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 #define ACPI_POWER_BUTTON_DEVICE "PWRB"
  47
  48 typedef struct VirtAcpiCpuInfo {
  49     DECLARE_BITMAP(found_cpus, VIRT_ACPI_CPU_ID_LIMIT);
  50 } VirtAcpiCpuInfo;
  51
  52 static void virt_acpi_get_cpu_info(VirtAcpiCpuInfo *cpuinfo)
  53 {
  54     CPUState *cpu;
  55
  56     memset(cpuinfo->found_cpus, 0, sizeof cpuinfo->found_cpus);
  57     CPU_FOREACH(cpu) {
  58         set_bit(cpu->cpu_index, cpuinfo->found_cpus);
  59     }
  60 }
  61
  62 static void acpi_dsdt_add_cpus(Aml *scope, int smp_cpus)
  63 {
  64     uint16_t i;
  65
  66     for (i = 0; i < smp_cpus; i++) {
  67         Aml *dev = aml_device("C%03x", i);
  68         aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
  69         aml_append(dev, aml_name_decl("_UID", aml_int(i)));
  70         aml_append(scope, dev);
  71     }
  72 }
  73
  74 static void acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap,
  75                                            uint32_t uart_irq)
  76 {
  77     Aml *dev = aml_device("COM0");
  78     aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0011")));
  79     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
  80
  81     Aml *crs = aml_resource_template();
  82     aml_append(crs, aml_memory32_fixed(uart_memmap->base,
  83                                        uart_memmap->size, AML_READ_WRITE));
  84     aml_append(crs,
  85                aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
  86                              AML_EXCLUSIVE, &uart_irq, 1));
  87     aml_append(dev, aml_name_decl("_CRS", crs));
  88
  89     /* The _ADR entry is used to link this device to the UART described
  90      * in the SPCR table, i.e. SPCR.base_address.address == _ADR.
  91      */
  92     aml_append(dev, aml_name_decl("_ADR", aml_int(uart_memmap->base)));
  93
  94     aml_append(scope, dev);
  95 }
  96
  97 static void acpi_dsdt_add_rtc(Aml *scope, const MemMapEntry *rtc_memmap,
  98                                           uint32_t rtc_irq)
  99 {
 100     Aml *dev = aml_device("RTC0");
 101     aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0013")));
 102     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 103
 104     Aml *crs = aml_resource_template();
 105     aml_append(crs, aml_memory32_fixed(rtc_memmap->base,
 106                                        rtc_memmap->size, AML_READ_WRITE));
 107     aml_append(crs,
 108                aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 109                              AML_EXCLUSIVE, &rtc_irq, 1));
 110     aml_append(dev, aml_name_decl("_CRS", crs));
 111     aml_append(scope, dev);
 112 }
 113
 114 static void acpi_dsdt_add_flash(Aml *scope, const MemMapEntry *flash_memmap)
 115 {
 116     Aml *dev, *crs;
 117     hwaddr base = flash_memmap->base;
 118     hwaddr size = flash_memmap->size / 2;
 119
 120     dev = aml_device("FLS0");
 121     aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
 122     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 123
 124     crs = aml_resource_template();
 125     aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
 126     aml_append(dev, aml_name_decl("_CRS", crs));
 127     aml_append(scope, dev);
 128
 129     dev = aml_device("FLS1");
 130     aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
 131     aml_append(dev, aml_name_decl("_UID", aml_int(1)));
 132     crs = aml_resource_template();
 133     aml_append(crs, aml_memory32_fixed(base + size, size, AML_READ_WRITE));
 134     aml_append(dev, aml_name_decl("_CRS", crs));
 135     aml_append(scope, dev);
 136 }
 137
 138 static void acpi_dsdt_add_virtio(Aml *scope,
 139                                  const MemMapEntry *virtio_mmio_memmap,
 140                                  uint32_t mmio_irq, int num)
 141 {
 142     hwaddr base = virtio_mmio_memmap->base;
 143     hwaddr size = virtio_mmio_memmap->size;
 144     int i;
 145
 146     for (i = 0; i < num; i++) {
 147         uint32_t irq = mmio_irq + i;
 148         Aml *dev = aml_device("VR%02u", i);
 149         aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
 150         aml_append(dev, aml_name_decl("_UID", aml_int(i)));
 151
 152         Aml *crs = aml_resource_template();
 153         aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
 154         aml_append(crs,
 155                    aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 156                                  AML_EXCLUSIVE, &irq, 1));
 157         aml_append(dev, aml_name_decl("_CRS", crs));
 158         aml_append(scope, dev);
 159         base += size;
 160     }
 161 }
 162
 163 static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
 164                               uint32_t irq, bool use_highmem)
 165 {
 166     Aml *method, *crs, *ifctx, *UUID, *ifctx1, *elsectx, *buf;
 167     int i, bus_no;
 168     hwaddr base_mmio = memmap[VIRT_PCIE_MMIO].base;
 169     hwaddr size_mmio = memmap[VIRT_PCIE_MMIO].size;
 170     hwaddr base_pio = memmap[VIRT_PCIE_PIO].base;
 171     hwaddr size_pio = memmap[VIRT_PCIE_PIO].size;
 172     hwaddr base_ecam = memmap[VIRT_PCIE_ECAM].base;
 173     hwaddr size_ecam = memmap[VIRT_PCIE_ECAM].size;
 174     int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
 175
 176     Aml *dev = aml_device("%s", "PCI0");
 177     aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
 178     aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
 179     aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
 180     aml_append(dev, aml_name_decl("_BBN", aml_int(0)));
 181     aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
 182     aml_append(dev, aml_name_decl("_UID", aml_string("PCI0")));
 183     aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device")));
 184     aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
 185
 186     /* Declare the PCI Routing Table. */
 187     Aml *rt_pkg = aml_package(nr_pcie_buses * PCI_NUM_PINS);
 188     for (bus_no = 0; bus_no < nr_pcie_buses; bus_no++) {
 189         for (i = 0; i < PCI_NUM_PINS; i++) {
 190             int gsi = (i + bus_no) % PCI_NUM_PINS;
 191             Aml *pkg = aml_package(4);
 192             aml_append(pkg, aml_int((bus_no << 16) | 0xFFFF));
 193             aml_append(pkg, aml_int(i));
 194             aml_append(pkg, aml_name("GSI%d", gsi));
 195             aml_append(pkg, aml_int(0));
 196             aml_append(rt_pkg, pkg);
 197         }
 198     }
 199     aml_append(dev, aml_name_decl("_PRT", rt_pkg));
 200
 201     /* Create GSI link device */
 202     for (i = 0; i < PCI_NUM_PINS; i++) {
 203         uint32_t irqs =  irq + i;
 204         Aml *dev_gsi = aml_device("GSI%d", i);
 205         aml_append(dev_gsi, aml_name_decl("_HID", aml_string("PNP0C0F")));
 206         aml_append(dev_gsi, aml_name_decl("_UID", aml_int(0)));
 207         crs = aml_resource_template();
 208         aml_append(crs,
 209                    aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 210                                  AML_EXCLUSIVE, &irqs, 1));
 211         aml_append(dev_gsi, aml_name_decl("_PRS", crs));
 212         crs = aml_resource_template();
 213         aml_append(crs,
 214                    aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 215                                  AML_EXCLUSIVE, &irqs, 1));
 216         aml_append(dev_gsi, aml_name_decl("_CRS", crs));
 217         method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
 218         aml_append(dev_gsi, method);
 219         aml_append(dev, dev_gsi);
 220     }
 221
 222     method = aml_method("_CBA", 0, AML_NOTSERIALIZED);
 223     aml_append(method, aml_return(aml_int(base_ecam)));
 224     aml_append(dev, method);
 225
 226     method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
 227     Aml *rbuf = aml_resource_template();
 228     aml_append(rbuf,
 229         aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
 230                             0x0000, 0x0000, nr_pcie_buses - 1, 0x0000,
 231                             nr_pcie_buses));
 232     aml_append(rbuf,
 233         aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
 234                          AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000, base_mmio,
 235                          base_mmio + size_mmio - 1, 0x0000, size_mmio));
 236     aml_append(rbuf,
 237         aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
 238                      AML_ENTIRE_RANGE, 0x0000, 0x0000, size_pio - 1, base_pio,
 239                      size_pio));
 240
 241     if (use_highmem) {
 242         hwaddr base_mmio_high = memmap[VIRT_PCIE_MMIO_HIGH].base;
 243         hwaddr size_mmio_high = memmap[VIRT_PCIE_MMIO_HIGH].size;
 244
 245         aml_append(rbuf,
 246             aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
 247                              AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
 248                              base_mmio_high, base_mmio_high, 0x0000,
 249                              size_mmio_high));
 250     }
 251
 252     aml_append(method, aml_name_decl("RBUF", rbuf));
 253     aml_append(method, aml_return(rbuf));
 254     aml_append(dev, method);
 255
 256     /* Declare an _OSC (OS Control Handoff) method */
 257     aml_append(dev, aml_name_decl("SUPP", aml_int(0)));
 258     aml_append(dev, aml_name_decl("CTRL", aml_int(0)));
 259     method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
 260     aml_append(method,
 261         aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
 262
 263     /* PCI Firmware Specification 3.0
 264      * 4.5.1. _OSC Interface for PCI Host Bridge Devices
 265      * The _OSC interface for a PCI/PCI-X/PCI Express hierarchy is
 266      * identified by the Universal Unique IDentifier (UUID)
 267      * 33DB4D5B-1FF7-401C-9657-7441C03DD766
 268      */
 269     UUID = aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766");
 270     ifctx = aml_if(aml_equal(aml_arg(0), UUID));
 271     aml_append(ifctx,
 272         aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
 273     aml_append(ifctx,
 274         aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
 275     aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP")));
 276     aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL")));
 277     aml_append(ifctx, aml_store(aml_and(aml_name("CTRL"), aml_int(0x1D), NULL),
 278                                 aml_name("CTRL")));
 279
 280     ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
 281     aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x08), NULL),
 282                                  aml_name("CDW1")));
 283     aml_append(ifctx, ifctx1);
 284
 285     ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL"))));
 286     aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x10), NULL),
 287                                  aml_name("CDW1")));
 288     aml_append(ifctx, ifctx1);
 289
 290     aml_append(ifctx, aml_store(aml_name("CTRL"), aml_name("CDW3")));
 291     aml_append(ifctx, aml_return(aml_arg(3)));
 292     aml_append(method, ifctx);
 293
 294     elsectx = aml_else();
 295     aml_append(elsectx, aml_store(aml_or(aml_name("CDW1"), aml_int(4), NULL),
 296                                   aml_name("CDW1")));
 297     aml_append(elsectx, aml_return(aml_arg(3)));
 298     aml_append(method, elsectx);
 299     aml_append(dev, method);
 300
 301     method = aml_method("_DSM", 4, AML_NOTSERIALIZED);
 302
 303     /* PCI Firmware Specification 3.0
 304      * 4.6.1. _DSM for PCI Express Slot Information
 305      * The UUID in _DSM in this context is
 306      * {E5C937D0-3553-4D7A-9117-EA4D19C3434D}
 307      */
 308     UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
 309     ifctx = aml_if(aml_equal(aml_arg(0), UUID));
 310     ifctx1 = aml_if(aml_equal(aml_arg(2), aml_int(0)));
 311     uint8_t byte_list[1] = {1};
 312     buf = aml_buffer(1, byte_list);
 313     aml_append(ifctx1, aml_return(buf));
 314     aml_append(ifctx, ifctx1);
 315     aml_append(method, ifctx);
 316
 317     byte_list[0] = 0;
 318     buf = aml_buffer(1, byte_list);
 319     aml_append(method, aml_return(buf));
 320     aml_append(dev, method);
 321
 322     Aml *dev_rp0 = aml_device("%s", "RP0");
 323     aml_append(dev_rp0, aml_name_decl("_ADR", aml_int(0)));
 324     aml_append(dev, dev_rp0);
 325     aml_append(scope, dev);
 326 }
 327
 328 static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
 329                                            uint32_t gpio_irq)
 330 {
 331     Aml *dev = aml_device("GPO0");
 332     aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061")));
 333     aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
 334     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 335
 336     Aml *crs = aml_resource_template();
 337     aml_append(crs, aml_memory32_fixed(gpio_memmap->base, gpio_memmap->size,
 338                                        AML_READ_WRITE));
 339     aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
 340                                   AML_EXCLUSIVE, &gpio_irq, 1));
 341     aml_append(dev, aml_name_decl("_CRS", crs));
 342
 343     Aml *aei = aml_resource_template();
 344     /* Pin 3 for power button */
 345     const uint32_t pin_list[1] = {3};
 346     aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH,
 347                                  AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1,
 348                                  "GPO0", NULL, 0));
 349     aml_append(dev, aml_name_decl("_AEI", aei));
 350
 351     /* _E03 is handle for power button */
 352     Aml *method = aml_method("_E03", 0, AML_NOTSERIALIZED);
 353     aml_append(method, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE),
 354                                   aml_int(0x80)));
 355     aml_append(dev, method);
 356     aml_append(scope, dev);
 357 }
 358
 359 static void acpi_dsdt_add_power_button(Aml *scope)
 360 {
 361     Aml *dev = aml_device(ACPI_POWER_BUTTON_DEVICE);
 362     aml_append(dev, aml_name_decl("_HID", aml_string("PNP0C0C")));
 363     aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
 364     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 365     aml_append(scope, dev);
 366 }
 367
 368 /* RSDP */
 369 static GArray *
 370 build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
 371 {
 372     AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
 373
 374     bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 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     /* Point to RSDT */
 383     rsdp->rsdt_physical_address = cpu_to_le32(rsdt);
 384     /* Address to be filled by Guest linker */
 385     bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE,
 386                                    ACPI_BUILD_TABLE_FILE,
 387                                    rsdp_table, &rsdp->rsdt_physical_address,
 388                                    sizeof rsdp->rsdt_physical_address);
 389     rsdp->checksum = 0;
 390     /* Checksum to be filled by Guest linker */
 391     bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
 392                                     rsdp, rsdp, sizeof *rsdp, &rsdp->checksum);
 393
 394     return rsdp_table;
 395 }
 396
 397 static void
 398 build_spcr(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
 399 {
 400     AcpiSerialPortConsoleRedirection *spcr;
 401     const MemMapEntry *uart_memmap = &guest_info->memmap[VIRT_UART];
 402     int irq = guest_info->irqmap[VIRT_UART] + ARM_SPI_BASE;
 403
 404     spcr = acpi_data_push(table_data, sizeof(*spcr));
 405
 406     spcr->interface_type = 0x3;    /* ARM PL011 UART */
 407
 408     spcr->base_address.space_id = AML_SYSTEM_MEMORY;
 409     spcr->base_address.bit_width = 8;
 410     spcr->base_address.bit_offset = 0;
 411     spcr->base_address.access_width = 1;
 412     spcr->base_address.address = cpu_to_le64(uart_memmap->base);
 413
 414     spcr->interrupt_types = (1 << 3); /* Bit[3] ARMH GIC interrupt */
 415     spcr->gsi = cpu_to_le32(irq);  /* Global System Interrupt */
 416
 417     spcr->baud = 3;                /* Baud Rate: 3 = 9600 */
 418     spcr->parity = 0;              /* No Parity */
 419     spcr->stopbits = 1;            /* 1 Stop bit */
 420     spcr->flowctrl = (1 << 1);     /* Bit[1] = RTS/CTS hardware flow control */
 421     spcr->term_type = 0;           /* Terminal Type: 0 = VT100 */
 422
 423     spcr->pci_device_id = 0xffff;  /* PCI Device ID: not a PCI device */
 424     spcr->pci_vendor_id = 0xffff;  /* PCI Vendor ID: not a PCI device */
 425
 426     build_header(linker, table_data, (void *)spcr, "SPCR", sizeof(*spcr), 2,
 427                  NULL);
 428 }
 429
 430 static void
 431 build_mcfg(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
 432 {
 433     AcpiTableMcfg *mcfg;
 434     const MemMapEntry *memmap = guest_info->memmap;
 435     int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
 436
 437     mcfg = acpi_data_push(table_data, len);
 438     mcfg->allocation[0].address = cpu_to_le64(memmap[VIRT_PCIE_ECAM].base);
 439
 440     /* Only a single allocation so no need to play with segments */
 441     mcfg->allocation[0].pci_segment = cpu_to_le16(0);
 442     mcfg->allocation[0].start_bus_number = 0;
 443     mcfg->allocation[0].end_bus_number = (memmap[VIRT_PCIE_ECAM].size
 444                                           / PCIE_MMCFG_SIZE_MIN) - 1;
 445
 446     build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL);
 447 }
 448
 449 /* GTDT */
 450 static void
 451 build_gtdt(GArray *table_data, GArray *linker)
 452 {
 453     int gtdt_start = table_data->len;
 454     AcpiGenericTimerTable *gtdt;
 455
 456     gtdt = acpi_data_push(table_data, sizeof *gtdt);
 457     /* The interrupt values are the same with the device tree when adding 16 */
 458     gtdt->secure_el1_interrupt = ARCH_TIMER_S_EL1_IRQ + 16;
 459     gtdt->secure_el1_flags = ACPI_EDGE_SENSITIVE;
 460
 461     gtdt->non_secure_el1_interrupt = ARCH_TIMER_NS_EL1_IRQ + 16;
 462     gtdt->non_secure_el1_flags = ACPI_EDGE_SENSITIVE;
 463
 464     gtdt->virtual_timer_interrupt = ARCH_TIMER_VIRT_IRQ + 16;
 465     gtdt->virtual_timer_flags = ACPI_EDGE_SENSITIVE;
 466
 467     gtdt->non_secure_el2_interrupt = ARCH_TIMER_NS_EL2_IRQ + 16;
 468     gtdt->non_secure_el2_flags = ACPI_EDGE_SENSITIVE;
 469
 470     build_header(linker, table_data,
 471                  (void *)(table_data->data + gtdt_start), "GTDT",
 472                  table_data->len - gtdt_start, 2, NULL);
 473 }
 474
 475 /* MADT */
 476 static void
 477 build_madt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info,
 478            VirtAcpiCpuInfo *cpuinfo)
 479 {
 480     int madt_start = table_data->len;
 481     const MemMapEntry *memmap = guest_info->memmap;
 482     const int *irqmap = guest_info->irqmap;
 483     AcpiMultipleApicTable *madt;
 484     AcpiMadtGenericDistributor *gicd;
 485     AcpiMadtGenericMsiFrame *gic_msi;
 486     int i;
 487
 488     madt = acpi_data_push(table_data, sizeof *madt);
 489
 490     gicd = acpi_data_push(table_data, sizeof *gicd);
 491     gicd->type = ACPI_APIC_GENERIC_DISTRIBUTOR;
 492     gicd->length = sizeof(*gicd);
 493     gicd->base_address = memmap[VIRT_GIC_DIST].base;
 494
 495     for (i = 0; i < guest_info->smp_cpus; i++) {
 496         AcpiMadtGenericInterrupt *gicc = acpi_data_push(table_data,
 497                                                      sizeof *gicc);
 498         ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(i));
 499
 500         gicc->type = ACPI_APIC_GENERIC_INTERRUPT;
 501         gicc->length = sizeof(*gicc);
 502         if (guest_info->gic_version == 2) {
 503             gicc->base_address = memmap[VIRT_GIC_CPU].base;
 504         }
 505         gicc->cpu_interface_number = i;
 506         gicc->arm_mpidr = armcpu->mp_affinity;
 507         gicc->uid = i;
 508         if (test_bit(i, cpuinfo->found_cpus)) {
 509             gicc->flags = cpu_to_le32(ACPI_GICC_ENABLED);
 510         }
 511     }
 512
 513     if (guest_info->gic_version == 3) {
 514         AcpiMadtGenericRedistributor *gicr = acpi_data_push(table_data,
 515                                                          sizeof *gicr);
 516
 517         gicr->type = ACPI_APIC_GENERIC_REDISTRIBUTOR;
 518         gicr->length = sizeof(*gicr);
 519         gicr->base_address = cpu_to_le64(memmap[VIRT_GIC_REDIST].base);
 520         gicr->range_length = cpu_to_le32(memmap[VIRT_GIC_REDIST].size);
 521     } else {
 522         gic_msi = acpi_data_push(table_data, sizeof *gic_msi);
 523         gic_msi->type = ACPI_APIC_GENERIC_MSI_FRAME;
 524         gic_msi->length = sizeof(*gic_msi);
 525         gic_msi->gic_msi_frame_id = 0;
 526         gic_msi->base_address = cpu_to_le64(memmap[VIRT_GIC_V2M].base);
 527         gic_msi->flags = cpu_to_le32(1);
 528         gic_msi->spi_count = cpu_to_le16(NUM_GICV2M_SPIS);
 529         gic_msi->spi_base = cpu_to_le16(irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE);
 530     }
 531
 532     build_header(linker, table_data,
 533                  (void *)(table_data->data + madt_start), "APIC",
 534                  table_data->len - madt_start, 3, NULL);
 535 }
 536
 537 /* FADT */
 538 static void
 539 build_fadt(GArray *table_data, GArray *linker, unsigned dsdt)
 540 {
 541     AcpiFadtDescriptorRev5_1 *fadt = acpi_data_push(table_data, sizeof(*fadt));
 542
 543     /* Hardware Reduced = 1 and use PSCI 0.2+ and with HVC */
 544     fadt->flags = cpu_to_le32(1 << ACPI_FADT_F_HW_REDUCED_ACPI);
 545     fadt->arm_boot_flags = cpu_to_le16((1 << ACPI_FADT_ARM_USE_PSCI_G_0_2) |
 546                                        (1 << ACPI_FADT_ARM_PSCI_USE_HVC));
 547
 548     /* ACPI v5.1 (fadt->revision.fadt->minor_revision) */
 549     fadt->minor_revision = 0x1;
 550
 551     fadt->dsdt = cpu_to_le32(dsdt);
 552     /* DSDT address to be filled by Guest linker */
 553     bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
 554                                    ACPI_BUILD_TABLE_FILE,
 555                                    table_data, &fadt->dsdt,
 556                                    sizeof fadt->dsdt);
 557
 558     build_header(linker, table_data,
 559                  (void *)fadt, "FACP", sizeof(*fadt), 5, NULL);
 560 }
 561
 562 /* DSDT */
 563 static void
 564 build_dsdt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
 565 {
 566     Aml *scope, *dsdt;
 567     const MemMapEntry *memmap = guest_info->memmap;
 568     const int *irqmap = guest_info->irqmap;
 569
 570     dsdt = init_aml_allocator();
 571     /* Reserve space for header */
 572     acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
 573
 574     scope = aml_scope("\\_SB");
 575     acpi_dsdt_add_cpus(scope, guest_info->smp_cpus);
 576     acpi_dsdt_add_uart(scope, &memmap[VIRT_UART],
 577                        (irqmap[VIRT_UART] + ARM_SPI_BASE));
 578     acpi_dsdt_add_rtc(scope, &memmap[VIRT_RTC],
 579                       (irqmap[VIRT_RTC] + ARM_SPI_BASE));
 580     acpi_dsdt_add_flash(scope, &memmap[VIRT_FLASH]);
 581     acpi_dsdt_add_virtio(scope, &memmap[VIRT_MMIO],
 582                     (irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS);
 583     acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE),
 584                       guest_info->use_highmem);
 585     acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO],
 586                        (irqmap[VIRT_GPIO] + ARM_SPI_BASE));
 587     acpi_dsdt_add_power_button(scope);
 588
 589     aml_append(dsdt, scope);
 590
 591     /* copy AML table into ACPI tables blob and patch header there */
 592     g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
 593     build_header(linker, table_data,
 594         (void *)(table_data->data + table_data->len - dsdt->buf->len),
 595         "DSDT", dsdt->buf->len, 2, NULL);
 596     free_aml_allocator();
 597 }
 598
 599 typedef
 600 struct AcpiBuildState {
 601     /* Copy of table in RAM (for patching). */
 602     MemoryRegion *table_mr;
 603     MemoryRegion *rsdp_mr;
 604     MemoryRegion *linker_mr;
 605     /* Is table patched? */
 606     bool patched;
 607     VirtGuestInfo *guest_info;
 608 } AcpiBuildState;
 609
 610 static
 611 void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)
 612 {
 613     GArray *table_offsets;
 614     unsigned dsdt, rsdt;
 615     VirtAcpiCpuInfo cpuinfo;
 616     GArray *tables_blob = tables->table_data;
 617
 618     virt_acpi_get_cpu_info(&cpuinfo);
 619
 620     table_offsets = g_array_new(false, true /* clear */,
 621                                         sizeof(uint32_t));
 622
 623     bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE,
 624                              64, false /* high memory */);
 625
 626     /*
 627      * The ACPI v5.1 tables for Hardware-reduced ACPI platform are:
 628      * RSDP
 629      * RSDT
 630      * FADT
 631      * GTDT
 632      * MADT
 633      * MCFG
 634      * DSDT
 635      */
 636
 637     /* DSDT is pointed to by FADT */
 638     dsdt = tables_blob->len;
 639     build_dsdt(tables_blob, tables->linker, guest_info);
 640
 641     /* FADT MADT GTDT MCFG SPCR pointed to by RSDT */
 642     acpi_add_table(table_offsets, tables_blob);
 643     build_fadt(tables_blob, tables->linker, dsdt);
 644
 645     acpi_add_table(table_offsets, tables_blob);
 646     build_madt(tables_blob, tables->linker, guest_info, &cpuinfo);
 647
 648     acpi_add_table(table_offsets, tables_blob);
 649     build_gtdt(tables_blob, tables->linker);
 650
 651     acpi_add_table(table_offsets, tables_blob);
 652     build_mcfg(tables_blob, tables->linker, guest_info);
 653
 654     acpi_add_table(table_offsets, tables_blob);
 655     build_spcr(tables_blob, tables->linker, guest_info);
 656
 657     /* RSDT is pointed to by RSDP */
 658     rsdt = tables_blob->len;
 659     build_rsdt(tables_blob, tables->linker, table_offsets);
 660
 661     /* RSDP is in FSEG memory, so allocate it separately */
 662     build_rsdp(tables->rsdp, tables->linker, rsdt);
 663
 664     /* Cleanup memory that's no longer used. */
 665     g_array_free(table_offsets, true);
 666 }
 667
 668 static void acpi_ram_update(MemoryRegion *mr, GArray *data)
 669 {
 670     uint32_t size = acpi_data_len(data);
 671
 672     /* Make sure RAM size is correct - in case it got changed
 673      * e.g. by migration */
 674     memory_region_ram_resize(mr, size, &error_abort);
 675
 676     memcpy(memory_region_get_ram_ptr(mr), data->data, size);
 677     memory_region_set_dirty(mr, 0, size);
 678 }
 679
 680 static void virt_acpi_build_update(void *build_opaque)
 681 {
 682     AcpiBuildState *build_state = build_opaque;
 683     AcpiBuildTables tables;
 684
 685     /* No state to update or already patched? Nothing to do. */
 686     if (!build_state || build_state->patched) {
 687         return;
 688     }
 689     build_state->patched = true;
 690
 691     acpi_build_tables_init(&tables);
 692
 693     virt_acpi_build(build_state->guest_info, &tables);
 694
 695     acpi_ram_update(build_state->table_mr, tables.table_data);
 696     acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
 697     acpi_ram_update(build_state->linker_mr, tables.linker);
 698
 699
 700     acpi_build_tables_cleanup(&tables, true);
 701 }
 702
 703 static void virt_acpi_build_reset(void *build_opaque)
 704 {
 705     AcpiBuildState *build_state = build_opaque;
 706     build_state->patched = false;
 707 }
 708
 709 static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state,
 710                                        GArray *blob, const char *name,
 711                                        uint64_t max_size)
 712 {
 713     return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
 714                         name, virt_acpi_build_update, build_state);
 715 }
 716
 717 static const VMStateDescription vmstate_virt_acpi_build = {
 718     .name = "virt_acpi_build",
 719     .version_id = 1,
 720     .minimum_version_id = 1,
 721     .fields = (VMStateField[]) {
 722         VMSTATE_BOOL(patched, AcpiBuildState),
 723         VMSTATE_END_OF_LIST()
 724     },
 725 };
 726
 727 void virt_acpi_setup(VirtGuestInfo *guest_info)
 728 {
 729     AcpiBuildTables tables;
 730     AcpiBuildState *build_state;
 731
 732     if (!guest_info->fw_cfg) {
 733         trace_virt_acpi_setup();
 734         return;
 735     }
 736
 737     if (!acpi_enabled) {
 738         trace_virt_acpi_setup();
 739         return;
 740     }
 741
 742     build_state = g_malloc0(sizeof *build_state);
 743     build_state->guest_info = guest_info;
 744
 745     acpi_build_tables_init(&tables);
 746     virt_acpi_build(build_state->guest_info, &tables);
 747
 748     /* Now expose it all to Guest */
 749     build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data,
 750                                                ACPI_BUILD_TABLE_FILE,
 751                                                ACPI_BUILD_TABLE_MAX_SIZE);
 752     assert(build_state->table_mr != NULL);
 753
 754     build_state->linker_mr =
 755         acpi_add_rom_blob(build_state, tables.linker, "etc/table-loader", 0);
 756
 757     fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
 758                     tables.tcpalog->data, acpi_data_len(tables.tcpalog));
 759
 760     build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp,
 761                                               ACPI_BUILD_RSDP_FILE, 0);
 762
 763     qemu_register_reset(virt_acpi_build_reset, build_state);
 764     virt_acpi_build_reset(build_state);
 765     vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state);
 766
 767     /* Cleanup tables but don't free the memory: we track it
 768      * in build_state.
 769      */
 770     acpi_build_tables_cleanup(&tables, false);
 771 }