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qemu/hw/arm/virt-acpi-build.c
Peter Maydell e7100972f2 hw/arm/virt: allow creation of a second NonSecure UART 
For some use-cases, it is helpful to have more than one UART
available to the guest.  If the second UART slot is not already used
for a TrustZone Secure-World-only UART, create it as a NonSecure UART
only when the user provides a serial backend (e.g.  via a second
-serial command line option).

This avoids problems where existing guest software only expects a
single UART, and gets confused by the second UART in the DTB.  The
major example of this is older EDK2 firmware, which will send the
GRUB bootloader output to UART1 and the guest serial output to UART0.
Users who want to use both UARTs with a guest setup including EDK2
are advised to update to EDK2 release edk2-stable202311 or newer.
(The prebuilt EDK2 blobs QEMU upstream provides are new enough.)
The relevant EDK2 changes are the ones described here:
https://bugzilla.tianocore.org/show_bug.cgi?id=4577

Inspired-by: Axel Heider <axel.heider@hensoldt.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240610162343.2131524-4-peter.maydell@linaro.org
2024-06-21 14:01:59 +01:00

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/* Support for generating ACPI tables and passing them to Guests
*
* ARM virt ACPI generation
*
* Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
* Copyright (C) 2006 Fabrice Bellard
* Copyright (C) 2013 Red Hat Inc
*
* Author: Michael S. Tsirkin <mst@redhat.com>
*
* Copyright (c) 2015 HUAWEI TECHNOLOGIES CO.,LTD.
*
* Author: Shannon Zhao <zhaoshenglong@huawei.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/bitmap.h"
#include "qemu/error-report.h"
#include "trace.h"
#include "hw/core/cpu.h"
#include "hw/acpi/acpi-defs.h"
#include "hw/acpi/acpi.h"
#include "hw/nvram/fw_cfg_acpi.h"
#include "hw/acpi/bios-linker-loader.h"
#include "hw/acpi/aml-build.h"
#include "hw/acpi/utils.h"
#include "hw/acpi/pci.h"
#include "hw/acpi/memory_hotplug.h"
#include "hw/acpi/generic_event_device.h"
#include "hw/acpi/tpm.h"
#include "hw/acpi/hmat.h"
#include "hw/pci/pcie_host.h"
#include "hw/pci/pci.h"
#include "hw/pci/pci_bus.h"
#include "hw/pci-host/gpex.h"
#include "hw/arm/virt.h"
#include "hw/intc/arm_gicv3_its_common.h"
#include "hw/mem/nvdimm.h"
#include "hw/platform-bus.h"
#include "sysemu/numa.h"
#include "sysemu/reset.h"
#include "sysemu/tpm.h"
#include "migration/vmstate.h"
#include "hw/acpi/ghes.h"
#include "hw/acpi/viot.h"
#include "hw/acpi/acpi_generic_initiator.h"
#include "hw/virtio/virtio-acpi.h"
#include "target/arm/multiprocessing.h"
#define ARM_SPI_BASE 32
#define ACPI_BUILD_TABLE_SIZE 0x20000
static void acpi_dsdt_add_cpus(Aml *scope, VirtMachineState *vms)
{
MachineState *ms = MACHINE(vms);
uint16_t i;
for (i = 0; i < ms->smp.cpus; i++) {
Aml *dev = aml_device("C%.03X", i);
aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
aml_append(dev, aml_name_decl("_UID", aml_int(i)));
aml_append(scope, dev);
}
}
static void acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap,
uint32_t uart_irq, int uartidx)
{
Aml *dev = aml_device("COM%d", uartidx);
aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0011")));
aml_append(dev, aml_name_decl("_UID", aml_int(uartidx)));
Aml *crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(uart_memmap->base,
uart_memmap->size, AML_READ_WRITE));
aml_append(crs,
aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
AML_EXCLUSIVE, &uart_irq, 1));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
static void acpi_dsdt_add_flash(Aml *scope, const MemMapEntry *flash_memmap)
{
Aml *dev, *crs;
hwaddr base = flash_memmap->base;
hwaddr size = flash_memmap->size / 2;
dev = aml_device("FLS0");
aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
aml_append(dev, aml_name_decl("_UID", aml_int(0)));
crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
dev = aml_device("FLS1");
aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
aml_append(dev, aml_name_decl("_UID", aml_int(1)));
crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(base + size, size, AML_READ_WRITE));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
uint32_t irq, VirtMachineState *vms)
{
int ecam_id = VIRT_ECAM_ID(vms->highmem_ecam);
struct GPEXConfig cfg = {
.mmio32 = memmap[VIRT_PCIE_MMIO],
.pio = memmap[VIRT_PCIE_PIO],
.ecam = memmap[ecam_id],
.irq = irq,
.bus = vms->bus,
};
if (vms->highmem_mmio) {
cfg.mmio64 = memmap[VIRT_HIGH_PCIE_MMIO];
}
acpi_dsdt_add_gpex(scope, &cfg);
}
static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
uint32_t gpio_irq)
{
Aml *dev = aml_device("GPO0");
aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061")));
aml_append(dev, aml_name_decl("_UID", aml_int(0)));
Aml *crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(gpio_memmap->base, gpio_memmap->size,
AML_READ_WRITE));
aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
AML_EXCLUSIVE, &gpio_irq, 1));
aml_append(dev, aml_name_decl("_CRS", crs));
Aml *aei = aml_resource_template();
/* Pin 3 for power button */
const uint32_t pin_list[1] = {3};
aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH,
AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1,
"GPO0", NULL, 0));
aml_append(dev, aml_name_decl("_AEI", aei));
/* _E03 is handle for power button */
Aml *method = aml_method("_E03", 0, AML_NOTSERIALIZED);
aml_append(method, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE),
aml_int(0x80)));
aml_append(dev, method);
aml_append(scope, dev);
}
#ifdef CONFIG_TPM
static void acpi_dsdt_add_tpm(Aml *scope, VirtMachineState *vms)
{
PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(vms->platform_bus_dev);
hwaddr pbus_base = vms->memmap[VIRT_PLATFORM_BUS].base;
SysBusDevice *sbdev = SYS_BUS_DEVICE(tpm_find());
MemoryRegion *sbdev_mr;
hwaddr tpm_base;
if (!sbdev) {
return;
}
tpm_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
assert(tpm_base != -1);
tpm_base += pbus_base;
sbdev_mr = sysbus_mmio_get_region(sbdev, 0);
Aml *dev = aml_device("TPM0");
aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101")));
aml_append(dev, aml_name_decl("_STR", aml_string("TPM 2.0 Device")));
aml_append(dev, aml_name_decl("_UID", aml_int(0)));
Aml *crs = aml_resource_template();
aml_append(crs,
aml_memory32_fixed(tpm_base,
(uint32_t)memory_region_size(sbdev_mr),
AML_READ_WRITE));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
#endif
#define ID_MAPPING_ENTRY_SIZE 20
#define SMMU_V3_ENTRY_SIZE 68
#define ROOT_COMPLEX_ENTRY_SIZE 36
#define IORT_NODE_OFFSET 48
static void build_iort_id_mapping(GArray *table_data, uint32_t input_base,
uint32_t id_count, uint32_t out_ref)
{
/* Table 4 ID mapping format */
build_append_int_noprefix(table_data, input_base, 4); /* Input base */
build_append_int_noprefix(table_data, id_count, 4); /* Number of IDs */
build_append_int_noprefix(table_data, input_base, 4); /* Output base */
build_append_int_noprefix(table_data, out_ref, 4); /* Output Reference */
/* Flags */
build_append_int_noprefix(table_data, 0 /* Single mapping (disabled) */, 4);
}
struct AcpiIortIdMapping {
uint32_t input_base;
uint32_t id_count;
};
typedef struct AcpiIortIdMapping AcpiIortIdMapping;
/* Build the iort ID mapping to SMMUv3 for a given PCI host bridge */
static int
iort_host_bridges(Object *obj, void *opaque)
{
GArray *idmap_blob = opaque;
if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) {
PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus;
if (bus && !pci_bus_bypass_iommu(bus)) {
int min_bus, max_bus;
pci_bus_range(bus, &min_bus, &max_bus);
AcpiIortIdMapping idmap = {
.input_base = min_bus << 8,
.id_count = (max_bus - min_bus + 1) << 8,
};
g_array_append_val(idmap_blob, idmap);
}
}
return 0;
}
static int iort_idmap_compare(gconstpointer a, gconstpointer b)
{
AcpiIortIdMapping *idmap_a = (AcpiIortIdMapping *)a;
AcpiIortIdMapping *idmap_b = (AcpiIortIdMapping *)b;
return idmap_a->input_base - idmap_b->input_base;
}
/*
* Input Output Remapping Table (IORT)
* Conforms to "IO Remapping Table System Software on ARM Platforms",
* Document number: ARM DEN 0049E.b, Feb 2021
*/
static void
build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
int i, nb_nodes, rc_mapping_count;
const uint32_t iort_node_offset = IORT_NODE_OFFSET;
size_t node_size, smmu_offset = 0;
AcpiIortIdMapping *idmap;
uint32_t id = 0;
GArray *smmu_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping));
GArray *its_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping));
AcpiTable table = { .sig = "IORT", .rev = 3, .oem_id = vms->oem_id,
.oem_table_id = vms->oem_table_id };
/* Table 2 The IORT */
acpi_table_begin(&table, table_data);
if (vms->iommu == VIRT_IOMMU_SMMUV3) {
AcpiIortIdMapping next_range = {0};
object_child_foreach_recursive(object_get_root(),
iort_host_bridges, smmu_idmaps);
/* Sort the smmu idmap by input_base */
g_array_sort(smmu_idmaps, iort_idmap_compare);
/*
* Split the whole RIDs by mapping from RC to SMMU,
* build the ID mapping from RC to ITS directly.
*/
for (i = 0; i < smmu_idmaps->len; i++) {
idmap = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i);
if (next_range.input_base < idmap->input_base) {
next_range.id_count = idmap->input_base - next_range.input_base;
g_array_append_val(its_idmaps, next_range);
}
next_range.input_base = idmap->input_base + idmap->id_count;
}
/* Append the last RC -> ITS ID mapping */
if (next_range.input_base < 0xFFFF) {
next_range.id_count = 0xFFFF - next_range.input_base;
g_array_append_val(its_idmaps, next_range);
}
nb_nodes = 3; /* RC, ITS, SMMUv3 */
rc_mapping_count = smmu_idmaps->len + its_idmaps->len;
} else {
nb_nodes = 2; /* RC, ITS */
rc_mapping_count = 1;
}
/* Number of IORT Nodes */
build_append_int_noprefix(table_data, nb_nodes, 4);
/* Offset to Array of IORT Nodes */
build_append_int_noprefix(table_data, IORT_NODE_OFFSET, 4);
build_append_int_noprefix(table_data, 0, 4); /* Reserved */
/* Table 12 ITS Group Format */
build_append_int_noprefix(table_data, 0 /* ITS Group */, 1); /* Type */
node_size = 20 /* fixed header size */ + 4 /* 1 GIC ITS Identifier */;
build_append_int_noprefix(table_data, node_size, 2); /* Length */
build_append_int_noprefix(table_data, 1, 1); /* Revision */
build_append_int_noprefix(table_data, id++, 4); /* Identifier */
build_append_int_noprefix(table_data, 0, 4); /* Number of ID mappings */
build_append_int_noprefix(table_data, 0, 4); /* Reference to ID Array */
build_append_int_noprefix(table_data, 1, 4); /* Number of ITSs */
/* GIC ITS Identifier Array */
build_append_int_noprefix(table_data, 0 /* MADT translation_id */, 4);
if (vms->iommu == VIRT_IOMMU_SMMUV3) {
int irq = vms->irqmap[VIRT_SMMU] + ARM_SPI_BASE;
smmu_offset = table_data->len - table.table_offset;
/* Table 9 SMMUv3 Format */
build_append_int_noprefix(table_data, 4 /* SMMUv3 */, 1); /* Type */
node_size = SMMU_V3_ENTRY_SIZE + ID_MAPPING_ENTRY_SIZE;
build_append_int_noprefix(table_data, node_size, 2); /* Length */
build_append_int_noprefix(table_data, 4, 1); /* Revision */
build_append_int_noprefix(table_data, id++, 4); /* Identifier */
build_append_int_noprefix(table_data, 1, 4); /* Number of ID mappings */
/* Reference to ID Array */
build_append_int_noprefix(table_data, SMMU_V3_ENTRY_SIZE, 4);
/* Base address */
build_append_int_noprefix(table_data, vms->memmap[VIRT_SMMU].base, 8);
/* Flags */
build_append_int_noprefix(table_data, 1 /* COHACC Override */, 4);
build_append_int_noprefix(table_data, 0, 4); /* Reserved */
build_append_int_noprefix(table_data, 0, 8); /* VATOS address */
/* Model */
build_append_int_noprefix(table_data, 0 /* Generic SMMU-v3 */, 4);
build_append_int_noprefix(table_data, irq, 4); /* Event */
build_append_int_noprefix(table_data, irq + 1, 4); /* PRI */
build_append_int_noprefix(table_data, irq + 3, 4); /* GERR */
build_append_int_noprefix(table_data, irq + 2, 4); /* Sync */
build_append_int_noprefix(table_data, 0, 4); /* Proximity domain */
/* DeviceID mapping index (ignored since interrupts are GSIV based) */
build_append_int_noprefix(table_data, 0, 4);
/* output IORT node is the ITS group node (the first node) */
build_iort_id_mapping(table_data, 0, 0xFFFF, IORT_NODE_OFFSET);
}
/* Table 17 Root Complex Node */
build_append_int_noprefix(table_data, 2 /* Root complex */, 1); /* Type */
node_size = ROOT_COMPLEX_ENTRY_SIZE +
ID_MAPPING_ENTRY_SIZE * rc_mapping_count;
build_append_int_noprefix(table_data, node_size, 2); /* Length */
build_append_int_noprefix(table_data, 3, 1); /* Revision */
build_append_int_noprefix(table_data, id++, 4); /* Identifier */
/* Number of ID mappings */
build_append_int_noprefix(table_data, rc_mapping_count, 4);
/* Reference to ID Array */
build_append_int_noprefix(table_data, ROOT_COMPLEX_ENTRY_SIZE, 4);
/* Table 14 Memory access properties */
/* CCA: Cache Coherent Attribute */
build_append_int_noprefix(table_data, 1 /* fully coherent */, 4);
build_append_int_noprefix(table_data, 0, 1); /* AH: Note Allocation Hints */
build_append_int_noprefix(table_data, 0, 2); /* Reserved */
/* Table 15 Memory Access Flags */
build_append_int_noprefix(table_data, 0x3 /* CCA = CPM = DACS = 1 */, 1);
build_append_int_noprefix(table_data, 0, 4); /* ATS Attribute */
/* MCFG pci_segment */
build_append_int_noprefix(table_data, 0, 4); /* PCI Segment number */
/* Memory address size limit */
build_append_int_noprefix(table_data, 64, 1);
build_append_int_noprefix(table_data, 0, 3); /* Reserved */
/* Output Reference */
if (vms->iommu == VIRT_IOMMU_SMMUV3) {
AcpiIortIdMapping *range;
/* translated RIDs connect to SMMUv3 node: RC -> SMMUv3 -> ITS */
for (i = 0; i < smmu_idmaps->len; i++) {
range = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i);
/* output IORT node is the smmuv3 node */
build_iort_id_mapping(table_data, range->input_base,
range->id_count, smmu_offset);
}
/* bypassed RIDs connect to ITS group node directly: RC -> ITS */
for (i = 0; i < its_idmaps->len; i++) {
range = &g_array_index(its_idmaps, AcpiIortIdMapping, i);
/* output IORT node is the ITS group node (the first node) */
build_iort_id_mapping(table_data, range->input_base,
range->id_count, iort_node_offset);
}
} else {
/* output IORT node is the ITS group node (the first node) */
build_iort_id_mapping(table_data, 0, 0xFFFF, IORT_NODE_OFFSET);
}
acpi_table_end(linker, &table);
g_array_free(smmu_idmaps, true);
g_array_free(its_idmaps, true);
}
/*
* Serial Port Console Redirection Table (SPCR)
* Rev: 1.07
*/
static void
spcr_setup(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
AcpiSpcrData serial = {
.interface_type = 3, /* ARM PL011 UART */
.base_addr.id = AML_AS_SYSTEM_MEMORY,
.base_addr.width = 32,
.base_addr.offset = 0,
.base_addr.size = 3,
.base_addr.addr = vms->memmap[VIRT_UART0].base,
.interrupt_type = (1 << 3),/* Bit[3] ARMH GIC interrupt*/
.pc_interrupt = 0, /* IRQ */
.interrupt = (vms->irqmap[VIRT_UART0] + ARM_SPI_BASE),
.baud_rate = 3, /* 9600 */
.parity = 0, /* No Parity */
.stop_bits = 1, /* 1 Stop bit */
.flow_control = 1 << 1, /* RTS/CTS hardware flow control */
.terminal_type = 0, /* VT100 */
.language = 0, /* Language */
.pci_device_id = 0xffff, /* not a PCI device*/
.pci_vendor_id = 0xffff, /* not a PCI device*/
.pci_bus = 0,
.pci_device = 0,
.pci_function = 0,
.pci_flags = 0,
.pci_segment = 0,
};
build_spcr(table_data, linker, &serial, 2, vms->oem_id, vms->oem_table_id);
}
/*
* ACPI spec, Revision 5.1
* 5.2.16 System Resource Affinity Table (SRAT)
*/
static void
build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
int i;
uint64_t mem_base;
MachineClass *mc = MACHINE_GET_CLASS(vms);
MachineState *ms = MACHINE(vms);
const CPUArchIdList *cpu_list = mc->possible_cpu_arch_ids(ms);
AcpiTable table = { .sig = "SRAT", .rev = 3, .oem_id = vms->oem_id,
.oem_table_id = vms->oem_table_id };
acpi_table_begin(&table, table_data);
build_append_int_noprefix(table_data, 1, 4); /* Reserved */
build_append_int_noprefix(table_data, 0, 8); /* Reserved */
for (i = 0; i < cpu_list->len; ++i) {
uint32_t nodeid = cpu_list->cpus[i].props.node_id;
/*
* 5.2.16.4 GICC Affinity Structure
*/
build_append_int_noprefix(table_data, 3, 1); /* Type */
build_append_int_noprefix(table_data, 18, 1); /* Length */
build_append_int_noprefix(table_data, nodeid, 4); /* Proximity Domain */
build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */
/* Flags, Table 5-76 */
build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
}
mem_base = vms->memmap[VIRT_MEM].base;
for (i = 0; i < ms->numa_state->num_nodes; ++i) {
if (ms->numa_state->nodes[i].node_mem > 0) {
build_srat_memory(table_data, mem_base,
ms->numa_state->nodes[i].node_mem, i,
MEM_AFFINITY_ENABLED);
mem_base += ms->numa_state->nodes[i].node_mem;
}
}
build_srat_generic_pci_initiator(table_data);
if (ms->nvdimms_state->is_enabled) {
nvdimm_build_srat(table_data);
}
if (ms->device_memory) {
build_srat_memory(table_data, ms->device_memory->base,
memory_region_size(&ms->device_memory->mr),
ms->numa_state->num_nodes - 1,
MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
}
acpi_table_end(linker, &table);
}
/*
* ACPI spec, Revision 6.5
* 5.2.25 Generic Timer Description Table (GTDT)
*/
static void
build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
/*
* Table 5-117 Flag Definitions
* set only "Timer interrupt Mode" and assume "Timer Interrupt
* polarity" bit as '0: Interrupt is Active high'
*/
uint32_t irqflags = vmc->claim_edge_triggered_timers ?
1 : /* Interrupt is Edge triggered */
0; /* Interrupt is Level triggered */
AcpiTable table = { .sig = "GTDT", .rev = 3, .oem_id = vms->oem_id,
.oem_table_id = vms->oem_table_id };
acpi_table_begin(&table, table_data);
/* CntControlBase Physical Address */
build_append_int_noprefix(table_data, 0xFFFFFFFFFFFFFFFF, 8);
build_append_int_noprefix(table_data, 0, 4); /* Reserved */
/*
* FIXME: clarify comment:
* The interrupt values are the same with the device tree when adding 16
*/
/* Secure EL1 timer GSIV */
build_append_int_noprefix(table_data, ARCH_TIMER_S_EL1_IRQ, 4);
/* Secure EL1 timer Flags */
build_append_int_noprefix(table_data, irqflags, 4);
/* Non-Secure EL1 timer GSIV */
build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL1_IRQ, 4);
/* Non-Secure EL1 timer Flags */
build_append_int_noprefix(table_data, irqflags |
1UL << 2, /* Always-on Capability */
4);
/* Virtual timer GSIV */
build_append_int_noprefix(table_data, ARCH_TIMER_VIRT_IRQ, 4);
/* Virtual Timer Flags */
build_append_int_noprefix(table_data, irqflags, 4);
/* Non-Secure EL2 timer GSIV */
build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL2_IRQ, 4);
/* Non-Secure EL2 timer Flags */
build_append_int_noprefix(table_data, irqflags, 4);
/* CntReadBase Physical address */
build_append_int_noprefix(table_data, 0xFFFFFFFFFFFFFFFF, 8);
/* Platform Timer Count */
build_append_int_noprefix(table_data, 0, 4);
/* Platform Timer Offset */
build_append_int_noprefix(table_data, 0, 4);
if (vms->ns_el2_virt_timer_irq) {
/* Virtual EL2 Timer GSIV */
build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL2_VIRT_IRQ, 4);
/* Virtual EL2 Timer Flags */
build_append_int_noprefix(table_data, irqflags, 4);
} else {
build_append_int_noprefix(table_data, 0, 4);
build_append_int_noprefix(table_data, 0, 4);
}
acpi_table_end(linker, &table);
}
/* Debug Port Table 2 (DBG2) */
static void
build_dbg2(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
AcpiTable table = { .sig = "DBG2", .rev = 0, .oem_id = vms->oem_id,
.oem_table_id = vms->oem_table_id };
int dbg2devicelength;
const char name[] = "COM0";
const int namespace_length = sizeof(name);
acpi_table_begin(&table, table_data);
dbg2devicelength = 22 + /* BaseAddressRegister[] offset */
12 + /* BaseAddressRegister[] */
4 + /* AddressSize[] */
namespace_length /* NamespaceString[] */;
/* OffsetDbgDeviceInfo */
build_append_int_noprefix(table_data, 44, 4);
/* NumberDbgDeviceInfo */
build_append_int_noprefix(table_data, 1, 4);
/* Table 2. Debug Device Information structure format */
build_append_int_noprefix(table_data, 0, 1); /* Revision */
build_append_int_noprefix(table_data, dbg2devicelength, 2); /* Length */
/* NumberofGenericAddressRegisters */
build_append_int_noprefix(table_data, 1, 1);
/* NameSpaceStringLength */
build_append_int_noprefix(table_data, namespace_length, 2);
build_append_int_noprefix(table_data, 38, 2); /* NameSpaceStringOffset */
build_append_int_noprefix(table_data, 0, 2); /* OemDataLength */
/* OemDataOffset (0 means no OEM data) */
build_append_int_noprefix(table_data, 0, 2);
/* Port Type */
build_append_int_noprefix(table_data, 0x8000 /* Serial */, 2);
/* Port Subtype */
build_append_int_noprefix(table_data, 0x3 /* ARM PL011 UART */, 2);
build_append_int_noprefix(table_data, 0, 2); /* Reserved */
/* BaseAddressRegisterOffset */
build_append_int_noprefix(table_data, 22, 2);
/* AddressSizeOffset */
build_append_int_noprefix(table_data, 34, 2);
/* BaseAddressRegister[] */
build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 32, 0, 3,
vms->memmap[VIRT_UART0].base);
/* AddressSize[] */
build_append_int_noprefix(table_data,
vms->memmap[VIRT_UART0].size, 4);
/* NamespaceString[] */
g_array_append_vals(table_data, name, namespace_length);
acpi_table_end(linker, &table);
};
/*
* ACPI spec, Revision 6.0 Errata A
* 5.2.12 Multiple APIC Description Table (MADT)
*/
static void build_append_gicr(GArray *table_data, uint64_t base, uint32_t size)
{
build_append_int_noprefix(table_data, 0xE, 1); /* Type */
build_append_int_noprefix(table_data, 16, 1); /* Length */
build_append_int_noprefix(table_data, 0, 2); /* Reserved */
/* Discovery Range Base Address */
build_append_int_noprefix(table_data, base, 8);
build_append_int_noprefix(table_data, size, 4); /* Discovery Range Length */
}
static void
build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
int i;
VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
const MemMapEntry *memmap = vms->memmap;
AcpiTable table = { .sig = "APIC", .rev = 4, .oem_id = vms->oem_id,
.oem_table_id = vms->oem_table_id };
acpi_table_begin(&table, table_data);
/* Local Interrupt Controller Address */
build_append_int_noprefix(table_data, 0, 4);
build_append_int_noprefix(table_data, 0, 4); /* Flags */
/* 5.2.12.15 GIC Distributor Structure */
build_append_int_noprefix(table_data, 0xC, 1); /* Type */
build_append_int_noprefix(table_data, 24, 1); /* Length */
build_append_int_noprefix(table_data, 0, 2); /* Reserved */
build_append_int_noprefix(table_data, 0, 4); /* GIC ID */
/* Physical Base Address */
build_append_int_noprefix(table_data, memmap[VIRT_GIC_DIST].base, 8);
build_append_int_noprefix(table_data, 0, 4); /* System Vector Base */
/* GIC version */
build_append_int_noprefix(table_data, vms->gic_version, 1);
build_append_int_noprefix(table_data, 0, 3); /* Reserved */
for (i = 0; i < MACHINE(vms)->smp.cpus; i++) {
ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(i));
uint64_t physical_base_address = 0, gich = 0, gicv = 0;
uint32_t vgic_interrupt = vms->virt ? ARCH_GIC_MAINT_IRQ : 0;
uint32_t pmu_interrupt = arm_feature(&armcpu->env, ARM_FEATURE_PMU) ?
VIRTUAL_PMU_IRQ : 0;
if (vms->gic_version == VIRT_GIC_VERSION_2) {
physical_base_address = memmap[VIRT_GIC_CPU].base;
gicv = memmap[VIRT_GIC_VCPU].base;
gich = memmap[VIRT_GIC_HYP].base;
}
/* 5.2.12.14 GIC Structure */
build_append_int_noprefix(table_data, 0xB, 1); /* Type */
build_append_int_noprefix(table_data, 80, 1); /* Length */
build_append_int_noprefix(table_data, 0, 2); /* Reserved */
build_append_int_noprefix(table_data, i, 4); /* GIC ID */
build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */
/* Flags */
build_append_int_noprefix(table_data, 1, 4); /* Enabled */
/* Parking Protocol Version */
build_append_int_noprefix(table_data, 0, 4);
/* Performance Interrupt GSIV */
build_append_int_noprefix(table_data, pmu_interrupt, 4);
build_append_int_noprefix(table_data, 0, 8); /* Parked Address */
/* Physical Base Address */
build_append_int_noprefix(table_data, physical_base_address, 8);
build_append_int_noprefix(table_data, gicv, 8); /* GICV */
build_append_int_noprefix(table_data, gich, 8); /* GICH */
/* VGIC Maintenance interrupt */
build_append_int_noprefix(table_data, vgic_interrupt, 4);
build_append_int_noprefix(table_data, 0, 8); /* GICR Base Address*/
/* MPIDR */
build_append_int_noprefix(table_data, arm_cpu_mp_affinity(armcpu), 8);
/* Processor Power Efficiency Class */
build_append_int_noprefix(table_data, 0, 1);
/* Reserved */
build_append_int_noprefix(table_data, 0, 3);
}
if (vms->gic_version != VIRT_GIC_VERSION_2) {
build_append_gicr(table_data, memmap[VIRT_GIC_REDIST].base,
memmap[VIRT_GIC_REDIST].size);
if (virt_gicv3_redist_region_count(vms) == 2) {
build_append_gicr(table_data, memmap[VIRT_HIGH_GIC_REDIST2].base,
memmap[VIRT_HIGH_GIC_REDIST2].size);
}
if (its_class_name() && !vmc->no_its) {
/*
* ACPI spec, Revision 6.0 Errata A
* (original 6.0 definition has invalid Length)
* 5.2.12.18 GIC ITS Structure
*/
build_append_int_noprefix(table_data, 0xF, 1); /* Type */
build_append_int_noprefix(table_data, 20, 1); /* Length */
build_append_int_noprefix(table_data, 0, 2); /* Reserved */
build_append_int_noprefix(table_data, 0, 4); /* GIC ITS ID */
/* Physical Base Address */
build_append_int_noprefix(table_data, memmap[VIRT_GIC_ITS].base, 8);
build_append_int_noprefix(table_data, 0, 4); /* Reserved */
}
} else {
const uint16_t spi_base = vms->irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE;
/* 5.2.12.16 GIC MSI Frame Structure */
build_append_int_noprefix(table_data, 0xD, 1); /* Type */
build_append_int_noprefix(table_data, 24, 1); /* Length */
build_append_int_noprefix(table_data, 0, 2); /* Reserved */
build_append_int_noprefix(table_data, 0, 4); /* GIC MSI Frame ID */
/* Physical Base Address */
build_append_int_noprefix(table_data, memmap[VIRT_GIC_V2M].base, 8);
build_append_int_noprefix(table_data, 1, 4); /* Flags */
/* SPI Count */
build_append_int_noprefix(table_data, NUM_GICV2M_SPIS, 2);
build_append_int_noprefix(table_data, spi_base, 2); /* SPI Base */
}
acpi_table_end(linker, &table);
}
/* FADT */
static void build_fadt_rev6(GArray *table_data, BIOSLinker *linker,
VirtMachineState *vms, unsigned dsdt_tbl_offset)
{
/* ACPI v6.3 */
AcpiFadtData fadt = {
.rev = 6,
.minor_ver = 3,
.flags = 1 << ACPI_FADT_F_HW_REDUCED_ACPI,
.xdsdt_tbl_offset = &dsdt_tbl_offset,
};
switch (vms->psci_conduit) {
case QEMU_PSCI_CONDUIT_DISABLED:
fadt.arm_boot_arch = 0;
break;
case QEMU_PSCI_CONDUIT_HVC:
fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT |
ACPI_FADT_ARM_PSCI_USE_HVC;
break;
case QEMU_PSCI_CONDUIT_SMC:
fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT;
break;
default:
g_assert_not_reached();
}
build_fadt(table_data, linker, &fadt, vms->oem_id, vms->oem_table_id);
}
/* DSDT */
static void
build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
Aml *scope, *dsdt;
MachineState *ms = MACHINE(vms);
const MemMapEntry *memmap = vms->memmap;
const int *irqmap = vms->irqmap;
AcpiTable table = { .sig = "DSDT", .rev = 2, .oem_id = vms->oem_id,
.oem_table_id = vms->oem_table_id };
acpi_table_begin(&table, table_data);
dsdt = init_aml_allocator();
/* When booting the VM with UEFI, UEFI takes ownership of the RTC hardware.
* While UEFI can use libfdt to disable the RTC device node in the DTB that
* it passes to the OS, it cannot modify AML. Therefore, we won't generate
* the RTC ACPI device at all when using UEFI.
*/
scope = aml_scope("\\_SB");
acpi_dsdt_add_cpus(scope, vms);
acpi_dsdt_add_uart(scope, &memmap[VIRT_UART0],
(irqmap[VIRT_UART0] + ARM_SPI_BASE), 0);
if (vms->second_ns_uart_present) {
acpi_dsdt_add_uart(scope, &memmap[VIRT_UART1],
(irqmap[VIRT_UART1] + ARM_SPI_BASE), 1);
}
if (vmc->acpi_expose_flash) {
acpi_dsdt_add_flash(scope, &memmap[VIRT_FLASH]);
}
fw_cfg_acpi_dsdt_add(scope, &memmap[VIRT_FW_CFG]);
virtio_acpi_dsdt_add(scope, memmap[VIRT_MMIO].base, memmap[VIRT_MMIO].size,
(irqmap[VIRT_MMIO] + ARM_SPI_BASE),
0, NUM_VIRTIO_TRANSPORTS);
acpi_dsdt_add_pci(scope, memmap, irqmap[VIRT_PCIE] + ARM_SPI_BASE, vms);
if (vms->acpi_dev) {
build_ged_aml(scope, "\\_SB."GED_DEVICE,
HOTPLUG_HANDLER(vms->acpi_dev),
irqmap[VIRT_ACPI_GED] + ARM_SPI_BASE, AML_SYSTEM_MEMORY,
memmap[VIRT_ACPI_GED].base);
} else {
acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO],
(irqmap[VIRT_GPIO] + ARM_SPI_BASE));
}
if (vms->acpi_dev) {
uint32_t event = object_property_get_uint(OBJECT(vms->acpi_dev),
"ged-event", &error_abort);
if (event & ACPI_GED_MEM_HOTPLUG_EVT) {
build_memory_hotplug_aml(scope, ms->ram_slots, "\\_SB", NULL,
AML_SYSTEM_MEMORY,
memmap[VIRT_PCDIMM_ACPI].base);
}
}
acpi_dsdt_add_power_button(scope);
#ifdef CONFIG_TPM
acpi_dsdt_add_tpm(scope, vms);
#endif
aml_append(dsdt, scope);
/* copy AML table into ACPI tables blob */
g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
acpi_table_end(linker, &table);
free_aml_allocator();
}
typedef
struct AcpiBuildState {
/* Copy of table in RAM (for patching). */
MemoryRegion *table_mr;
MemoryRegion *rsdp_mr;
MemoryRegion *linker_mr;
/* Is table patched? */
bool patched;
} AcpiBuildState;
static void acpi_align_size(GArray *blob, unsigned align)
{
/*
* Align size to multiple of given size. This reduces the chance
* we need to change size in the future (breaking cross version migration).
*/
g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
}
static
void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
{
VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
GArray *table_offsets;
unsigned dsdt, xsdt;
GArray *tables_blob = tables->table_data;
MachineState *ms = MACHINE(vms);
table_offsets = g_array_new(false, true /* clear */,
sizeof(uint32_t));
bios_linker_loader_alloc(tables->linker,
ACPI_BUILD_TABLE_FILE, tables_blob,
64, false /* high memory */);
/* DSDT is pointed to by FADT */
dsdt = tables_blob->len;
build_dsdt(tables_blob, tables->linker, vms);
/* FADT MADT PPTT GTDT MCFG SPCR DBG2 pointed to by RSDT */
acpi_add_table(table_offsets, tables_blob);
build_fadt_rev6(tables_blob, tables->linker, vms, dsdt);
acpi_add_table(table_offsets, tables_blob);
build_madt(tables_blob, tables->linker, vms);
if (!vmc->no_cpu_topology) {
acpi_add_table(table_offsets, tables_blob);
build_pptt(tables_blob, tables->linker, ms,
vms->oem_id, vms->oem_table_id);
}
acpi_add_table(table_offsets, tables_blob);
build_gtdt(tables_blob, tables->linker, vms);
acpi_add_table(table_offsets, tables_blob);
{
AcpiMcfgInfo mcfg = {
.base = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].base,
.size = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].size,
};
build_mcfg(tables_blob, tables->linker, &mcfg, vms->oem_id,
vms->oem_table_id);
}
acpi_add_table(table_offsets, tables_blob);
spcr_setup(tables_blob, tables->linker, vms);
acpi_add_table(table_offsets, tables_blob);
build_dbg2(tables_blob, tables->linker, vms);
if (vms->ras) {
build_ghes_error_table(tables->hardware_errors, tables->linker);
acpi_add_table(table_offsets, tables_blob);
acpi_build_hest(tables_blob, tables->linker, vms->oem_id,
vms->oem_table_id);
}
if (ms->numa_state->num_nodes > 0) {
acpi_add_table(table_offsets, tables_blob);
build_srat(tables_blob, tables->linker, vms);
if (ms->numa_state->have_numa_distance) {
acpi_add_table(table_offsets, tables_blob);
build_slit(tables_blob, tables->linker, ms, vms->oem_id,
vms->oem_table_id);
}
if (ms->numa_state->hmat_enabled) {
acpi_add_table(table_offsets, tables_blob);
build_hmat(tables_blob, tables->linker, ms->numa_state,
vms->oem_id, vms->oem_table_id);
}
}
if (ms->nvdimms_state->is_enabled) {
nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
ms->nvdimms_state, ms->ram_slots, vms->oem_id,
vms->oem_table_id);
}
if (its_class_name() && !vmc->no_its) {
acpi_add_table(table_offsets, tables_blob);
build_iort(tables_blob, tables->linker, vms);
}
#ifdef CONFIG_TPM
if (tpm_get_version(tpm_find()) == TPM_VERSION_2_0) {
acpi_add_table(table_offsets, tables_blob);
build_tpm2(tables_blob, tables->linker, tables->tcpalog, vms->oem_id,
vms->oem_table_id);
}
#endif
if (vms->iommu == VIRT_IOMMU_VIRTIO) {
acpi_add_table(table_offsets, tables_blob);
build_viot(ms, tables_blob, tables->linker, vms->virtio_iommu_bdf,
vms->oem_id, vms->oem_table_id);
}
/* XSDT is pointed to by RSDP */
xsdt = tables_blob->len;
build_xsdt(tables_blob, tables->linker, table_offsets, vms->oem_id,
vms->oem_table_id);
/* RSDP is in FSEG memory, so allocate it separately */
{
AcpiRsdpData rsdp_data = {
.revision = 2,
.oem_id = vms->oem_id,
.xsdt_tbl_offset = &xsdt,
.rsdt_tbl_offset = NULL,
};
build_rsdp(tables->rsdp, tables->linker, &rsdp_data);
}
/*
* The align size is 128, warn if 64k is not enough therefore
* the align size could be resized.
*/
if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) {
warn_report("ACPI table size %u exceeds %d bytes,"
" migration may not work",
tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2);
error_printf("Try removing CPUs, NUMA nodes, memory slots"
" or PCI bridges.\n");
}
acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE);
/* Cleanup memory that's no longer used. */
g_array_free(table_offsets, true);
}
static void acpi_ram_update(MemoryRegion *mr, GArray *data)
{
uint32_t size = acpi_data_len(data);
/* Make sure RAM size is correct - in case it got changed
* e.g. by migration */
memory_region_ram_resize(mr, size, &error_abort);
memcpy(memory_region_get_ram_ptr(mr), data->data, size);
memory_region_set_dirty(mr, 0, size);
}
static void virt_acpi_build_update(void *build_opaque)
{
AcpiBuildState *build_state = build_opaque;
AcpiBuildTables tables;
/* No state to update or already patched? Nothing to do. */
if (!build_state || build_state->patched) {
return;
}
build_state->patched = true;
acpi_build_tables_init(&tables);
virt_acpi_build(VIRT_MACHINE(qdev_get_machine()), &tables);
acpi_ram_update(build_state->table_mr, tables.table_data);
acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob);
acpi_build_tables_cleanup(&tables, true);
}
static void virt_acpi_build_reset(void *build_opaque)
{
AcpiBuildState *build_state = build_opaque;
build_state->patched = false;
}
static const VMStateDescription vmstate_virt_acpi_build = {
.name = "virt_acpi_build",
.version_id = 1,
.minimum_version_id = 1,
.fields = (const VMStateField[]) {
VMSTATE_BOOL(patched, AcpiBuildState),
VMSTATE_END_OF_LIST()
},
};
void virt_acpi_setup(VirtMachineState *vms)
{
AcpiBuildTables tables;
AcpiBuildState *build_state;
AcpiGedState *acpi_ged_state;
if (!vms->fw_cfg) {
trace_virt_acpi_setup();
return;
}
if (!virt_is_acpi_enabled(vms)) {
trace_virt_acpi_setup();
return;
}
build_state = g_malloc0(sizeof *build_state);
acpi_build_tables_init(&tables);
virt_acpi_build(vms, &tables);
/* Now expose it all to Guest */
build_state->table_mr = acpi_add_rom_blob(virt_acpi_build_update,
build_state, tables.table_data,
ACPI_BUILD_TABLE_FILE);
assert(build_state->table_mr != NULL);
build_state->linker_mr = acpi_add_rom_blob(virt_acpi_build_update,
build_state,
tables.linker->cmd_blob,
ACPI_BUILD_LOADER_FILE);
fw_cfg_add_file(vms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data,
acpi_data_len(tables.tcpalog));
if (vms->ras) {
assert(vms->acpi_dev);
acpi_ged_state = ACPI_GED(vms->acpi_dev);
acpi_ghes_add_fw_cfg(&acpi_ged_state->ghes_state,
vms->fw_cfg, tables.hardware_errors);
}
build_state->rsdp_mr = acpi_add_rom_blob(virt_acpi_build_update,
build_state, tables.rsdp,
ACPI_BUILD_RSDP_FILE);
qemu_register_reset(virt_acpi_build_reset, build_state);
virt_acpi_build_reset(build_state);
vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state);
/* Cleanup tables but don't free the memory: we track it
* in build_state.
*/
acpi_build_tables_cleanup(&tables, false);
}
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