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-common.h"
  30 #include "hw/arm/virt-acpi-build.h"
  31 #include "qemu/bitmap.h"
  32 #include "trace.h"
  33 #include "qom/cpu.h"
  34 #include "target-arm/cpu.h"
  35 #include "hw/acpi/acpi-defs.h"
  36 #include "hw/acpi/acpi.h"
  37 #include "hw/nvram/fw_cfg.h"
  38 #include "hw/acpi/bios-linker-loader.h"
  39 #include "hw/loader.h"
  40 #include "hw/hw.h"
  41 #include "hw/acpi/aml-build.h"
  42 #include "hw/pci/pcie_host.h"
  43 #include "hw/pci/pci.h"
  44
  45 #define ARM_SPI_BASE 32
  46
  47 typedef struct VirtAcpiCpuInfo {
  48     DECLARE_BITMAP(found_cpus, VIRT_ACPI_CPU_ID_LIMIT);
  49 } VirtAcpiCpuInfo;
  50
  51 static void virt_acpi_get_cpu_info(VirtAcpiCpuInfo *cpuinfo)
  52 {
  53     CPUState *cpu;
  54
  55     memset(cpuinfo->found_cpus, 0, sizeof cpuinfo->found_cpus);
  56     CPU_FOREACH(cpu) {
  57         set_bit(cpu->cpu_index, cpuinfo->found_cpus);
  58     }
  59 }
  60
  61 static void acpi_dsdt_add_cpus(Aml *scope, int smp_cpus)
  62 {
  63     uint16_t i;
  64
  65     for (i = 0; i < smp_cpus; i++) {
  66         Aml *dev = aml_device("C%03x", i);
  67         aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
  68         aml_append(dev, aml_name_decl("_UID", aml_int(i)));
  69         aml_append(scope, dev);
  70     }
  71 }
  72
  73 static void acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap,
  74                                            int uart_irq)
  75 {
  76     Aml *dev = aml_device("COM0");
  77     aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0011")));
  78     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
  79
  80     Aml *crs = aml_resource_template();
  81     aml_append(crs, aml_memory32_fixed(uart_memmap->base,
  82                                        uart_memmap->size, AML_READ_WRITE));
  83     aml_append(crs,
  84                aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
  85                              AML_EXCLUSIVE, uart_irq));
  86     aml_append(dev, aml_name_decl("_CRS", crs));
  87
  88     /* The _ADR entry is used to link this device to the UART described
  89      * in the SPCR table, i.e. SPCR.base_address.address == _ADR.
  90      */
  91     aml_append(dev, aml_name_decl("_ADR", aml_int(uart_memmap->base)));
  92
  93     aml_append(scope, dev);
  94 }
  95
  96 static void acpi_dsdt_add_rtc(Aml *scope, const MemMapEntry *rtc_memmap,
  97                                           int rtc_irq)
  98 {
  99     Aml *dev = aml_device("RTC0");
 100     aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0013")));
 101     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 102
 103     Aml *crs = aml_resource_template();
 104     aml_append(crs, aml_memory32_fixed(rtc_memmap->base,
 105                                        rtc_memmap->size, AML_READ_WRITE));
 106     aml_append(crs,
 107                aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 108                              AML_EXCLUSIVE, rtc_irq));
 109     aml_append(dev, aml_name_decl("_CRS", crs));
 110     aml_append(scope, dev);
 111 }
 112
 113 static void acpi_dsdt_add_flash(Aml *scope, const MemMapEntry *flash_memmap)
 114 {
 115     Aml *dev, *crs;
 116     hwaddr base = flash_memmap->base;
 117     hwaddr size = flash_memmap->size / 2;
 118
 119     dev = aml_device("FLS0");
 120     aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
 121     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 122
 123     crs = aml_resource_template();
 124     aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
 125     aml_append(dev, aml_name_decl("_CRS", crs));
 126     aml_append(scope, dev);
 127
 128     dev = aml_device("FLS1");
 129     aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
 130     aml_append(dev, aml_name_decl("_UID", aml_int(1)));
 131     crs = aml_resource_template();
 132     aml_append(crs, aml_memory32_fixed(base + size, size, AML_READ_WRITE));
 133     aml_append(dev, aml_name_decl("_CRS", crs));
 134     aml_append(scope, dev);
 135 }
 136
 137 static void acpi_dsdt_add_virtio(Aml *scope,
 138                                  const MemMapEntry *virtio_mmio_memmap,
 139                                  int mmio_irq, int num)
 140 {
 141     hwaddr base = virtio_mmio_memmap->base;
 142     hwaddr size = virtio_mmio_memmap->size;
 143     int irq = mmio_irq;
 144     int i;
 145
 146     for (i = 0; i < num; i++) {
 147         Aml *dev = aml_device("VR%02u", i);
 148         aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
 149         aml_append(dev, aml_name_decl("_UID", aml_int(i)));
 150
 151         Aml *crs = aml_resource_template();
 152         aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
 153         aml_append(crs,
 154                    aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 155                                  AML_EXCLUSIVE, irq + i));
 156         aml_append(dev, aml_name_decl("_CRS", crs));
 157         aml_append(scope, dev);
 158         base += size;
 159     }
 160 }
 161
 162 static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap, int irq,
 163                               bool use_highmem)
 164 {
 165     Aml *method, *crs, *ifctx, *UUID, *ifctx1, *elsectx, *buf;
 166     int i, bus_no;
 167     hwaddr base_mmio = memmap[VIRT_PCIE_MMIO].base;
 168     hwaddr size_mmio = memmap[VIRT_PCIE_MMIO].size;
 169     hwaddr base_pio = memmap[VIRT_PCIE_PIO].base;
 170     hwaddr size_pio = memmap[VIRT_PCIE_PIO].size;
 171     hwaddr base_ecam = memmap[VIRT_PCIE_ECAM].base;
 172     hwaddr size_ecam = memmap[VIRT_PCIE_ECAM].size;
 173     int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
 174
 175     Aml *dev = aml_device("%s", "PCI0");
 176     aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
 177     aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
 178     aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
 179     aml_append(dev, aml_name_decl("_BBN", aml_int(0)));
 180     aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
 181     aml_append(dev, aml_name_decl("_UID", aml_string("PCI0")));
 182     aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device")));
 183     aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
 184
 185     /* Declare the PCI Routing Table. */
 186     Aml *rt_pkg = aml_package(nr_pcie_buses * PCI_NUM_PINS);
 187     for (bus_no = 0; bus_no < nr_pcie_buses; bus_no++) {
 188         for (i = 0; i < PCI_NUM_PINS; i++) {
 189             int gsi = (i + bus_no) % PCI_NUM_PINS;
 190             Aml *pkg = aml_package(4);
 191             aml_append(pkg, aml_int((bus_no << 16) | 0xFFFF));
 192             aml_append(pkg, aml_int(i));
 193             aml_append(pkg, aml_name("GSI%d", gsi));
 194             aml_append(pkg, aml_int(0));
 195             aml_append(rt_pkg, pkg);
 196         }
 197     }
 198     aml_append(dev, aml_name_decl("_PRT", rt_pkg));
 199
 200     /* Create GSI link device */
 201     for (i = 0; i < PCI_NUM_PINS; i++) {
 202         Aml *dev_gsi = aml_device("GSI%d", i);
 203         aml_append(dev_gsi, aml_name_decl("_HID", aml_string("PNP0C0F")));
 204         aml_append(dev_gsi, aml_name_decl("_UID", aml_int(0)));
 205         crs = aml_resource_template();
 206         aml_append(crs,
 207                    aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 208                                  AML_EXCLUSIVE, irq + i));
 209         aml_append(dev_gsi, aml_name_decl("_PRS", crs));
 210         crs = aml_resource_template();
 211         aml_append(crs,
 212                    aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 213                                  AML_EXCLUSIVE, irq + i));
 214         aml_append(dev_gsi, aml_name_decl("_CRS", crs));
 215         method = aml_method("_SRS", 1);
 216         aml_append(dev_gsi, method);
 217         aml_append(dev, dev_gsi);
 218     }
 219
 220     method = aml_method("_CBA", 0);
 221     aml_append(method, aml_return(aml_int(base_ecam)));
 222     aml_append(dev, method);
 223
 224     method = aml_method("_CRS", 0);
 225     Aml *rbuf = aml_resource_template();
 226     aml_append(rbuf,
 227         aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
 228                             0x0000, 0x0000, nr_pcie_buses - 1, 0x0000,
 229                             nr_pcie_buses));
 230     aml_append(rbuf,
 231         aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
 232                          AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000, base_mmio,
 233                          base_mmio + size_mmio - 1, 0x0000, size_mmio));
 234     aml_append(rbuf,
 235         aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
 236                      AML_ENTIRE_RANGE, 0x0000, 0x0000, size_pio - 1, base_pio,
 237                      size_pio));
 238
 239     if (use_highmem) {
 240         hwaddr base_mmio_high = memmap[VIRT_PCIE_MMIO_HIGH].base;
 241         hwaddr size_mmio_high = memmap[VIRT_PCIE_MMIO_HIGH].size;
 242
 243         aml_append(rbuf,
 244             aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
 245                              AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
 246                              base_mmio_high, base_mmio_high, 0x0000,
 247                              size_mmio_high));
 248     }
 249
 250     aml_append(method, aml_name_decl("RBUF", rbuf));
 251     aml_append(method, aml_return(rbuf));
 252     aml_append(dev, method);
 253
 254     /* Declare an _OSC (OS Control Handoff) method */
 255     aml_append(dev, aml_name_decl("SUPP", aml_int(0)));
 256     aml_append(dev, aml_name_decl("CTRL", aml_int(0)));
 257     method = aml_method("_OSC", 4);
 258     aml_append(method,
 259         aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
 260
 261     /* PCI Firmware Specification 3.0
 262      * 4.5.1. _OSC Interface for PCI Host Bridge Devices
 263      * The _OSC interface for a PCI/PCI-X/PCI Express hierarchy is
 264      * identified by the Universal Unique IDentifier (UUID)
 265      * 33DB4D5B-1FF7-401C-9657-7441C03DD766
 266      */
 267     UUID = aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766");
 268     ifctx = aml_if(aml_equal(aml_arg(0), UUID));
 269     aml_append(ifctx,
 270         aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
 271     aml_append(ifctx,
 272         aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
 273     aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP")));
 274     aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL")));
 275     aml_append(ifctx, aml_store(aml_and(aml_name("CTRL"), aml_int(0x1D)),
 276                                 aml_name("CTRL")));
 277
 278     ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
 279     aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x08)),
 280                                  aml_name("CDW1")));
 281     aml_append(ifctx, ifctx1);
 282
 283     ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL"))));
 284     aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x10)),
 285                                  aml_name("CDW1")));
 286     aml_append(ifctx, ifctx1);
 287
 288     aml_append(ifctx, aml_store(aml_name("CTRL"), aml_name("CDW3")));
 289     aml_append(ifctx, aml_return(aml_arg(3)));
 290     aml_append(method, ifctx);
 291
 292     elsectx = aml_else();
 293     aml_append(elsectx, aml_store(aml_or(aml_name("CDW1"), aml_int(4)),
 294                                   aml_name("CDW1")));
 295     aml_append(elsectx, aml_return(aml_arg(3)));
 296     aml_append(method, elsectx);
 297     aml_append(dev, method);
 298
 299     method = aml_method("_DSM", 4);
 300
 301     /* PCI Firmware Specification 3.0
 302      * 4.6.1. _DSM for PCI Express Slot Information
 303      * The UUID in _DSM in this context is
 304      * {E5C937D0-3553-4D7A-9117-EA4D19C3434D}
 305      */
 306     UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
 307     ifctx = aml_if(aml_equal(aml_arg(0), UUID));
 308     ifctx1 = aml_if(aml_equal(aml_arg(2), aml_int(0)));
 309     uint8_t byte_list[1] = {1};
 310     buf = aml_buffer(1, byte_list);
 311     aml_append(ifctx1, aml_return(buf));
 312     aml_append(ifctx, ifctx1);
 313     aml_append(method, ifctx);
 314
 315     byte_list[0] = 0;
 316     buf = aml_buffer(1, byte_list);
 317     aml_append(method, aml_return(buf));
 318     aml_append(dev, method);
 319
 320     Aml *dev_rp0 = aml_device("%s", "RP0");
 321     aml_append(dev_rp0, aml_name_decl("_ADR", aml_int(0)));
 322     aml_append(dev, dev_rp0);
 323     aml_append(scope, dev);
 324 }
 325
 326 /* RSDP */
 327 static GArray *
 328 build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
 329 {
 330     AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
 331
 332     bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 16,
 333                              true /* fseg memory */);
 334
 335     memcpy(&rsdp->signature, "RSD PTR ", sizeof(rsdp->signature));
 336     memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, sizeof(rsdp->oem_id));
 337     rsdp->length = cpu_to_le32(sizeof(*rsdp));
 338     rsdp->revision = 0x02;
 339
 340     /* Point to RSDT */
 341     rsdp->rsdt_physical_address = cpu_to_le32(rsdt);
 342     /* Address to be filled by Guest linker */
 343     bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE,
 344                                    ACPI_BUILD_TABLE_FILE,
 345                                    rsdp_table, &rsdp->rsdt_physical_address,
 346                                    sizeof rsdp->rsdt_physical_address);
 347     rsdp->checksum = 0;
 348     /* Checksum to be filled by Guest linker */
 349     bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
 350                                     rsdp, rsdp, sizeof *rsdp, &rsdp->checksum);
 351
 352     return rsdp_table;
 353 }
 354
 355 static void
 356 build_spcr(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
 357 {
 358     AcpiSerialPortConsoleRedirection *spcr;
 359     const MemMapEntry *uart_memmap = &guest_info->memmap[VIRT_UART];
 360     int irq = guest_info->irqmap[VIRT_UART] + ARM_SPI_BASE;
 361
 362     spcr = acpi_data_push(table_data, sizeof(*spcr));
 363
 364     spcr->interface_type = 0x3;    /* ARM PL011 UART */
 365
 366     spcr->base_address.space_id = AML_SYSTEM_MEMORY;
 367     spcr->base_address.bit_width = 8;
 368     spcr->base_address.bit_offset = 0;
 369     spcr->base_address.access_width = 1;
 370     spcr->base_address.address = cpu_to_le64(uart_memmap->base);
 371
 372     spcr->interrupt_types = (1 << 3); /* Bit[3] ARMH GIC interrupt */
 373     spcr->gsi = cpu_to_le32(irq);  /* Global System Interrupt */
 374
 375     spcr->baud = 3;                /* Baud Rate: 3 = 9600 */
 376     spcr->parity = 0;              /* No Parity */
 377     spcr->stopbits = 1;            /* 1 Stop bit */
 378     spcr->flowctrl = (1 << 1);     /* Bit[1] = RTS/CTS hardware flow control */
 379     spcr->term_type = 0;           /* Terminal Type: 0 = VT100 */
 380
 381     spcr->pci_device_id = 0xffff;  /* PCI Device ID: not a PCI device */
 382     spcr->pci_vendor_id = 0xffff;  /* PCI Vendor ID: not a PCI device */
 383
 384     build_header(linker, table_data, (void *)spcr, "SPCR", sizeof(*spcr), 2);
 385 }
 386
 387 static void
 388 build_mcfg(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
 389 {
 390     AcpiTableMcfg *mcfg;
 391     const MemMapEntry *memmap = guest_info->memmap;
 392     int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
 393
 394     mcfg = acpi_data_push(table_data, len);
 395     mcfg->allocation[0].address = cpu_to_le64(memmap[VIRT_PCIE_ECAM].base);
 396
 397     /* Only a single allocation so no need to play with segments */
 398     mcfg->allocation[0].pci_segment = cpu_to_le16(0);
 399     mcfg->allocation[0].start_bus_number = 0;
 400     mcfg->allocation[0].end_bus_number = (memmap[VIRT_PCIE_ECAM].size
 401                                           / PCIE_MMCFG_SIZE_MIN) - 1;
 402
 403     build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1);
 404 }
 405
 406 /* GTDT */
 407 static void
 408 build_gtdt(GArray *table_data, GArray *linker)
 409 {
 410     int gtdt_start = table_data->len;
 411     AcpiGenericTimerTable *gtdt;
 412
 413     gtdt = acpi_data_push(table_data, sizeof *gtdt);
 414     /* The interrupt values are the same with the device tree when adding 16 */
 415     gtdt->secure_el1_interrupt = ARCH_TIMER_S_EL1_IRQ + 16;
 416     gtdt->secure_el1_flags = ACPI_EDGE_SENSITIVE;
 417
 418     gtdt->non_secure_el1_interrupt = ARCH_TIMER_NS_EL1_IRQ + 16;
 419     gtdt->non_secure_el1_flags = ACPI_EDGE_SENSITIVE;
 420
 421     gtdt->virtual_timer_interrupt = ARCH_TIMER_VIRT_IRQ + 16;
 422     gtdt->virtual_timer_flags = ACPI_EDGE_SENSITIVE;
 423
 424     gtdt->non_secure_el2_interrupt = ARCH_TIMER_NS_EL2_IRQ + 16;
 425     gtdt->non_secure_el2_flags = ACPI_EDGE_SENSITIVE;
 426
 427     build_header(linker, table_data,
 428                  (void *)(table_data->data + gtdt_start), "GTDT",
 429                  table_data->len - gtdt_start, 2);
 430 }
 431
 432 /* MADT */
 433 static void
 434 build_madt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info,
 435            VirtAcpiCpuInfo *cpuinfo)
 436 {
 437     int madt_start = table_data->len;
 438     const MemMapEntry *memmap = guest_info->memmap;
 439     const int *irqmap = guest_info->irqmap;
 440     AcpiMultipleApicTable *madt;
 441     AcpiMadtGenericDistributor *gicd;
 442     AcpiMadtGenericMsiFrame *gic_msi;
 443     int i;
 444
 445     madt = acpi_data_push(table_data, sizeof *madt);
 446
 447     gicd = acpi_data_push(table_data, sizeof *gicd);
 448     gicd->type = ACPI_APIC_GENERIC_DISTRIBUTOR;
 449     gicd->length = sizeof(*gicd);
 450     gicd->base_address = memmap[VIRT_GIC_DIST].base;
 451
 452     for (i = 0; i < guest_info->smp_cpus; i++) {
 453         AcpiMadtGenericInterrupt *gicc = acpi_data_push(table_data,
 454                                                      sizeof *gicc);
 455         ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(i));
 456
 457         gicc->type = ACPI_APIC_GENERIC_INTERRUPT;
 458         gicc->length = sizeof(*gicc);
 459         if (guest_info->gic_version == 2) {
 460             gicc->base_address = memmap[VIRT_GIC_CPU].base;
 461         }
 462         gicc->cpu_interface_number = i;
 463         gicc->arm_mpidr = armcpu->mp_affinity;
 464         gicc->uid = i;
 465         if (test_bit(i, cpuinfo->found_cpus)) {
 466             gicc->flags = cpu_to_le32(ACPI_GICC_ENABLED);
 467         }
 468     }
 469
 470     if (guest_info->gic_version == 3) {
 471         AcpiMadtGenericRedistributor *gicr = acpi_data_push(table_data,
 472                                                          sizeof *gicr);
 473
 474         gicr->type = ACPI_APIC_GENERIC_REDISTRIBUTOR;
 475         gicr->length = sizeof(*gicr);
 476         gicr->base_address = cpu_to_le64(memmap[VIRT_GIC_REDIST].base);
 477         gicr->range_length = cpu_to_le32(memmap[VIRT_GIC_REDIST].size);
 478     } else {
 479         gic_msi = acpi_data_push(table_data, sizeof *gic_msi);
 480         gic_msi->type = ACPI_APIC_GENERIC_MSI_FRAME;
 481         gic_msi->length = sizeof(*gic_msi);
 482         gic_msi->gic_msi_frame_id = 0;
 483         gic_msi->base_address = cpu_to_le64(memmap[VIRT_GIC_V2M].base);
 484         gic_msi->flags = cpu_to_le32(1);
 485         gic_msi->spi_count = cpu_to_le16(NUM_GICV2M_SPIS);
 486         gic_msi->spi_base = cpu_to_le16(irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE);
 487     }
 488
 489     build_header(linker, table_data,
 490                  (void *)(table_data->data + madt_start), "APIC",
 491                  table_data->len - madt_start, 3);
 492 }
 493
 494 /* FADT */
 495 static void
 496 build_fadt(GArray *table_data, GArray *linker, unsigned dsdt)
 497 {
 498     AcpiFadtDescriptorRev5_1 *fadt = acpi_data_push(table_data, sizeof(*fadt));
 499
 500     /* Hardware Reduced = 1 and use PSCI 0.2+ and with HVC */
 501     fadt->flags = cpu_to_le32(1 << ACPI_FADT_F_HW_REDUCED_ACPI);
 502     fadt->arm_boot_flags = cpu_to_le16((1 << ACPI_FADT_ARM_USE_PSCI_G_0_2) |
 503                                        (1 << ACPI_FADT_ARM_PSCI_USE_HVC));
 504
 505     /* ACPI v5.1 (fadt->revision.fadt->minor_revision) */
 506     fadt->minor_revision = 0x1;
 507
 508     fadt->dsdt = cpu_to_le32(dsdt);
 509     /* DSDT address to be filled by Guest linker */
 510     bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
 511                                    ACPI_BUILD_TABLE_FILE,
 512                                    table_data, &fadt->dsdt,
 513                                    sizeof fadt->dsdt);
 514
 515     build_header(linker, table_data,
 516                  (void *)fadt, "FACP", sizeof(*fadt), 5);
 517 }
 518
 519 /* DSDT */
 520 static void
 521 build_dsdt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
 522 {
 523     Aml *scope, *dsdt;
 524     const MemMapEntry *memmap = guest_info->memmap;
 525     const int *irqmap = guest_info->irqmap;
 526
 527     dsdt = init_aml_allocator();
 528     /* Reserve space for header */
 529     acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
 530
 531     scope = aml_scope("\\_SB");
 532     acpi_dsdt_add_cpus(scope, guest_info->smp_cpus);
 533     acpi_dsdt_add_uart(scope, &memmap[VIRT_UART],
 534                        (irqmap[VIRT_UART] + ARM_SPI_BASE));
 535     acpi_dsdt_add_rtc(scope, &memmap[VIRT_RTC],
 536                       (irqmap[VIRT_RTC] + ARM_SPI_BASE));
 537     acpi_dsdt_add_flash(scope, &memmap[VIRT_FLASH]);
 538     acpi_dsdt_add_virtio(scope, &memmap[VIRT_MMIO],
 539                     (irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS);
 540     acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE),
 541                       guest_info->use_highmem);
 542
 543     aml_append(dsdt, scope);
 544
 545     /* copy AML table into ACPI tables blob and patch header there */
 546     g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
 547     build_header(linker, table_data,
 548         (void *)(table_data->data + table_data->len - dsdt->buf->len),
 549         "DSDT", dsdt->buf->len, 2);
 550     free_aml_allocator();
 551 }
 552
 553 typedef
 554 struct AcpiBuildState {
 555     /* Copy of table in RAM (for patching). */
 556     MemoryRegion *table_mr;
 557     MemoryRegion *rsdp_mr;
 558     MemoryRegion *linker_mr;
 559     /* Is table patched? */
 560     bool patched;
 561     VirtGuestInfo *guest_info;
 562 } AcpiBuildState;
 563
 564 static
 565 void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)
 566 {
 567     GArray *table_offsets;
 568     unsigned dsdt, rsdt;
 569     VirtAcpiCpuInfo cpuinfo;
 570     GArray *tables_blob = tables->table_data;
 571
 572     virt_acpi_get_cpu_info(&cpuinfo);
 573
 574     table_offsets = g_array_new(false, true /* clear */,
 575                                         sizeof(uint32_t));
 576
 577     bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE,
 578                              64, false /* high memory */);
 579
 580     /*
 581      * The ACPI v5.1 tables for Hardware-reduced ACPI platform are:
 582      * RSDP
 583      * RSDT
 584      * FADT
 585      * GTDT
 586      * MADT
 587      * MCFG
 588      * DSDT
 589      */
 590
 591     /* DSDT is pointed to by FADT */
 592     dsdt = tables_blob->len;
 593     build_dsdt(tables_blob, tables->linker, guest_info);
 594
 595     /* FADT MADT GTDT MCFG SPCR pointed to by RSDT */
 596     acpi_add_table(table_offsets, tables_blob);
 597     build_fadt(tables_blob, tables->linker, dsdt);
 598
 599     acpi_add_table(table_offsets, tables_blob);
 600     build_madt(tables_blob, tables->linker, guest_info, &cpuinfo);
 601
 602     acpi_add_table(table_offsets, tables_blob);
 603     build_gtdt(tables_blob, tables->linker);
 604
 605     acpi_add_table(table_offsets, tables_blob);
 606     build_mcfg(tables_blob, tables->linker, guest_info);
 607
 608     acpi_add_table(table_offsets, tables_blob);
 609     build_spcr(tables_blob, tables->linker, guest_info);
 610
 611     /* RSDT is pointed to by RSDP */
 612     rsdt = tables_blob->len;
 613     build_rsdt(tables_blob, tables->linker, table_offsets);
 614
 615     /* RSDP is in FSEG memory, so allocate it separately */
 616     build_rsdp(tables->rsdp, tables->linker, rsdt);
 617
 618     /* Cleanup memory that's no longer used. */
 619     g_array_free(table_offsets, true);
 620 }
 621
 622 static void acpi_ram_update(MemoryRegion *mr, GArray *data)
 623 {
 624     uint32_t size = acpi_data_len(data);
 625
 626     /* Make sure RAM size is correct - in case it got changed
 627      * e.g. by migration */
 628     memory_region_ram_resize(mr, size, &error_abort);
 629
 630     memcpy(memory_region_get_ram_ptr(mr), data->data, size);
 631     memory_region_set_dirty(mr, 0, size);
 632 }
 633
 634 static void virt_acpi_build_update(void *build_opaque, uint32_t offset)
 635 {
 636     AcpiBuildState *build_state = build_opaque;
 637     AcpiBuildTables tables;
 638
 639     /* No state to update or already patched? Nothing to do. */
 640     if (!build_state || build_state->patched) {
 641         return;
 642     }
 643     build_state->patched = true;
 644
 645     acpi_build_tables_init(&tables);
 646
 647     virt_acpi_build(build_state->guest_info, &tables);
 648
 649     acpi_ram_update(build_state->table_mr, tables.table_data);
 650     acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
 651     acpi_ram_update(build_state->linker_mr, tables.linker);
 652
 653
 654     acpi_build_tables_cleanup(&tables, true);
 655 }
 656
 657 static void virt_acpi_build_reset(void *build_opaque)
 658 {
 659     AcpiBuildState *build_state = build_opaque;
 660     build_state->patched = false;
 661 }
 662
 663 static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state,
 664                                        GArray *blob, const char *name,
 665                                        uint64_t max_size)
 666 {
 667     return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
 668                         name, virt_acpi_build_update, build_state);
 669 }
 670
 671 static const VMStateDescription vmstate_virt_acpi_build = {
 672     .name = "virt_acpi_build",
 673     .version_id = 1,
 674     .minimum_version_id = 1,
 675     .fields = (VMStateField[]) {
 676         VMSTATE_BOOL(patched, AcpiBuildState),
 677         VMSTATE_END_OF_LIST()
 678     },
 679 };
 680
 681 void virt_acpi_setup(VirtGuestInfo *guest_info)
 682 {
 683     AcpiBuildTables tables;
 684     AcpiBuildState *build_state;
 685
 686     if (!guest_info->fw_cfg) {
 687         trace_virt_acpi_setup();
 688         return;
 689     }
 690
 691     if (!acpi_enabled) {
 692         trace_virt_acpi_setup();
 693         return;
 694     }
 695
 696     build_state = g_malloc0(sizeof *build_state);
 697     build_state->guest_info = guest_info;
 698
 699     acpi_build_tables_init(&tables);
 700     virt_acpi_build(build_state->guest_info, &tables);
 701
 702     /* Now expose it all to Guest */
 703     build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data,
 704                                                ACPI_BUILD_TABLE_FILE,
 705                                                ACPI_BUILD_TABLE_MAX_SIZE);
 706     assert(build_state->table_mr != NULL);
 707
 708     build_state->linker_mr =
 709         acpi_add_rom_blob(build_state, tables.linker, "etc/table-loader", 0);
 710
 711     fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
 712                     tables.tcpalog->data, acpi_data_len(tables.tcpalog));
 713
 714     build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp,
 715                                               ACPI_BUILD_RSDP_FILE, 0);
 716
 717     qemu_register_reset(virt_acpi_build_reset, build_state);
 718     virt_acpi_build_reset(build_state);
 719     vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state);
 720
 721     /* Cleanup tables but don't free the memory: we track it
 722      * in build_state.
 723      */
 724     acpi_build_tables_cleanup(&tables, false);
 725 }