpiBuildState;
886
acpi_align_size(GArray * blob,unsigned align)887 static void acpi_align_size(GArray *blob, unsigned align)
888 {
889 /*
890 * Align size to multiple of given size. This reduces the chance
891 * we need to change size in the future (breaking cross version migration).
892 */
893 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
894 }
895
896 static
virt_acpi_build(VirtMachineState * vms,AcpiBuildTables * tables)897 void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
898 {
899 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
900 GArray *table_offsets;
901 unsigned dsdt, xsdt;
902 GArray *tables_blob = tables->table_data;
903 MachineState *ms = MACHINE(vms);
904
905 table_offsets = g_array_new(false, true /* clear */,
906 sizeof(uint32_t));
907
908 bios_linker_loader_alloc(tables->linker,
909 ACPI_BUILD_TABLE_FILE, tables_blob,
910 64, false /* high memory */);
911
912 /* DSDT is pointed to by FADT */
913 dsdt = tables_blob->len;
914 build_dsdt(tables_blob, tables->linker, vms);
915
916 /* FADT MADT PPTT GTDT MCFG SPCR DBG2 pointed to by RSDT */
917 acpi_add_table(table_offsets, tables_blob);
918 build_fadt_rev6(tables_blob, tables->linker, vms, dsdt);
919
920 acpi_add_table(table_offsets, tables_blob);
921 build_madt(tables_blob, tables->linker, vms);
922
923 if (!vmc->no_cpu_topology) {
924 acpi_add_table(table_offsets, tables_blob);
925 build_pptt(tables_blob, tables->linker, ms,
926 vms->oem_id, vms->oem_table_id);
927 }
928
929 acpi_add_table(table_offsets, tables_blob);
930 build_gtdt(tables_blob, tables->linker, vms);
931
932 acpi_add_table(table_offsets, tables_blob);
933 {
934 AcpiMcfgInfo mcfg = {
935 .base = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].base,
936 .size = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].size,
937 };
938 build_mcfg(tables_blob, tables->linker, &mcfg, vms->oem_id,
939 vms->oem_table_id);
940 }
941
942 acpi_add_table(table_offsets, tables_blob);
943 spcr_setup(tables_blob, tables->linker, vms);
944
945 acpi_add_table(table_offsets, tables_blob);
946 build_dbg2(tables_blob, tables->linker, vms);
947
948 if (vms->ras) {
949 acpi_add_table(table_offsets, tables_blob);
950 acpi_build_hest(tables_blob, tables->hardware_errors, tables->linker,
951 vms->oem_id, vms->oem_table_id);
952 }
953
954 if (ms->numa_state->num_nodes > 0) {
955 acpi_add_table(table_offsets, tables_blob);
956 build_srat(tables_blob, tables->linker, vms);
957 if (ms->numa_state->have_numa_distance) {
958 acpi_add_table(table_offsets, tables_blob);
959 build_slit(tables_blob, tables->linker, ms, vms->oem_id,
960 vms->oem_table_id);
961 }
962
963 if (ms->numa_state->hmat_enabled) {
964 acpi_add_table(table_offsets, tables_blob);
965 build_hmat(tables_blob, tables->linker, ms->numa_state,
966 vms->oem_id, vms->oem_table_id);
967 }
968 }
969
970 if (ms->nvdimms_state->is_enabled) {
971 nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
972 ms->nvdimms_state, ms->ram_slots, vms->oem_id,
973 vms->oem_table_id);
974 }
975
976 if (its_class_name() && !vmc->no_its) {
977 acpi_add_table(table_offsets, tables_blob);
978 build_iort(tables_blob, tables->linker, vms);
979 }
980
981 #ifdef CONFIG_TPM
982 if (tpm_get_version(tpm_find()) == TPM_VERSION_2_0) {
983 acpi_add_table(table_offsets, tables_blob);
984 build_tpm2(tables_blob, tables->linker, tables->tcpalog, vms->oem_id,
985 vms->oem_table_id);
986 }
987 #endif
988
989 if (vms->iommu == VIRT_IOMMU_VIRTIO) {
990 acpi_add_table(table_offsets, tables_blob);
991 build_viot(ms, tables_blob, tables->linker, vms->virtio_iommu_bdf,
992 vms->oem_id, vms->oem_table_id);
993 }
994
995 /* XSDT is pointed to by RSDP */
996 xsdt = tables_blob->len;
997 build_xsdt(tables_blob, tables->linker, table_offsets, vms->oem_id,
998 vms->oem_table_id);
999
1000 /* RSDP is in FSEG memory, so allocate it separately */
1001 {
1002 AcpiRsdpData rsdp_data = {
1003 .revision = 2,
1004 .oem_id = vms->oem_id,
1005 .xsdt_tbl_offset = &xsdt,
1006 .rsdt_tbl_offset = NULL,
1007 };
1008 build_rsdp(tables->rsdp, tables->linker, &rsdp_data);
1009 }
1010
1011 /*
1012 * The align size is 128, warn if 64k is not enough therefore
1013 * the align size could be resized.
1014 */
1015 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) {
1016 warn_report("ACPI table size %u exceeds %d bytes,"
1017 " migration may not work",
1018 tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2);
1019 error_printf("Try removing CPUs, NUMA nodes, memory slots"
1020 " or PCI bridges.\n");
1021 }
1022 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE);
1023
1024
1025 /* Cleanup memory that's no longer used. */
1026 g_array_free(table_offsets, true);
1027 }
1028
acpi_ram_update(MemoryRegion * mr,GArray * data)1029 static void acpi_ram_update(MemoryRegion *mr, GArray *data)
1030 {
1031 uint32_t size = acpi_data_len(data);
1032
1033 /* Make sure RAM size is correct - in case it got changed
1034 * e.g. by migration */
1035 memory_region_ram_resize(mr, size, &error_abort);
1036
1037 memcpy(memory_region_get_ram_ptr(mr), data->data, size);
1038 memory_region_set_dirty(mr, 0, size);
1039 }
1040
virt_acpi_build_update(void * build_opaque)1041 static void virt_acpi_build_update(void *build_opaque)
1042 {
1043 AcpiBuildState *build_state = build_opaque;
1044 AcpiBuildTables tables;
1045
1046 /* No state to update or already patched? Nothing to do. */
1047 if (!build_state || build_state->patched) {
1048 return;
1049 }
1050 build_state->patched = true;
1051
1052 acpi_build_tables_init(&tables);
1053
1054 virt_acpi_build(VIRT_MACHINE(qdev_get_machine()), &tables);
1055
1056 acpi_ram_update(build_state->table_mr, tables.table_data);
1057 acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
1058 acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob);
1059
1060 acpi_build_tables_cleanup(&tables, true);
1061 }
1062
virt_acpi_build_reset(void * build_opaque)1063 static void virt_acpi_build_reset(void *build_opaque)
1064 {
1065 AcpiBuildState *build_state = build_opaque;
1066 build_state->patched = false;
1067 }
1068
1069 static const VMStateDescription vmstate_virt_acpi_build = {
1070 .name = "virt_acpi_build",
1071 .version_id = 1,
1072 .minimum_version_id = 1,
1073 .fields = (const VMStateField[]) {
1074 VMSTATE_BOOL(patched, AcpiBuildState),
1075 VMSTATE_END_OF_LIST()
1076 },
1077 };
1078
virt_acpi_setup(VirtMachineState * vms)1079 void virt_acpi_setup(VirtMachineState *vms)
1080 {
1081 AcpiBuildTables tables;
1082 AcpiBuildState *build_state;
1083 AcpiGedState *acpi_ged_state;
1084
1085 if (!vms->fw_cfg) {
1086 trace_virt_acpi_setup();
1087 return;
1088 }
1089
1090 if (!virt_is_acpi_enabled(vms)) {
1091 trace_virt_acpi_setup();
1092 return;
1093 }
1094
1095 build_state = g_malloc0(sizeof *build_state);
1096
1097 acpi_build_tables_init(&tables);
1098 virt_acpi_build(vms, &tables);
1099
1100 /* Now expose it all to Guest */
1101 build_state->table_mr = acpi_add_rom_blob(virt_acpi_build_update,
1102 build_state, tables.table_data,
1103 ACPI_BUILD_TABLE_FILE);
1104 assert(build_state->table_mr != NULL);
1105
1106 build_state->linker_mr = acpi_add_rom_blob(virt_acpi_build_update,
1107 build_state,
1108 tables.linker->cmd_blob,
1109 ACPI_BUILD_LOADER_FILE);
1110
1111 fw_cfg_add_file(vms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data,
1112 acpi_data_len(tables.tcpalog));
1113
1114 if (vms->ras) {
1115 assert(vms->acpi_dev);
1116 acpi_ged_state = ACPI_GED(vms->acpi_dev);
1117 acpi_ghes_add_fw_cfg(&acpi_ged_state->ghes_state,
1118 vms->fw_cfg, tables.hardware_errors);
1119 }
1120
1121 build_state->rsdp_mr = acpi_add_rom_blob(virt_acpi_build_update,
1122 build_state, tables.rsdp,
1123 ACPI_BUILD_RSDP_FILE);
1124
1125 qemu_register_reset(virt_acpi_build_reset, build_state);
1126 virt_acpi_build_reset(build_state);
1127 vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state);
1128
1129 /* Cleanup tables but don't free the memory: we track it
1130 * in build_state.
1131 */
1132 acpi_build_tables_cleanup(&tables, false);
1133 }
1134