hw/arm/virt-acpi-build.c

   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-common.h"
  32 #include "qemu/bitmap.h"
  33 #include "trace.h"
  34 #include "qom/cpu.h"
  35 #include "target/arm/cpu.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/hw.h"
  42 #include "hw/acpi/aml-build.h"
  43 #include "hw/pci/pcie_host.h"
  44 #include "hw/pci/pci.h"
  45 #include "hw/arm/virt.h"
  46 #include "sysemu/numa.h"
  47 #include "kvm_arm.h"
  48
  49 #define ARM_SPI_BASE 32
  50 #define ACPI_POWER_BUTTON_DEVICE "PWRB"
  51
  52 static void acpi_dsdt_add_cpus(Aml *scope, int smp_cpus)
  53 {
  54     uint16_t i;
  55
  56     for (i = 0; i < smp_cpus; i++) {
  57         Aml *dev = aml_device("C%.03X", i);
  58         aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
  59         aml_append(dev, aml_name_decl("_UID", aml_int(i)));
  60         aml_append(scope, dev);
  61     }
  62 }
  63
  64 static void acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap,
  65                                            uint32_t uart_irq)
  66 {
  67     Aml *dev = aml_device("COM0");
  68     aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0011")));
  69     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
  70
  71     Aml *crs = aml_resource_template();
  72     aml_append(crs, aml_memory32_fixed(uart_memmap->base,
  73                                        uart_memmap->size, AML_READ_WRITE));
  74     aml_append(crs,
  75                aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
  76                              AML_EXCLUSIVE, &uart_irq, 1));
  77     aml_append(dev, aml_name_decl("_CRS", crs));
  78
  79     /* The _ADR entry is used to link this device to the UART described
  80      * in the SPCR table, i.e. SPCR.base_address.address == _ADR.
  81      */
  82     aml_append(dev, aml_name_decl("_ADR", aml_int(uart_memmap->base)));
  83
  84     aml_append(scope, dev);
  85 }
  86
  87 static void acpi_dsdt_add_fw_cfg(Aml *scope, const MemMapEntry *fw_cfg_memmap)
  88 {
  89     Aml *dev = aml_device("FWCF");
  90     aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002")));
  91     /* device present, functioning, decoding, not shown in UI */
  92     aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
  93     aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
  94
  95     Aml *crs = aml_resource_template();
  96     aml_append(crs, aml_memory32_fixed(fw_cfg_memmap->base,
  97                                        fw_cfg_memmap->size, AML_READ_WRITE));
  98     aml_append(dev, aml_name_decl("_CRS", crs));
  99     aml_append(scope, dev);
 100 }
 101
 102 static void acpi_dsdt_add_flash(Aml *scope, const MemMapEntry *flash_memmap)
 103 {
 104     Aml *dev, *crs;
 105     hwaddr base = flash_memmap->base;
 106     hwaddr size = flash_memmap->size / 2;
 107
 108     dev = aml_device("FLS0");
 109     aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
 110     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 111
 112     crs = aml_resource_template();
 113     aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
 114     aml_append(dev, aml_name_decl("_CRS", crs));
 115     aml_append(scope, dev);
 116
 117     dev = aml_device("FLS1");
 118     aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
 119     aml_append(dev, aml_name_decl("_UID", aml_int(1)));
 120     crs = aml_resource_template();
 121     aml_append(crs, aml_memory32_fixed(base + size, size, AML_READ_WRITE));
 122     aml_append(dev, aml_name_decl("_CRS", crs));
 123     aml_append(scope, dev);
 124 }
 125
 126 static void acpi_dsdt_add_virtio(Aml *scope,
 127                                  const MemMapEntry *virtio_mmio_memmap,
 128                                  uint32_t mmio_irq, int num)
 129 {
 130     hwaddr base = virtio_mmio_memmap->base;
 131     hwaddr size = virtio_mmio_memmap->size;
 132     int i;
 133
 134     for (i = 0; i < num; i++) {
 135         uint32_t irq = mmio_irq + i;
 136         Aml *dev = aml_device("VR%02u", i);
 137         aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
 138         aml_append(dev, aml_name_decl("_UID", aml_int(i)));
 139         aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
 140
 141         Aml *crs = aml_resource_template();
 142         aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
 143         aml_append(crs,
 144                    aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 145                                  AML_EXCLUSIVE, &irq, 1));
 146         aml_append(dev, aml_name_decl("_CRS", crs));
 147         aml_append(scope, dev);
 148         base += size;
 149     }
 150 }
 151
 152 static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
 153                               uint32_t irq, bool use_highmem)
 154 {
 155     Aml *method, *crs, *ifctx, *UUID, *ifctx1, *elsectx, *buf;
 156     int i, bus_no;
 157     hwaddr base_mmio = memmap[VIRT_PCIE_MMIO].base;
 158     hwaddr size_mmio = memmap[VIRT_PCIE_MMIO].size;
 159     hwaddr base_pio = memmap[VIRT_PCIE_PIO].base;
 160     hwaddr size_pio = memmap[VIRT_PCIE_PIO].size;
 161     hwaddr base_ecam = memmap[VIRT_PCIE_ECAM].base;
 162     hwaddr size_ecam = memmap[VIRT_PCIE_ECAM].size;
 163     int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
 164
 165     Aml *dev = aml_device("%s", "PCI0");
 166     aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
 167     aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
 168     aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
 169     aml_append(dev, aml_name_decl("_BBN", aml_int(0)));
 170     aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
 171     aml_append(dev, aml_name_decl("_UID", aml_string("PCI0")));
 172     aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device")));
 173     aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
 174
 175     /* Declare the PCI Routing Table. */
 176     Aml *rt_pkg = aml_package(nr_pcie_buses * PCI_NUM_PINS);
 177     for (bus_no = 0; bus_no < nr_pcie_buses; bus_no++) {
 178         for (i = 0; i < PCI_NUM_PINS; i++) {
 179             int gsi = (i + bus_no) % PCI_NUM_PINS;
 180             Aml *pkg = aml_package(4);
 181             aml_append(pkg, aml_int((bus_no << 16) | 0xFFFF));
 182             aml_append(pkg, aml_int(i));
 183             aml_append(pkg, aml_name("GSI%d", gsi));
 184             aml_append(pkg, aml_int(0));
 185             aml_append(rt_pkg, pkg);
 186         }
 187     }
 188     aml_append(dev, aml_name_decl("_PRT", rt_pkg));
 189
 190     /* Create GSI link device */
 191     for (i = 0; i < PCI_NUM_PINS; i++) {
 192         uint32_t irqs =  irq + i;
 193         Aml *dev_gsi = aml_device("GSI%d", i);
 194         aml_append(dev_gsi, aml_name_decl("_HID", aml_string("PNP0C0F")));
 195         aml_append(dev_gsi, aml_name_decl("_UID", aml_int(0)));
 196         crs = aml_resource_template();
 197         aml_append(crs,
 198                    aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 199                                  AML_EXCLUSIVE, &irqs, 1));
 200         aml_append(dev_gsi, aml_name_decl("_PRS", crs));
 201         crs = aml_resource_template();
 202         aml_append(crs,
 203                    aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 204                                  AML_EXCLUSIVE, &irqs, 1));
 205         aml_append(dev_gsi, aml_name_decl("_CRS", crs));
 206         method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
 207         aml_append(dev_gsi, method);
 208         aml_append(dev, dev_gsi);
 209     }
 210
 211     method = aml_method("_CBA", 0, AML_NOTSERIALIZED);
 212     aml_append(method, aml_return(aml_int(base_ecam)));
 213     aml_append(dev, method);
 214
 215     method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
 216     Aml *rbuf = aml_resource_template();
 217     aml_append(rbuf,
 218         aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
 219                             0x0000, 0x0000, nr_pcie_buses - 1, 0x0000,
 220                             nr_pcie_buses));
 221     aml_append(rbuf,
 222         aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
 223                          AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000, base_mmio,
 224                          base_mmio + size_mmio - 1, 0x0000, size_mmio));
 225     aml_append(rbuf,
 226         aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
 227                      AML_ENTIRE_RANGE, 0x0000, 0x0000, size_pio - 1, base_pio,
 228                      size_pio));
 229
 230     if (use_highmem) {
 231         hwaddr base_mmio_high = memmap[VIRT_PCIE_MMIO_HIGH].base;
 232         hwaddr size_mmio_high = memmap[VIRT_PCIE_MMIO_HIGH].size;
 233
 234         aml_append(rbuf,
 235             aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
 236                              AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
 237                              base_mmio_high,
 238                              base_mmio_high + size_mmio_high - 1, 0x0000,
 239                              size_mmio_high));
 240     }
 241
 242     aml_append(method, aml_name_decl("RBUF", rbuf));
 243     aml_append(method, aml_return(rbuf));
 244     aml_append(dev, method);
 245
 246     /* Declare an _OSC (OS Control Handoff) method */
 247     aml_append(dev, aml_name_decl("SUPP", aml_int(0)));
 248     aml_append(dev, aml_name_decl("CTRL", aml_int(0)));
 249     method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
 250     aml_append(method,
 251         aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
 252
 253     /* PCI Firmware Specification 3.0
 254      * 4.5.1. _OSC Interface for PCI Host Bridge Devices
 255      * The _OSC interface for a PCI/PCI-X/PCI Express hierarchy is
 256      * identified by the Universal Unique IDentifier (UUID)
 257      * 33DB4D5B-1FF7-401C-9657-7441C03DD766
 258      */
 259     UUID = aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766");
 260     ifctx = aml_if(aml_equal(aml_arg(0), UUID));
 261     aml_append(ifctx,
 262         aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
 263     aml_append(ifctx,
 264         aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
 265     aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP")));
 266     aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL")));
 267     aml_append(ifctx, aml_store(aml_and(aml_name("CTRL"), aml_int(0x1D), NULL),
 268                                 aml_name("CTRL")));
 269
 270     ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
 271     aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x08), NULL),
 272                                  aml_name("CDW1")));
 273     aml_append(ifctx, ifctx1);
 274
 275     ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL"))));
 276     aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x10), NULL),
 277                                  aml_name("CDW1")));
 278     aml_append(ifctx, ifctx1);
 279
 280     aml_append(ifctx, aml_store(aml_name("CTRL"), aml_name("CDW3")));
 281     aml_append(ifctx, aml_return(aml_arg(3)));
 282     aml_append(method, ifctx);
 283
 284     elsectx = aml_else();
 285     aml_append(elsectx, aml_store(aml_or(aml_name("CDW1"), aml_int(4), NULL),
 286                                   aml_name("CDW1")));
 287     aml_append(elsectx, aml_return(aml_arg(3)));
 288     aml_append(method, elsectx);
 289     aml_append(dev, method);
 290
 291     method = aml_method("_DSM", 4, AML_NOTSERIALIZED);
 292
 293     /* PCI Firmware Specification 3.0
 294      * 4.6.1. _DSM for PCI Express Slot Information
 295      * The UUID in _DSM in this context is
 296      * {E5C937D0-3553-4D7A-9117-EA4D19C3434D}
 297      */
 298     UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
 299     ifctx = aml_if(aml_equal(aml_arg(0), UUID));
 300     ifctx1 = aml_if(aml_equal(aml_arg(2), aml_int(0)));
 301     uint8_t byte_list[1] = {1};
 302     buf = aml_buffer(1, byte_list);
 303     aml_append(ifctx1, aml_return(buf));
 304     aml_append(ifctx, ifctx1);
 305     aml_append(method, ifctx);
 306
 307     byte_list[0] = 0;
 308     buf = aml_buffer(1, byte_list);
 309     aml_append(method, aml_return(buf));
 310     aml_append(dev, method);
 311
 312     Aml *dev_rp0 = aml_device("%s", "RP0");
 313     aml_append(dev_rp0, aml_name_decl("_ADR", aml_int(0)));
 314     aml_append(dev, dev_rp0);
 315
 316     Aml *dev_res0 = aml_device("%s", "RES0");
 317     aml_append(dev_res0, aml_name_decl("_HID", aml_string("PNP0C02")));
 318     crs = aml_resource_template();
 319     aml_append(crs, aml_memory32_fixed(base_ecam, size_ecam, AML_READ_WRITE));
 320     aml_append(dev_res0, aml_name_decl("_CRS", crs));
 321     aml_append(dev, dev_res0);
 322     aml_append(scope, dev);
 323 }
 324
 325 static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
 326                                            uint32_t gpio_irq)
 327 {
 328     Aml *dev = aml_device("GPO0");
 329     aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061")));
 330     aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
 331     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 332
 333     Aml *crs = aml_resource_template();
 334     aml_append(crs, aml_memory32_fixed(gpio_memmap->base, gpio_memmap->size,
 335                                        AML_READ_WRITE));
 336     aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 337                                   AML_EXCLUSIVE, &gpio_irq, 1));
 338     aml_append(dev, aml_name_decl("_CRS", crs));
 339
 340     Aml *aei = aml_resource_template();
 341     /* Pin 3 for power button */
 342     const uint32_t pin_list[1] = {3};
 343     aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH,
 344                                  AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1,
 345                                  "GPO0", NULL, 0));
 346     aml_append(dev, aml_name_decl("_AEI", aei));
 347
 348     /* _E03 is handle for power button */
 349     Aml *method = aml_method("_E03", 0, AML_NOTSERIALIZED);
 350     aml_append(method, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE),
 351                                   aml_int(0x80)));
 352     aml_append(dev, method);
 353     aml_append(scope, dev);
 354 }
 355
 356 static void acpi_dsdt_add_power_button(Aml *scope)
 357 {
 358     Aml *dev = aml_device(ACPI_POWER_BUTTON_DEVICE);
 359     aml_append(dev, aml_name_decl("_HID", aml_string("PNP0C0C")));
 360     aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
 361     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 362     aml_append(scope, dev);
 363 }
 364
 365 /* RSDP */
 366 static GArray *
 367 build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned xsdt_tbl_offset)
 368 {
 369     AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
 370     unsigned xsdt_pa_size = sizeof(rsdp->xsdt_physical_address);
 371     unsigned xsdt_pa_offset =
 372         (char *)&rsdp->xsdt_physical_address - rsdp_table->data;
 373
 374     bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, rsdp_table, 16,
 375                              true /* fseg memory */);
 376
 377     memcpy(&rsdp->signature, "RSD PTR ", sizeof(rsdp->signature));
 378     memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, sizeof(rsdp->oem_id));
 379     rsdp->length = cpu_to_le32(sizeof(*rsdp));
 380     rsdp->revision = 0x02;
 381
 382     /* Address to be filled by Guest linker */
 383     bios_linker_loader_add_pointer(linker,
 384         ACPI_BUILD_RSDP_FILE, xsdt_pa_offset, xsdt_pa_size,
 385         ACPI_BUILD_TABLE_FILE, xsdt_tbl_offset);
 386
 387     /* Checksum to be filled by Guest linker */
 388     bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
 389         (char *)rsdp - rsdp_table->data, sizeof *rsdp,
 390         (char *)&rsdp->checksum - rsdp_table->data);
 391
 392     return rsdp_table;
 393 }
 394
 395 static void
 396 build_iort(GArray *table_data, BIOSLinker *linker)
 397 {
 398     int iort_start = table_data->len;
 399     AcpiIortIdMapping *idmap;
 400     AcpiIortItsGroup *its;
 401     AcpiIortTable *iort;
 402     size_t node_size, iort_length;
 403     AcpiIortRC *rc;
 404
 405     iort = acpi_data_push(table_data, sizeof(*iort));
 406
 407     iort_length = sizeof(*iort);
 408     iort->node_count = cpu_to_le32(2); /* RC and ITS nodes */
 409     iort->node_offset = cpu_to_le32(sizeof(*iort));
 410
 411     /* ITS group node */
 412     node_size =  sizeof(*its) + sizeof(uint32_t);
 413     iort_length += node_size;
 414     its = acpi_data_push(table_data, node_size);
 415
 416     its->type = ACPI_IORT_NODE_ITS_GROUP;
 417     its->length = cpu_to_le16(node_size);
 418     its->its_count = cpu_to_le32(1);
 419     its->identifiers[0] = 0; /* MADT translation_id */
 420
 421     /* Root Complex Node */
 422     node_size = sizeof(*rc) + sizeof(*idmap);
 423     iort_length += node_size;
 424     rc = acpi_data_push(table_data, node_size);
 425
 426     rc->type = ACPI_IORT_NODE_PCI_ROOT_COMPLEX;
 427     rc->length = cpu_to_le16(node_size);
 428     rc->mapping_count = cpu_to_le32(1);
 429     rc->mapping_offset = cpu_to_le32(sizeof(*rc));
 430
 431     /* fully coherent device */
 432     rc->memory_properties.cache_coherency = cpu_to_le32(1);
 433     rc->memory_properties.memory_flags = 0x3; /* CCA = CPM = DCAS = 1 */
 434     rc->pci_segment_number = 0; /* MCFG pci_segment */
 435
 436     /* Identity RID mapping covering the whole input RID range */
 437     idmap = &rc->id_mapping_array[0];
 438     idmap->input_base = 0;
 439     idmap->id_count = cpu_to_le32(0xFFFF);
 440     idmap->output_base = 0;
 441     /* output IORT node is the ITS group node (the first node) */
 442     idmap->output_reference = cpu_to_le32(iort->node_offset);
 443
 444     iort->length = cpu_to_le32(iort_length);
 445
 446     build_header(linker, table_data, (void *)(table_data->data + iort_start),
 447                  "IORT", table_data->len - iort_start, 0, NULL, NULL);
 448 }
 449
 450 static void
 451 build_spcr(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
 452 {
 453     AcpiSerialPortConsoleRedirection *spcr;
 454     const MemMapEntry *uart_memmap = &vms->memmap[VIRT_UART];
 455     int irq = vms->irqmap[VIRT_UART] + ARM_SPI_BASE;
 456
 457     spcr = acpi_data_push(table_data, sizeof(*spcr));
 458
 459     spcr->interface_type = 0x3;    /* ARM PL011 UART */
 460
 461     spcr->base_address.space_id = AML_SYSTEM_MEMORY;
 462     spcr->base_address.bit_width = 8;
 463     spcr->base_address.bit_offset = 0;
 464     spcr->base_address.access_width = 1;
 465     spcr->base_address.address = cpu_to_le64(uart_memmap->base);
 466
 467     spcr->interrupt_types = (1 << 3); /* Bit[3] ARMH GIC interrupt */
 468     spcr->gsi = cpu_to_le32(irq);  /* Global System Interrupt */
 469
 470     spcr->baud = 3;                /* Baud Rate: 3 = 9600 */
 471     spcr->parity = 0;              /* No Parity */
 472     spcr->stopbits = 1;            /* 1 Stop bit */
 473     spcr->flowctrl = (1 << 1);     /* Bit[1] = RTS/CTS hardware flow control */
 474     spcr->term_type = 0;           /* Terminal Type: 0 = VT100 */
 475
 476     spcr->pci_device_id = 0xffff;  /* PCI Device ID: not a PCI device */
 477     spcr->pci_vendor_id = 0xffff;  /* PCI Vendor ID: not a PCI device */
 478
 479     build_header(linker, table_data, (void *)spcr, "SPCR", sizeof(*spcr), 2,
 480                  NULL, NULL);
 481 }
 482
 483 static void
 484 build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
 485 {
 486     AcpiSystemResourceAffinityTable *srat;
 487     AcpiSratProcessorGiccAffinity *core;
 488     AcpiSratMemoryAffinity *numamem;
 489     int i, srat_start;
 490     uint64_t mem_base;
 491     MachineClass *mc = MACHINE_GET_CLASS(vms);
 492     const CPUArchIdList *cpu_list = mc->possible_cpu_arch_ids(MACHINE(vms));
 493
 494     srat_start = table_data->len;
 495     srat = acpi_data_push(table_data, sizeof(*srat));
 496     srat->reserved1 = cpu_to_le32(1);
 497
 498     for (i = 0; i < cpu_list->len; ++i) {
 499         core = acpi_data_push(table_data, sizeof(*core));
 500         core->type = ACPI_SRAT_PROCESSOR_GICC;
 501         core->length = sizeof(*core);
 502         core->proximity = cpu_to_le32(cpu_list->cpus[i].props.node_id);
 503         core->acpi_processor_uid = cpu_to_le32(i);
 504         core->flags = cpu_to_le32(1);
 505     }
 506
 507     mem_base = vms->memmap[VIRT_MEM].base;
 508     for (i = 0; i < nb_numa_nodes; ++i) {
 509         numamem = acpi_data_push(table_data, sizeof(*numamem));
 510         build_srat_memory(numamem, mem_base, numa_info[i].node_mem, i,
 511                           MEM_AFFINITY_ENABLED);
 512         mem_base += numa_info[i].node_mem;
 513     }
 514
 515     build_header(linker, table_data, (void *)srat, "SRAT",
 516                  table_data->len - srat_start, 3, NULL, NULL);
 517 }
 518
 519 static void
 520 build_mcfg(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
 521 {
 522     AcpiTableMcfg *mcfg;
 523     const MemMapEntry *memmap = vms->memmap;
 524     int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
 525
 526     mcfg = acpi_data_push(table_data, len);
 527     mcfg->allocation[0].address = cpu_to_le64(memmap[VIRT_PCIE_ECAM].base);
 528
 529     /* Only a single allocation so no need to play with segments */
 530     mcfg->allocation[0].pci_segment = cpu_to_le16(0);
 531     mcfg->allocation[0].start_bus_number = 0;
 532     mcfg->allocation[0].end_bus_number = (memmap[VIRT_PCIE_ECAM].size
 533                                           / PCIE_MMCFG_SIZE_MIN) - 1;
 534
 535     build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
 536 }
 537
 538 /* GTDT */
 539 static void
 540 build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
 541 {
 542     VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
 543     int gtdt_start = table_data->len;
 544     AcpiGenericTimerTable *gtdt;
 545     uint32_t irqflags;
 546
 547     if (vmc->claim_edge_triggered_timers) {
 548         irqflags = ACPI_GTDT_INTERRUPT_MODE_EDGE;
 549     } else {
 550         irqflags = ACPI_GTDT_INTERRUPT_MODE_LEVEL;
 551     }
 552
 553     gtdt = acpi_data_push(table_data, sizeof *gtdt);
 554     /* The interrupt values are the same with the device tree when adding 16 */
 555     gtdt->secure_el1_interrupt = cpu_to_le32(ARCH_TIMER_S_EL1_IRQ + 16);
 556     gtdt->secure_el1_flags = cpu_to_le32(irqflags);
 557
 558     gtdt->non_secure_el1_interrupt = cpu_to_le32(ARCH_TIMER_NS_EL1_IRQ + 16);
 559     gtdt->non_secure_el1_flags = cpu_to_le32(irqflags |
 560                                              ACPI_GTDT_CAP_ALWAYS_ON);
 561
 562     gtdt->virtual_timer_interrupt = cpu_to_le32(ARCH_TIMER_VIRT_IRQ + 16);
 563     gtdt->virtual_timer_flags = cpu_to_le32(irqflags);
 564
 565     gtdt->non_secure_el2_interrupt = cpu_to_le32(ARCH_TIMER_NS_EL2_IRQ + 16);
 566     gtdt->non_secure_el2_flags = cpu_to_le32(irqflags);
 567
 568     build_header(linker, table_data,
 569                  (void *)(table_data->data + gtdt_start), "GTDT",
 570                  table_data->len - gtdt_start, 2, NULL, NULL);
 571 }
 572
 573 /* MADT */
 574 static void
 575 build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
 576 {
 577     VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
 578     int madt_start = table_data->len;
 579     const MemMapEntry *memmap = vms->memmap;
 580     const int *irqmap = vms->irqmap;
 581     AcpiMultipleApicTable *madt;
 582     AcpiMadtGenericDistributor *gicd;
 583     AcpiMadtGenericMsiFrame *gic_msi;
 584     int i;
 585
 586     madt = acpi_data_push(table_data, sizeof *madt);
 587
 588     gicd = acpi_data_push(table_data, sizeof *gicd);
 589     gicd->type = ACPI_APIC_GENERIC_DISTRIBUTOR;
 590     gicd->length = sizeof(*gicd);
 591     gicd->base_address = cpu_to_le64(memmap[VIRT_GIC_DIST].base);
 592     gicd->version = vms->gic_version;
 593
 594     for (i = 0; i < vms->smp_cpus; i++) {
 595         AcpiMadtGenericCpuInterface *gicc = acpi_data_push(table_data,
 596                                                            sizeof(*gicc));
 597         ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(i));
 598
 599         gicc->type = ACPI_APIC_GENERIC_CPU_INTERFACE;
 600         gicc->length = sizeof(*gicc);
 601         if (vms->gic_version == 2) {
 602             gicc->base_address = cpu_to_le64(memmap[VIRT_GIC_CPU].base);
 603         }
 604         gicc->cpu_interface_number = cpu_to_le32(i);
 605         gicc->arm_mpidr = cpu_to_le64(armcpu->mp_affinity);
 606         gicc->uid = cpu_to_le32(i);
 607         gicc->flags = cpu_to_le32(ACPI_MADT_GICC_ENABLED);
 608
 609         if (arm_feature(&armcpu->env, ARM_FEATURE_PMU)) {
 610             gicc->performance_interrupt = cpu_to_le32(PPI(VIRTUAL_PMU_IRQ));
 611         }
 612         if (vms->virt && vms->gic_version == 3) {
 613             gicc->vgic_interrupt = cpu_to_le32(PPI(ARCH_GICV3_MAINT_IRQ));
 614         }
 615     }
 616
 617     if (vms->gic_version == 3) {
 618         AcpiMadtGenericTranslator *gic_its;
 619         AcpiMadtGenericRedistributor *gicr = acpi_data_push(table_data,
 620                                                          sizeof *gicr);
 621
 622         gicr->type = ACPI_APIC_GENERIC_REDISTRIBUTOR;
 623         gicr->length = sizeof(*gicr);
 624         gicr->base_address = cpu_to_le64(memmap[VIRT_GIC_REDIST].base);
 625         gicr->range_length = cpu_to_le32(memmap[VIRT_GIC_REDIST].size);
 626
 627         if (its_class_name() && !vmc->no_its) {
 628             gic_its = acpi_data_push(table_data, sizeof *gic_its);
 629             gic_its->type = ACPI_APIC_GENERIC_TRANSLATOR;
 630             gic_its->length = sizeof(*gic_its);
 631             gic_its->translation_id = 0;
 632             gic_its->base_address = cpu_to_le64(memmap[VIRT_GIC_ITS].base);
 633         }
 634     } else {
 635         gic_msi = acpi_data_push(table_data, sizeof *gic_msi);
 636         gic_msi->type = ACPI_APIC_GENERIC_MSI_FRAME;
 637         gic_msi->length = sizeof(*gic_msi);
 638         gic_msi->gic_msi_frame_id = 0;
 639         gic_msi->base_address = cpu_to_le64(memmap[VIRT_GIC_V2M].base);
 640         gic_msi->flags = cpu_to_le32(1);
 641         gic_msi->spi_count = cpu_to_le16(NUM_GICV2M_SPIS);
 642         gic_msi->spi_base = cpu_to_le16(irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE);
 643     }
 644
 645     build_header(linker, table_data,
 646                  (void *)(table_data->data + madt_start), "APIC",
 647                  table_data->len - madt_start, 3, NULL, NULL);
 648 }
 649
 650 /* FADT */
 651 static void build_fadt(GArray *table_data, BIOSLinker *linker,
 652                        VirtMachineState *vms, unsigned dsdt_tbl_offset)
 653 {
 654     AcpiFadtDescriptorRev5_1 *fadt = acpi_data_push(table_data, sizeof(*fadt));
 655     unsigned xdsdt_entry_offset = (char *)&fadt->x_dsdt - table_data->data;
 656     uint16_t bootflags;
 657
 658     switch (vms->psci_conduit) {
 659     case QEMU_PSCI_CONDUIT_DISABLED:
 660         bootflags = 0;
 661         break;
 662     case QEMU_PSCI_CONDUIT_HVC:
 663         bootflags = ACPI_FADT_ARM_PSCI_COMPLIANT | ACPI_FADT_ARM_PSCI_USE_HVC;
 664         break;
 665     case QEMU_PSCI_CONDUIT_SMC:
 666         bootflags = ACPI_FADT_ARM_PSCI_COMPLIANT;
 667         break;
 668     default:
 669         g_assert_not_reached();
 670     }
 671
 672     /* Hardware Reduced = 1 and use PSCI 0.2+ */
 673     fadt->flags = cpu_to_le32(1 << ACPI_FADT_F_HW_REDUCED_ACPI);
 674     fadt->arm_boot_flags = cpu_to_le16(bootflags);
 675
 676     /* ACPI v5.1 (fadt->revision.fadt->minor_revision) */
 677     fadt->minor_revision = 0x1;
 678
 679     /* DSDT address to be filled by Guest linker */
 680     bios_linker_loader_add_pointer(linker,
 681         ACPI_BUILD_TABLE_FILE, xdsdt_entry_offset, sizeof(fadt->x_dsdt),
 682         ACPI_BUILD_TABLE_FILE, dsdt_tbl_offset);
 683
 684     build_header(linker, table_data,
 685                  (void *)fadt, "FACP", sizeof(*fadt), 5, NULL, NULL);
 686 }
 687
 688 /* DSDT */
 689 static void
 690 build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
 691 {
 692     Aml *scope, *dsdt;
 693     const MemMapEntry *memmap = vms->memmap;
 694     const int *irqmap = vms->irqmap;
 695
 696     dsdt = init_aml_allocator();
 697     /* Reserve space for header */
 698     acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
 699
 700     /* When booting the VM with UEFI, UEFI takes ownership of the RTC hardware.
 701      * While UEFI can use libfdt to disable the RTC device node in the DTB that
 702      * it passes to the OS, it cannot modify AML. Therefore, we won't generate
 703      * the RTC ACPI device at all when using UEFI.
 704      */
 705     scope = aml_scope("\\_SB");
 706     acpi_dsdt_add_cpus(scope, vms->smp_cpus);
 707     acpi_dsdt_add_uart(scope, &memmap[VIRT_UART],
 708                        (irqmap[VIRT_UART] + ARM_SPI_BASE));
 709     acpi_dsdt_add_flash(scope, &memmap[VIRT_FLASH]);
 710     acpi_dsdt_add_fw_cfg(scope, &memmap[VIRT_FW_CFG]);
 711     acpi_dsdt_add_virtio(scope, &memmap[VIRT_MMIO],
 712                     (irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS);
 713     acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE),
 714                       vms->highmem);
 715     acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO],
 716                        (irqmap[VIRT_GPIO] + ARM_SPI_BASE));
 717     acpi_dsdt_add_power_button(scope);
 718
 719     aml_append(dsdt, scope);
 720
 721     /* copy AML table into ACPI tables blob and patch header there */
 722     g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
 723     build_header(linker, table_data,
 724         (void *)(table_data->data + table_data->len - dsdt->buf->len),
 725         "DSDT", dsdt->buf->len, 2, NULL, NULL);
 726     free_aml_allocator();
 727 }
 728
 729 typedef
 730 struct AcpiBuildState {
 731     /* Copy of table in RAM (for patching). */
 732     MemoryRegion *table_mr;
 733     MemoryRegion *rsdp_mr;
 734     MemoryRegion *linker_mr;
 735     /* Is table patched? */
 736     bool patched;
 737 } AcpiBuildState;
 738
 739 static
 740 void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
 741 {
 742     VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
 743     GArray *table_offsets;
 744     unsigned dsdt, xsdt;
 745     GArray *tables_blob = tables->table_data;
 746
 747     table_offsets = g_array_new(false, true /* clear */,
 748                                         sizeof(uint32_t));
 749
 750     bios_linker_loader_alloc(tables->linker,
 751                              ACPI_BUILD_TABLE_FILE, tables_blob,
 752                              64, false /* high memory */);
 753
 754     /* DSDT is pointed to by FADT */
 755     dsdt = tables_blob->len;
 756     build_dsdt(tables_blob, tables->linker, vms);
 757
 758     /* FADT MADT GTDT MCFG SPCR pointed to by RSDT */
 759     acpi_add_table(table_offsets, tables_blob);
 760     build_fadt(tables_blob, tables->linker, vms, dsdt);
 761
 762     acpi_add_table(table_offsets, tables_blob);
 763     build_madt(tables_blob, tables->linker, vms);
 764
 765     acpi_add_table(table_offsets, tables_blob);
 766     build_gtdt(tables_blob, tables->linker, vms);
 767
 768     acpi_add_table(table_offsets, tables_blob);
 769     build_mcfg(tables_blob, tables->linker, vms);
 770
 771     acpi_add_table(table_offsets, tables_blob);
 772     build_spcr(tables_blob, tables->linker, vms);
 773
 774     if (nb_numa_nodes > 0) {
 775         acpi_add_table(table_offsets, tables_blob);
 776         build_srat(tables_blob, tables->linker, vms);
 777         if (have_numa_distance) {
 778             acpi_add_table(table_offsets, tables_blob);
 779             build_slit(tables_blob, tables->linker);
 780         }
 781     }
 782
 783     if (its_class_name() && !vmc->no_its) {
 784         acpi_add_table(table_offsets, tables_blob);
 785         build_iort(tables_blob, tables->linker);
 786     }
 787
 788     /* XSDT is pointed to by RSDP */
 789     xsdt = tables_blob->len;
 790     build_xsdt(tables_blob, tables->linker, table_offsets, NULL, NULL);
 791
 792     /* RSDP is in FSEG memory, so allocate it separately */
 793     build_rsdp(tables->rsdp, tables->linker, xsdt);
 794
 795     /* Cleanup memory that's no longer used. */
 796     g_array_free(table_offsets, true);
 797 }
 798
 799 static void acpi_ram_update(MemoryRegion *mr, GArray *data)
 800 {
 801     uint32_t size = acpi_data_len(data);
 802
 803     /* Make sure RAM size is correct - in case it got changed
 804      * e.g. by migration */
 805     memory_region_ram_resize(mr, size, &error_abort);
 806
 807     memcpy(memory_region_get_ram_ptr(mr), data->data, size);
 808     memory_region_set_dirty(mr, 0, size);
 809 }
 810
 811 static void virt_acpi_build_update(void *build_opaque)
 812 {
 813     AcpiBuildState *build_state = build_opaque;
 814     AcpiBuildTables tables;
 815
 816     /* No state to update or already patched? Nothing to do. */
 817     if (!build_state || build_state->patched) {
 818         return;
 819     }
 820     build_state->patched = true;
 821
 822     acpi_build_tables_init(&tables);
 823
 824     virt_acpi_build(VIRT_MACHINE(qdev_get_machine()), &tables);
 825
 826     acpi_ram_update(build_state->table_mr, tables.table_data);
 827     acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
 828     acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob);
 829
 830     acpi_build_tables_cleanup(&tables, true);
 831 }
 832
 833 static void virt_acpi_build_reset(void *build_opaque)
 834 {
 835     AcpiBuildState *build_state = build_opaque;
 836     build_state->patched = false;
 837 }
 838
 839 static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state,
 840                                        GArray *blob, const char *name,
 841                                        uint64_t max_size)
 842 {
 843     return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
 844                         name, virt_acpi_build_update, build_state, NULL, true);
 845 }
 846
 847 static const VMStateDescription vmstate_virt_acpi_build = {
 848     .name = "virt_acpi_build",
 849     .version_id = 1,
 850     .minimum_version_id = 1,
 851     .fields = (VMStateField[]) {
 852         VMSTATE_BOOL(patched, AcpiBuildState),
 853         VMSTATE_END_OF_LIST()
 854     },
 855 };
 856
 857 void virt_acpi_setup(VirtMachineState *vms)
 858 {
 859     AcpiBuildTables tables;
 860     AcpiBuildState *build_state;
 861
 862     if (!vms->fw_cfg) {
 863         trace_virt_acpi_setup();
 864         return;
 865     }
 866
 867     if (!acpi_enabled) {
 868         trace_virt_acpi_setup();
 869         return;
 870     }
 871
 872     build_state = g_malloc0(sizeof *build_state);
 873
 874     acpi_build_tables_init(&tables);
 875     virt_acpi_build(vms, &tables);
 876
 877     /* Now expose it all to Guest */
 878     build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data,
 879                                                ACPI_BUILD_TABLE_FILE,
 880                                                ACPI_BUILD_TABLE_MAX_SIZE);
 881     assert(build_state->table_mr != NULL);
 882
 883     build_state->linker_mr =
 884         acpi_add_rom_blob(build_state, tables.linker->cmd_blob,
 885                           "etc/table-loader", 0);
 886
 887     fw_cfg_add_file(vms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data,
 888                     acpi_data_len(tables.tcpalog));
 889
 890     build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp,
 891                                               ACPI_BUILD_RSDP_FILE, 0);
 892
 893     qemu_register_reset(virt_acpi_build_reset, build_state);
 894     virt_acpi_build_reset(build_state);
 895     vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state);
 896
 897     /* Cleanup tables but don't free the memory: we track it
 898      * in build_state.
 899      */
 900     acpi_build_tables_cleanup(&tables, false);
 901 }