hw/arm/bcm2836: Only provide "enabled-cpus" property to multicore SoCs
[qemu.git] / hw / i386 / acpi-microvm.c
1 /* Support for generating ACPI tables and passing them to Guests
2 *
3 * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
4 * Copyright (C) 2006 Fabrice Bellard
5 * Copyright (C) 2013 Red Hat Inc
6 *
7 * Author: Michael S. Tsirkin <mst@redhat.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include "qemu/osdep.h"
24 #include "qemu/cutils.h"
25 #include "qapi/error.h"
26
27 #include "exec/memory.h"
28 #include "hw/acpi/acpi.h"
29 #include "hw/acpi/aml-build.h"
30 #include "hw/acpi/bios-linker-loader.h"
31 #include "hw/acpi/generic_event_device.h"
32 #include "hw/acpi/utils.h"
33 #include "hw/boards.h"
34 #include "hw/i386/fw_cfg.h"
35 #include "hw/i386/microvm.h"
36 #include "hw/pci/pci.h"
37 #include "hw/pci/pcie_host.h"
38 #include "hw/usb/xhci.h"
39 #include "hw/virtio/virtio-mmio.h"
40
41 #include "acpi-common.h"
42 #include "acpi-microvm.h"
43
44 static void acpi_dsdt_add_virtio(Aml *scope,
45 MicrovmMachineState *mms)
46 {
47 gchar *separator;
48 long int index;
49 BusState *bus;
50 BusChild *kid;
51
52 bus = sysbus_get_default();
53 QTAILQ_FOREACH(kid, &bus->children, sibling) {
54 DeviceState *dev = kid->child;
55 Object *obj = object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MMIO);
56
57 if (obj) {
58 VirtIOMMIOProxy *mmio = VIRTIO_MMIO(obj);
59 VirtioBusState *mmio_virtio_bus = &mmio->bus;
60 BusState *mmio_bus = &mmio_virtio_bus->parent_obj;
61
62 if (QTAILQ_EMPTY(&mmio_bus->children)) {
63 continue;
64 }
65 separator = g_strrstr(mmio_bus->name, ".");
66 if (!separator) {
67 continue;
68 }
69 if (qemu_strtol(separator + 1, NULL, 10, &index) != 0) {
70 continue;
71 }
72
73 uint32_t irq = mms->virtio_irq_base + index;
74 hwaddr base = VIRTIO_MMIO_BASE + index * 512;
75 hwaddr size = 512;
76
77 Aml *dev = aml_device("VR%02u", (unsigned)index);
78 aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
79 aml_append(dev, aml_name_decl("_UID", aml_int(index)));
80 aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
81
82 Aml *crs = aml_resource_template();
83 aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
84 aml_append(crs,
85 aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
86 AML_EXCLUSIVE, &irq, 1));
87 aml_append(dev, aml_name_decl("_CRS", crs));
88 aml_append(scope, dev);
89 }
90 }
91 }
92
93 static void acpi_dsdt_add_xhci(Aml *scope, MicrovmMachineState *mms)
94 {
95 if (machine_usb(MACHINE(mms))) {
96 xhci_sysbus_build_aml(scope, MICROVM_XHCI_BASE, MICROVM_XHCI_IRQ);
97 }
98 }
99
100 static void acpi_dsdt_add_pci(Aml *scope, MicrovmMachineState *mms)
101 {
102 if (mms->pcie != ON_OFF_AUTO_ON) {
103 return;
104 }
105
106 acpi_dsdt_add_gpex(scope, &mms->gpex);
107 }
108
109 static void
110 build_dsdt_microvm(GArray *table_data, BIOSLinker *linker,
111 MicrovmMachineState *mms)
112 {
113 X86MachineState *x86ms = X86_MACHINE(mms);
114 Aml *dsdt, *sb_scope, *scope, *pkg;
115 bool ambiguous;
116 Object *isabus;
117
118 isabus = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous);
119 assert(isabus);
120 assert(!ambiguous);
121
122 dsdt = init_aml_allocator();
123
124 /* Reserve space for header */
125 acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
126
127 sb_scope = aml_scope("_SB");
128 fw_cfg_add_acpi_dsdt(sb_scope, x86ms->fw_cfg);
129 isa_build_aml(ISA_BUS(isabus), sb_scope);
130 build_ged_aml(sb_scope, GED_DEVICE, x86ms->acpi_dev,
131 GED_MMIO_IRQ, AML_SYSTEM_MEMORY, GED_MMIO_BASE);
132 acpi_dsdt_add_power_button(sb_scope);
133 acpi_dsdt_add_virtio(sb_scope, mms);
134 acpi_dsdt_add_xhci(sb_scope, mms);
135 acpi_dsdt_add_pci(sb_scope, mms);
136 aml_append(dsdt, sb_scope);
137
138 /* ACPI 5.0: Table 7-209 System State Package */
139 scope = aml_scope("\\");
140 pkg = aml_package(4);
141 aml_append(pkg, aml_int(ACPI_GED_SLP_TYP_S5));
142 aml_append(pkg, aml_int(0)); /* ignored */
143 aml_append(pkg, aml_int(0)); /* reserved */
144 aml_append(pkg, aml_int(0)); /* reserved */
145 aml_append(scope, aml_name_decl("_S5", pkg));
146 aml_append(dsdt, scope);
147
148 /* copy AML table into ACPI tables blob and patch header there */
149 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
150 build_header(linker, table_data,
151 (void *)(table_data->data + table_data->len - dsdt->buf->len),
152 "DSDT", dsdt->buf->len, 2, NULL, NULL);
153 free_aml_allocator();
154 }
155
156 static void acpi_build_microvm(AcpiBuildTables *tables,
157 MicrovmMachineState *mms)
158 {
159 MachineState *machine = MACHINE(mms);
160 X86MachineState *x86ms = X86_MACHINE(mms);
161 GArray *table_offsets;
162 GArray *tables_blob = tables->table_data;
163 unsigned dsdt, xsdt;
164 AcpiFadtData pmfadt = {
165 /* ACPI 5.0: 4.1 Hardware-Reduced ACPI */
166 .rev = 5,
167 .flags = ((1 << ACPI_FADT_F_HW_REDUCED_ACPI) |
168 (1 << ACPI_FADT_F_RESET_REG_SUP)),
169
170 /* ACPI 5.0: 4.8.3.7 Sleep Control and Status Registers */
171 .sleep_ctl = {
172 .space_id = AML_AS_SYSTEM_MEMORY,
173 .bit_width = 8,
174 .address = GED_MMIO_BASE_REGS + ACPI_GED_REG_SLEEP_CTL,
175 },
176 .sleep_sts = {
177 .space_id = AML_AS_SYSTEM_MEMORY,
178 .bit_width = 8,
179 .address = GED_MMIO_BASE_REGS + ACPI_GED_REG_SLEEP_STS,
180 },
181
182 /* ACPI 5.0: 4.8.3.6 Reset Register */
183 .reset_reg = {
184 .space_id = AML_AS_SYSTEM_MEMORY,
185 .bit_width = 8,
186 .address = GED_MMIO_BASE_REGS + ACPI_GED_REG_RESET,
187 },
188 .reset_val = ACPI_GED_RESET_VALUE,
189 };
190
191 table_offsets = g_array_new(false, true /* clear */,
192 sizeof(uint32_t));
193 bios_linker_loader_alloc(tables->linker,
194 ACPI_BUILD_TABLE_FILE, tables_blob,
195 64 /* Ensure FACS is aligned */,
196 false /* high memory */);
197
198 dsdt = tables_blob->len;
199 build_dsdt_microvm(tables_blob, tables->linker, mms);
200
201 pmfadt.dsdt_tbl_offset = &dsdt;
202 pmfadt.xdsdt_tbl_offset = &dsdt;
203 acpi_add_table(table_offsets, tables_blob);
204 build_fadt(tables_blob, tables->linker, &pmfadt, NULL, NULL);
205
206 acpi_add_table(table_offsets, tables_blob);
207 acpi_build_madt(tables_blob, tables->linker, X86_MACHINE(machine),
208 ACPI_DEVICE_IF(x86ms->acpi_dev));
209
210 xsdt = tables_blob->len;
211 build_xsdt(tables_blob, tables->linker, table_offsets, NULL, NULL);
212
213 /* RSDP is in FSEG memory, so allocate it separately */
214 {
215 AcpiRsdpData rsdp_data = {
216 /* ACPI 2.0: 5.2.4.3 RSDP Structure */
217 .revision = 2, /* xsdt needs v2 */
218 .oem_id = ACPI_BUILD_APPNAME6,
219 .xsdt_tbl_offset = &xsdt,
220 .rsdt_tbl_offset = NULL,
221 };
222 build_rsdp(tables->rsdp, tables->linker, &rsdp_data);
223 }
224
225 /* Cleanup memory that's no longer used. */
226 g_array_free(table_offsets, true);
227 }
228
229 static void acpi_build_no_update(void *build_opaque)
230 {
231 /* nothing, microvm tables don't change at runtime */
232 }
233
234 void acpi_setup_microvm(MicrovmMachineState *mms)
235 {
236 X86MachineState *x86ms = X86_MACHINE(mms);
237 AcpiBuildTables tables;
238
239 assert(x86ms->fw_cfg);
240
241 if (!x86_machine_is_acpi_enabled(x86ms)) {
242 return;
243 }
244
245 acpi_build_tables_init(&tables);
246 acpi_build_microvm(&tables, mms);
247
248 /* Now expose it all to Guest */
249 acpi_add_rom_blob(acpi_build_no_update, NULL,
250 tables.table_data,
251 ACPI_BUILD_TABLE_FILE,
252 ACPI_BUILD_TABLE_MAX_SIZE);
253 acpi_add_rom_blob(acpi_build_no_update, NULL,
254 tables.linker->cmd_blob,
255 "etc/table-loader", 0);
256 acpi_add_rom_blob(acpi_build_no_update, NULL,
257 tables.rsdp,
258 ACPI_BUILD_RSDP_FILE, 0);
259
260 acpi_build_tables_cleanup(&tables, false);
261 }